Commit Graph

608 Commits

Author SHA1 Message Date
Len Brown
5f3aea5777 tools/power turbostat: bugfix: --add u32 was printed as u64
When the "u32" keyword is used with --add, it means that
the output should be truncated to 32-bits.  This was not
happening and all 64-bits were printed.

Also, when no column name was used for an added MSR,
The default column name was in deximal, eg. MSR16.
Users report that they tend to use hex MSR numbers,
so print them in hex.  To always fit into the columns,
use the syntax M0x10.  Note that the user can always
supply any column header that they want.

eg --add msr0x10,MY_TSC

Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:26 -05:00
Len Brown
0815a3d09b tools/power turbostat: show error on exec
When turbostat is run in one-shot command mode,
the parent takes the 'before' counter snapshot,
fork/exec/wait for the child to exit,
takes the 'after' counter snapshot,
and prints the results.

however, if the child fails to exec the command,
it immediately returns, without indicating that
anythign was wrong.

Add an error message showing that exec failed:

sudo turbostat sleeeep 4
...
turbostat: exec sleeeep: No such file or directory
...

Note that the parent will still print out the statistics,
because it can't tell the difference between the failed
exec and a command that is purposefully returning
the same status.  Unfortunately, this may obscure the
error message.  However, if the --out parameter is used,
the error message is evident on stderr.

Reported-by: Wendy Wang <wendy.wang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:25 -05:00
Len Brown
7293fccdff tools/power turbostat: dump p-state software config
cpu1: cpufreq driver: acpi-cpufreq
cpu1: cpufreq governor: ondemand
cpufreq boost: 1

or

cpu0: cpufreq driver: intel_pstate
cpu0: cpufreq governor: powersave
cpufreq intel_pstate no_turbo: 0

Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:25 -05:00
Len Brown
7da6e3e212 tools/power turbostat: show package number, even without --debug
On multi-package systems, the "Package" column was being displayed
only if --debug was used.  Show it always.

Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:25 -05:00
Len Brown
dd778a5e6b tools/power turbostat: support "--hide C1" etc.
Originally, the only way to hide the sysfs C-state statistics columns
was with "--hide sysfs".  This was because we process "--hide" before
we probe for those columns.

hack --hide to remember deferred hide requests, and apply
them when sysfs is probed.

"--hide sysfs" is still available as short-hand to refer to
the entire group of counters.

The down-side of this change is that we no longer error check for
bogus --hide column names.  But the user will quickly figure that
out if a column they mean to hide is still there...

Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:24 -05:00
Len Brown
4e4e1e7c6e tools/power turbostat: move --Package and --processor into the --cpu option
--Package is now "--cpu package",
which will display just the 1st CPU in each package

--processor is not "--cpu core"
which will display just the 1st CPU in each core

Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:24 -05:00
Len Brown
da67e2b9fd tools/power turbostat: turbostat.8 update
update examples to show recently updated features.
In particular
--add
--show
--hide
--cpu
--list

Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:23 -05:00
Len Brown
6168c2e0fb tools/power turbostat: update --list feature
Make it possible to take the entire un-edited output
from `turbostat --list` and feed it to "turbostat --show"
or "turbostat --hide".

To do this, the leading comma was removed
(no mater what columns are active)
and also they dynamic C-state "C1, C2, C3" etc are replaced
by the string "sysfs", which refers to them as a group.

Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:23 -05:00
Len Brown
0de6c0df4e tools/power turbostat: use wide columns to display large numbers
When a counter overlfows 7 columns, it shifts the remaining
columns to the right, so they no longer line up under
their column header.

Update turbostat to dectect when it is handling large
numbers, and switch to wider columns where, necessary.

Reported-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:23 -05:00
Len Brown
c8ade3616a tools/power turbostat: Add --list option to show available header names
It is handy to know the list of column header names,
so that they can be used with --add and --skip

The new --list option shows them:

sudo ./turbostat --list --hide sysfs
,Core,CPU,Avg_MHz,Busy%,Bzy_MHz,TSC_MHz,IRQ,SMI,CPU%c1,CPU%c3,CPU%c6,CPU%c7,CoreTmp,PkgTmp,GFX%rc6,GFXMHz,PkgWatt,CorWatt,GFXWatt

Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:22 -05:00
Len Brown
218f0e8d5c tools/power turbostat: fix zero IRQ count shown in one-shot command mode
The IRQ column has been working for periodic mode,
but not in one-shot command mode, it shows only 0.

until now.

Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:22 -05:00
Len Brown
1ef7d21afe tools/power turbostat: add --cpu parameter
With the --cpu parameter, turbostat prints only lines
for the specified set of CPUs:

sudo ./turbostat --quiet --show Core,CPU --cpu 0,1,3..5,6-7
	Core	CPU
	-	-
	0	0
	0	4
	1	1
	1	5
	2	6
	3	3
	3	7

Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:22 -05:00
Len Brown
41618e63f2 tools/power turbostat: print sysfs C-state stats
When turbostat shows % of time in a CPU idle power state,
it has always been showing information from underlying
hardware residency counters.

While this reflects what the hardware is doing, and is thus
useful for understanding the hardware,
it doesn't directly tell us what Linux requested --
which is useful for tuning Linux itself.

Here we add columns to turbostat to show the
Linux cpuidle sub-system statistics:
/sys/devices/system/cpu/cpu*/cpuidle/state*/*

The first group of columns are the "usage", which is the
number of times software requested that C-state in the
measurement interval. eg C1 below.

The second group of columns are the "time", which is the percentage
of the measurement interval time that software has requested
the specified C-state. eg C1% below.

These software counters can be compared to the underlying
hardware residency counters (eg CPU%c1	CPU%c3	CPU%c6	CPU%c7)
to compare what sofware requested to what the hardware delivered.

These sysfs attributes are discovered when turbostat starts,
rather than being "built in".  So the --show and --hide
parameters do not know about these dynamic column names.
However "--show sysfs" and "--hide sysfs" act on the
entire group of columns:

turbostat --show sysfs
...
cpu4: POLL: CPUIDLE CORE POLL IDLE
cpu4: C1: MWAIT 0x00
cpu4: C1E: MWAIT 0x01
cpu4: C3: MWAIT 0x10
cpu4: C6: MWAIT 0x20
cpu4: C7s: MWAIT 0x32
...
C1 	C1E	C3 	C6 	C7s	C1% 	C1E%	C3%	C6% 	C7s%
3	6	5	1	188	0.00	0.02	0.00	0.00	99.93
0	6	5	0	58	0.00	0.16	0.02	0.00	99.70
0	0	0	0	9	0.00	0.00	0.00	0.00	99.96
0	0	0	1	24	0.00	0.00	0.00	0.02	99.93
0	0	0	0	9	0.00	0.00	0.00	0.00	99.97
0	0	0	0	32	0.00	0.00	0.00	0.00	99.96
0	0	0	0	7	0.00	0.00	0.00	0.00	99.98
2	0	0	0	36	0.00	0.00	0.00	0.00	99.97
1	0	0	0	13	0.00	0.00	0.00	0.00	99.98

Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:21 -05:00
Len Brown
495c7654cc tools/power turbostat: extend --add option to accept /sys path
Previously, the --add option could specify only an MSR.

Here is is extended so an arbitrary /sys attribute,
as specified by an absolute file path name.

sudo ./turbostat --add /sys/devices/system/cpu/cpu0/cpuidle/state5/usage

Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:21 -05:00
Len Brown
ade0ebacdf tools/power turbostat: skip unused counters on BDX
Skip these two counters on BDX, as they are always zero:
cc7, pc7

Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:21 -05:00
Len Brown
31e07522be tools/power turbostat: fix decoding for GLM, DNV, SKX turbo-ratio limits
Newer processors do not hard-code the the number of cpus in each bin
to {1, 2, 3, 4, 5, 6, 7, 8}  Rather, they can specify any number
of CPUS in each of the 8 bins:

eg.

...
37 * 100.0 = 3600.0 MHz max turbo 4 active cores
38 * 100.0 = 3700.0 MHz max turbo 3 active cores
39 * 100.0 = 3800.0 MHz max turbo 2 active cores
39 * 100.0 = 3900.0 MHz max turbo 1 active cores

could now look something like this:

...
37 * 100.0 = 3600.0 MHz max turbo 16 active cores
38 * 100.0 = 3700.0 MHz max turbo 8 active cores
39 * 100.0 = 3800.0 MHz max turbo 4 active cores
39 * 100.0 = 3900.0 MHz max turbo 2 active cores

Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:20 -05:00
Len Brown
34c7619762 tools/power turbostat: skip unused counters on SKX
Skip these four counters on SKX, as they are always zero:
cc3, pc3
cc7, pc7

Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:20 -05:00
Len Brown
7170a37437 tools/power turbostat: Denverton: use HW CC1 counter, skip C3, C7
The CC1 column in tubostat can be computed by subtracting
the core c-state residency countes from the total Cx residency.

CC1 = (Idle_time_as_measured by MPERF) - (all core C-states with
residency counters)

However, as the underlying counter reads are not atomic,
error can be noticed in this calculations, especially
when the numbers are small.

Denverton has a hardware CC1 residency counter
to improve the accuracy of the cc1 statistic -- use it.

At the same time, Denverton has no concept of CC3, PC3, CC7, PC7,
so skip collecting and printing those columns.

Finally, a note of clarification.
Turbostat prints the standard PC2 residency counter,
but on Denverton hardware, that actually means PC1E.
Turbostat prints the standard PC6 residency counter,
but on Denverton hardware, that actually means PC2.

At this point, we document that differnce in this commit message,
rather than adding a quirk to the software.

Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:20 -05:00
Len Brown
ac01ac1371 tools/power turbostat: initial Gemini Lake SOC support
Gemini Lake is similar to Apollo Lake (Broxton/Goldmont)

Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:19 -05:00
Len Brown
0f47c08d8c tools/power turbostat: bug fixes to --add, --show/--hide features
Fix a bug with --add, where the title of the column
is un-initialized if not specified by the user.

The initial implementation of --show and --hide
neglected to handle the pc8/pc9/pc10 counters.

Fix a bug where "--show Core" only worked with --debug

Reported-by: Wendy Wang <wendy.wang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:13 -05:00
Len Brown
008d396eb2 tools/power turbostat: use tsc_tweak everwhere it is needed
The CPU ticks at a rate in the "bus clock" domain.
eg. 100 MHz * bus_ratio.

On newer processors, the TSC has been moved out of this BCLK
domain and into a separate crystal-clock domain.

While the TSC ticks "close to" the base frequency, those that look
closely at the numbers will notice small errors in calculations that
mix units of TSC clocks and bus clocks.

"tsc_tweak" was introduced to address the most visible
mixing -- the %Busy and the the Busy_MHz calculations.
(A simplification as since removed TSC from the BusyMHz calculation)

Here we apply the tsc_tweak to everyplace where BCLK
and TSC units are mixed.  The results is that
on a system which is 100% idle, the sum of the C-states
are now much more likely to be closer to 100%.

Reported-by: Travis Downs <travis.downs@gmail.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:13 -05:00
Len Brown
96e4715857 tools/power turbostat: print system config, unless --quiet
Some users want turbostat to tell them everything, by default.
Some users want turbostat to be quiet, by default.

I find that I'm in the 1st camp, and so I've never liked
needing to type the --debug parameter to decode the system
configuration.

So here we change the default and print the system configuration,
by default.  (The --debug option is now un-documented, though
it does still exist for debugging turbostat internals)

When you do not want to see the system configuration
header, use the new "--quiet" option.

Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:12 -05:00
Len Brown
fee86541d2 tools/power turbostat: show all columns, independent of --debug
Some time ago, turbostat overflowed 80 columns.

So on the assumption that a "casual" user would always
want topology and frequency columns, we hid the rest
of the columns and the system configuration decoding
behind the --debug option.

Not everybody liked that change -- including me.
I use --debug 99% of the time...

Well, now we have "-o file" to put turbostat output into a file,
so unless you are watching real-time in a small window,
column count is less frequently a factor.

And more recently, we got the "--hide columnA,columnB" option
to specify columns to skip.

So now we "un-hide" the rest of the columns from behind --debug,
and show them all, by default.

Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:12 -05:00
Len Brown
33148d671c tools/power turbostat: decode MSR_MISC_FEATURE_CONTROL
useful for observing if the BIOS disabled prefetch
Not architectural, but docuemented as present on NHM, SNB
and is present on others.

Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:11 -05:00
Len Brown
b3a34e9382 tools/power turbostat: decode CPUID(6).TURBO
show the CPUID feature for turbo to clarify the case
when it may not be shown in MISC_ENABLE

CPUID(6): APERF, TURBO, DTS, PTM, No-HWP, No-HWPnotify, No-HWPwindow, No-HWPepp, No-HWPpkg, EPB
cpu4: MSR_IA32_MISC_ENABLE: 0x00850089 (TCC EIST MWAIT TURBO)

Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:04 -05:00
Len Brown
0f7887c49b tools/power turbostat: dump Atom P-states correctly
Turbostat dumps MSR_TURBO_RATIO_LIMIT on Core Architecture.
But Atom Architecture uses MSR_ATOM_CORE_RATIOS and
MSR_ATOM_CORE_TURBO_RATIOS.

Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:04 -05:00
Len Brown
e651262477 tools/power turbostat: further decode MSR_IA32_MISC_ENABLE
Decode MISC_ENABLE.NO_TURBO,
also use the #defines in msr-index.h for decoding this register

cpu0: MSR_IA32_MISC_ENABLE: 0x00850089 (TCC EIST MWAIT TURBO)

Although it is not architectural, decode also
MSR_IA32_MISC_ENABLE.prefetch-disable (bit-9).
documented to be present on: Core, P4, Intel-Xeon
reserved on: Atom, Silvermont, Nehalem, SNB, PHI ec.

Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:03 -05:00
Len Brown
710f273ba9 tools/power turbostat: add precision to --debug frequency output
Add a digit of precision to the --debug output for frequency range.
This is useful when BCLK is not an integer.

old:
6 * 83 = 500 MHz max efficiency frequency
26 * 83 = 2166 MHz base frequency

new:
6 * 83.3 = 499.8 MHz max efficiency frequency
26 * 83.3 = 2165.8 MHz base frequency

Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:02 -05:00
Len Brown
0539ba118f tools/power turbostat: Baytrail c-state support
The Baytrail SOC, with its Silvermont core, has some unique properties:

1. a hardware CC1 residency counter
2. a module-c6 residency counter
3. a package-c6 counter at traditional package-c7 counter address.

The SOC does not support c3, pc3, c7 or pc7 counters.

Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:14:02 -05:00
Len Brown
1df2e55abc tools/power turbostat: use new name for MSR_PKG_CST_CONFIG_CONTROL
Previously called MSR_NHM_SNB_PKG_CST_CFG_CTL

Signed-off-by: Len Brown <len.brown@intel.com>
2017-03-01 00:13:17 -05:00
Linus Torvalds
c4f3f22edd linux-kselftest-4.11-rc1
This update consists of:
 
 -- fixes to several existing tests from Stafford Horne
 -- cpufreq tests from Viresh Kumar
 -- Selftest build and install fixes from Bamvor Jian Zhang
    and Michael Ellerman
 -- Fixes to protection-keys tests from Dave Hansen
 -- Warning fixes from Shuah Khan
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Merge tag 'linux-kselftest-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull Kselftest update from Shuah Khan:
 "This update consists of:

   - fixes to several existing tests from Stafford Horne

   - cpufreq tests from Viresh Kumar

   - Selftest build and install fixes from Bamvor Jian Zhang and Michael
     Ellerman

   - Fixes to protection-keys tests from Dave Hansen

   - Warning fixes from Shuah Khan"

* tag 'linux-kselftest-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (28 commits)
  selftests/powerpc: Fix remaining fallout from recent changes
  selftests/powerpc: Fix the clean rule since recent changes
  selftests: Fix the .S and .S -> .o rules
  selftests: Fix the .c linking rule
  selftests: Fix selftests build to just build, not run tests
  selftests, x86, protection_keys: fix wrong offset in siginfo
  selftests, x86, protection_keys: fix uninitialized variable warning
  selftest: cpufreq: Update MAINTAINERS file
  selftest: cpufreq: Add special tests
  selftest: cpufreq: Add support to test cpufreq modules
  selftest: cpufreq: Add suspend/resume/hibernate support
  selftest: cpufreq: Add support for cpufreq tests
  selftests: Add intel_pstate to TARGETS
  selftests/intel_pstate: Update makefile to match new style
  selftests/intel_pstate: Fix warning on loop index overflow
  cpupower: Restore format of frequency-info limit
  selftests/futex: Add headers to makefile dependencies
  selftests/futex: Add stdio used for logging
  selftests: x86 protection_keys remove dead code
  selftests: x86 protection_keys fix unused variable compile warnings
  ...
2017-02-25 15:32:53 -08:00
Len Brown
f264288847 tools/power turbostat: update MSR_PKG_CST_CONFIG_CONTROL decoding
AMT value 0 is unlimited, not PC0

Signed-off-by: Len Brown <len.brown@intel.com>
2017-02-25 16:52:32 -05:00
Len Brown
8f6196c192 tools/power turbostat: Baytrail: remove debug line in quiet mode
Without --debug, a debug line was printed on Baytrail:

SLM BCLK: 83.3 Mhz

Signed-off-by: Len Brown <len.brown@intel.com>
2017-02-25 16:52:31 -05:00
Len Brown
71616c8e93 tools/power turbostat: decode Baytrail CC6 and MC6 demotion configuration
with --debug, see:

cpu0: MSR_CC6_DEMOTION_POLICY_CONFIG: 0x00000000 (DISable-CC6-Demotion)
cpu0: MSR_MC6_DEMOTION_POLICY_CONFIG: 0x00000000 (DISable-MC6-Demotion)

Note that the hardware default is to enable demotion,
and Linux started clearing these registers in 3.17.

Signed-off-by: Len Brown <len.brown@intel.com>
2017-02-25 16:52:30 -05:00
Len Brown
cf4cbe5314 tools/power turbostat: BYT does not have MSR_MISC_PWR_MGMT
and so --debug fails with:

turbostat: msr 1 offset 0x1aa read failed: Input/output error

It seems that baytrail, and airmont do not have this MSR.
It is included in subsequent Goldmont Atom.

Signed-off-by: Len Brown <len.brown@intel.com>
2017-02-25 16:52:29 -05:00
Len Brown
812db3f77b tools/power turbostat: Add --show and --hide parameters
Add the "--show" and "--hide" cmdline parameters.

By default, turbostat shows all columns.

turbostat --hide counter_list
will continue showing all columns, except for those listed.

turbostat --show counter_list
will show _only_ the listed columns

These features work for built-in counters, and have no effect
on columns added with the --add parameter.

Signed-off-by: Len Brown <len.brown@intel.com>
2017-02-25 16:52:28 -05:00
Len Brown
678a3bd1b3 tools/power turbostat: fix bugs in --add option
When --add was used more than once, overflowed buffers
caused some counters to be stored on top of others,
corrupting the results.  Simplify the code by simply
reserving space for up to 16 added counters per each
cpu, core, package.

Per-cpu added counters were being printed only per-core.

Signed-off-by: Len Brown <len.brown@intel.com>
2017-02-25 16:52:28 -05:00
Linus Torvalds
43e31e4047 ACPI updates for v4.11-rc1
- Update of the ACPICA code in the kernel to upstream revision
    20170119 including:
    * Fixes related to the handling of the bit width and bit offset
      fields in Generic Address Structure (Lv Zheng).
    * ACPI resources handling fix related to invalid resource
      descriptors (Bob Moore).
    * Fix to enable implicit result conversion for several ASL
      library functions (Bob Moore).
    * Support for method invocations as target operands in AML
      (Bob Moore).
    * Fix to use a correct operand type for DeRefOf() in some
      situations (Bob Moore).
    * Utilities updates (Bob Moore, Lv Zheng).
    * Disassembler/debugger updates (David Box, Lv Zheng).
    * Build fixes (Colin Ian King, Lv Zheng).
    * Update of copyright notices in all files (Bob Moore).
 
  - Fix for modalias handling for SPI and I2C devices with
    DT-compatible identification strings (Dan O'Donovan).
 
  - Fixes for the ACPI EC and button drivers (Lv Zheng).
 
  - ACPI processor handling fix related to CPU hotplug (online/offline)
    on x86 (Vitaly Kuznetsov).
 
  - Suspend quirk to save/restore NVS memory over S3 transitions for
    Lenovo G50-45 (Zhang Rui).
 
  - Message formatting fix for the ACPI APEI code (Colin Ian King).
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Merge tag 'acpi-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI updates from Rafael Wysocki:
 "These update the ACPICA code in the kernel to upstream revision
  20170119, which among other things updates copyright notices in all of
  the ACPICA files, fix a couple of issues in the ACPI EC and button
  drivers, fix modalias handling for non-discoverable devices with
  DT-compatible identification strings, add a suspend quirk for one
  platform and fix a message in the APEI code.

  Specifics:

   - Update of the ACPICA code in the kernel to upstream revision
     20170119 including:

      + Fixes related to the handling of the bit width and bit offset
        fields in Generic Address Structure (Lv Zheng)
      + ACPI resources handling fix related to invalid resource
        descriptors (Bob Moore)
      + Fix to enable implicit result conversion for several ASL library
        functions (Bob Moore)
      + Support for method invocations as target operands in AML (Bob
        Moore)
      + Fix to use a correct operand type for DeRefOf() in some
        situations (Bob Moore)
      + Utilities updates (Bob Moore, Lv Zheng)
      + Disassembler/debugger updates (David Box, Lv Zheng)
      + Build fixes (Colin Ian King, Lv Zheng)
      + Update of copyright notices in all files (Bob Moore)

   - Fix for modalias handling for SPI and I2C devices with
     DT-compatible identification strings (Dan O'Donovan)

   - Fixes for the ACPI EC and button drivers (Lv Zheng)

   - ACPI processor handling fix related to CPU hotplug (online/offline)
     on x86 (Vitaly Kuznetsov)

   - Suspend quirk to save/restore NVS memory over S3 transitions for
     Lenovo G50-45 (Zhang Rui)

   - Message formatting fix for the ACPI APEI code (Colin Ian King)"

* tag 'acpi-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (32 commits)
  ACPICA: Update version to 20170119
  ACPICA: Tools: Update common signon, remove compilation bit width
  ACPICA: Source tree: Update copyright notices to 2017
  ACPICA: Linuxize: Restore and fix Intel compiler build
  x86/ACPI: keep x86_cpu_to_acpiid mapping valid on CPU hotplug
  spi: acpi: Initialize modalias from of_compatible
  i2c: acpi: Initialize info.type from of_compatible
  ACPI / bus: Introduce acpi_of_modalias() equiv of of_modalias_node()
  ACPI: save NVS memory for Lenovo G50-45
  ACPI, APEI, EINJ: fix malformed newline escape
  ACPI / button: Remove lid_init_state=method mode
  ACPI / button: Change default behavior to lid_init_state=open
  ACPI / EC: Use busy polling mode when GPE is not enabled
  ACPI / EC: Remove old CLEAR_ON_RESUME quirk
  ACPICA: Update version to 20161222
  ACPICA: Parser: Update parse info table for some operators
  ACPICA: Fix a problem with recent extra support for control method invocations
  ACPICA: Parser: Allow method invocations as target operands
  ACPICA: Fix for implicit result conversion for the ToXXX functions
  ACPICA: Resources: Not a valid resource if buffer length too long
  ..
2017-02-20 17:55:15 -08:00
Doug Smythies
48385dd740 tools/power/x86: Debug utility for intel_pstate driver
This utility can be used to debug and tune the performance of the
intel_pstate driver.

This utility can be used in two ways:

 - If there is Linux trace file with pstate_sample events enabled, then
   this utility can parse the trace file and generate performance plots.

 - If user has not specified a trace file as input via command line
   parameters, then this utility enables and collects trace data for a
   user-specified interval and generates performance plots.

Signed-off-by: Doug Smythies <dsmythies@telus.net>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-02-16 00:54:57 +01:00
Bob Moore
7735ca0eb4 ACPICA: Source tree: Update copyright notices to 2017
ACPICA commit 16577e5265923f4999b4d2c0addb2343b18135e1

Affects all files.

Link: https://github.com/acpica/acpica/commit/16577e52
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-02-09 14:47:02 +01:00
Stafford Horne
4da39ceb26 cpupower: Restore format of frequency-info limit
The intel_pstate kselftest expects that the output of
`cpupower frequency-info -l | tail -1 | awk ' { print $1 } '`
to get frequency limits.  This does not work after the following two
changes.

 - 562e5f1a3: rework the "cpupower frequency-info" command
   (Jacob Tanenbaum) removed parsable limit output
 - ce512b840: Do not analyse offlined cpus
   (Thomas Renninger) added newline to break limit parsing more

This change preserves human readable output if wanted as well as
parsable output for scripts/tests.

Cc: Thomas Renninger <trenn@suse.com>
Cc: "Shreyas B. Prabhu" <shreyas@linux.vnet.ibm.com>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Cc: linux-pm@vger.kernel.org
Signed-off-by: Stafford Horne <shorne@gmail.com>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2017-01-19 10:30:28 -07:00
Lv Zheng
0fc5e8f4e4 ACPICA: Hardware: Add sleep register hooks
ACPICA commit ba665dc8e20d9f7730466a659564dd6c557a6cbc

In Linux, para-virtualization implmentation hooks critical register
writes to prevent real hardware operations. This increases divergences
when the sleep registers are cracked in Linux resident ACPICA.

This patch tries to introduce a single OSL to reduce the divergences.

Link: https://github.com/acpica/acpica/commit/ba665dc8
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2017-01-02 23:18:41 +01:00
Linus Torvalds
10bbe7599e Merge branch 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
Pull turbostat updates from Len Brown.

* 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
  tools/power turbostat: remove obsolete -M, -m, -C, -c options
  tools/power turbostat: Make extensible via the --add parameter
  tools/power turbostat: Denverton uses a 25 MHz crystal, not 19.2 MHz
  tools/power turbostat: line up headers when -M is used
  tools/power turbostat: fix SKX PKG_CSTATE_LIMIT decoding
  tools/power turbostat: Support Knights Mill (KNM)
  tools/power turbostat: Display HWP OOB status
  tools/power turbostat: fix Denverton BCLK
  tools/power turbostat: use intel-family.h model strings
  tools/power/turbostat: Add Denverton RAPL support
  tools/power/turbostat: Add Denverton support
  tools/power/turbostat: split core MSR support into status + limit
  tools/power turbostat: fix error case overflow read of slm_freq_table[]
  tools/power turbostat: Allocate correct amount of fd and irq entries
  tools/power turbostat: switch to tab delimited output
  tools/power turbostat: Gracefully handle ACPI S3
  tools/power turbostat: tidy up output on Joule counter overflow
2016-12-25 14:01:28 -08:00
Len Brown
6886fee4d7 tools/power turbostat: remove obsolete -M, -m, -C, -c options
The new --add option has replaced the -M, -m, -C, -c options
Eg.

-M 0x10 is now --add msr0x10,raw
-m 0x10 is now --add msr0x10,raw,u32
-C 0x10 is now --add msr0x10,delta
-c 0x10 is now --add msr0x10,delta,u32

The --add option can be repeated to add any number of counters,
while the previous options were limited to adding one of each type.

In addition, the --add option can accept a column label,
and can also display a counter as a percentage of elapsed cycles.

Eg. --add msr0x3fe,core,percent,MY_CC3

Signed-off-by: Len Brown <len.brown@intel.com>
2016-12-24 15:38:09 -05:00
Len Brown
388e9c8134 tools/power turbostat: Make extensible via the --add parameter
Create the "--add" parameter.  This can be used to teach an existing
turbostat binary about any number of any type of counter.

turbostat(8) details the syntax for --add.

Signed-off-by: Len Brown <len.brown@intel.com>
2016-12-24 15:16:10 -05:00
Linus Torvalds
41e0e24b45 Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
Pull kbuild updates from Michal Marek:

 - prototypes for x86 asm-exported symbols (Adam Borowski) and a warning
   about missing CRCs (Nick Piggin)

 - asm-exports fix for LTO (Nicolas Pitre)

 - thin archives improvements (Nick Piggin)

 - linker script fix for CONFIG_LD_DEAD_CODE_DATA_ELIMINATION (Nick
   Piggin)

 - genksyms support for __builtin_va_list keyword

 - misc minor fixes

* 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  x86/kbuild: enable modversions for symbols exported from asm
  kbuild: fix scripts/adjust_autoksyms.sh* for the no modules case
  scripts/kallsyms: remove last remnants of --page-offset option
  make use of make variable CURDIR instead of calling pwd
  kbuild: cmd_export_list: tighten the sed script
  kbuild: minor improvement for thin archives build
  kbuild: modpost warn if export version crc is missing
  kbuild: keep data tables through dead code elimination
  kbuild: improve linker compatibility with lib-ksyms.o build
  genksyms: Regenerate parser
  kbuild/genksyms: handle va_list type
  kbuild: thin archives for multi-y targets
  kbuild: kallsyms allow 3-pass generation if symbols size has changed
2016-12-17 16:24:13 -08:00
Linus Torvalds
a9042defa2 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
Pull trivial updates from Jiri Kosina.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial:
  NTB: correct ntb_spad_count comment typo
  misc: ibmasm: fix typo in error message
  Remove references to dead make variable LINUX_INCLUDE
  Remove last traces of ikconfig.h
  treewide: Fix printk() message errors
  Documentation/device-mapper: s/getsize/getsz/
2016-12-14 11:12:25 -08:00
Masanari Iida
9165dabb25 treewide: Fix printk() message errors
This patch fix spelling typos in printk and kconfig.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-12-14 10:54:27 +01:00
Rafael J. Wysocki
496c9a9293 Merge branch 'acpica'
* acpica:
  ACPICA: Utilities: Add new decode function for parser values
  ACPICA: Tables: Add an error message complaining driver bugs
  ACPICA: Tables: Add acpi_tb_unload_table()
  ACPICA: Tables: Cleanup acpi_tb_install_and_load_table()
  ACPICA: Events: Fix acpi_ev_initialize_region() return value
  ACPICA: Back port of "ACPICA: Dispatcher: Tune interpreter lock around AcpiEvInitializeRegion()"
  ACPICA: Namespace: Add acpi_ns_handle_to_name()
  ACPICA: Update version to 20160930
  ACPICA: Move acpi_gbl_max_loop_iterations to the public globals file
  ACPICA: Disassembler: Fix for Divide() support, new support for test suite
  ACPICA: Increase loop limit for AE_AML_INFINITE_LOOP exception
  ACPICA: MacOSX: Fix wrong sem_destroy definition
  ACPICA: MacOSX: Fix anonymous semaphore implementation
  ACPICA: Update an info message during table load phase
2016-12-12 20:47:18 +01:00
Uwe Kleine-König
e19b7cee02 make use of make variable CURDIR instead of calling pwd
make already provides the current working directory in a variable, so make
use of it instead of forking a shell. Also replace usage of PWD by
CURDIR. PWD is provided by most shells, but not all, so this makes the
build system more robust.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Michal Marek <mmarek@suse.com>
2016-12-11 12:12:56 +01:00
Len Brown
7268d407ad tools/power turbostat: Denverton uses a 25 MHz crystal, not 19.2 MHz
This changes only the TSC frequency decoding line seen with --debug

old: TSC: 1382 MHz (19200000 Hz * 216 / 3 / 1000000)
new: TSC: 1800 MHz (25000000 Hz * 216 / 3 / 1000000)

Signed-off-by: Len Brown <len.brown@intel.com>
2016-12-01 23:18:26 -05:00
Len Brown
5cc6323c79 tools/power turbostat: line up headers when -M is used
The -M option adds an 18-column item, and the header
needs to be wide enough to keep the header aligned
with the columns.

Signed-off-by: Len Brown <len.brown@intel.com>
2016-12-01 21:14:38 -05:00
Len Brown
d8ebb44226 tools/power turbostat: fix SKX PKG_CSTATE_LIMIT decoding
SKX has fewer package C-states than previous generations,
and so the decoding of PKG_CSTATE_LIMIT has changed.

This changes the line ending with pkg-cstate-limit=XXX: pcYYY

Signed-off-by: Len Brown <len.brown@intel.com>
2016-12-01 20:27:46 -05:00
Rafael J. Wysocki
d0ab6714c5 Merge back earlier ACPICA material for v4.10. 2016-12-01 14:24:54 +01:00
Len Brown
005c82d64d tools/power turbostat: Support Knights Mill (KNM)
Original-author: Piotr Luc <piotr.luc@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2016-12-01 01:35:38 -05:00
Srinivas Pandruvada
ddadb8adea tools/power turbostat: Display HWP OOB status
Display if the HWP is enabled in OOB (Out of band) mode.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2016-12-01 01:33:20 -05:00
Xiaolong Wang
5bbac26eae tools/power turbostat: fix Denverton BCLK
Add Denverton to the group of SandyBridge and later processors,
to let the bclk be recognized as 100MHz rather than 133MHz,
then avoid the wrong value of the frequencies based on it,
including Bzy_MHz, max efficiency freuency, base frequency,
and turbo mode frequencies.

Signed-off-by: Xiaolong Wang <xiaolong.wang@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2016-12-01 01:33:19 -05:00
Len Brown
869ce69e1e tools/power turbostat: use intel-family.h model strings
All except for model 1F, a Nehalem, which is currently incorrectly
indentified as a Westmere in that new header.

Signed-off-by: Len Brown <len.brown@intel.com>
2016-12-01 01:33:19 -05:00
Jacob Pan
0f64490978 tools/power/turbostat: Add Denverton RAPL support
The Denverton CPU RAPL supports package, core, and DRAM domains.

Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2016-12-01 01:33:18 -05:00
Jacob Pan
2c48c990ea tools/power/turbostat: Add Denverton support
Denverton is an Atom based micro server which shares the same
Goldmont architecture as Broxton. The available C-states on
Denverton is a subset of Broxton with only C1, C1e, and C6.

Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2016-12-01 01:33:18 -05:00
Jacob Pan
9148494c59 tools/power/turbostat: split core MSR support into status + limit
Some CPUs may not have PP0/Core domain power limit MSRs. We
should still allow its domain energy status to be used. This
patch splits PP0/Core RAPL into two separate flags for power
limit and energy status such that energy status can continue
to be reported without power limit.

Without this patch, turbostat will not be able to use the
remaining RAPL features if some PL MSRs are not present.

Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2016-12-01 01:33:17 -05:00
Colin Ian King
0a91e55152 tools/power turbostat: fix error case overflow read of slm_freq_table[]
When i >= SLM_BCLK_FREQS, the frequency read from the slm_freq_table
is off the end of the array because msr is set to 3 rather than the
actual array index i.  Set i to 3 rather than msr to fix this.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2016-12-01 01:33:17 -05:00
Mika Westerberg
01a67adfc5 tools/power turbostat: Allocate correct amount of fd and irq entries
The tool uses topo.max_cpu_num to determine number of entries needed for
fd_percpu[] and irqs_per_cpu[]. For example on a system with 4 CPUs
topo.max_cpu_num is 3 so we get too small array for holding per-CPU items.

Fix this to use right number of entries, which is topo.max_cpu_num + 1.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2016-12-01 01:33:16 -05:00
Len Brown
3d109de23c tools/power turbostat: switch to tab delimited output
Switch to tab-delimited output from fixed-width columns
to make it simpler to import into spreadsheets.

As the fixed width columnns were 8-spaces wide,
the output on the screen should not change.

Signed-off-by: Len Brown <len.brown@intel.com>
2016-12-01 01:33:16 -05:00
Len Brown
ba3dec99fc tools/power turbostat: Gracefully handle ACPI S3
turbostat gives valid results across suspend to idle, aka freeze,
whether invoked in  interval mode, or in command mode.
Indeed, this can be used to measure suspend to idle:

turbostat echo freeze > /sys/power/state

But this does not work across suspend to ACPI S3, because the
processor counters, including the TSC, are reset on resume.
Further, when turbostat detects a problem, it does't forgive
the hardware, and interval mode will print *'s from there on out.

Instead, upon detecting counters going backwards, simply
reset and start over.

Interval mode across ACPI S3: (observe TSC going backwards)

root@sharkbay:/home/lenb/turbostat-src# ./turbostat -M 0x10
     CPU Avg_MHz   Busy% Bzy_MHz TSC_MHz           MSR 0x010
       -       1    0.06     858    2294  0x0000000000000000
       0       0    0.06     847    2294  0x0000002a254b98ac
       1       1    0.06     878    2294  0x0000002a254efa3a
       2       1    0.07     843    2294  0x0000002a2551df65
       3       0    0.05     863    2294  0x0000002a2553fea2
turbostat: re-initialized with num_cpus 4
     CPU Avg_MHz   Busy% Bzy_MHz TSC_MHz           MSR 0x010
       -       2    0.20     849    2294  0x0000000000000000
       0       2    0.26     856    2294  0x0000000449abb60d
       1       2    0.20     844    2294  0x0000000449b087ec
       2       2    0.21     850    2294  0x0000000449b35d5d
       3       1    0.12     839    2294  0x0000000449b5fd5a
^C

Command mode across ACPI S3:
root@sharkbay:/home/lenb/turbostat-src# ./turbostat -M 0x10 sleep 10
./turbostat: Counter reset detected
14.196299 sec

Signed-off-by: Len Brown <len.brown@intel.com>
2016-12-01 01:33:15 -05:00
Len Brown
e975db5d52 tools/power turbostat: tidy up output on Joule counter overflow
The RAPL Joules counter is limited in capacity.
Turbostat estimates how soon it can roll-over
based on the max TDP of the processor --
which tells us the maximum increment rate.

eg.
RAPL: 2759 sec. Joule Counter Range, at 95 Watts

So if a sample duration is longer than 2759 seconds on this system,
'**' replace the decimal place in the display to indicate
that the results may be suspect.

But the display had an extra ' ' in this case, throwing off the columns.

Also, the -J "Joules" option appended an extra "time" column
to the display.  While this may be useful, it printed the interval time,
which may not be the accurate time per processor.  Remove this column,
which appeared only when using '-J',
as we plan to add accurate per-cpu interval times in a future commit.

Signed-off-by: Len Brown <len.brown@intel.com>
2016-12-01 01:33:15 -05:00
Lv Zheng
d5a4b1a540 tools/power/acpi: Remove direct kernel source include reference
Avoid breaking cross-compiled ACPI tools builds by rearranging the
handling of kernel header files.

This patch also contains OUTPUT/srctree cleanups in order to make above fix
working for various build environments.

Fixes: e323c02dee (ACPICA: MSVC9: Fix <sys/stat.h> inclusion order issue)
Reported-and-tested-by: Yisheng Xie <xieyisheng1@huawei.com>
Reported-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
[ rjw: Changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-11-16 22:31:26 +01:00
Laura Abbott
c25badc9ce cpupower: Correct return type of cpu_power_is_cpu_online() in cpufreq-set
When converting to a shared library in ac5a181d06 ("cpupower: Add
cpuidle parts into library"), cpu_freq_cpu_exists() was converted to
cpupower_is_cpu_online(). cpu_req_cpu_exists() returned 0 on success and
-ENOSYS on failure whereas cpupower_is_cpu_online returns 1 on success.
Check for the correct return value in cpufreq-set.

Link: https://bugzilla.redhat.com/show_bug.cgi?id=1374212
Fixes: ac5a181d06 (cpupower: Add cpuidle parts into library)
Reported-by: Julian Seward <jseward@acm.org>
Signed-off-by: Laura Abbott <labbott@redhat.com>
Acked-by: Thomas Renninger <trenn@suse.com>
Cc: 4.7+ <stable@vger.kernel.org> # 4.7+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-11-01 06:16:52 +01:00
Lv Zheng
b97acdf1b0 ACPICA: MacOSX: Fix wrong sem_destroy definition
ACPICA commit bbcb58f7875381d5c7f3d614bad3bc628a3f5cc6

The following build errors can be seen for MacOSX builds:
.../osunixxf.c:882:9: error: 'sem_close' is deprecated [-Werror,-Wdeprecated-declarations]
.../acmacosx.h:122:29: note: expanded from macro 'sem_destroy'
#define sem_destroy         sem_close

sem_destroy() issue is caused by the wrong order of the following lines:
  #define #sem_destroy        sem_close
  #include <semaphore.h>
This patch fixes it by removing the buggy re-definitiion. Lv Zheng.

Linux is not affected by this change.

Link: https://github.com/acpica/acpica/commit/bbcb58f7
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-10-21 01:33:39 +02:00
Lv Zheng
6c9fd7eda7 ACPICA: MacOSX: Fix anonymous semaphore implementation
ACPICA commit 01eb9a58f4cf6300a0feb838a02bc4b1895c76e8
ACPICA commit de5b9c0ef1ccb264cbe57c88f6dd3fbf8229f907

The following build errors can be seen for MacOSX builds:
.../osunixxf.c:829:42: error: 'tmpnam' is deprecated: This function is provided for compatibility reasons only.  Due to security concerns inherent in the design of tmpnam(3), it is highly recommended that you use mkstemp(3) instead. [-Werror,-Wdeprecated-declarations]

Using of temporal file name functions can easily result in bus errors on
MacOSX. This patch implements anonymous semaphore using an automatic
increasing number. Lv Zheng.

Linux is not affected by this change.

Link: https://github.com/acpica/acpica/commit/01eb9a58
Link: https://github.com/acpica/acpica/commit/de5b9c0e
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-10-21 01:33:39 +02:00
Bob Moore
5ebd2eaaef ACPICA: Cleanup for all string-to-integer conversions
ACPICA commit e2e72a351201fd58e4694418859ae2c247dafca0

Consolidate multiple versions of strtoul64 to one common version.
limit possible bases to either 10 or 16.
Handles both implicit and explicit conversions.
Added a 2-character ascii-to-hex function for GPEs and buffers.
Adds a new file, utstrtoul64.c

Link: https://github.com/acpica/acpica/commit/e2e72a35
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-09-10 02:37:59 +02:00
Lv Zheng
dd99cbcca4 ACPICA: Clib: Eliminate acpi_os_XXXFile()/acpi_log_error and link clibrary fxxx()/errno/perror() instead
ACPICA commit 189429fb7d06cdb89043ae32d615faf553467f1d

This patch follows new ACPICA design, eliminates old portable OSLs, and
implements fopen/fread/fwrite/fclose/fseek/ftell for GNU EFI
environment. This patch also eliminates acpi_log_error(), convering them
into fprintf(stderr)/perror(). Lv Zheng.

Link: https://github.com/acpica/acpica/commit/189429fb
Link: https://bugs.acpica.org/show_bug.cgi?id=1302
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-08-13 03:12:32 +02:00
Lv Zheng
f173a7750e ACPICA: Clib: Add -nostdinc support for EFI layer
ACPICA commit d261d40ea168f8e4c4e3986de720b8651c4aba1c

This patch adds sprintf()/snprintf()/vsnprintf()/printf()/vfprintf()
support for OSPMs that have ACPI_USE_SYSTEM_CLIBRARY defined but do not
have ACPI_USE_STANDARD_HEADERS defined.

-iwithprefix include is required to include <stdarg.h> which contains
compiler specific implementation of vargs when -nostdinc is specified.
-fno-builtin is required for GCC to avoid optimization performed printf().
This optimization cannot be automatically disabled by specifying -nostdlib.
Please refer to the first link below for the details. However, the build
option changes do not affect Linux kernel builds and are not included.
Lv Zheng.

Link: http://www.ciselant.de/projects/gcc_printf/gcc_printf.html
Link: https://github.com/acpica/acpica/commit/d261d40e
Link: https://bugs.acpica.org/show_bug.cgi?id=1302
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-08-13 03:09:35 +02:00
Lv Zheng
e323c02dee ACPICA: MSVC9: Fix <sys/stat.h> inclusion order issue
ACPICA commit 9bb265c2afb9910e46f820d6759648580edabd09

When /Za is specified, headers of some Windows SDKs contain bugs breaking
VC builds, and MSVC9's default SDK is one of such header-buggy library.

In order to solve this issue, many VC developers stop using /Za. However
we've been asked to have this fixed without removing /Za.

In MSVC9 default SDK, this issue can be fixed by restricting <sys/stat.h>
to be the last standard file included by every source file in the projects.
This patch thus moves <sys/stat.h> inclusion to "acapps.h", so that this
issue can be fixed by ensuring that "acapps.h" is always the last standard
file included by all of the ACPICA source files. This is in fact also a
useful cleanup because applications can only include one header (e.x.,
acpidump.h) instead of including acapps.h separately. Lv Zheng.

Except some harmless header inclusion re-ordering, Linux kernel is not
affected by this change.

Link: https://github.com/acpica/acpica/commit/9bb265c2
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-08-13 03:09:35 +02:00
Lv Zheng
4e2fc6a0aa ACPICA: Clib/EFI: Fix wrong order of standard integer types/IO handles
ACPICA commit 7f9b359b7c78c69b07f62eb2d58f710c351fd75d

EFI header should use standard C library stuffs (integer types and IO
handles) rather than implementing such standard stuffs.
This patch fixes this issue by:
1. Implementing standard integer types for ACPI_USE_STANDARD_HADERS=n;
2. Defining EFI types using standard integer types and standard IO handles;
3. Tuning header inclusion order and environment definition order;
4. Removing wrong standard header inclusion from ACPICA core files;
5. Moving several application headers from acpidump.h to acenv.h.
This patch corrects some of them. Lv Zheng.

Except some harmless header inclusion re-ordering, Linux kernel is not
affected by this change.

Link: https://github.com/acpica/acpica/commit/7f9b359b
Link: https://bugs.acpica.org/show_bug.cgi?id=1300
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-08-13 03:09:35 +02:00
Lv Zheng
b597664f8f ACPICA: Clib: Fix build issues when ACPI_USE_STANDARD_HEADERS is not defined by converting size_t to acpi_size
ACPICA commit 7cf411136c69ef0b8f184b96599eb45c15b89226

When standard size_t is not defined due to ACPI_USE_STANDARD_HEADERS=n,
we shouldn't use size_t, but should use acpi_size instead. This fixes such
build issue. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/7cf41113
Link: https://bugs.acpica.org/show_bug.cgi?id=1296
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-08-13 03:09:34 +02:00
Lv Zheng
eba4ed2046 ACPICA: acpidump: Fix a duplicate variable definition
ACPICA commit 080f99d5b29313380accd00d2b9768e809eb417b

acpi_gbl_integer_byte_width has already been instantiated by ACPI_GLOBAL() in
acglobal.h. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/080f99d5
Link: https://bugs.acpica.org/show_bug.cgi?id=1301
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-08-13 03:09:34 +02:00
Lv Zheng
722280ecac ACPICA: OSL: Add correct acpi_gbl_debug_timeout export to allow acpiexec to link
ACPICA commit 408198c8c9786f9f104ee925020c3ab1701906e4

The acpi_gbl_debug_timeout which is used by acpiexec -et option now is only
implemented in oswinxf.c and used for WIN32 builds. This makes it very
difficult to remember that we need to add this variable to other os
specific layer files in order for linking. This patch makes it a global
option dependent on ACPI_APPLICATION so that it can always be linked by the
applications. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/408198c8
Link: https://bugs.acpica.org/show_bug.cgi?id=1295
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-08-13 03:09:33 +02:00
Bob Moore
d8303ace36 ACPICA: iASL/Disassembler: Add a check for missing filename
ACPICA commit fc0f12b1eff6253f83e599a7ee1765fcc8e42dcc

Add check for required filename for the -d and -da options.
ACPICA BZ 1285.

Link: https://github.com/acpica/acpica/commit/fc0f12b1
Link: https://bugs.acpica.org/show_bug.cgi?id=1285
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-08-13 03:09:33 +02:00
Linus Torvalds
e663107fa1 ACPI material for v4.8-rc1
- Support for ACPI SSDT overlays allowing Secondary System
    Description Tables (SSDTs) to be loaded at any time from EFI
    variables or via configfs (Octavian Purdila, Mika Westerberg).
 
  - Support for the ACPI LPI (Low-Power Idle) feature introduced in
    ACPI 6.0 and allowing processor idle states to be represented in
    ACPI tables in a hierarchical way (with the help of Processor
    Container objects) and support for ACPI idle states management
    on ARM64, based on LPI (Sudeep Holla).
 
  - General improvements of ACPI support for NUMA and ARM64 support
    for ACPI-based NUMA (Hanjun Guo, David Daney, Robert Richter).
 
  - General improvements of the ACPI table upgrade mechanism and
    ARM64 support for that feature (Aleksey Makarov, Jon Masters).
 
  - Support for the Boot Error Record Table (BERT) in APEI and
    improvements of kernel messages printed by the error injection
    code (Huang Ying, Borislav Petkov).
 
  - New driver for the Intel Broxton WhiskeyCove PMIC operation
    region and support for the REGS operation region on Broxton,
    PMIC code cleanups (Bin Gao, Felipe Balbi, Paul Gortmaker).
 
  - New driver for the power participant device which is part of the
    Dynamic Power and Thermal Framework (DPTF) and DPTF-related code
    reorganization (Srinivas Pandruvada).
 
  - Support for the platform-initiated graceful shutdown feature
    introduced in ACPI 6.1 (Prashanth Prakash).
 
  - ACPI button driver update related to lid input events generated
    automatically on initialization and system resume that have been
    problematic for some time (Lv Zheng).
 
  - ACPI EC driver cleanups (Lv Zheng).
 
  - Documentation of the ACPICA release automation process and the
    in-kernel ACPI AML debugger (Lv Zheng).
 
  - New blacklist entry and two fixes for the ACPI backlight driver
    (Alex Hung, Arvind Yadav, Ralf Gerbig).
 
  - Cleanups of the ACPI pci_slot driver (Joe Perches, Paul Gortmaker).
 
  - ACPI CPPC code changes to make it more robust against possible
    defects in ACPI tables and new symbol definitions for PCC (Hoan
    Tran).
 
  - System reboot code modification to execute the ACPI _PTS (Prepare
    To Sleep) method in addition to _TTS (Ocean He).
 
  - ACPICA-related change to carry out lock ordering checks in ACPICA
    if ACPICA debug is enabled in the kernel (Lv Zheng).
 
  - Assorted minor fixes and cleanups (Andy Shevchenko, Baoquan He,
    Bhaktipriya Shridhar, Paul Gortmaker, Rafael Wysocki).
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Merge tag 'acpi-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI updates from Rafael Wysocki:
 "The new feaures here are the support for ACPI overlays (allowing ACPI
  tables to be loaded at any time from EFI variables or via configfs)
  and the LPI (Low-Power Idle) support.  Also notable is the ACPI-based
  NUMA support for ARM64.

  Apart from that we have two new drivers, for the DPTF (Dynamic Power
  and Thermal Framework) power participant device and for the Intel
  Broxton WhiskeyCove PMIC, some more PMIC-related changes, support for
  the Boot Error Record Table (BERT) in APEI and support for
  platform-initiated graceful shutdown.

  Plus two new pieces of documentation and usual assorted fixes and
  cleanups in quite a few places.

  Specifics:

   - Support for ACPI SSDT overlays allowing Secondary System
     Description Tables (SSDTs) to be loaded at any time from EFI
     variables or via configfs (Octavian Purdila, Mika Westerberg).

   - Support for the ACPI LPI (Low-Power Idle) feature introduced in
     ACPI 6.0 and allowing processor idle states to be represented in
     ACPI tables in a hierarchical way (with the help of Processor
     Container objects) and support for ACPI idle states management on
     ARM64, based on LPI (Sudeep Holla).

   - General improvements of ACPI support for NUMA and ARM64 support for
     ACPI-based NUMA (Hanjun Guo, David Daney, Robert Richter).

   - General improvements of the ACPI table upgrade mechanism and ARM64
     support for that feature (Aleksey Makarov, Jon Masters).

   - Support for the Boot Error Record Table (BERT) in APEI and
     improvements of kernel messages printed by the error injection code
     (Huang Ying, Borislav Petkov).

   - New driver for the Intel Broxton WhiskeyCove PMIC operation region
     and support for the REGS operation region on Broxton, PMIC code
     cleanups (Bin Gao, Felipe Balbi, Paul Gortmaker).

   - New driver for the power participant device which is part of the
     Dynamic Power and Thermal Framework (DPTF) and DPTF-related code
     reorganization (Srinivas Pandruvada).

   - Support for the platform-initiated graceful shutdown feature
     introduced in ACPI 6.1 (Prashanth Prakash).

   - ACPI button driver update related to lid input events generated
     automatically on initialization and system resume that have been
     problematic for some time (Lv Zheng).

   - ACPI EC driver cleanups (Lv Zheng).

   - Documentation of the ACPICA release automation process and the
     in-kernel ACPI AML debugger (Lv Zheng).

   - New blacklist entry and two fixes for the ACPI backlight driver
     (Alex Hung, Arvind Yadav, Ralf Gerbig).

   - Cleanups of the ACPI pci_slot driver (Joe Perches, Paul Gortmaker).

   - ACPI CPPC code changes to make it more robust against possible
     defects in ACPI tables and new symbol definitions for PCC (Hoan
     Tran).

   - System reboot code modification to execute the ACPI _PTS (Prepare
     To Sleep) method in addition to _TTS (Ocean He).

   - ACPICA-related change to carry out lock ordering checks in ACPICA
     if ACPICA debug is enabled in the kernel (Lv Zheng).

   - Assorted minor fixes and cleanups (Andy Shevchenko, Baoquan He,
     Bhaktipriya Shridhar, Paul Gortmaker, Rafael Wysocki)"

* tag 'acpi-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (71 commits)
  ACPI: enable ACPI_PROCESSOR_IDLE on ARM64
  arm64: add support for ACPI Low Power Idle(LPI)
  drivers: firmware: psci: initialise idle states using ACPI LPI
  cpuidle: introduce CPU_PM_CPU_IDLE_ENTER macro for ARM{32, 64}
  arm64: cpuidle: drop __init section marker to arm_cpuidle_init
  ACPI / processor_idle: Add support for Low Power Idle(LPI) states
  ACPI / processor_idle: introduce ACPI_PROCESSOR_CSTATE
  ACPI / DPTF: move int340x_thermal.c to the DPTF folder
  ACPI / DPTF: Add DPTF power participant driver
  ACPI / lpat: make it explicitly non-modular
  ACPI / dock: make dock explicitly non-modular
  ACPI / PCI: make pci_slot explicitly non-modular
  ACPI / PMIC: remove modular references from non-modular code
  ACPICA: Linux: Enable ACPI_MUTEX_DEBUG for Linux kernel
  ACPI: Rename configfs.c to acpi_configfs.c to prevent link error
  ACPI / debugger: Add AML debugger documentation
  ACPI: Add documentation describing ACPICA release automation
  ACPI: add support for loading SSDTs via configfs
  ACPI: add support for configfs
  efi / ACPI: load SSTDs from EFI variables
  ...
2016-07-26 17:56:45 -07:00
Srinivas Pandruvada
ebf5926a00 tools/power turbostat: Replace MSR_NHM_TURBO_RATIO_LIMIT
Replace MSR_NHM_TURBO_RATIO_LIMIT with MSR_TURBO_RATIO_LIMIT.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-07-07 15:31:59 +02:00
Andy Shevchenko
ac485cb4b3 tools/turbostat: allow user to alter DESTDIR and PREFIX
When run
	make -C tools DESTDIR=/my/nice/dir turbostat_install
get a message
	install: cannot create regular file '/usr/bin/turbostat': Permission denied

Allow user to alter DESTDIR and PREFIX variables.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-06-28 00:37:04 +02:00
Andy Shevchenko
a3bcf2d45d tools/acpi: use CROSS_COMPILE to define prefix
CROSS_COMPILE can be considered as standard definition for toolchain prefix
when cross-compiling. Use it here.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-06-23 15:32:16 +02:00
Linus Torvalds
46c1345062 ACPI material for v4.7-rc1
- In-kernel ACPICA code update to the upstream release 20160422
    adding support for ACPI 6.1 along with some previously missing
    bits of ACPI 6.0 support, making a fair amount of fixes and
    cleanups and reducing divergences between the upstream ACPICA
    and the in-kernel code (Bob Moore, Lv Zheng, Al Stone, Aleksey
    Makarov, Will Miles).
 
  - ACPI Generic Event Device (GED) support and a fix for it (Sinan Kaya,
    Paul Gortmaker).
 
  - INT3406 thermal driver for display thermal management and ACPI
    backlight support code reorganization related to it (Aaron Lu,
    Arnd Bergmann).
 
  - Support for exporting the value returned by the _HRV (hardware
    revision) ACPI object via sysfs (Betty Dall).
 
  - Removal of the EXPERT dependency for ACPI on ARM64 (Mark Brown).
 
  - Rework of the handling of ACPI _OSI mechanism allowing the
    _OSI("Darwin") support to be overridden from the kernel command
    line among other things (Lv Zheng, Chen Yu).
 
  - Rework of the ACPI tables override mechanism to prepare it for
    the introduction of overlays support going forward (Lv Zheng,
    Rafael Wysocki).
 
  - Fixes related to the ECDT support and module-level execution
    of AML (Lv Zheng).
 
  - ACPI PCI interrupts management update to make it work better on
    ARM64 mostly (Sinan Kaya).
 
  - ACPI SRAT handling update to make the code process all entires
    in the table order regardless of the entry type (Lukasz Anaczkowski).
 
  - EFI power off support for full-hardware ACPI platforms that don't
    support ACPI S5 (Chen Yu).
 
  - Fixes and cleanups related to the ACPI core's sysfs interface
    (Dan Carpenter, Betty Dall).
 
  - acpi_dev_present() API rework to reduce possible confusion related
    to it (Lukas Wunner).
 
  - Removal of CLK_IS_ROOT from two ACPI drivers (Stephen Boyd).
 
 /
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Merge tag 'acpi-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI updates from Rafael Wysocki:
 "The new features here are ACPI 6.1 support (and some previously
  missing bits of ACPI 6.0 support) in ACPICA and two new drivers, a
  driver for the ACPI Generic Event Device (GED) feature introduced by
  ACPI 6.1 and the INT3406 thermal driver for display thermal
  management.  Also the value returned by the _HRV (hardware revision)
  ACPI object will be exported to user space via sysfs now.

  In addition to that, ACPI on ARM64 will not depend on EXPERT any more.

  The rest is mostly fixes and cleanups and some code reorganization.

  Specifics:

   - In-kernel ACPICA code update to the upstream release 20160422
     adding support for ACPI 6.1 along with some previously missing bits
     of ACPI 6.0 support, making a fair amount of fixes and cleanups and
     reducing divergences between the upstream ACPICA and the in-kernel
     code (Bob Moore, Lv Zheng, Al Stone, Aleksey Makarov, Will Miles)

   - ACPI Generic Event Device (GED) support and a fix for it (Sinan
     Kaya, Paul Gortmaker)

   - INT3406 thermal driver for display thermal management and ACPI
     backlight support code reorganization related to it (Aaron Lu, Arnd
     Bergmann)

   - Support for exporting the value returned by the _HRV (hardware
     revision) ACPI object via sysfs (Betty Dall)

   - Removal of the EXPERT dependency for ACPI on ARM64 (Mark Brown)

   - Rework of the handling of ACPI _OSI mechanism allowing the
     _OSI("Darwin") support to be overridden from the kernel command
     line among other things (Lv Zheng, Chen Yu)

   - Rework of the ACPI tables override mechanism to prepare it for the
     introduction of overlays support going forward (Lv Zheng, Rafael
     Wysocki)

   - Fixes related to the ECDT support and module-level execution of AML
     (Lv Zheng)

   - ACPI PCI interrupts management update to make it work better on
     ARM64 mostly (Sinan Kaya)

   - ACPI SRAT handling update to make the code process all entires in
     the table order regardless of the entry type (Lukasz Anaczkowski)

   - EFI power off support for full-hardware ACPI platforms that don't
     support ACPI S5 (Chen Yu)

   - Fixes and cleanups related to the ACPI core's sysfs interface (Dan
     Carpenter, Betty Dall)

   - acpi_dev_present() API rework to reduce possible confusion related
     to it (Lukas Wunner)

   - Removal of CLK_IS_ROOT from two ACPI drivers (Stephen Boyd)"

* tag 'acpi-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (82 commits)
  ACPI / video: mark acpi_video_get_levels() inline
  Thermal / ACPI / video: add INT3406 thermal driver
  ACPI / GED: make evged.c explicitly non-modular
  ACPI / tables: Fix DSDT override mechanism
  ACPI / sysfs: fix error code in get_status()
  ACPICA: Update version to 20160422
  ACPICA: Move all ASCII utilities to a common file
  ACPICA: ACPI 2.0, Hardware: Add access_width/bit_offset support for acpi_hw_write()
  ACPICA: ACPI 2.0, Hardware: Add access_width/bit_offset support in acpi_hw_read()
  ACPICA: Executer: Introduce a set of macros to handle bit width mask generation
  ACPICA: Hardware: Add optimized access bit width support
  ACPICA: Utilities: Add ACPI_IS_ALIGNED() macro
  ACPICA: Renamed some #defined flag constants for clarity
  ACPICA: ACPI 6.0, tools/iasl: Add support for new resource descriptors
  ACPICA: ACPI 6.0: Update _BIX support for new package element
  ACPICA: ACPI 6.1: Support for new PCCT subtable
  ACPICA: Refactor evaluate_object to reduce nesting
  ACPICA: Divergence: remove unwanted spaces for typedef
  ACPI,PCI,IRQ: remove SCI penalize function
  ACPI,PCI,IRQ: remove redundant code in acpi_irq_penalty_init()
  ..
2016-05-16 19:41:41 -07:00
Rafael J. Wysocki
fc72395780 Merge branches 'acpi-pci', 'acpi-misc' and 'acpi-tools'
* acpi-pci:
  ACPI,PCI,IRQ: remove SCI penalize function
  ACPI,PCI,IRQ: remove redundant code in acpi_irq_penalty_init()
  ACPI,PCI,IRQ: reduce static IRQ array size to 16
  ACPI,PCI,IRQ: reduce resource requirements

* acpi-misc:
  ACPI / sysfs: fix error code in get_status()
  ACPI / device_sysfs: Clean up checkpatch errors
  ACPI / device_sysfs: Change _SUN and _STA show functions error return to EIO
  ACPI / device_sysfs: Add sysfs support for _HRV hardware revision
  arm64: defconfig: Enable ACPI
  ACPI / ARM64: Remove EXPERT dependency for ACPI on ARM64
  ACPI / ARM64: Don't enable ACPI by default on ARM64
  acer-wmi: Use acpi_dev_found()
  eeepc-wmi: Use acpi_dev_found()
  ACPI / utils: Rename acpi_dev_present()

* acpi-tools:
  tools/power/acpi: close file only if it is open
2016-05-16 16:45:48 +02:00
Rafael J. Wysocki
d1ce3bb955 Merge back new ACPICA material for v4.7. 2016-05-06 01:41:06 +02:00
Bob Moore
6a0df32c22 ACPICA: Move all ASCII utilities to a common file
ACPICA commit ba60e4500053010bf775d58f6f61febbdb94d817

New file is utascii.c

Link: https://github.com/acpica/acpica/commit/ba60e450
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05 15:22:28 +02:00
Lv Zheng
f5c1e1c5a6 ACPICA: Divergence: remove unwanted spaces for typedef
ACPICA commit b2294cae776f5a66a7697414b21949d307e6856f

This patch removes unwanted spaces for typedef. This solution doesn't cover
function types.

Note that the linuxize result of this commit is very giant and should have
many conflicts against the current Linux upstream. Thus it is required to
modify the linuxize result of this commit and the commits around it
manually in order to have them merged to the Linux upstream. Since this is
very costy, we should do this only once, and if we can't ensure to do this
only once, we need to revert the Linux code to the wrong indentation result
before merging the linuxize result of this commit. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/b2294cae
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05 15:14:35 +02:00
Arjun Sreedharan
0b81561c1d cpupower: fix potential memory leak
Signed-off-by: Thomas Renninger <trenn@suse.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-05-05 01:19:38 +02:00
Thomas Renninger
ac5a181d06 cpupower: Add cpuidle parts into library
This more or less is a renaming and moving of functions and should not
introduce any functional change.

cpupower was built from cpufrequtils (which had a C library providing easy
access to cpu frequency platform info). In the meantime it got enhanced
by quite some neat cpuidle userspace tools.

Now the cpu idle functions have been separated and added to the cpupower.so
library.
So beside an already existing public header file:
cpufreq.h
cpupower now also exports these cpu idle functions in:
cpuidle.h

Here again pasted for better review of the interfaces:

======================================
int cpuidle_is_state_disabled(unsigned int cpu,
                                       unsigned int idlestate);
int cpuidle_state_disable(unsigned int cpu, unsigned int idlestate,
                                   unsigned int disable);
unsigned long cpuidle_state_latency(unsigned int cpu,
                                                unsigned int idlestate);
unsigned long cpuidle_state_usage(unsigned int cpu,
                                        unsigned int idlestate);
unsigned long long cpuidle_state_time(unsigned int cpu,
                                                unsigned int idlestate);
char *cpuidle_state_name(unsigned int cpu,
                                unsigned int idlestate);
char *cpuidle_state_desc(unsigned int cpu,
                                unsigned int idlestate);
unsigned int cpuidle_state_count(unsigned int cpu);

char *cpuidle_get_governor(void);
char *cpuidle_get_driver(void);

======================================

Signed-off-by: Thomas Renninger <trenn@suse.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-04-28 16:02:29 +02:00
Colin Ian King
fe7656a8e8 cpupowerutils: bench: trivial fix of spelling mistake on "average"
fix spelling mistake, avarage -> average

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Thomas Renninger <trenn@suse.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-04-28 16:02:29 +02:00
Mattia Dongili
938bb850d5 Fix cpupower manpages "NAME" section
The token before "-" should be the program name, no spaces allowed.
See man(7) and lexgrog(1).

Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Thomas Renninger <trenn@suse.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-04-28 16:02:29 +02:00
Colin Ian King
983d9e065b cpupower: bench: parse.c: fix several resource leaks
The error handling in prepare_output has several issues with
resource leaks.  Ensure that filename is free'd and the directory
stream DIR is closed before returning.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Thomas Renninger <trenn@suse.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-04-28 16:02:28 +02:00
Mattia Dongili
04b03594c7 Honour user's LDFLAGS
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Thomas Renninger <trenn@suse.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-04-28 16:02:28 +02:00
Lv Zheng
60438d9a1e tools/power/acpi: close file only if it is open
The logic on the test for a valid fd to close is incorrect.
This was just a mistake and was pointed out by Colin Ian King.

Link: https://patchwork.kernel.org/patch/8620201/
Original-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-04-09 03:08:40 +02:00
Rafael J. Wysocki
73659be769 Merge branches 'pm-core', 'powercap' and 'pm-tools'
* pm-core:
  PM / wakeirq: fix wakeirq setting after wakup re-configuration from sysfs
  PM / runtime: Document steps for device removal

* powercap:
  powercap: intel_rapl: Add missing Haswell model

* pm-tools:
  tools/power turbostat: work around RC6 counter wrap
  tools/power turbostat: initial KBL support
  tools/power turbostat: initial SKX support
  tools/power turbostat: decode BXT TSC frequency via CPUID
  tools/power turbostat: initial BXT support
  tools/power turbostat: print IRTL MSRs
  tools/power turbostat: SGX state should print only if --debug
2016-04-08 21:46:56 +02:00
Len Brown
9185e988e9 tools/power turbostat: work around RC6 counter wrap
Sometimes the rc6 sysfs counter spontaneously resets,
causing turbostat prints a very large number
as it tries to calcuate % = 100 * (old - new) / interval

When we see (old > new), print ***.**% instead
of a bogus huge number.

Note that this detection is not fool-proof, as the counter
could reset several times and still result in new > old.

Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-04-07 22:18:40 +02:00
Len Brown
cdc57272ea tools/power turbostat: initial KBL support
KBL is similar to SKL

Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-04-07 22:18:38 +02:00
Len Brown
ec53e594c6 tools/power turbostat: initial SKX support
SKX has a lot in common with HSX

Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-04-07 22:18:36 +02:00
Len Brown
e8efbc80db tools/power turbostat: decode BXT TSC frequency via CPUID
Hard-code BXT ART to 19200MHz, so turbostat --debug
can fully enumerate TSC:

CPUID(0x15): eax_crystal: 3 ebx_tsc: 186 ecx_crystal_hz: 0
TSC: 1190 MHz (19200000 Hz * 186 / 3 / 1000000)

Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-04-07 22:18:35 +02:00
Len Brown
e4085d543e tools/power turbostat: initial BXT support
Broxton has a lot in common with SKL

Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-04-07 22:18:33 +02:00
Len Brown
5a63426e2a tools/power turbostat: print IRTL MSRs
Some processors use the Interrupt Response Time Limit (IRTL) MSR value
to describe the maximum IRQ response time latency for deep
package C-states.  (Though others have the register, but do not use it)
Lets print it out to give insight into the cases where it is used.

IRTL begain in SNB, with PC3/PC6/PC7, and HSW added PC8/PC9/PC10.

Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-04-07 22:18:32 +02:00
Len Brown
8ae7225591 tools/power turbostat: SGX state should print only if --debug
The CPUID.SGX bit was printed, even if --debug was used

Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-04-07 22:18:30 +02:00
Bob Moore
3a05be7575 ACPICA: Utilities: Update for strtoul64 merger
ACPICA commit 795e136d2ac77c1c8b091fba019b5fe36a44a323

Fixes a problem with the merger of the two internal versions
of this function. Make the maximum integer width (32-bit or
64-bit) a parameter to the function so that it no longer
exclusively uses the integer width specified in the DSDT/SSDT.
ACPICA BZ 1260

Link: https://github.com/acpica/acpica/commit/795e136d
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-04-05 03:53:33 +02:00
Will Miles
53c78d75d8 ACPICA: Add support for QNX 6.6 platform
ACPICA commit 37a1dec2391272251e59948c16c60713183ae78f

Link: https://github.com/acpica/acpica/commit/37a1dec2
Signed-off-by: Will Miles <wmiles@sgl.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-04-05 03:53:32 +02:00
Linus Torvalds
277edbabf6 Power management and ACPI material for v4.6-rc1, part 1
- Redesign of cpufreq governors and the intel_pstate driver to
    make them use callbacks invoked by the scheduler to trigger CPU
    frequency evaluation instead of using per-CPU deferrable timers
    for that purpose (Rafael Wysocki).
 
  - Reorganization and cleanup of cpufreq governor code to make it
    more straightforward and fix some concurrency problems in it
    (Rafael Wysocki, Viresh Kumar).
 
  - Cleanup and improvements of locking in the cpufreq core (Viresh
    Kumar).
 
  - Assorted cleanups in the cpufreq core (Rafael Wysocki, Viresh
    Kumar, Eric Biggers).
 
  - intel_pstate driver updates including fixes, optimizations and a
    modification to make it enable enable hardware-coordinated P-state
    selection (HWP) by default if supported by the processor (Philippe
    Longepe, Srinivas Pandruvada, Rafael Wysocki, Viresh Kumar, Felipe
    Franciosi).
 
  - Operating Performance Points (OPP) framework updates to improve
    its handling of voltage regulators and device clocks and updates
    of the cpufreq-dt driver on top of that (Viresh Kumar, Jon Hunter).
 
  - Updates of the powernv cpufreq driver to fix initialization
    and cleanup problems in it and correct its worker thread handling
    with respect to CPU offline, new powernv_throttle tracepoint
    (Shilpasri Bhat).
 
  - ACPI cpufreq driver optimization and cleanup (Rafael Wysocki).
 
  - ACPICA updates including one fix for a regression introduced
    by previos changes in the ACPICA code (Bob Moore, Lv Zheng,
    David Box, Colin Ian King).
 
  - Support for installing ACPI tables from initrd (Lv Zheng).
 
  - Optimizations of the ACPI CPPC code (Prashanth Prakash, Ashwin
    Chaugule).
 
  - Support for _HID(ACPI0010) devices (ACPI processor containers)
    and ACPI processor driver cleanups (Sudeep Holla).
 
  - Support for ACPI-based enumeration of the AMBA bus (Graeme Gregory,
    Aleksey Makarov).
 
  - Modification of the ACPI PCI IRQ management code to make it treat
    255 in the Interrupt Line register as "not connected" on x86 (as
    per the specification) and avoid attempts to use that value as
    a valid interrupt vector (Chen Fan).
 
  - ACPI APEI fixes related to resource leaks (Josh Hunt).
 
  - Removal of modularity from a few ACPI drivers (BGRT, GHES,
    intel_pmic_crc) that cannot be built as modules in practice (Paul
    Gortmaker).
 
  - PNP framework update to make it treat ACPI_RESOURCE_TYPE_SERIAL_BUS
    as a valid resource type (Harb Abdulhamid).
 
  - New device ID (future AMD I2C controller) in the ACPI driver for
    AMD SoCs (APD) and in the designware I2C driver (Xiangliang Yu).
 
  - Assorted ACPI cleanups (Colin Ian King, Kaiyen Chang, Oleg Drokin).
 
  - cpuidle menu governor optimization to avoid a square root
    computation in it (Rasmus Villemoes).
 
  - Fix for potential use-after-free in the generic device properties
    framework (Heikki Krogerus).
 
  - Updates of the generic power domains (genpd) framework including
    support for multiple power states of a domain, fixes and debugfs
    output improvements (Axel Haslam, Jon Hunter, Laurent Pinchart,
    Geert Uytterhoeven).
 
  - Intel RAPL power capping driver updates to reduce IPI overhead in
    it (Jacob Pan).
 
  - System suspend/hibernation code cleanups (Eric Biggers, Saurabh
    Sengar).
 
  - Year 2038 fix for the process freezer (Abhilash Jindal).
 
  - turbostat utility updates including new features (decoding of more
    registers and CPUID fields, sub-second intervals support, GFX MHz
    and RC6 printout, --out command line option), fixes (syscall jitter
    detection and workaround, reductioin of the number of syscalls made,
    fixes related to Xeon x200 processors, compiler warning fixes) and
    cleanups (Len Brown, Hubert Chrzaniuk, Chen Yu).
 
 /
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Merge tag 'pm+acpi-4.6-rc1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management and ACPI updates from Rafael Wysocki:
 "This time the majority of changes go into cpufreq and they are
  significant.

  First off, the way CPU frequency updates are triggered is different
  now.  Instead of having to set up and manage a deferrable timer for
  each CPU in the system to evaluate and possibly change its frequency
  periodically, cpufreq governors set up callbacks to be invoked by the
  scheduler on a regular basis (basically on utilization updates).  The
  "old" governors, "ondemand" and "conservative", still do all of their
  work in process context (although that is triggered by the scheduler
  now), but intel_pstate does it all in the callback invoked by the
  scheduler with no need for any additional asynchronous processing.

  Of course, this eliminates the overhead related to the management of
  all those timers, but also it allows the cpufreq governor code to be
  simplified quite a bit.  On top of that, the common code and data
  structures used by the "ondemand" and "conservative" governors are
  cleaned up and made more straightforward and some long-standing and
  quite annoying problems are addressed.  In particular, the handling of
  governor sysfs attributes is modified and the related locking becomes
  more fine grained which allows some concurrency problems to be avoided
  (particularly deadlocks with the core cpufreq code).

  In principle, the new mechanism for triggering frequency updates
  allows utilization information to be passed from the scheduler to
  cpufreq.  Although the current code doesn't make use of it, in the
  works is a new cpufreq governor that will make decisions based on the
  scheduler's utilization data.  That should allow the scheduler and
  cpufreq to work more closely together in the long run.

  In addition to the core and governor changes, cpufreq drivers are
  updated too.  Fixes and optimizations go into intel_pstate, the
  cpufreq-dt driver is updated on top of some modification in the
  Operating Performance Points (OPP) framework and there are fixes and
  other updates in the powernv cpufreq driver.

  Apart from the cpufreq updates there is some new ACPICA material,
  including a fix for a problem introduced by previous ACPICA updates,
  and some less significant changes in the ACPI code, like CPPC code
  optimizations, ACPI processor driver cleanups and support for loading
  ACPI tables from initrd.

  Also updated are the generic power domains framework, the Intel RAPL
  power capping driver and the turbostat utility and we have a bunch of
  traditional assorted fixes and cleanups.

  Specifics:

   - Redesign of cpufreq governors and the intel_pstate driver to make
     them use callbacks invoked by the scheduler to trigger CPU
     frequency evaluation instead of using per-CPU deferrable timers for
     that purpose (Rafael Wysocki).

   - Reorganization and cleanup of cpufreq governor code to make it more
     straightforward and fix some concurrency problems in it (Rafael
     Wysocki, Viresh Kumar).

   - Cleanup and improvements of locking in the cpufreq core (Viresh
     Kumar).

   - Assorted cleanups in the cpufreq core (Rafael Wysocki, Viresh
     Kumar, Eric Biggers).

   - intel_pstate driver updates including fixes, optimizations and a
     modification to make it enable enable hardware-coordinated P-state
     selection (HWP) by default if supported by the processor (Philippe
     Longepe, Srinivas Pandruvada, Rafael Wysocki, Viresh Kumar, Felipe
     Franciosi).

   - Operating Performance Points (OPP) framework updates to improve its
     handling of voltage regulators and device clocks and updates of the
     cpufreq-dt driver on top of that (Viresh Kumar, Jon Hunter).

   - Updates of the powernv cpufreq driver to fix initialization and
     cleanup problems in it and correct its worker thread handling with
     respect to CPU offline, new powernv_throttle tracepoint (Shilpasri
     Bhat).

   - ACPI cpufreq driver optimization and cleanup (Rafael Wysocki).

   - ACPICA updates including one fix for a regression introduced by
     previos changes in the ACPICA code (Bob Moore, Lv Zheng, David Box,
     Colin Ian King).

   - Support for installing ACPI tables from initrd (Lv Zheng).

   - Optimizations of the ACPI CPPC code (Prashanth Prakash, Ashwin
     Chaugule).

   - Support for _HID(ACPI0010) devices (ACPI processor containers) and
     ACPI processor driver cleanups (Sudeep Holla).

   - Support for ACPI-based enumeration of the AMBA bus (Graeme Gregory,
     Aleksey Makarov).

   - Modification of the ACPI PCI IRQ management code to make it treat
     255 in the Interrupt Line register as "not connected" on x86 (as
     per the specification) and avoid attempts to use that value as a
     valid interrupt vector (Chen Fan).

   - ACPI APEI fixes related to resource leaks (Josh Hunt).

   - Removal of modularity from a few ACPI drivers (BGRT, GHES,
     intel_pmic_crc) that cannot be built as modules in practice (Paul
     Gortmaker).

   - PNP framework update to make it treat ACPI_RESOURCE_TYPE_SERIAL_BUS
     as a valid resource type (Harb Abdulhamid).

   - New device ID (future AMD I2C controller) in the ACPI driver for
     AMD SoCs (APD) and in the designware I2C driver (Xiangliang Yu).

   - Assorted ACPI cleanups (Colin Ian King, Kaiyen Chang, Oleg Drokin).

   - cpuidle menu governor optimization to avoid a square root
     computation in it (Rasmus Villemoes).

   - Fix for potential use-after-free in the generic device properties
     framework (Heikki Krogerus).

   - Updates of the generic power domains (genpd) framework including
     support for multiple power states of a domain, fixes and debugfs
     output improvements (Axel Haslam, Jon Hunter, Laurent Pinchart,
     Geert Uytterhoeven).

   - Intel RAPL power capping driver updates to reduce IPI overhead in
     it (Jacob Pan).

   - System suspend/hibernation code cleanups (Eric Biggers, Saurabh
     Sengar).

   - Year 2038 fix for the process freezer (Abhilash Jindal).

   - turbostat utility updates including new features (decoding of more
     registers and CPUID fields, sub-second intervals support, GFX MHz
     and RC6 printout, --out command line option), fixes (syscall jitter
     detection and workaround, reductioin of the number of syscalls
     made, fixes related to Xeon x200 processors, compiler warning
     fixes) and cleanups (Len Brown, Hubert Chrzaniuk, Chen Yu)"

* tag 'pm+acpi-4.6-rc1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (182 commits)
  tools/power turbostat: bugfix: TDP MSRs print bits fixing
  tools/power turbostat: correct output for MSR_NHM_SNB_PKG_CST_CFG_CTL dump
  tools/power turbostat: call __cpuid() instead of __get_cpuid()
  tools/power turbostat: indicate SMX and SGX support
  tools/power turbostat: detect and work around syscall jitter
  tools/power turbostat: show GFX%rc6
  tools/power turbostat: show GFXMHz
  tools/power turbostat: show IRQs per CPU
  tools/power turbostat: make fewer systems calls
  tools/power turbostat: fix compiler warnings
  tools/power turbostat: add --out option for saving output in a file
  tools/power turbostat: re-name "%Busy" field to "Busy%"
  tools/power turbostat: Intel Xeon x200: fix turbo-ratio decoding
  tools/power turbostat: Intel Xeon x200: fix erroneous bclk value
  tools/power turbostat: allow sub-sec intervals
  ACPI / APEI: ERST: Fixed leaked resources in erst_init
  ACPI / APEI: Fix leaked resources
  intel_pstate: Do not skip samples partially
  intel_pstate: Remove freq calculation from intel_pstate_calc_busy()
  intel_pstate: Move intel_pstate_calc_busy() into get_target_pstate_use_performance()
  ...
2016-03-16 14:10:53 -07:00
Rafael J. Wysocki
3fdb74649b Merge branch 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux into pm-tools
Pull turbostat updates for 4.6 from Len Brown.

* 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
  tools/power turbostat: bugfix: TDP MSRs print bits fixing
  tools/power turbostat: correct output for MSR_NHM_SNB_PKG_CST_CFG_CTL dump
  tools/power turbostat: call __cpuid() instead of __get_cpuid()
  tools/power turbostat: indicate SMX and SGX support
  tools/power turbostat: detect and work around syscall jitter
  tools/power turbostat: show GFX%rc6
  tools/power turbostat: show GFXMHz
  tools/power turbostat: show IRQs per CPU
  tools/power turbostat: make fewer systems calls
  tools/power turbostat: fix compiler warnings
  tools/power turbostat: add --out option for saving output in a file
  tools/power turbostat: re-name "%Busy" field to "Busy%"
  tools/power turbostat: Intel Xeon x200: fix turbo-ratio decoding
  tools/power turbostat: Intel Xeon x200: fix erroneous bclk value
  tools/power turbostat: allow sub-sec intervals
  tools/power turbostat: Decode MSR_MISC_PWR_MGMT
  tools/power turbostat: decode HWP registers
  x86 msr-index: Simplify syntax for HWP fields
  tools/power turbostat: CPUID(0x16) leaf shows base, max, and bus frequency
  tools/power turbostat: decode more CPUID fields
2016-03-14 02:13:05 +01:00
Chen Yu
685b535b2c tools/power turbostat: bugfix: TDP MSRs print bits fixing
MSR_CONFIG_TDP_NOMINAL:
should print all 8 bits of base_ratio (bit 0:7) 0xFF

MSR_CONFIG_TDP_LEVEL_1:
should print all 15 bits of PKG_MIN_PWR_LVL1 (bit 48:62) 0x7FFF
should print all 15 bits of PKG_MAX_PWR_LVL1 (bit 32:46) 0x7FFF
should print all 8 bits of LVL1_RATIO (bit 16:23) 0xFF
should print all 15 bits of PKG_TDP_LVL1 (bit 0:14) 0x7FFF

And the same modification to MSR_CONFIG_TDP_LEVEL_2.

MSR_TURBO_ACTIVATION_RATIO:
should print all 8 bits of MAX_NON_TURBO_RATIO (bit 0:7) 0xFF

Signed-off-by: Chen Yu <yu.c.chen@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2016-03-13 04:22:57 -04:00
Len Brown
6c34f160df tools/power turbostat: correct output for MSR_NHM_SNB_PKG_CST_CFG_CTL dump
MSR_NHM_SNB_PKG_CST_CFG_CTL: 0x1e008008 (...pkg-cstate-limit=0: unlimited)
should print as
MSR_NHM_SNB_PKG_CST_CFG_CTL: 0x1e008008 (...pkg-cstate-limit=8: unlimited)

Signed-off-by: Len Brown <len.brown@intel.com>
2016-03-13 04:22:47 -04:00
Len Brown
5aea2f7f64 tools/power turbostat: call __cpuid() instead of __get_cpuid()
turbostat already checks whether calling each cpuid leavf is legal,
and it doesn't look at the function return value,
so call the simpler gcc intrinsic __cpuid() instead of __get_cpuid().

syntax only, no functional change

Signed-off-by: Len Brown <len.brown@intel.com>
2016-03-13 03:55:42 -04:00
Len Brown
aa8d8cc79a tools/power turbostat: indicate SMX and SGX support
SGX presence is related to a SKL power workaround,
so lets show when that is enabled.

Signed-off-by: Len Brown <len.brown@intel.com>
2016-03-13 03:55:42 -04:00
Len Brown
0102b06747 tools/power turbostat: detect and work around syscall jitter
The accuracy of Bzy_Mhz and Busy% depend on reading
the TSC, APERF, and MPERF close together in time.

When there is a very short measurement interval,
or a large system is profoundly idle, the changes
in APERF and MPERF may be very small.
They can be small enough that an expensive interrupt
between reading APERF and MPERF can cause the APERF/MPERF
ratio to become inaccurate, resulting in invalid
calculation and display of Bzy_MHz.

A dummy APERF read of APERF makes this problem
much more rare.  Apparently this 1st systemn call
after exiting a long stretch of idle is when we
typically see expensive timer interrupts that cause
large jitter.

For the cases that dummy APERF read fails to prevent,
we compare the latency of the APERF and MPERF reads.
If they differ by more than 2x, we re-issue them.

Signed-off-by: Len Brown <len.brown@intel.com>
2016-03-13 03:55:41 -04:00
Len Brown
fdf676e51f tools/power turbostat: show GFX%rc6
The column "GFX%c6" show the percentage of time the GPU
is in the "render C6" state, rc6.  Deep package C-states on several
systems depend on the GPU being in RC6.

This information comes from the counter
/sys/class/drm/card0/power/rc6_residency_ms,
as read before and after the measurement interval.

Signed-off-by: Len Brown <len.brown@intel.com>
2016-03-13 03:55:41 -04:00
Len Brown
27d47356b6 tools/power turbostat: show GFXMHz
Under the column "GFXMHz", show a snapshot of this attribute:
/sys/class/graphics/fb0/device/drm/card0/gt_cur_freq_mhz

This is an instantaneous snapshot of what sysfs presents
at the end of the measurement interval.  turbostat does
not average or otherwise perform any math on this value.

Signed-off-by: Len Brown <len.brown@intel.com>
2016-03-13 03:55:40 -04:00
Len Brown
562a2d377b tools/power turbostat: show IRQs per CPU
The new IRQ column shows how many interrupts have occurred on each CPU
during the measurement inteval.  This information comes from
the difference between /proc/interrupts shapshots made before
and after the measurement interval.

The first row, the system summary, shows the sum of the IRQS
for all CPUs during that interval.

Signed-off-by: Len Brown <len.brown@intel.com>
2016-03-13 03:55:40 -04:00
Len Brown
36229897ba tools/power turbostat: make fewer systems calls
skip the open(2)/close(2) on each msr read
by keeping the /dev/cpu/*/msr files open.

The remaining read(2) is generally far fewer cycles
than the removed open(2) system call.

Signed-off-by: Len Brown <len.brown@intel.com>
2016-03-13 03:55:40 -04:00
Len Brown
58cc30a4e6 tools/power turbostat: fix compiler warnings
Signed-off-by: Len Brown <len.brown@intel.com>
2016-03-13 03:55:39 -04:00
Len Brown
b7d8c1483b tools/power turbostat: add --out option for saving output in a file
By default...

Turbostat --debug gconfiguration info goes to stderr.

In FORK mode, turbostat statistics go to stderr.

In PERIODIC mode, turbostat statistics go to stdout.

These defaults do not change, but an option "--out file"
will send all output above only to the specified file.

Signed-off-by: Len Brown <len.brown@intel.com>
2016-03-13 03:55:39 -04:00
Len Brown
75d2e44e60 tools/power turbostat: re-name "%Busy" field to "Busy%"
some tools processing turbostat output
have difficulty with items that begin with %...

Reported-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2016-03-13 03:55:38 -04:00
Hubert Chrzaniuk
cbf97abaf3 tools/power turbostat: Intel Xeon x200: fix turbo-ratio decoding
Following changes have been made:
- changed MSR_NHM_TURBO_RATIO_LIMIT to MSR_TURBO_RATIO_LIMIT in debug print
  for consistency with Developer Manual
- updated definition of bitfields in MSR_TURBO_RATIO_LIMIT and appropriate
  parsing code
- added x200 to list of architectures that do not support Nahlem compatible
  definition of MSR_TURBO_RATIO_LIMIT register (x200 has the register but
  bits definition is custom)
- fixed typo in code that parses MSR_TURBO_RATIO_LIMIT
  (logical instead of bitwise operator)
- changed MSR_TURBO_RATIO_LIMIT parsing algorithm so the print out had the
  same order as implementations for other platforms

Signed-off-by: Hubert Chrzaniuk <hubert.chrzaniuk@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2016-03-13 03:55:38 -04:00
Chrzaniuk, Hubert
121b48bb77 tools/power turbostat: Intel Xeon x200: fix erroneous bclk value
x200 does not enable any way to programmatically obtain bus clock
speed. Bclk for the architecture has a fixed value of 100 MHz.
At the same time x200 cannot be included in has_snb_msrs since
it does not support C7 idle state.

prior to this patch, MHz values reported on this chip
were erroneously calculated using bclk of 133MHz,
causing MHz values to be reported 33% higher than actual.

Signed-off-by: Hubert Chrzaniuk <hubert.chrzaniuk@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2016-03-13 03:55:37 -04:00
Len Brown
2a0609c02e tools/power turbostat: allow sub-sec intervals
turbostat -i interval_sec

will sample and display statistics every interval_sec.
interval_sec used to be a whole number of seconds,
but now we accept a decimal, as small as 0.001 sec (1 ms).

Signed-off-by: Len Brown <len.brown@intel.com>
2016-03-13 03:55:32 -04:00
Colin Ian King
1b69317d2d tools/power turbostat: fix various build warnings
When building with gcc 6 we're getting various build warnings that just
require some trivial function declaration and call fixes:

  turbostat.c: In function ‘dump_cstate_pstate_config_info’:
  turbostat.c:1973:1: warning: type of ‘family’ defaults to ‘int’
   dump_cstate_pstate_config_info(family, model)
  turbostat.c:1973:1: warning: type of ‘model’ defaults to ‘int’
  turbostat.c: In function ‘get_tdp’:
  turbostat.c:2145:8: warning: type of ‘model’ defaults to ‘int’
   double get_tdp(model)
  turbostat.c: In function ‘perf_limit_reasons_probe’:
  turbostat.c:2259:6: warning: type of ‘family’ defaults to ‘int’
   void perf_limit_reasons_probe(family, model)
  turbostat.c:2259:6: warning: type of ‘model’ defaults to ‘int’

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/n/tip-wbicer8n0s9qe6ql8h9x478e@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-03-03 11:10:39 -03:00
Len Brown
f0057310b4 tools/power turbostat: Decode MSR_MISC_PWR_MGMT
This MSR is helpful to show if P-state HW coordination
is enabled or disabled.

Signed-off-by: Len Brown <len.brown@intel.com>
2016-02-17 01:43:05 -05:00
Len Brown
7f5c258e1c tools/power turbostat: decode HWP registers
# turbostat --debug
...
CPUID(6): ... HWP, HWPnotify, HWPwindow, HWPepp, HWPpkg ...
...
cpu0: MSR_PM_ENABLE: 0x00000001 (HWP)
cpu0: MSR_HWP_CAPABILITIES: 0x01050916 (high 0x16 guar 0x9 eff 0x5 low 0x1)
cpu0: MSR_HWP_REQUEST: 0x80001604 (min 0x4 max 0x16 des 0x0 epp 0x80 window 0x0 pkg 0x0)
cpu0: MSR_HWP_INTERRUPT: 0x00000001 (EN_Guaranteed_Perf_Change, Dis_Excursion_Min)
cpu0: MSR_HWP_STATUS: 0x00000000 (No-Guaranteed_Perf_Change, No-Excursion_Min)

Signed-off-by: Len Brown <len.brown@intel.com>
2016-02-17 01:42:34 -05:00
Len Brown
61a87ba789 tools/power turbostat: CPUID(0x16) leaf shows base, max, and bus frequency
This CPUID leaf is available on Skylake:

CPUID(0x16): base_mhz: 1500 max_mhz: 2200 bus_mhz: 100

Signed-off-by: Len Brown <len.brown@intel.com>
2016-02-17 01:42:20 -05:00
Len Brown
69807a638f tools/power turbostat: decode more CPUID fields
for debugging, dump a few more fields:

CPUID(1): SSE3 MONITOR EIST TM2 TSC MSR ACPI-TM TM

cpu0: MSR_IA32_MISC_ENABLE: 0x00850089 (TCC EIST MONITOR)

Signed-off-by: Len Brown <len.brown@intel.com>
2016-02-17 01:41:53 -05:00
Rafael J. Wysocki
db2b52f752 Merge branch 'pm-tools'
* pm-tools:
  cpupower: Fix build error in cpufreq-info
2016-01-21 00:43:29 +01:00
Rafael J. Wysocki
a72aea722f Merge branches 'acpica', 'acpi-video' and 'acpi-fan'
* acpica:
  ACPICA: Update version to 20160108
  ACPICA: Silence a -Wbad-function-cast warning when acpi_uintptr_t is 'uintptr_t'
  ACPICA: Additional 2016 copyright changes
  ACPICA: Reduce regression fix divergence from upstream ACPICA

* acpi-video:
  ACPI / video: Add disable_backlight_sysfs_if quirk for the Toshiba Satellite R830
  ACPI / video: Revert "thinkpad_acpi: Use acpi_video_handles_brightness_key_presses()"
  ACPI / video: Document acpi_video_handles_brightness_key_presses() a bit
  ACPI / video: Fix using an uninitialized mutex / list_head in acpi_video_handles_brightness_key_presses()
  ACPI / video: Revert "ACPI / video: driver must be registered before checking for keypresses"
  ACPI / video: Add disable_backlight_sysfs_if quirk for the Toshiba Portege R700

* acpi-fan:
  ACPI / fan: Improve acpi_device_update_power error message
2016-01-21 00:41:59 +01:00
Shreyas B. Prabhu
38cb76a307 cpupower: Fix build error in cpufreq-info
Fix the following build error by including limits.h -

utils/cpufreq-info.c: In function ‘get_latency’:
utils/cpufreq-info.c:437:29: error: ‘UINT_MAX’ undeclared (first use in
this function)
  if (!latency || latency == UINT_MAX) {
                             ^
Signed-off-by: Shreyas B. Prabhu <shreyas@linux.vnet.ibm.com>
Fixes: e98f033f94 (cpupower: fix how "cpupower frequency-info" interprets latency)
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-01-19 01:17:23 +01:00
Bob Moore
c8100dc464 ACPICA: Additional 2016 copyright changes
All tool/utility signons.
Dual-license module header.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-01-15 22:18:09 +01:00
Rafael J. Wysocki
8f053a56df Merge branches 'pm-sleep' and 'pm-tools'
* pm-sleep:
  PM / sleep: Add support for read-only sysfs attributes

* pm-tools:
  cpupower: fix how "cpupower frequency-info" interprets latency
  cpupower: rework the "cpupower frequency-info" command
  cpupower: Do not analyse offlined cpus
  cpupower: Provide STATIC variable in Makefile for debug builds
  cpupower: Fix precedence issue
2016-01-12 01:12:03 +01:00
Bob Moore
5920380c67 ACPICA: getopt: Comment update, no functional change
ACPICA commit 0d784a90bc3aac75227c4459c3553de18b9ebe7a

Document one of the option string operators.

Link: https://github.com/acpica/acpica/commit/0d784a90
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-01-01 03:47:36 +01:00
Bob Moore
1fad87385e ACPICA: Core: Major update for code formatting, no functional changes
ACPICA commit dfa394471f6c01b2ee9433dbc143ec70cb9bca72

Mostly indentation inconsistencies across the code. Split
some long lines, etc.

Link: https://github.com/acpica/acpica/commit/dfa39447
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-01-01 03:36:53 +01:00
Lv Zheng
37645d6590 tools/power/acpi: Add userspace AML interface support
This patch adds a userspace tool to access Linux kernel AML debugger
interface.

Tow modes are supported by this tool:
1. Interactive: Users are able to launch a debugging shell to talk with
   in-kernel AML debugger.
   Note that it's user duty to ensure kernel runtime integrity by using
   this debugging tool:
   A. Some control methods evaluated by the users may result in kernel
      panics if those control methods shouldn't be evaluated by the OSPMs
      according to the current BIOS/OS configurations.
   B. Currently if a single stepping evaluation couldn't run to an end,
      then the synchronization primitives acquired by the evaluation may
      block normal OSPM control method evaluations.
2. Batch: Users are able to execute debugger commands in a script.
   Note that in addition to the above duties, it's user duty to ensure
   script runtime integrity by using this debugging tool in this mode:
   C. Currently only those commands that are not used for single stepping
      are suitable to be used in this mode.
   D. If the execution of the command may cause a failure that could result
      in an endless kernel execution, the execution of the script may also
      get blocked.
To exit the utility, currently "exit/quit" commands are recommended, but
ctrl-C" can also be used.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-12-15 00:17:44 +01:00
Jacob Tanenbaum
e98f033f94 cpupower: fix how "cpupower frequency-info" interprets latency
the intel-pstate driver does not support the ondemand governor and does not
have a valid value in
/sys/devices/system/cpu/cpu[x]/cpufreq/cpuinfo_transition_latency. The
intel-pstate driver sets cpuinfo_transition_latency to CPUFREQ_ETERNAL (-1),
the value written into cpuinfo_transition_latency is defind as an unsigned
int so checking the read value against max unsigned int will determine if the
value is valid.

Signed-off-by: Jacob Tanenbaum <jtanenba@redhat.com>
Signed-off-by: Thomas Renninger <trenn@suse.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-12-03 02:30:30 +01:00
Jacob Tanenbaum
562e5f1a35 cpupower: rework the "cpupower frequency-info" command
this patch makes two changes to the way that "cpupower
frequancy-info" operates

1. make it so that querying individual values always returns a
   message to the user

currently cpupower frequency info doesn't return anything to the user when
querying an individual value cannot be returned

[root@amd-dinar-09 cpupower]# cpupower -c 4 frequency-info -d
analyzing CPU 4:
[root@amd-dinar-09 cpupower]#

I added messages so that each query prints a message to the terminal

[root@amd-dinar-09 cpupower]# ./cpupower -c 4 frequency-info -d
analyzing CPU 4:
  no or unknown cpufreq driver is active on this CPU
[root@amd-dinar-09 cpupower]#

(this is just one example)

2. change debug_output_one() to use the functions already provided
   by cpufreq-info.c to query individual values of interest.

Signed-off-by: Jacob Tanenbaum <jtanenba@redhat.com>
Signed-off-by: Thomas Renninger <trenn@suse.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-12-03 02:30:30 +01:00
Thomas Renninger
ce512b8404 cpupower: Do not analyse offlined cpus
Use sysfs_is_cpu_online(cpu) instead of cpufreq_cpu_exists(cpu) to detect offlined cpus.

Re-arrange printfs slightly to have a consistent output even if you have multiple CPUs
as output and even if offlined cores are in between.

Signed-off-by: Thomas Renninger <trenn@suse.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-12-03 02:30:30 +01:00
Thomas Renninger
e51207f003 cpupower: Provide STATIC variable in Makefile for debug builds
When working on cpupower code, you often want to compile library code into the
binary.

This allows to execute modified cpupower code, even with library changes
without doing "make install"

Signed-off-by: Thomas Renninger <trenn@suse.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-12-03 02:30:30 +01:00
Thomas Renninger
7b0e1bf171 cpupower: Fix precedence issue
Signed-off-by: Thomas Renninger <trenn@suse.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-12-03 02:30:29 +01:00
Rafael J. Wysocki
d9f67dbc0f Merge branch 'pm-tools'
* pm-tools:
  x86: remove unused definition of MSR_NHM_PLATFORM_INFO
  tools/power turbostat: use new name for MSR_PLATFORM_INFO
2015-11-16 22:57:02 +01:00
Len Brown
ec0adc539b tools/power turbostat: use new name for MSR_PLATFORM_INFO
MSR_PLATFORM_INFO is the new name for MSR_NHM_PLATFORM_INFO

no functional change

Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-11-13 23:27:13 +01:00
Rafael J. Wysocki
f57ab32a84 Merge branch 'pm-tools'
* pm-tools:
  Creating a common structure initialization pattern for struct option
  cpupower: Enable disabled Cstates if they are below max latency
  cpupower: Remove debug message when using cpupower idle-set -D switch
  cpupower: cpupower monitor reports uninitialized values for offline cpus
  tools/power turbostat: bugfix: print MAX_NON_TURBO_RATIO
  tools/power turbostat: simplify Bzy_MHz calculation
2015-11-12 00:22:56 +01:00
Rafael J. Wysocki
89ba7d8c22 Merge branch 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux into pm-tools
Pull turbostat changes for v4.4 from Len Brown.

* 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
  tools/power turbostat: bugfix: print MAX_NON_TURBO_RATIO
  tools/power turbostat: simplify Bzy_MHz calculation
2015-11-11 00:01:21 +01:00
Sriram Raghunathan
57ab3b0872 Creating a common structure initialization pattern for struct option
This patch tries to creates a common structure initialization
within the cpupower tool.

Previously the ``struct option`` was initialized
using `designated initializer` technique which was
not needed. There were conflicting initialization methods seen with

bench/main.c & others.

Signed-off-by: Sriram Raghunathan <sriram@marirs.net.in>
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-11-02 02:28:59 +01:00
Thomas Renninger
19c9fb896f cpupower: Enable disabled Cstates if they are below max latency
cpupower idle-set -D <latency>
currently only disables all C-states that have a higher latency than the
specified <latency>. But if deep sleep states were already disabled and
have a lower latency, they should get enabled again.

For example:
This call:
cpupower idle-set -D 30
disables all C-states with a higher or equal latency than 30.
If one then calls:
cpupower idle-set -D 100
C-states with a latency between 30-99 will get enabled again with this patch
now. It is ensured that only C-states with a latency of 100 and higher are
disabled.

Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-11-02 02:28:59 +01:00
Thomas Renninger
645209472d cpupower: Remove debug message when using cpupower idle-set -D switch
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-11-02 02:28:59 +01:00
Jacob Tanenbaum
20102ac5be cpupower: cpupower monitor reports uninitialized values for offline cpus
[root@hp-dl980g7-02 linux]# cpupower monitor
...
5472|   0|   1|******|******|******|******|| 0.00|  0.00|  0.00|  0.00|  0.00 *is offline
10567|   0| 159|******|******|******|******||  0.00|  0.00|  0.00|  0.00|  0.00 *is offline
1661206560|859272560| 150|******|******|******|******|| 0.00|  0.00|  0.00|  0.00|  0.00 *is offline
1661206560|943093104| 140|******|******|******|******|| 0.00|  0.00|  0.00|  0.00|  0.00 *is offline

because of this cpupower also holds the incorrect value for the number
of physical packages in the machine

Changed cpupower to initialize the values of an offline cpu's socket and
core to -1, warn the user that one or more cpus is/are
offline and not print statistics for offline cpus.

This fix hides offlined cores where topology cannot be accessed.
With a recent kernel patch suggested from Prarit Bhargava it may be possible
that soft offlined cores' topology can still be parsed.
This patch would then show which cores in which package/socket are offline,
when sane toplogoy information is available.

Signed-off-by: Jacob Tanenbaum <jtanenba@redhat.com>
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-11-02 02:28:59 +01:00
Len Brown
759d2a932b tools/power turbostat: bugfix: print MAX_NON_TURBO_RATIO
MSR_TURBO_ACTIVATION_RATIO: 0x00000016 (MAX_NON_TURBO_RATIO=6 lock=0)
should print all 7 bits of MAX_NON_TURBO_RATIO (in decimal):
MSR_TURBO_ACTIVATION_RATIO: 0x00000016 (MAX_NON_TURBO_RATIO=22 lock=0)

Signed-off-by: Len Brown <len.brown@intel.com>
2015-10-22 02:42:12 -04:00
Bob Moore
842e71332e ACPICA: iASL: General cleanup of the file suffix #defines
ACPICA commit bed456ed2976bdaafdef406b982fdf6c539befc0

Removed some extraneous defines, reordered others.

Link: https://github.com/acpica/acpica/commit/bed456ed
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-10-22 02:01:12 +02:00
Len Brown
21ed5574d1 tools/power turbostat: simplify Bzy_MHz calculation
Bzy_MHz = TSC_delta*tsc_tweak/APERF_delta/MPERF_delta/measurement_interval

becomes

    Bzy_MHz = base_mhz/APERF_delta/MPERF_delta

on systems which support MSR_NHM_PLATFORM_INFO.

base_mhz is calculated directly from the base_ratio
reported in MSR_NHM_PLATFORM_INFO * bclk,
and bclk is discovered via MSR or cpuid.

This reduces the dependency of Bzy_MHz calculation on the TSC.
Previously, there were 4 TSC readings required in each caculation,
the raw TSC delta combined with the measurement_interval.
This also removes the "tsc_tweak" correction factor used when
TSC runs on a different base clock from the CPU's bclk.

After this change, tsc_tweak is used only for %Busy.

The end-result should be a Bzy_MHz result slightly less prone to jitter.

Signed-off-by: Len Brown <len.brown@intel.com>
2015-10-19 22:50:01 -04:00
Len Brown
af71b980c0 tools/power turbosat: update version number
Signed-off-by: Len Brown <len.brown@intel.com>
2015-09-26 09:49:55 -04:00
Len Brown
a2b7b74945 tools/power turbostat: SKL: Adjust for TSC difference from base frequency
On a Skylake with 1500MHz base frequency,
the TSC runs at 1512MHz.

This is because the TSC is no longer in the n*100 MHz BCLK domain,
but is now in the m*24MHz crystal clock domain. (24 MHz * 63 = 1512 MHz)

This adds error to several calculations in turbostat,
unless the TSC sample sizes are adjusted for this difference.

Note that calculations in the time domain are immune
from this issue, as the timing sub-system has already
calibrated the TSC against a known wall clock.

AVG_MHz = APERF_delta/measurement_interval

	need no adjustment.  APERF_delta is in the BCLK domain,
	and measurement_interval is in the time domain.

TSC_MHz  =  TSC_delta/measurement_interval

	needs no adjustment -- as we really do want to report
	the actual measured TSC delta here, and measurement_interval
	is in the accurate time domain.

%Busy = MPERF_delta/TSC_delta

	needs adjustment to use TSC_BCLK_DOMAIN_delta.
	TSC_BCLK_DOMAIN_delta = TSC_delta * base_hz / tsc_hz

Bzy_MHz = TSC_delta/APERF_delta/MPERF_delta/measurement_interval

	need adjustment as above.

No other metrics in turbostat need to be adjusted.

Before:

     CPU Avg_MHz   %Busy Bzy_MHz TSC_MHz
       -     550   24.84    2216    1512
       0    2191   98.73    2219    1514
       2       0    0.01    2130    1512
       1       9    0.43    2016    1512
       3       2    0.08    2016    1512

After:

     CPU Avg_MHz   %Busy Bzy_MHz TSC_MHz
       -     550   25.05    2198    1512
       0    2190   99.62    2199    1512
       2       0    0.01    2152    1512
       1       9    0.46    2000    1512
       3       2    0.10    2000    1512

Note that in this example, the "Before" Bzy_MHz
was reported as exceeding the 2200 max turbo rate.
Also, even a pinned spin loop would not be reported
as over 99% busy.

Signed-off-by: Len Brown <len.brown@intel.com>
2015-09-26 00:50:54 -04:00
Hubert Chrzaniuk
b2b34dfe4d tools/power turbostat: KNL workaround for %Busy and Avg_MHz
KNL increments APERF and MPERF every 1024 clocks.
This is compliant with the architecture specification,
which requires that only the ratio of APERF/MPERF need be valid.

However, turbostat takes advantage of the fact that these
two MSRs increment every un-halted clock
at the actual and base frequency:

AVG_MHz = APERF_delta/measurement_interval

%Busy = MPERF_delta/TSC_delta

This quirk is needed for these calculations to also work on KNL,
which would otherwise show a value 1024x smaller than expected.

Signed-off-by: Hubert Chrzaniuk <hubert.chrzaniuk@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2015-09-26 00:50:54 -04:00
Len Brown
756357b8e4 tools/power turbostat: IVB Xeon: fix --debug regression
Staring in Linux-4.3-rc1,
commit 6fb3143b56 ("tools/power turbostat: dump CONFIG_TDP")
touches MSR 0x648, which is not supported on IVB-Xeon.
This results in "turbostat --debug" exiting on those systems:

turbostat: /dev/cpu/2/msr offset 0x648 read failed: Input/output error

Remove IVB-Xeon from the list of machines supporting with that MSR.

Signed-off-by: Len Brown <len.brown@intel.com>
2015-09-26 00:50:48 -04:00
Linus Torvalds
ae98207309 Power management and ACPI material for v4.3-rc1
- ACPICA update to upstream revision 20150818 including method
    tracing extensions to allow more in-depth AML debugging in the
    kernel and a number of assorted fixes and cleanups (Bob Moore,
    Lv Zheng, Markus Elfring).
 
  - ACPI sysfs code updates and a documentation update related to
    AML method tracing (Lv Zheng).
 
  - ACPI EC driver fix related to serialized evaluations of _Qxx
    methods and ACPI tools updates allowing the EC userspace tool
    to be built from the kernel source (Lv Zheng).
 
  - ACPI processor driver updates preparing it for future
    introduction of CPPC support and ACPI PCC mailbox driver
    updates (Ashwin Chaugule).
 
  - ACPI interrupts enumeration fix for a regression related
    to the handling of IRQ attribute conflicts between MADT
    and the ACPI namespace (Jiang Liu).
 
  - Fixes related to ACPI device PM (Mika Westerberg, Srinidhi Kasagar).
 
  - ACPI device registration code reorganization to separate the
    sysfs-related code and bus type operations from the rest (Rafael
    J Wysocki).
 
  - Assorted cleanups in the ACPI core (Jarkko Nikula, Mathias Krause,
    Andy Shevchenko, Rafael J Wysocki, Nicolas Iooss).
 
  - ACPI cpufreq driver and ia64 cpufreq driver fixes and cleanups
    (Pan Xinhui, Rafael J Wysocki).
 
  - cpufreq core cleanups on top of the previous changes allowing it
    to preseve its sysfs directories over system suspend/resume (Viresh
    Kumar, Rafael J Wysocki, Sebastian Andrzej Siewior).
 
  - cpufreq fixes and cleanups related to governors (Viresh Kumar).
 
  - cpufreq updates (core and the cpufreq-dt driver) related to the
    turbo/boost mode support (Viresh Kumar, Bartlomiej Zolnierkiewicz).
 
  - New DT bindings for Operating Performance Points (OPP), support
    for them in the OPP framework and in the cpufreq-dt driver plus
    related OPP framework fixes and cleanups (Viresh Kumar).
 
  - cpufreq powernv driver updates (Shilpasri G Bhat).
 
  - New cpufreq driver for Mediatek MT8173 (Pi-Cheng Chen).
 
  - Assorted cpufreq driver (speedstep-lib, sfi, integrator) cleanups
    and fixes (Abhilash Jindal, Andrzej Hajda, Cristian Ardelean).
 
  - intel_pstate driver updates including Skylake-S support, support
    for enabling HW P-states per CPU and an additional vendor bypass
    list entry (Kristen Carlson Accardi, Chen Yu, Ethan Zhao).
 
  - cpuidle core fixes related to the handling of coupled idle states
    (Xunlei Pang).
 
  - intel_idle driver updates including Skylake Client support and
    support for freeze-mode-specific idle states (Len Brown).
 
  - Driver core updates related to power management (Andy Shevchenko,
    Rafael J Wysocki).
 
  - Generic power domains framework fixes and cleanups (Jon Hunter,
    Geert Uytterhoeven, Rajendra Nayak, Ulf Hansson).
 
  - Device PM QoS framework update to allow the latency tolerance
    setting to be exposed to user space via sysfs (Mika Westerberg).
 
  - devfreq support for PPMUv2 in Exynos5433 and a fix for an incorrect
    exynos-ppmu DT binding (Chanwoo Choi, Javier Martinez Canillas).
 
  - System sleep support updates (Alan Stern, Len Brown, SungEun Kim).
 
  - rockchip-io AVS support updates (Heiko Stuebner).
 
  - PM core clocks support fixup (Colin Ian King).
 
  - Power capping RAPL driver update including support for Skylake H/S
    and Broadwell-H (Radivoje Jovanovic, Seiichi Ikarashi).
 
  - Generic device properties framework fixes related to the handling
    of static (driver-provided) property sets (Andy Shevchenko).
 
  - turbostat and cpupower updates (Len Brown, Shilpasri G Bhat,
    Shreyas B Prabhu).
 
 /
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Merge tag 'pm+acpi-4.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management and ACPI updates from Rafael Wysocki:
 "From the number of commits perspective, the biggest items are ACPICA
  and cpufreq changes with the latter taking the lead (over 50 commits).

  On the cpufreq front, there are many cleanups and minor fixes in the
  core and governors, driver updates etc.  We also have a new cpufreq
  driver for Mediatek MT8173 chips.

  ACPICA mostly updates its debug infrastructure and adds a number of
  fixes and cleanups for a good measure.

  The Operating Performance Points (OPP) framework is updated with new
  DT bindings and support for them among other things.

  We have a few updates of the generic power domains framework and a
  reorganization of the ACPI device enumeration code and bus type
  operations.

  And a lot of fixes and cleanups all over.

  Included is one branch from the MFD tree as it contains some
  PM-related driver core and ACPI PM changes a few other commits are
  based on.

  Specifics:

   - ACPICA update to upstream revision 20150818 including method
     tracing extensions to allow more in-depth AML debugging in the
     kernel and a number of assorted fixes and cleanups (Bob Moore, Lv
     Zheng, Markus Elfring).

   - ACPI sysfs code updates and a documentation update related to AML
     method tracing (Lv Zheng).

   - ACPI EC driver fix related to serialized evaluations of _Qxx
     methods and ACPI tools updates allowing the EC userspace tool to be
     built from the kernel source (Lv Zheng).

   - ACPI processor driver updates preparing it for future introduction
     of CPPC support and ACPI PCC mailbox driver updates (Ashwin
     Chaugule).

   - ACPI interrupts enumeration fix for a regression related to the
     handling of IRQ attribute conflicts between MADT and the ACPI
     namespace (Jiang Liu).

   - Fixes related to ACPI device PM (Mika Westerberg, Srinidhi
     Kasagar).

   - ACPI device registration code reorganization to separate the
     sysfs-related code and bus type operations from the rest (Rafael J
     Wysocki).

   - Assorted cleanups in the ACPI core (Jarkko Nikula, Mathias Krause,
     Andy Shevchenko, Rafael J Wysocki, Nicolas Iooss).

   - ACPI cpufreq driver and ia64 cpufreq driver fixes and cleanups (Pan
     Xinhui, Rafael J Wysocki).

   - cpufreq core cleanups on top of the previous changes allowing it to
     preseve its sysfs directories over system suspend/resume (Viresh
     Kumar, Rafael J Wysocki, Sebastian Andrzej Siewior).

   - cpufreq fixes and cleanups related to governors (Viresh Kumar).

   - cpufreq updates (core and the cpufreq-dt driver) related to the
     turbo/boost mode support (Viresh Kumar, Bartlomiej Zolnierkiewicz).

   - New DT bindings for Operating Performance Points (OPP), support for
     them in the OPP framework and in the cpufreq-dt driver plus related
     OPP framework fixes and cleanups (Viresh Kumar).

   - cpufreq powernv driver updates (Shilpasri G Bhat).

   - New cpufreq driver for Mediatek MT8173 (Pi-Cheng Chen).

   - Assorted cpufreq driver (speedstep-lib, sfi, integrator) cleanups
     and fixes (Abhilash Jindal, Andrzej Hajda, Cristian Ardelean).

   - intel_pstate driver updates including Skylake-S support, support
     for enabling HW P-states per CPU and an additional vendor bypass
     list entry (Kristen Carlson Accardi, Chen Yu, Ethan Zhao).

   - cpuidle core fixes related to the handling of coupled idle states
     (Xunlei Pang).

   - intel_idle driver updates including Skylake Client support and
     support for freeze-mode-specific idle states (Len Brown).

   - Driver core updates related to power management (Andy Shevchenko,
     Rafael J Wysocki).

   - Generic power domains framework fixes and cleanups (Jon Hunter,
     Geert Uytterhoeven, Rajendra Nayak, Ulf Hansson).

   - Device PM QoS framework update to allow the latency tolerance
     setting to be exposed to user space via sysfs (Mika Westerberg).

   - devfreq support for PPMUv2 in Exynos5433 and a fix for an incorrect
     exynos-ppmu DT binding (Chanwoo Choi, Javier Martinez Canillas).

   - System sleep support updates (Alan Stern, Len Brown, SungEun Kim).

   - rockchip-io AVS support updates (Heiko Stuebner).

   - PM core clocks support fixup (Colin Ian King).

   - Power capping RAPL driver update including support for Skylake H/S
     and Broadwell-H (Radivoje Jovanovic, Seiichi Ikarashi).

   - Generic device properties framework fixes related to the handling
     of static (driver-provided) property sets (Andy Shevchenko).

   - turbostat and cpupower updates (Len Brown, Shilpasri G Bhat,
     Shreyas B Prabhu)"

* tag 'pm+acpi-4.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (180 commits)
  cpufreq: speedstep-lib: Use monotonic clock
  cpufreq: powernv: Increase the verbosity of OCC console messages
  cpufreq: sfi: use kmemdup rather than duplicating its implementation
  cpufreq: drop !cpufreq_driver check from cpufreq_parse_governor()
  cpufreq: rename cpufreq_real_policy as cpufreq_user_policy
  cpufreq: remove redundant 'policy' field from user_policy
  cpufreq: remove redundant 'governor' field from user_policy
  cpufreq: update user_policy.* on success
  cpufreq: use memcpy() to copy policy
  cpufreq: remove redundant CPUFREQ_INCOMPATIBLE notifier event
  cpufreq: mediatek: Add MT8173 cpufreq driver
  dt-bindings: mediatek: Add MT8173 CPU DVFS clock bindings
  PM / Domains: Fix typo in description of genpd_dev_pm_detach()
  PM / Domains: Remove unusable governor dummies
  PM / Domains: Make pm_genpd_init() available to modules
  PM / domains: Align column headers and data in pm_genpd_summary output
  powercap / RAPL: disable the 2nd power limit properly
  tools: cpupower: Fix error when running cpupower monitor
  PM / OPP: Drop unlikely before IS_ERR(_OR_NULL)
  PM / OPP: Fix static checker warning (broken 64bit big endian systems)
  ...
2015-09-01 19:45:46 -07:00
Rafael J. Wysocki
e625ccec1f Merge branches 'pm-tools' and 'powercap'
* pm-tools:
  tools: cpupower: Fix error when running cpupower monitor
  tools/power turbostat: fix typo on DRAM column in Joules-mode
  cpupower: Do not change the frequency of offline cpu
  tools/power turbostat: fix parameter passing for forked command
  tools/power turbostat: dump CONFIG_TDP
  tools/power turbostat: cpu0 is no longer hard-coded, so  update output
  tools/power turbostat: update turbostat(8)

* powercap:
  powercap / RAPL: disable the 2nd power limit properly
  powercap / RAPL: Add support for Broadwell-H
  powercap / RAPL: Add support for Skylake H/S
2015-09-01 15:54:30 +02:00
Shreyas B. Prabhu
404c2db635 tools: cpupower: Fix error when running cpupower monitor
get_cpu_topology() tries to get topology info from all cpus by reading
files in the topology sysfs dir. If a cpu is offlined, since it doesn't
have topology dir, this function fails and returns -1. This causes
functions relying on get_cpu_topology() to fail. For example-

$ cpupower monitor
Cannot read number of available processors

Fix this by skipping fetching topology info for offline cpus.

Signed-off-by: Shreyas B. Prabhu <shreyas@linux.vnet.ibm.com>
Reported-by: Pavaman Subramaniyam <pavsubra@linux.vnet.ibm.com>
Acked-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-08-29 01:38:16 +02:00
Rafael J. Wysocki
82bb70c599 Merge branch 'turbostat' of https://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux into pm-tools
Pull turbostat changes for v4.3 from Len Brown.

* 'turbostat' of https://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
  tools/power turbostat: fix typo on DRAM column in Joules-mode
  tools/power turbostat: fix parameter passing for forked command
  tools/power turbostat: dump CONFIG_TDP
  tools/power turbostat: cpu0 is no longer hard-coded, so  update output
  tools/power turbostat: update turbostat(8)
2015-08-24 23:10:02 +02:00
Lv Zheng
4305cd0243 tools/power/acpi: Enable build for EC userspace tool
This patch allows EC userspace tool to be built as an ACPI tool.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-07-31 23:39:31 +02:00
Lv Zheng
391fc234b5 tools/power/acpi: Add descend support in ACPI tools Makefile
This patch splits tools/power/acpi/Makefile to support descend compling for
ACPI tools. In this patch tools/ec related stuff is removed as it is
originally not enabled.

Also a missing .o (utnonansi.o) is added to the acpidump/Makefile.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-07-31 23:39:31 +02:00
Len Brown
bd6906ed3d tools/power turbostat: fix typo on DRAM column in Joules-mode
< RAM_W
> RAM_J

Reported-by: Hubert Chrzaniuk <hubert.chrzaniuk@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2015-07-24 10:35:23 -04:00
Shilpasri G Bhat
2e5e8fd1ff cpupower: Do not change the frequency of offline cpu
Check if the cpu is online before changing the frequency/governor of
the cpu.

Reported-by: Pavaman Subramaniyam <pavsubra@linux.vnet.ibm.com>
Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>
Reviewed-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Acked-by: Thomas Renninger <trenn@suse.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-07-23 20:40:51 +02:00
Len Brown
a01e72fbc4 tools/power turbostat: fix parameter passing for forked command
turbostat supports forked command when sampling cpu state. However,
the forked command is not allowed to be executed with options, otherwise
turbostat might regard these options as invalid turbostat options.

For example:

./turbostat stress -c 4 -t 10
./turbostat: unrecognized option '-t'

Reported-by: Chen Yu <yu.c.chen@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2015-07-15 21:49:41 -04:00
Andy Lutomirski
4ea1636b04 x86/asm/tsc: Rename native_read_tsc() to rdtsc()
Now that there is no paravirt TSC, the "native" is
inappropriate. The function does RDTSC, so give it the obvious
name: rdtsc().

Suggested-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Huang Rui <ray.huang@amd.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Len Brown <lenb@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: kvm ML <kvm@vger.kernel.org>
Link: http://lkml.kernel.org/r/fd43e16281991f096c1e4d21574d9e1402c62d39.1434501121.git.luto@kernel.org
[ Ported it to v4.2-rc1. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-07-06 15:23:28 +02:00
Andy Lutomirski
87be28aaf1 x86/asm/tsc: Replace rdtscll() with native_read_tsc()
Now that the ->read_tsc() paravirt hook is gone, rdtscll() is
just a wrapper around native_read_tsc(). Unwrap it.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Huang Rui <ray.huang@amd.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Len Brown <lenb@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: kvm ML <kvm@vger.kernel.org>
Link: http://lkml.kernel.org/r/d2449ae62c1b1fb90195bcfb19ef4a35883a04dc.1434501121.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-07-06 15:23:26 +02:00
Linus Torvalds
9bdc771f2c Additional ACPICA material for v4.2-rc1
- Fix system resume problems related to 32-bit and 64-bit versions
    of the Firmware ACPI Control Structure (FACS) in the firmare (Lv
    Zheng).
 
  - Fix double initialization of the FACS (Lv Zheng).
 
  - Add _CLS object processing code to ACPICA (Suravee Suthikulpanit).
 
  - Add support for the (currently missing) new GIC version field in
    the Multiple APIC Description Table (MADT) (Hanjun Guo).
 
  - Add support for overriding objects in the ACPI namespace to
    ACPICA and OSDT support (Lv Zheng, Bob Moore, Zhang Rui).
 
  - Updates related to the TCPA and TPM2 ACPI tables (Bob Moore).
 
  - Restore the commit modifying _REV to always return "2" (as
    required by ACPI 6) and add a blacklisting mechanism for
    systems that may be affected by that change (Rafael J Wysocki).
 
  - Assorted fixes and cleanups (Bob Moore, Lv Zheng, Sascha Wildner).
 
 /
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Merge tag 'acpica-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPICA updates from Rafael Wysocki:
 "Additional ACPICA material for v4.2-rc1

  This will update the ACPICA code in the kernel to upstream revision
  20150619 (a bug-fix release mostly including stable-candidate fixes)
  and restore an earlier ACPICA commit that had to be reverted due to a
  regression introduced by it (the regression is addressed by
  blacklisting the only known system affected by it to date).

  The only new feature added by this update is the support for
  overriding objects in the ACPI namespace and a new ACPI table that can
  be used for that called the Override System Definition Table (OSDT).
  That should allow us to "patch" the ACPI namespace built from
  incomplete or incorrect ACPI System Definition tables (DSDT, SSDT)
  during system startup without the need to provide replacements for all
  of those tables in the future.

  Specifics:

   - Fix system resume problems related to 32-bit and 64-bit versions of
     the Firmware ACPI Control Structure (FACS) in the firmare (Lv
     Zheng)

   - Fix double initialization of the FACS (Lv Zheng)

   - Add _CLS object processing code to ACPICA (Suravee Suthikulpanit)

   - Add support for the (currently missing) new GIC version field in
     the Multiple APIC Description Table (MADT) (Hanjun Guo)

   - Add support for overriding objects in the ACPI namespace to ACPICA
     and OSDT support (Lv Zheng, Bob Moore, Zhang Rui)

   - Updates related to the TCPA and TPM2 ACPI tables (Bob Moore)

   - Restore the commit modifying _REV to always return "2" (as required
     by ACPI 6) and add a blacklisting mechanism for systems that may be
     affected by that change (Rafael J Wysocki)

   - Assorted fixes and cleanups (Bob Moore, Lv Zheng, Sascha Wildner)"

* tag 'acpica-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (28 commits)
  Revert 'Revert "ACPICA: Permanently set _REV to the value '2'."'
  ACPI / init: Make it possible to override _REV
  ACPICA: Update version to 20150619
  ACPICA: Comment update, no functional change
  ACPICA: Update TPM2 ACPI table
  ACPICA: Update definitions for the TCPA and TPM2 ACPI tables
  ACPICA: Split C library prototypes to new header
  ACPICA: De-macroize calls to standard C library functions
  ACPI / acpidump: Update acpidump manual
  ACPICA: acpidump: Convert the default behavior to dump from /sys/firmware/acpi/tables
  ACPICA: acpidump: Allow customized tables to be dumped without accessing /dev/mem
  ACPICA: Cleanup output for the ASL Debug object
  ACPICA: Update for acpi_install_table memory types
  ACPICA: Namespace: Change namespace override to avoid node deletion
  ACPICA: Namespace: Add support of OSDT table
  ACPICA: Namespace: Add support to allow overriding objects
  ACPICA: ACPI 6.0: Add values for MADT GIC version field
  ACPICA: Utilities: Add _CLS processing
  ACPICA: Add dragon_fly support to unix file mapping file
  ACPICA: EFI: Add EFI interface definitions to eliminate dependency of GNU EFI
  ...
2015-07-02 17:11:28 -07:00
Bob Moore
4fa4616e27 ACPICA: De-macroize calls to standard C library functions
ACPICA commit 3b1026e0bdd3c32eb6d5d313f3ba0b1fee7597b4
ACPICA commit 00f0dc83f5cfca53b27a3213ae0d7719b88c2d6b
ACPICA commit 47d22a738d0e19fd241ffe4e3e9d4e198e4afc69

Across all of ACPICA. Replace C library macros such as ACPI_STRLEN with the
standard names such as strlen. The original purpose for these macros is
long since obsolete.
Also cast various invocations as necessary. Bob Moore, Jung-uk Kim, Lv Zheng.

Link: https://github.com/acpica/acpica/commit/3b1026e0
Link: https://github.com/acpica/acpica/commit/00f0dc83
Link: https://github.com/acpica/acpica/commit/47d22a73
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Jung-uk Kim <jkim@FreeBSD.org>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-07-01 23:17:55 +02:00
Lv Zheng
63c43812ee ACPI / acpidump: Update acpidump manual
This patch updates acpidump manual according to the recent changes.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-07-01 23:17:55 +02:00
Lv Zheng
4fb80c3769 ACPICA: acpidump: Convert the default behavior to dump from /sys/firmware/acpi/tables
ACPICA commit 04c3bd7e9d6aeb2b3edebe99c90dc271ae4e6353

In order to work without any additional option to dump tables when /dev/mem
doesn't exist, this patch switches the default behavior of acpidump to dump
from /sys/firmware/acpi/tables. Reported by Al Stone, Fixed by Lv Zheng.

Link: https://github.com/acpica/acpica/commit/04c3bd7e
Reported-by: Al Stone <ahs3@redhat.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-07-01 23:17:55 +02:00
Lv Zheng
428394dfdf ACPICA: acpidump: Allow customized tables to be dumped without accessing /dev/mem
ACPICA commit ab29013cfa2424140446aff196a70b211ab343a9

The /dev/mem can be configured out, in which case, acpidump should still
work with "-c" option as tables can be found in /sys/firmware/acpi/tables.
This patch allows acpidump to work without /dev/mem.
This patch has been tested with "acpidump -c" and "acpidump -c -n FADT".
And it worked as expected. Lv Zheng.

Link: https://github.com/acpica/acpica/commit/ab29013c
Reported-by: Al Stone <ahs3@redhat.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-07-01 23:17:55 +02:00
Sascha Wildner
cbc823405a ACPICA: Add dragon_fly support to unix file mapping file
ACPICA commit 795b215d6fd062386f0a1c23dff9ffa244683c4f

ACPICA BZ 1130

This patch doesn't affect Linux kernel.

Link: https://bugs.acpica.org/show_bug.cgi?id=1130
Link: https://github.com/acpica/acpica/commit/795b215d
Signed-off-by: Sascha Wildner <swildner@gmail.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-07-01 23:17:53 +02:00
Linus Torvalds
43c9fad942 Power management and ACPI material for v4.2-rc1
- ACPICA update to upstream revision 20150515 including basic
    support for ACPI 6 features: new ACPI tables introduced by
    ACPI 6 (STAO, XENV, WPBT, NFIT, IORT), changes related to the
    other tables (DTRM, FADT, LPIT, MADT), new predefined names
    (_BTH, _CR3, _DSD, _LPI, _MTL, _PRR, _RDI, _RST, _TFP, _TSN),
    fixes and cleanups (Bob Moore, Lv Zheng).
 
  - ACPI device power management core code update to follow ACPI 6
    which reflects the ACPI device power management implementation
    in Windows (Rafael J Wysocki).
 
  - Rework of the backlight interface selection logic to reduce the
    number of kernel command line options and improve the handling
    of DMI quirks that may be involved in that and to make the
    code generally more straightforward (Hans de Goede).
 
  - Fixes for the ACPI Embedded Controller (EC) driver related to
    the handling of EC transactions (Lv Zheng).
 
  - Fix for a regression related to the ACPI resources management
    and resulting from a recent change of ACPI initialization code
    ordering (Rafael J Wysocki).
 
  - Fix for a system initialization regression related to ACPI
    introduced during the 3.14 cycle and caused by running the
    code that switches the platform over to the ACPI mode too
    early in the initialization sequence (Rafael J Wysocki).
 
  - Support for the ACPI _CCA device configuration object related
    to DMA cache coherence (Suravee Suthikulpanit).
 
  - ACPI/APEI fixes and cleanups (Jiri Kosina, Borislav Petkov).
 
  - ACPI battery driver cleanups (Luis Henriques, Mathias Krause).
 
  - ACPI processor driver cleanups (Hanjun Guo).
 
  - Cleanups and documentation update related to the ACPI device
    properties interface based on _DSD (Rafael J Wysocki).
 
  - ACPI device power management fixes (Rafael J Wysocki).
 
  - Assorted cleanups related to ACPI (Dominik Brodowski. Fabian
    Frederick, Lorenzo Pieralisi, Mathias Krause, Rafael J Wysocki).
 
  - Fix for a long-standing issue causing General Protection Faults
    to be generated occasionally on return to user space after resume
    from ACPI-based suspend-to-RAM on 32-bit x86 (Ingo Molnar).
 
  - Fix to make the suspend core code return -EBUSY consistently in
    all cases when system suspend is aborted due to wakeup detection
    (Ruchi Kandoi).
 
  - Support for automated device wakeup IRQ handling allowing drivers
    to make their PM support more starightforward (Tony Lindgren).
 
  - New tracepoints for suspend-to-idle tracing and rework of the
    prepare/complete callbacks tracing in the PM core (Todd E Brandt,
    Rafael J Wysocki).
 
  - Wakeup sources framework enhancements (Jin Qian).
 
  - New macro for noirq system PM callbacks (Grygorii Strashko).
 
  - Assorted cleanups related to system suspend (Rafael J Wysocki).
 
  - cpuidle core cleanups to make the code more efficient (Rafael J
    Wysocki).
 
  - powernv/pseries cpuidle driver update (Shilpasri G Bhat).
 
  - cpufreq core fixes related to CPU online/offline that should
    reduce the overhead of these operations quite a bit, unless the
    CPU in question is physically going away (Viresh Kumar, Saravana
    Kannan).
 
  - Serialization of cpufreq governor callbacks to avoid race
    conditions in some cases (Viresh Kumar).
 
  - intel_pstate driver fixes and cleanups (Doug Smythies, Prarit
    Bhargava, Joe Konno).
 
  - cpufreq driver (arm_big_little, cpufreq-dt, qoriq) updates (Sudeep
    Holla, Felipe Balbi, Tang Yuantian).
 
  - Assorted cleanups in cpufreq drivers and core (Shailendra Verma,
    Fabian Frederick, Wang Long).
 
  - New Device Tree bindings for representing Operating Performance
    Points (Viresh Kumar).
 
  - Updates for the common clock operations support code in the PM
    core (Rajendra Nayak, Geert Uytterhoeven).
 
  - PM domains core code update (Geert Uytterhoeven).
 
  - Intel Knights Landing support for the RAPL (Running Average Power
    Limit) power capping driver (Dasaratharaman Chandramouli).
 
  - Fixes related to the floor frequency setting on Atom SoCs in the
    RAPL power capping driver (Ajay Thomas).
 
  - Runtime PM framework documentation update (Ben Dooks).
 
  - cpupower tool fix (Herton R Krzesinski).
 
 /
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Merge tag 'pm+acpi-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management and ACPI updates from Rafael Wysocki:
 "The rework of backlight interface selection API from Hans de Goede
  stands out from the number of commits and the number of affected
  places perspective.  The cpufreq core fixes from Viresh Kumar are
  quite significant too as far as the number of commits goes and because
  they should reduce CPU online/offline overhead quite a bit in the
  majority of cases.

  From the new featues point of view, the ACPICA update (to upstream
  revision 20150515) adding support for new ACPI 6 material to ACPICA is
  the one that matters the most as some new significant features will be
  based on it going forward.  Also included is an update of the ACPI
  device power management core to follow ACPI 6 (which in turn reflects
  the Windows' device PM implementation), a PM core extension to support
  wakeup interrupts in a more generic way and support for the ACPI _CCA
  device configuration object.

  The rest is mostly fixes and cleanups all over and some documentation
  updates, including new DT bindings for Operating Performance Points.

  There is one fix for a regression introduced in the 4.1 cycle, but it
  adds quite a number of lines of code, it wasn't really ready before
  Thursday and you were on vacation, so I refrained from pushing it on
  the last minute for 4.1.

  Specifics:

   - ACPICA update to upstream revision 20150515 including basic support
     for ACPI 6 features: new ACPI tables introduced by ACPI 6 (STAO,
     XENV, WPBT, NFIT, IORT), changes related to the other tables (DTRM,
     FADT, LPIT, MADT), new predefined names (_BTH, _CR3, _DSD, _LPI,
     _MTL, _PRR, _RDI, _RST, _TFP, _TSN), fixes and cleanups (Bob Moore,
     Lv Zheng).

   - ACPI device power management core code update to follow ACPI 6
     which reflects the ACPI device power management implementation in
     Windows (Rafael J Wysocki).

   - rework of the backlight interface selection logic to reduce the
     number of kernel command line options and improve the handling of
     DMI quirks that may be involved in that and to make the code
     generally more straightforward (Hans de Goede).

   - fixes for the ACPI Embedded Controller (EC) driver related to the
     handling of EC transactions (Lv Zheng).

   - fix for a regression related to the ACPI resources management and
     resulting from a recent change of ACPI initialization code ordering
     (Rafael J Wysocki).

   - fix for a system initialization regression related to ACPI
     introduced during the 3.14 cycle and caused by running the code
     that switches the platform over to the ACPI mode too early in the
     initialization sequence (Rafael J Wysocki).

   - support for the ACPI _CCA device configuration object related to
     DMA cache coherence (Suravee Suthikulpanit).

   - ACPI/APEI fixes and cleanups (Jiri Kosina, Borislav Petkov).

   - ACPI battery driver cleanups (Luis Henriques, Mathias Krause).

   - ACPI processor driver cleanups (Hanjun Guo).

   - cleanups and documentation update related to the ACPI device
     properties interface based on _DSD (Rafael J Wysocki).

   - ACPI device power management fixes (Rafael J Wysocki).

   - assorted cleanups related to ACPI (Dominik Brodowski, Fabian
     Frederick, Lorenzo Pieralisi, Mathias Krause, Rafael J Wysocki).

   - fix for a long-standing issue causing General Protection Faults to
     be generated occasionally on return to user space after resume from
     ACPI-based suspend-to-RAM on 32-bit x86 (Ingo Molnar).

   - fix to make the suspend core code return -EBUSY consistently in all
     cases when system suspend is aborted due to wakeup detection (Ruchi
     Kandoi).

   - support for automated device wakeup IRQ handling allowing drivers
     to make their PM support more starightforward (Tony Lindgren).

   - new tracepoints for suspend-to-idle tracing and rework of the
     prepare/complete callbacks tracing in the PM core (Todd E Brandt,
     Rafael J Wysocki).

   - wakeup sources framework enhancements (Jin Qian).

   - new macro for noirq system PM callbacks (Grygorii Strashko).

   - assorted cleanups related to system suspend (Rafael J Wysocki).

   - cpuidle core cleanups to make the code more efficient (Rafael J
     Wysocki).

   - powernv/pseries cpuidle driver update (Shilpasri G Bhat).

   - cpufreq core fixes related to CPU online/offline that should reduce
     the overhead of these operations quite a bit, unless the CPU in
     question is physically going away (Viresh Kumar, Saravana Kannan).

   - serialization of cpufreq governor callbacks to avoid race
     conditions in some cases (Viresh Kumar).

   - intel_pstate driver fixes and cleanups (Doug Smythies, Prarit
     Bhargava, Joe Konno).

   - cpufreq driver (arm_big_little, cpufreq-dt, qoriq) updates (Sudeep
     Holla, Felipe Balbi, Tang Yuantian).

   - assorted cleanups in cpufreq drivers and core (Shailendra Verma,
     Fabian Frederick, Wang Long).

   - new Device Tree bindings for representing Operating Performance
     Points (Viresh Kumar).

   - updates for the common clock operations support code in the PM core
     (Rajendra Nayak, Geert Uytterhoeven).

   - PM domains core code update (Geert Uytterhoeven).

   - Intel Knights Landing support for the RAPL (Running Average Power
     Limit) power capping driver (Dasaratharaman Chandramouli).

   - fixes related to the floor frequency setting on Atom SoCs in the
     RAPL power capping driver (Ajay Thomas).

   - runtime PM framework documentation update (Ben Dooks).

   - cpupower tool fix (Herton R Krzesinski)"

* tag 'pm+acpi-4.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (194 commits)
  cpuidle: powernv/pseries: Auto-promotion of snooze to deeper idle state
  x86: Load __USER_DS into DS/ES after resume
  PM / OPP: Add binding for 'opp-suspend'
  PM / OPP: Allow multiple OPP tables to be passed via DT
  PM / OPP: Add new bindings to address shortcomings of existing bindings
  ACPI: Constify ACPI device IDs in documentation
  ACPI / enumeration: Document the rules regarding the PRP0001 device ID
  ACPI / video: Make acpi_video_unregister_backlight() private
  acpi-video-detect: Remove old API
  toshiba-acpi: Port to new backlight interface selection API
  thinkpad-acpi: Port to new backlight interface selection API
  sony-laptop: Port to new backlight interface selection API
  samsung-laptop: Port to new backlight interface selection API
  msi-wmi: Port to new backlight interface selection API
  msi-laptop: Port to new backlight interface selection API
  intel-oaktrail: Port to new backlight interface selection API
  ideapad-laptop: Port to new backlight interface selection API
  fujitsu-laptop: Port to new backlight interface selection API
  eeepc-laptop: Port to new backlight interface selection API
  dell-wmi: Port to new backlight interface selection API
  ...
2015-06-23 14:18:07 -07:00
Rafael J. Wysocki
a8269d36a8 Merge branches 'pnp' and 'pm-tools'
* pnp:
  PNP / ACPI: use unsigned int in pnpacpi_encode_resources()
  PNP / ACPI: use u8 instead of int in acpi_resource_extended_irq context

* pm-tools:
  cpupower: mperf monitor: fix output in MAX_FREQ_SYSFS mode
2015-06-19 01:18:43 +02:00
Len Brown
6fb3143b56 tools/power turbostat: dump CONFIG_TDP
Config TDP is a feature that allows parts to be configured
for different thermal limits after they have left the factory.

This can have an effect on the operation of the part,
particularly in determiniing...

Max Non-turbo Ratio
Turbo Activation Ratio

Signed-off-by: Len Brown <len.brown@intel.com>
2015-06-17 16:23:45 -04:00
Len Brown
bfae205226 tools/power turbostat: cpu0 is no longer hard-coded, so update output
The --debug option reads a number of per-package MSRs.
Previously we explicitly read them on cpu0, but recently
turbostat changed to read them on the current "base_cpu".

Update the print-out to reflect base_cpu, rather than
the hard-coded cpu0.

Signed-off-by: Len Brown <len.brown@intel.com>
2015-06-17 12:27:21 -04:00
Borislav Petkov
b72e7464e4 x86/uapi: Do not export <asm/msr-index.h> as part of the user API headers
This header containing all MSRs and respective bit definitions
got exported to userspace in conjunction with the big UAPI
shuffle.

But, it doesn't belong in the UAPI headers because userspace can
do its own MSR defines and exporting them from the kernel blocks
us from doing cleanups/renames in that header. Which is
ridiculous - it is not kernel's job to export such a header and
keep MSRs list and their names stable.

Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1433436928-31903-19-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-06-07 15:36:04 +02:00
Len Brown
75fd7ffa7f tools/power turbostat: update turbostat(8)
Remove reference to the original Nehalem Turbo white paper,
since it has moved, and these mechanisms have now long since
been documented in the Software Developer's Manual.

Reported-by: Jeremie Lagraviere <jeremie@simula.no>
Signed-off-by: Len Brown <len.brown@intel.com>
2015-06-03 07:37:24 -04:00
Herton R. Krzesinski
47b98c74fa cpupower: mperf monitor: fix output in MAX_FREQ_SYSFS mode
There is clearly wrong output when mperf monitor runs in MAX_FREQ_SYSFS mode:
average frequency shows in kHz unit (despite the intended output to be in MHz),
and percentages for C state information are all wrong (including high/negative
values shown).

The problem is that the max_frequency read on initialization isn't used where it
should have been used on mperf_get_count_percent (to estimate the number of
ticks in the given time period), and the value we read from sysfs is in kHz, so
we must divide it to get the MHz value to use in current calculations.

While at it, also I fixed another small issues in the debug output of
max_frequency value in mperf_get_count_freq.

Signed-off-by: Herton R. Krzesinski <herton@redhat.com>
Acked-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-05-30 02:21:31 +02:00
Len Brown
a68c7c3ff0 tools/power turbostat: update version number to 4.7
Signed-off-by: Len Brown <len.brown@intel.com>
2015-05-27 18:04:01 -04:00
Prarit Bhargava
7ce7d5de6d tools/power turbostat: allow running without cpu0
Linux-3.7 added CONFIG_BOOTPARAM_HOTPLUG_CPU0,
allowing systems to offline cpu0.

But when cpu0 is offline, turbostat will not run:

 # turbostat ls
turbostat: no /dev/cpu/0/msr

This patch replaces the hard-coded use of cpu0 in turbostat
with the current cpu, allowing it to run without a cpu0.

Fewer cross-calls may also be needed due to use of current cpu,
though this hard-coding was used only for the --debug preamble.

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2015-05-27 18:04:01 -04:00
Len Brown
e9be7dd628 tools/power turbostat: correctly decode of ENERGY_PERFORMANCE_BIAS
When EPB is 0xF, turbosat was incorrectly describing it as "custom"
instead of calling it "powersave":

< cpu0: MSR_IA32_ENERGY_PERF_BIAS: 0x0000000f (custom)
> cpu0: MSR_IA32_ENERGY_PERF_BIAS: 0x0000000f (powersave)

Signed-off-by: Len Brown <len.brown@intel.com>
2015-05-27 18:04:00 -04:00
Dasaratharaman Chandramouli
fb5d432722 tools/power turbostat: enable turbostat to support Knights Landing (KNL)
Changes mainly to account for minor differences in Knights Landing(KNL):
1. KNL supports C1 and C6 core states.
2. KNL supports PC2, PC3 and PC6 package states.
3. KNL has a different encoding of the TURBO_RATIO_LIMIT MSR

Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2015-05-27 18:03:57 -04:00
Dasaratharaman Chandramouli
e275b3885d tools/power turbostat: correctly display more than 2 threads/core
Without this update, turbostat displays only 2 threads per core.
Some processors, such as Xeon Phi, have more.

Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2015-05-27 17:26:42 -04:00
Linus Torvalds
c8b3fd0ce3 More power management and ACPI updates for v4.1-rc1
- Fix a build warning in the intel_pstate driver showing up in non-SMP
    builds (Borislav Petkov).
 
  - Change one of the intel_pstate's P-state selection parameters for
    Baytrail and Cherrytrail CPUs to significantly improve performance
    at the cost of a small increase in energy consumption (Kristen
    Carlson Accardi).
 
  - Fix a NULL pointer dereference in the ACPI EC driver due to an unsafe
    list walk in the query handler removal routine (Chris Bainbridge).
 
  - Get rid of a false-positive lockdep warning in the ACPI container
    hot-remove code (Rafael J Wysocki).
 
  - Prevent the ACPI device enumeration code from creating device
    objects of a wrong type in some cases (Rafael J Wysocki).
 
  - Add Skylake processors support to the Intel RAPL power capping
    driver (Brian Bian).
 
  - Drop the stale MAINTAINERS entry for the ACPI dock driver that is
    regarded as part of the ACPI core and maintained along with it now
    (Chao Yu).
 
  - Fix cpupower tool breakage caused by a library API change in libpci
    3.3.0 (Lucas Stach).
 
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Merge tag 'pm+acpi-4.1-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull more power management and ACPI updates from Rafael Wysocki:
 "These are fixes mostly (intel_pstate, ACPI core, ACPI EC driver,
  cpupower tool), a new CPU ID for the Intel RAPL driver and one
  intel_pstate driver improvement that didn't make it to my previous
  pull requests due to timing.

  Specifics:

   - Fix a build warning in the intel_pstate driver showing up in
     non-SMP builds (Borislav Petkov)

   - Change one of the intel_pstate's P-state selection parameters for
     Baytrail and Cherrytrail CPUs to significantly improve performance
     at the cost of a small increase in energy consumption (Kristen
     Carlson Accardi)

   - Fix a NULL pointer dereference in the ACPI EC driver due to an
     unsafe list walk in the query handler removal routine (Chris
     Bainbridge)

   - Get rid of a false-positive lockdep warning in the ACPI container
     hot-remove code (Rafael J Wysocki)

   - Prevent the ACPI device enumeration code from creating device
     objects of a wrong type in some cases (Rafael J Wysocki)

   - Add Skylake processors support to the Intel RAPL power capping
     driver (Brian Bian)

   - Drop the stale MAINTAINERS entry for the ACPI dock driver that is
     regarded as part of the ACPI core and maintained along with it now
     (Chao Yu)

   - Fix cpupower tool breakage caused by a library API change in libpci
     3.3.0 (Lucas Stach)"

* tag 'pm+acpi-4.1-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / scan: Add a scan handler for PRP0001
  ACPI / scan: Annotate physical_node_lock in acpi_scan_is_offline()
  ACPI / EC: fix NULL pointer dereference in acpi_ec_remove_query_handler()
  MAINTAINERS: remove maintainship entry of docking station driver
  powercap / RAPL: Add support for Intel Skylake processors
  cpufreq: intel_pstate: Fix an annoying !CONFIG_SMP warning
  intel_pstate: Change the setpoint for Atom params
  cpupower: fix breakage from libpci API change
2015-04-26 13:56:35 -07:00
Linus Torvalds
09d51602cf Merge branch 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
Pull turbostat update from Len Brown:
 "Updates to the turbostat utility.

  Just one kernel dependency in this batch -- added a #define to
  msr-index.h"

* 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
  tools/power turbostat: correct dumped pkg-cstate-limit value
  tools/power turbostat: calculate TSC frequency from CPUID(0x15) on SKL
  tools/power turbostat: correct DRAM RAPL units on recent Xeon processors
  tools/power turbostat: Initial Skylake support
  tools/power turbostat: Use $(CURDIR) instead of $(PWD) and add support for O= option in Makefile
  tools/power turbostat: modprobe msr, if needed
  tools/power turbostat: dump MSR_TURBO_RATIO_LIMIT2
  tools/power turbostat: use new MSR_TURBO_RATIO_LIMIT names
  x86 msr-index: define MSR_TURBO_RATIO_LIMIT,1,2
  tools/power turbostat: label base frequency
  tools/power turbostat: update PERF_LIMIT_REASONS decoding
  tools/power turbostat: simplify default output
2015-04-19 14:31:41 -07:00
Rafael J. Wysocki
2363ccb505 Merge branches 'pm-cpufreq', 'powercap' and 'pm-tools'
* pm-cpufreq:
  cpufreq: intel_pstate: Fix an annoying !CONFIG_SMP warning
  intel_pstate: Change the setpoint for Atom params

* powercap:
  powercap / RAPL: Add support for Intel Skylake processors

* pm-tools:
  cpupower: fix breakage from libpci API change
2015-04-19 21:19:27 +02:00
Len Brown
e9257f5fa4 tools/power turbostat: correct dumped pkg-cstate-limit value
HSW expanded MSR_PKG_CST_CONFIG_CONTROL.Package-C-State-Limit,
from bits[2:0] used by previous implementations, to [3:0].
The value 1000b is unlimited, and is used by BDW and SKL too.

Signed-off-by: Len Brown <len.brown@intel.com>
2015-04-18 14:20:52 -04:00
Len Brown
8a5bdf41d2 tools/power turbostat: calculate TSC frequency from CPUID(0x15) on SKL
turbostat --debug
...
CPUID(0x15): eax_crystal: 2 ebx_tsc: 100 ecx_crystal_hz: 0
TSC: 1200 MHz (24000000 Hz * 100 / 2 / 1000000)

Signed-off-by: Len Brown <len.brown@intel.com>
2015-04-18 14:20:52 -04:00
Andrey Semin
40ee8e3b9d tools/power turbostat: correct DRAM RAPL units on recent Xeon processors
While not yet documented in the Software Developer's Manual,
the data-sheet for modern Xeon states that DRAM RAPL ENERGY units
are fixed at 15.3 uJ, rather than being discovered via MSR.

Before this patch, DRAM energy on these products is over-stated by turbostat
because the RAPL units are 4x larger.

ref: "Xeon E5-2600 v3/E5-1600 v3 Datasheet Volume 2"
http://www.intel.com/content/dam/www/public/us/en/documents/datasheets/xeon-e5-v3-datasheet-vol-2.pdf

Signed-off-by: Andrey Semin <andrey.semin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2015-04-18 14:20:52 -04:00
Len Brown
0b2bb6925e tools/power turbostat: Initial Skylake support
Skylake adds some additional residency counters.

Skylake supports a different mix of RAPL registers
from any previous product.

In most other ways, Skylake is like Broadwell.

Signed-off-by: Len Brown <len.brown@intel.com>
2015-04-18 14:20:51 -04:00
Thomas D
f82263c698 tools/power turbostat: Use $(CURDIR) instead of $(PWD) and add support for O= option in Makefile
Since commit ee0778a301
("tools/power: turbostat: make Makefile a bit more capable")
turbostat's Makefile is using

  [...]
  BUILD_OUTPUT    := $(PWD)
  [...]

which obviously causes trouble when building "turbostat" with

  make -C /usr/src/linux/tools/power/x86/turbostat ARCH=x86 turbostat

because GNU make does not update nor guarantee that $PWD is set.

This patch changes the Makefile to use $CURDIR instead, which GNU make
guarantees to set and update (i.e. when using "make -C ...") and also
adds support for the O= option (see "make help" in your root of your
kernel source tree for more details).

Link: https://bugs.gentoo.org/show_bug.cgi?id=533918
Fixes: ee0778a301 ("tools/power: turbostat: make Makefile a bit more capable")
Signed-off-by: Thomas D. <whissi@whissi.de>
Cc: Mark Asselstine <mark.asselstine@windriver.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2015-04-18 14:20:51 -04:00
Len Brown
a21d38c846 tools/power turbostat: modprobe msr, if needed
Some distros (Ubuntu) ship the msr driver as a module.
If turbosat is run as root on those systems, and discovers
that there is no /dev/cpu/cpu0/msr, it will now "modprobe msr"
for the user.

If not root, the modprobe attempt will fail, and turbostat will exit as before:

turbostat: no /dev/cpu/0/msr, Try "# modprobe msr" : No such file or directory

Signed-off-by: Len Brown <len.brown@intel.com>
2015-04-18 14:20:51 -04:00
Len Brown
fcd17211bd tools/power turbostat: dump MSR_TURBO_RATIO_LIMIT2
and up to 18 cores of turbo ratio limit
when using the turbostat --debug option.

Signed-off-by: Len Brown <len.brown@intel.com>
2015-04-18 14:20:50 -04:00
Len Brown
12bb43c615 tools/power turbostat: use new MSR_TURBO_RATIO_LIMIT names
s/MSR_NHM_TURBO_RATIO_LIMIT/MSR_TURBO_RATIO_LIMIT/
s/MSR_IVT_TURBO_RATIO_LIMIT/MSR_TURBO_RATIO_LIMIT1/

syntax only -- use the documented strings describing these registers.

Signed-off-by: Len Brown <len.brown@intel.com>
2015-04-18 14:20:50 -04:00
Lucas Stach
06b230e3dd cpupower: fix breakage from libpci API change
libpci 3.3.0 introduced an additional member in the pci_filter struct
which needs to be initialized to -1 to get the same behavior as before
the API change. The libpci internal helpers got updated accordingly,
but as the cpupower pci helpers initialized the struct themselves the
behavior changed.

Use the libpci helper pci_filter_init() to fix this and guard against
similar breakages in the future.

This fixes probing of the AMD fam12h/14h cpuidle monitor on systems
with libpci >= 3.3.0.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Acked-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-04-15 21:54:26 +02:00
Bob Moore
81ed793d30 ACPICA: Fix a sscanf format string.
ACPICA commit 84f3569db7accc576ace2dae81d101467254fe9d

Was using %d instead of properly using %u.

This patch only affects acpidump tool.

Link: https://github.com/acpica/acpica/commit/84f3569d
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-04-14 14:51:53 +02:00
Lv Zheng
e0423edff1 ACPICA: Unix: Cleanup to use ACPI_TO_INTEGER() to calc page offset.
ACPICA commit 9e2d8180f4d5e61949b17513bae8aff6412f62dd

The offset calculation needn't convert a pointer to a special integer type.
So this patch uses ACPI_TO_INTEGER() instead.

This patch only affects acpidump tool.

Link: https://github.com/acpica/acpica/commit/9e2d8180
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-04-14 14:51:50 +02:00
Len Brown
8f61f3598d tools/power turbostat: label base frequency
syntax only.

The cool kids are now using the phrase "base frequency",
where in the past we used "max non-turbo frequency" or "TSC frequency".

This distinction becomes important when a processor has a TSC
that runs at a different speed than the "base frequency".

Signed-off-by: Len Brown <len.brown@intel.com>
2015-04-13 15:52:54 -04:00
Len Brown
e33cbe852d tools/power turbostat: update PERF_LIMIT_REASONS decoding
cosmetic only.

order the decoding of MSR_PERF_LIMIT_REASONS bits
from MSB to LSB -- which you notice when more than 1 bit is set
and you are, say, comparing the output to the documentation...

Signed-off-by: Len Brown <len.brown@intel.com>
2015-04-13 15:52:54 -04:00
Len Brown
1cc21f7b6b tools/power turbostat: simplify default output
Casual turbostat users generally just want to know MHz.
So by default, just print enough information to make sense of MHz.

All the other configuration data and columns for C-states and temperature etc,
are printed with the --debug option.

Signed-off-by: Len Brown <len.brown@intel.com>
2015-04-13 15:52:54 -04:00
Josh Boyer
b8ea351b0e Revert "cpupower Makefile change to help run the tool without 'make install'"
This reverts commit 5c1de006e8.

While the original commit makes it easier to run cpupower from the
local build directory, it also leaves the binary with a rather poor
rpath of './' in it after it is installed on a system via 'make install'.

This is considered bad practice and can cause cpupower to fail in
rpmbuild with the following error:

ERROR   0004: file '/usr/bin/cpupower' contains an insecure rpath './' in [./]
error: Bad exit status from /var/tmp/rpm-tmp.A6u26r (%install)
    Bad exit status from /var/tmp/rpm-tmp.A6u26r (%install)

Developers should be able to use LD_LIBRARY_PATH to achieve the same
effect and not introduce rpath into the binary.

Signed-off-by: Josh Boyer <jwboyer@feoraproject.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-03-11 21:56:49 +01:00
Rafael J. Wysocki
c7fb90dfbe Merge branches 'pm-cpufreq', 'pm-cpuidle', 'pm-devfreq', 'pm-opp' and 'pm-tools'
* pm-cpufreq:
  cpufreq: speedstep-smi: enable interrupts when waiting

* pm-cpuidle:
  intel_idle: support additional Broadwell model

* pm-devfreq:
  PM / devfreq: event: testing the wrong variable

* pm-opp:
  PM / OPP / clk: Remove unnecessary OOM message

* pm-tools:
  tools/power turbostat: support additional Broadwell model
  tools/power turbostat: update parameters, documentation
  tools/power turbostat: Skip printing disabled package C-states
2015-02-13 21:39:06 +01:00
Rafael J. Wysocki
79b56ab8c3 Merge branch 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux into pm-tools
Pull additional turbostat updates for v3.20 from Len Brown.

* 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
  tools/power turbostat: support additional Broadwell model
  tools/power turbostat: update parameters, documentation
  tools/power turbostat: Skip printing disabled package C-states
2015-02-12 02:09:10 +01:00
Len Brown
48a0631c89 tools/power turbostat: support additional Broadwell model
Signed-off-by: Len Brown <len.brown@intel.com>
2015-02-10 15:59:53 -05:00
Rafael J. Wysocki
b5e82233ca Merge branch 'pm-tools'
* pm-tools:
  tools/power turbostat: relax dependency on APERF_MSR
  tools/power turbostat: relax dependency on invariant TSC
  tools/power turbostat: decode MSR_*_PERF_LIMIT_REASONS
  tools/power turbostat: relax dependency on root permission
  cpupower Makefile change to help run the tool without 'make install'
2015-02-10 16:11:26 +01:00
Len Brown
d8af6f5f0f tools/power turbostat: update parameters, documentation
Long format options added, though the short ones should still work.
eg. the new "--Counter 0x10" is the same as the old "-C 0x10"

Note this Incompatibility:
Old:
-v displayed verbose debug output

New:
-v and --version simpaly display version

Additional parameters:
-d and --debug display verbose debug output
-h and --help display a help message

Updated turbosat.8 man page accordingly.

Signed-off-by: Len Brown <len.brown@intel.com>
2015-02-10 01:56:38 -05:00
Len Brown
ee7e38e3d8 tools/power turbostat: Skip printing disabled package C-states
Replaced previously open-coded Package C-state Limit decoding
with table-driven decoding.  In doing so, updated to match January 2015
"Intel(R) 64 and IA-23 Architectures Software Developer's Manual".

In the past, turbostat would print package C-state residency columns
for all package states supported by the model's architecture, even though
a particular SKU may not support them, or they may be disabled by the BIOS.
Now turbostat will skip printing colunns if MSRs indicate that they are not enabled.
eg. many SKUs don't support PC7, and so that column will no longer be printed.

Signed-off-by: Len Brown <len.brown@intel.com>
2015-02-09 23:39:45 -05:00
Rafael J. Wysocki
994b7f10b0 Merge branch 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux into pm-tools
Pull turbostate changes for v3.20 from Len Brown.

* 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
  tools/power turbostat: relax dependency on APERF_MSR
  tools/power turbostat: relax dependency on invariant TSC
  tools/power turbostat: decode MSR_*_PERF_LIMIT_REASONS
  tools/power turbostat: relax dependency on root permission
2015-02-10 00:35:39 +01:00
Len Brown
a729617c58 tools/power turbostat: relax dependency on APERF_MSR
While turbostat is significantly less useful on systems
with no APERF_MSR, it seems more friendly
to run on such systems and report what we can,
rather than refusing to run.

Update man page to reflect recent changes.

Signed-off-by: Len Brown <len.brown@intel.com>
2015-02-09 18:28:18 -05:00
Len Brown
d789944753 tools/power turbostat: relax dependency on invariant TSC
Turbostat can be useful on systems that do not support invariant TSC,
so allow it to run on those systgems.

All arithmetic in turbostat using the TSC value is per-processsor,
so it does not depend on the TSC values being in sync acrosss processors.

Turbostat uses gettimeofday() for the measurement interval
rather than using the TSC directly, so that key metric
is also immune from variable TSC.

Turbostat prints a TSC sanity check column:

TSC_MHz = TSC_delta/interval

If this column is constant and is close to the processor
base frequency, then the TSC is behaving properly.

The other key turbostat columns are calculated this way:

Avg_Mhz = APERF_delta/interval

%Busy = MPERF_delta/TSC_delta

Bzy_MHz = TSC_delta/APERF_delta/MPERF_delta/interval

Tested on Core2 and Core2-Xeon, and so this patch includes
a few other changes to remove the assumption that target
systems are Nehalem and newer.

Signed-off-by: Len Brown <len.brown@intel.com>
2015-02-09 18:28:08 -05:00
Len Brown
3a9a941d0b tools/power turbostat: decode MSR_*_PERF_LIMIT_REASONS
The Processor generation code-named Haswell
added MSR_{CORE | GFX | RING}_PERF_LIMIT_REASONS
to explain when and how the processor limits frequency.

turbostat -v
will now decode these bits.

Each MSR has an "Active" set of bits which describe
current conditions, and a "Logged" set of bits,
which describe what has happened since last cleared.

Turbostat currently doesn't clear the log bits.

Signed-off-by: Len Brown <len.brown@intel.com>
2015-02-09 16:44:24 -05:00
Len Brown
98481e79b6 tools/power turbostat: relax dependency on root permission
For turbostat to run as non-root, it needs to permissions:

1. read access to /dev/cpu/*/msr
	via standard user/group/world file permissions

2. CAP_SYS_RAWIO
	eg.  # setcap cap_sys_rawio=ep turbostat

Yes, running as root still works.

Signed-off-by: Len Brown <len.brown@intel.com>
2015-02-09 16:41:16 -05:00
David E. Box
82a8094194 ACPICA: Update Copyright headers to 2015
ACPICA commit 8990e73ab2aa15d6a0068b860ab54feff25bee36

Link: https://github.com/acpica/acpica/commit/8990e73a
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-02-05 15:31:43 +01:00
sriram@marirs.net.in
5c1de006e8 cpupower Makefile change to help run the tool without 'make install'
The cpupower tool, when compiled against libcpupower.so fail's to run as
the linker file path's are missing during compilation. So added changes
in the Makefile to run cpupower tool, which helps us run the tool
without doing a 'make install'.

Signed-off-by: Sriram Raghunathan <sriram@marirs.net.in>
Acked-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-01-30 01:47:41 +01:00
Prarit Bhargava
a59e5109f6 tools / cpupower: Fix no idle state information return value
sysfs_get_idlestate_count() returns an unsigned int.  Returning -ENODEV
is not the right thing to do here, and in any case is handled the same
way as if there are no states found.

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Acked-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-12-19 23:01:12 +01:00
Michal Privoznik
ad1d8313cd tools / cpupower: Correctly detect if running as root
Some operations, like frequency-set, need root privileges. However,
the way that this is detected is not correct. The getuid() is called,
while in fact geteuid() should be. This way we can allow
distributions or users to set SETUID flags on the cpupower binary if
they want to and let regular users change the cpu frequency governor.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Acked-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-12-19 23:01:03 +01:00
Prarit Bhargava
2a813f1aaa Revert "tools: cpupower: fix return checks for sysfs_get_idlestate_count()"
This reverts commit 16b7c275c0.

My previous commit 16b7c275c0 ("tools: cpupower: fix return checks for
sysfs_get_idlestate_count()") was not correct.  After looking
at the changelog for cpupower I noticed that Thomas had changed the return of
sysfs_get_idlestate_count() to an unsigned int to simplify the code.  The
problem is really that both he (in his original change) and I (in my new
change) missed the obvious that sysfs_get_idlestate_count()
can't return -ENODEV.  It should just return 0 for "no c-states".

Fixes: 16b7c275c0 (tools: cpupower: fix return checks for ...)
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-12-14 22:14:16 +01:00
Prarit Bhargava
16b7c275c0 tools: cpupower: fix return checks for sysfs_get_idlestate_count()
Red Hat and Fedora use a bug reporting tool that gathers data about
"broken" systems called sosreport.  Among other things, it includes the
output of 'cpupower idle-info'.  Executing 'cpupower idle-info' on a
system that has cpuidle disabled via 'cpuidle.off=1' results in a 300
second hang in the cpupower application.

ie)
[root@intel-brickland-05]# cpupower idle-info
Could not determine cpuidle driver

Analyzing CPU 0:
Number of idle states: -19
[hang]

The problem is that the cpupower code only checks for a zero return from
sysfs_get_idlestate_count().  The function can return -ENODEV (-19) as
above.  This patch fixes callers to sysfs_get_idlestate_count() to check
the right return values.

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-12-05 03:12:34 +01:00
Bob Moore
63c9043b90 ACPICA: acpiexec: Do not put STDIN into raw mode unless it is a terminal.
Eliminate an error message for batch-mode processing on unix
systems. ACPICA BZ 1114.

This patch is mainly for fixing the issues of acpiexec which is not in the
Linux upstream.

Link: https://bugs.acpica.org/show_bug.cgi?id=1114
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-10-21 00:39:40 +02:00
Lv Zheng
f1b697525d ACPICA: acpidump: Add ACPI 1.0 RSDP support.
The acpidump currently always uses ACPI 2.0 format to dump RSDP, this patch
adds ACPI 1.0 RSDP support.

Link: https://bugs.acpica.org/show_bug.cgi?id=1097
Link: https://bugs.acpica.org/show_bug.cgi?id=1103
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Reported-and-tested-by: Rudolf Marek <r.marek@assembler.cz>
Reported-and-tested-by: Rafal <fatwildcat@gmail.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-10-21 00:39:39 +02:00
Linus Torvalds
49899007b9 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
Pull idle update from Len Brown:
 "Two Intel-platform-specific updates to intel_idle, and a cosmetic
  tweak to the turbostat utility"

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
  tools/power turbostat: tweak whitespace in output format
  intel_idle: Broadwell support
  intel_idle: Disable Baytrail Core and Module C6 auto-demotion
2014-08-16 09:25:34 -06:00
Len Brown
e7c95ff32d tools/power turbostat: tweak whitespace in output format
turbostat -S
output was off by 1 space before this patch.

Signed-off-by: Len Brown <len.brown@intel.com>
2014-08-15 17:34:44 -04:00
Rafael J. Wysocki
49c68fd448 Merge branch 'pm-tools'
* pm-tools:
  cpupower: Remove redundant error check
  cpupower: bench: parse.c: Fix several minor errors
  cpupower: mperf monitor: Correct use of ! and &
  cpupower: Adjust MAINTAINERS file
  PM / tools: cpupower: drop negativity check on unsigned value
2014-08-05 22:50:00 +02:00
Peter Senna Tschudin
059802f961 cpupower: Remove redundant error check
Remove double checks, and move the call to print_error to the
first check. Replace break by return, and return 0 on success.
The simplified version of the coccinelle semantic patch that
fixes this issue is as follows:

// <smpl>
@@
expression E; identifier pr; expression list es;
@@
for(...;...;...){
...
-	if (E) break;
+	if (E){
+		pr(es);
+		break;
+	}
...
}
- if(E) pr(es);
// </smpl>

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-30 01:57:13 +02:00
Rickard Strandqvist
13f6de52b1 cpupower: bench: parse.c: Fix several minor errors
Resolved several minor errors in prepare_config() and made some additional improvements.
Earlier, the risk of file stream that was not closed. Misuse of strncpy, and the use of strncmp with strlen that makes it pointless.
I also check that sscanf has been successful, otherwise continue to the next line. And minimized the use of magic numbers.

This was found using a static code analysis program called cppcheck.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-30 01:57:13 +02:00
Himangi Saraogi
97fa1c5ca6 cpupower: mperf monitor: Correct use of ! and &
In commit ae91d60ba8, a bug was fixed that
involved converting !x & y to !(x & y).  The code below shows the same
pattern, and thus should perhaps be fixed in the same way.

The Coccinelle semantic patch that makes this change is as follows:

// <smpl>
@@ expression E1,E2; @@
(
  !E1 & !E2
|
- !E1 & E2
+ !(E1 & E2)
)
// </smpl>

Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-30 01:57:12 +02:00
Andrey Utkin
788606cb88 PM / tools: cpupower: drop negativity check on unsigned value
Link: https://bugzilla.kernel.org/show_bug.cgi?id=80621
Reported-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Andrey Utkin <andrey.krieger.utkin@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-19 21:41:17 +02:00
Bob Moore
ff2389fe66 ACPICA: utprint/oslibcfs: cleanup - no functional change
Some cleanup and comment update.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-08 14:22:27 +02:00
Lv Zheng
4d2c8223f5 ACPICA: OSL: Update acpidump to reduce source code differences
This patch is a result of an ACPICA commit to enables acpidump for EFI. For
Linux kernel, this patch is a no-op. It is only required by the ACPICA
release process to reduce the source code differences between the Linux
kernel and the ACPICA upstream. Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-08 14:22:27 +02:00
Lv Zheng
846d6ef4d7 ACPICA: acpidump: Reduce freopen() invocations to improve portability
This patch reduces the requirement of invoking freopen() in acpidump in order
to reduce the porting effort of acpidump.

This patch achieves this by turning all acpi_os_printf(stdout) into
acpi_ut_file_printf(gbl_output_file). Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-08 14:22:27 +02:00
Lv Zheng
dcaff16df2 ACPICA: acpidump: Replace file IOs with new APIs to improve portability
The new APIs are enabled to offer a portable layer to access files:
 1. acpi_os_XXX_file_XXX: Wrapper of fopen/fclose/fread/fwrite
 2. acpi_os_printf: Wrapper of printf
 3. acpi_log_error: Wrapper of fprintf(stderr)

This patch deploys such mechanisms to acpidump to improve the portability
of this tool. Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-08 14:22:27 +02:00
Lv Zheng
135610f792 ACPICA: acpidump: Remove exit() from generic layer to improve portability
This patch removes exit() from generic acpidump code to improve the
portability of this tool. Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-08 14:22:27 +02:00
Lv Zheng
fbee6b21a3 ACPICA: acpidump: Add memory/string OSL usage to improve portability
This patch adds code to use generic OSL for acpidump to improve the
portability of this tool. Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-08 14:22:27 +02:00
Lv Zheng
a92e95773d ACPICA: Common: Enhance acpi_getopt() to improve portability
This patch enhances acpi_getopt() by converting the standard C library
invocations into portable ACPI string APIs and acpi_log_error() to improve
portability. Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-08 14:22:26 +02:00
Lv Zheng
3c9349c937 ACPICA: Common: Enhance cm_get_file_size() to improve portability
This patch uses abstract file IO and acpi_log_error() APIs to enhance
cm_get_file_size() so that applications that invoke this API could have
portability improved.

With actual references added to abstract file IO and acpi_log_error(), the
applications need to link oslibcfs.o, utdebug.o, utexcep.o, utmath.o,
utprint.o and utxferror.o.

It is also required to add acpi_os_initialize() invocations if an
application starts to use acpi_log_error().

acpidump has already invoked acpi_os_initialize() in this way.  Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-08 14:22:26 +02:00
Lv Zheng
d9cf147dbd ACPICA: Application: Enhance ACPI_USAGE_xxx/ACPI_OPTION with acpi_os_printf() to improve portability
This patch enhances ACPI_USAGE_xxx/ACPI_OPTION macros to use portable
acpi_os_printf() so that usage functions for applications no longer rely on
the printf() API.

To use acpi_os_printf() exported by osunixxf.c as a replacement of
printf(), applications need to initialize acpi_gbl_output_file to stdout
and initialize acpi_gbl_db_output_flags to ACPI_DB_CONSOLE_OUTPUT. The
latter is automatically done by ACPI_INIT_GLOBAL(), applications need to
link utglobal.o to utilize this mechanism. For GCC, assigning stdout to
acpi_gbl_output_file using ACPI_INIT_GLOBAL() is not possible as stdout is
not a constant in GCC environment. As an alternative solution, stdout
assignment has been put into acpi_os_initialize(). Thus
acpi_os_initialize() need to be invoked very early by the applications to
initialize the default output of acpi_os_printf() to keep behavior
consistency.

acpidump has already invoked acpi_os_initialize() in this way. Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-08 14:22:26 +02:00
Lv Zheng
80a648c12e ACPICA: Utilities: Add formatted printing APIs
This patch introduces formatted printing APIs to handle ACPICA specific
formatted print requirements. Currently only specific OSPMs will use this
customized printing support, Linux kernel doesn't use these APIs at this
time. It will be enabled for Linux kernel resident ACPICA after being well
tested. So currently this patch is a no-op.

The specific formatted printing APIs are useful to ACPICA as:
 1. Some portable applications do not link standard C library, so they
    cannot use standard formatted print APIs directly.
 2. Platform specific printing format may differ and thus not portable, for
    example, u64 is %ull for Linux kernel and is %uI64 for some MSVC
    versions.
 3. Platform specific printing format may conflict with ACPICA's usages
    while it is not possible for ACPICA developers to test their code for
    all platforms. For example, developers may generate %pRxxx while Linux
    kernel treats %pR as structured resource printing and decodes variable
    argument as a "struct resource" pointer.
This patch solves above issues by introducing the new APIs.

Note that users of such APIs are not introduced in this patch. Users of
acpi_os_file_vprintf()/acpi_ut_file_printf() need to invoke acpi_os_initialize(),
this should be taken care by the further patches where such users are
introduced. Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-08 14:22:25 +02:00
Lv Zheng
7824f44ecf ACPICA: OSL: Add portable file IO to improve portability
This patch adds portable file IO to generic OSL to improve the portability
of the applications.

A portable application may use different file IO interfaces than the
standard C library ones. This patch thus introduces an abstract file IO
layer into the generic OSL.

Note that this patch does not introduce users of such interfaces, further
patches should introduce users one by one carefully with build tests
performed. Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-08 14:22:25 +02:00
Lv Zheng
83b80bace4 ACPICA: OSL: Clean up acpi_os_printf()/acpi_os_vprintf() stubs
This patch is mainly for acpidump where there are redundant
acpi_os_printf()/acpi_os_vprintf() stubs implemented. This patch cleans up such
specific implementation by linking acpidump to osunixxf.c/oswinxf.c.

To make acpi_os_printf() exported by osunixxf.c/oswinxf.c to behave as the
old acpidump specific ones, applications need to:
 1. Initialize acpi_gbl_db_output_flags to ACPI_DB_CONSOLE_OUTPUT.
    This is automatically done by ACPI_INIT_GLOBAL(), applications need to
    link utglobal.o to utilize this mechanism.
 2. Initialize acpi_gbl_output_file to stdout.
    For GCC, assigning stdout to acpi_gbl_output_file using ACPI_INIT_GLOBAL()
    is not possible as stdout is not a constant in GCC environment. As an
    alternative solution, stdout assignment is put into acpi_os_initialize().
    Thus acpi_os_initialize() need to be invoked very early by the
    applications to initialize the default output of acpi_os_printf().

This patch also releases osunixxf.c to the Linux kernel. Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-08 14:22:25 +02:00
Lv Zheng
e8c038a3c6 ACPICA: Utilities: Cleanup DEFINE_ACPI_GLOBALS by moving acpi_ut_init_global() from utglobal.c to utinit.c
The utglobal.c is used to define and initialize global variables.  It makes
sense if just adding utglobal.o to applications that are using such
variables. But acpi_ut_init_globals() is preventing us from doing so as
this initialization function references other components' initializations
code, which leads to the requirement that many files should also get linked
if one wants to link utglobal.o.

It is possible to just move acpi_ut_init_global() to utinit.c for
applications that require this function to link.

By linking utglobal.o, we can stop defining DEFINE_ACPI_GLOBALS for
applications (currently only acpidump is affected). Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-08 14:22:25 +02:00
Lv Zheng
890fbfa051 ACPICA: acpidump: Add support for ACPI 1.0 GUID in Linux
For older EFI platforms, searches for the RSDP using ACPI 1.0 GUID if the
2.0 GUID search fails.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-07-08 14:22:24 +02:00
Rafael J. Wysocki
2e30baad22 Merge branches 'acpi-tools' and 'pm-tools'
* acpi-tools:
  ACPI / tools: Introduce ec_access.c - tool to access the EC

* pm-tools:
  cpupower: Remove mc and smt power aware scheduler info/settings
  cpupower: cpupower info -b should return 0 on success, not the perf bias value
  cpupower: If root, try to load msr driver on x86 if /dev/cpu/0/msr is not available
  cpupower: Install recently added cpupower-idle-{set, info} manpages
  cpupower: Introduce idle state disable-by-latency and enable-all
  cpupower: Remove all manpages on make uninstall
  cpupower: Remove dead link to homepage, and update the targets built.
  cpupower: Rename cpufrequtils -> cpupower, and libcpufreq -> libcpupower.
  PM / tools: cpupower: add option to display values without round offs
  tools / power: turbostat: Drop temperature checks
2014-06-03 23:13:34 +02:00
Rafael J. Wysocki
057beb1de5 Merge branch 'pm-cpufreq'
* pm-cpufreq: (28 commits)
  cpufreq: handle calls to ->target_index() in separate routine
  cpufreq: s5pv210: drop check for CONFIG_PM_VERBOSE
  cpufreq: intel_pstate: Remove unused member name of cpudata
  cpufreq: Break out early when frequency equals target_freq
  cpufreq: Tegra: drop wrapper around tegra_update_cpu_speed()
  cpufreq: imx6q: Remove unused include
  cpufreq: imx6q: Drop devm_clk/regulator_get usage
  cpufreq: powernow-k8: Suppress checkpatch warnings
  cpufreq: powernv: make local function static
  cpufreq: Enable big.LITTLE cpufreq driver on arm64
  cpufreq: nforce2: remove DEFINE_PCI_DEVICE_TABLE macro
  intel_pstate: Add CPU IDs for Broadwell processors
  cpufreq: Fix build error on some platforms that use cpufreq_for_each_*
  PM / OPP: Move cpufreq specific OPP functions out of generic OPP library
  PM / OPP: Remove cpufreq wrapper dependency on internal data organization
  cpufreq: Catch double invocations of cpufreq_freq_transition_begin/end
  intel_pstate: Remove sample parameter in intel_pstate_calc_busy
  cpufreq: Kconfig: Fix spelling errors
  cpufreq: Make linux-pm@vger.kernel.org official mailing list
  cpufreq: exynos: Use dev_err/info function instead of pr_err/info
  ...
2014-06-03 23:13:20 +02:00
Lv Zheng
2947c1d5f7 ACPICA: acpidump: Fix repetitive table dump in -n mode.
In "-n" mode, reserved tables (RSDP/RSDT/XSDT/DSDT/FACS) are dumped
multiple times due a missing instance check in osl_get_bios_table().
This patch fixes this issue.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-29 01:25:42 +02:00
Thomas Renninger
7ea1bdb8e1 cpupower: Remove mc and smt power aware scheduler info/settings
These kernel interfaces got removed by:

commit 8e7fbcbc22
Author: Peter Zijlstra <peterz@infradead.org>
Date:   Mon Jan 9 11:28:35 2012 +0100

    sched: Remove stale power aware scheduling remnants and dysfunctional knobs

No need to further keep them as userspace configurations.

Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-17 00:36:37 +02:00
Thomas Renninger
3fc5a0e51a cpupower: cpupower info -b should return 0 on success, not the perf bias value
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-17 00:36:37 +02:00
Thomas Renninger
8a19cb5867 cpupower: If root, try to load msr driver on x86 if /dev/cpu/0/msr is not available
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-17 00:36:36 +02:00
Thomas Renninger
84baab9177 cpupower: Install recently added cpupower-idle-{set, info} manpages
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-17 00:36:36 +02:00
Thomas Renninger
69cd502dd8 cpupower: Introduce idle state disable-by-latency and enable-all
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-17 00:36:36 +02:00