Commit Graph

5379 Commits

Author SHA1 Message Date
Linus Torvalds
be90a49ca2 Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (142 commits)
  USB: Fix sysfs paths in documentation
  USB: skeleton: fix coding style issues.
  USB: O_NONBLOCK in read path of skeleton
  USB: make usb-skeleton honor O_NONBLOCK in write path
  USB: skel_read really sucks royally
  USB: Add hub descriptor update hook for xHCI
  USB: xhci: Support USB hubs.
  USB: xhci: Set multi-TT field for LS/FS devices under hubs.
  USB: xhci: Set route string for all devices.
  USB: xhci: Fix command wait list handling.
  USB: xhci: Change how xHCI commands are handled.
  USB: xhci: Refactor input device context setup.
  USB: xhci: Endpoint representation refactoring.
  USB: gadget: ether needs to select CRC32
  USB: fix USBTMC get_capabilities success handling
  USB: fix missing error check in probing
  USB: usbfs: add USBDEVFS_URB_BULK_CONTINUATION flag
  USB: support for autosuspend in sierra while online
  USB: ehci-dbgp,ehci: Allow dbpg to work with suspend/resume
  USB: ehci-dbgp,documentation: Documentation updates for ehci-dbgp
  ...
2009-09-23 09:25:16 -07:00
Jason Wessel
c9530948bc early_printk: Allow more than one early console
It is desirable to be able to use one early boot device to debug
another or to have multiple places you can see the early boot
diagnostics, such as the vga screen or serial device.

This patch changes the early_printk console device registration to
allow more than one early printk device to get registered via
register_console().

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-23 06:46:38 -07:00
Jason Wessel
df6c516900 USB: ehci,dbgp,early_printk: split ehci debug driver from early_printk.c
Move the dbgp early printk driver in advance of refactoring and adding
new code, so the changes to this code are tracked separately from the
move of the code.

The drivers/usb/early directory will be the location of the current
and future early usb code for driving usb devices prior initializing
the standard interrupt driven USB drivers.

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-23 06:46:38 -07:00
Roland McGrath
8cb3ed1393 x86: ptrace: set TS_COMPAT when 32-bit ptrace sets orig_eax>=0
The 32-bit ptrace syscall on a 64-bit kernel (32-bit debugger on
32-bit task) behaves differently than a native 32-bit kernel.  When
setting a register state of orig_eax>=0 and eax=-ERESTART* when the
debugged task is NOT on its way out of a 32-bit syscall, the task will
fail to do the syscall restart logic that it should do.

Test case available at http://sources.redhat.com/cgi-bin/cvsweb.cgi/~checkout~/tests/ptrace-tests/tests/erestartsys-trap.c?cvsroot=systemtap

This happens because the 32-bit ptrace syscall sets eax=0xffffffff
when it sets orig_eax>=0.  The resuming task will not sign-extend this
for the -ERESTART* check because TS_COMPAT is not set.  (So the task
thinks it is restarting after a 64-bit syscall, not a 32-bit one.)

The fix is to have 32-bit ptrace calls set TS_COMPAT when setting
orig_eax>=0.  This ensures that the 32-bit syscall restart logic
will apply when the child resumes.

Signed-off-by: Roland McGrath <roland@redhat.com>
2009-09-22 22:49:24 -07:00
Roland McGrath
08ff18e299 x86: ptrace: do not sign-extend orig_ax on write
The high 32 bits of orig_ax will be ignored when it matters,
so don't fiddle them when setting it.

Signed-off-by: Roland McGrath <roland@redhat.com>
2009-09-22 22:46:48 -07:00
Linus Torvalds
342ff1a1b5 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (34 commits)
  trivial: fix typo in aic7xxx comment
  trivial: fix comment typo in drivers/ata/pata_hpt37x.c
  trivial: typo in kernel-parameters.txt
  trivial: fix typo in tracing documentation
  trivial: add __init/__exit macros in drivers/gpio/bt8xxgpio.c
  trivial: add __init macro/ fix of __exit macro location in ipmi_poweroff.c
  trivial: remove unnecessary semicolons
  trivial: Fix duplicated word "options" in comment
  trivial: kbuild: remove extraneous blank line after declaration of usage()
  trivial: improve help text for mm debug config options
  trivial: doc: hpfall: accept disk device to unload as argument
  trivial: doc: hpfall: reduce risk that hpfall can do harm
  trivial: SubmittingPatches: Fix reference to renumbered step
  trivial: fix typos "man[ae]g?ment" -> "management"
  trivial: media/video/cx88: add __init/__exit macros to cx88 drivers
  trivial: fix typo in CONFIG_DEBUG_FS in gcov doc
  trivial: fix missing printk space in amd_k7_smp_check
  trivial: fix typo s/ketymap/keymap/ in comment
  trivial: fix typo "to to" in multiple files
  trivial: fix typos in comments s/DGBU/DBGU/
  ...
2009-09-22 07:51:45 -07:00
Jan Beulich
3c1596efe1 mm: don't use alloc_bootmem_low() where not strictly needed
Since alloc_bootmem() will never return inaccessible (via virtual
addressing) memory anyway, using the ..._low() variant only makes sense
when the physical address range of the allocated memory must fulfill
further constraints, espacially since on 64-bits (or more generally in all
cases where the pools the two variants allocate from are than the full
available range.

Probably the use in alloc_tce_table() could also be eliminated (based on
code inspection of pci-calgary_64.c), but that seems too risky given I
know nothing about that hardware and have no way to test it.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-22 07:17:38 -07:00
Jan Beulich
4481374ce8 mm: replace various uses of num_physpages by totalram_pages
Sizing of memory allocations shouldn't depend on the number of physical
pages found in a system, as that generally includes (perhaps a huge amount
of) non-RAM pages.  The amount of what actually is usable as storage
should instead be used as a basis here.

Some of the calculations (i.e.  those not intending to use high memory)
should likely even use (totalram_pages - totalhigh_pages).

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: Dave Airlie <airlied@linux.ie>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Patrick McHardy <kaber@trash.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-22 07:17:38 -07:00
Linus Torvalds
43c1266ce4 Merge branch 'perfcounters-rename-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perfcounters-rename-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf: Tidy up after the big rename
  perf: Do the big rename: Performance Counters -> Performance Events
  perf_counter: Rename 'event' to event_id/hw_event
  perf_counter: Rename list_entry -> group_entry, counter_list -> group_list

Manually resolved some fairly trivial conflicts with the tracing tree in
include/trace/ftrace.h and kernel/trace/trace_syscalls.c.
2009-09-21 09:15:07 -07:00
Linus Torvalds
f4eccb6d97 Merge branch 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf_counter, powerpc, sparc: Fix compilation after perf_counter_overflow() change
  perf_counter: x86: Fix PMU resource leak
  perf util: SVG performance improvements
  perf util: Make the timechart SVG width dynamic
  perf timechart: Show the duration of scheduler delays in the SVG
  perf timechart: Show the name of the waker/wakee in timechart
2009-09-21 09:06:31 -07:00
Linus Torvalds
b3727c24da Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Print the hypervisor returned tsc_khz during boot
  x86: Correct segment permission flags in 64-bit linker script
  x86: cpuinit-annotate SMP boot trampolines properly
  x86: Increase timeout for EHCI debug port reset completion in early printk
  x86: Fix uaccess_32.h typo
  x86: Trivial whitespace cleanups
  x86, apic: Fix missed handling of discrete apics
  x86/i386: Remove duplicated #include
  x86, mtrr: Convert loop to a while based construct, avoid naked semicolon
  Revert 'x86: Fix system crash when loading with "reservetop" parameter'
  x86, mce: Fix compile warning in case of CONFIG_SMP=n
  x86, apic: Use logical flat on intel with <= 8 logical cpus
  x86: SGI UV: Map MMIO-High memory range
  x86: SGI UV: Add volatile semantics to macros that access chipset registers
  x86: SGI UV: Fix IPI macros
  x86: apic: Convert BUG() to BUG_ON()
  x86: Remove final bits of CONFIG_X86_OLD_MCE
2009-09-21 09:05:19 -07:00
Michael Tokarev
7da8b6ddc7 trivial: fix missing printk space in amd_k7_smp_check
This trivial patch fixes one missing space in printk.

I already fixed it about half a year ago or more, but the change (in
arch/x86/kernel/cpu/smpboot.c at that time) didn't made into
mainline yet.

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

index 28e5f59..6c139ed 100644
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-09-21 15:14:56 +02:00
Ingo Molnar
57c0c15b52 perf: Tidy up after the big rename
- provide compatibility Kconfig entry for existing PERF_COUNTERS .config's

 - provide courtesy copy of old perf_counter.h, for user-space projects

 - small indentation fixups

 - fix up MAINTAINERS

 - fix small x86 printout fallout

 - fix up small PowerPC comment fallout (use 'counter' as in register)

Reviewed-by: Arjan van de Ven <arjan@linux.intel.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-21 14:34:11 +02:00
Ingo Molnar
cdd6c482c9 perf: Do the big rename: Performance Counters -> Performance Events
Bye-bye Performance Counters, welcome Performance Events!

In the past few months the perfcounters subsystem has grown out its
initial role of counting hardware events, and has become (and is
becoming) a much broader generic event enumeration, reporting, logging,
monitoring, analysis facility.

Naming its core object 'perf_counter' and naming the subsystem
'perfcounters' has become more and more of a misnomer. With pending
code like hw-breakpoints support the 'counter' name is less and
less appropriate.

All in one, we've decided to rename the subsystem to 'performance
events' and to propagate this rename through all fields, variables
and API names. (in an ABI compatible fashion)

The word 'event' is also a bit shorter than 'counter' - which makes
it slightly more convenient to write/handle as well.

Thanks goes to Stephane Eranian who first observed this misnomer and
suggested a rename.

User-space tooling and ABI compatibility is not affected - this patch
should be function-invariant. (Also, defconfigs were not touched to
keep the size down.)

This patch has been generated via the following script:

  FILES=$(find * -type f | grep -vE 'oprofile|[^K]config')

  sed -i \
    -e 's/PERF_EVENT_/PERF_RECORD_/g' \
    -e 's/PERF_COUNTER/PERF_EVENT/g' \
    -e 's/perf_counter/perf_event/g' \
    -e 's/nb_counters/nb_events/g' \
    -e 's/swcounter/swevent/g' \
    -e 's/tpcounter_event/tp_event/g' \
    $FILES

  for N in $(find . -name perf_counter.[ch]); do
    M=$(echo $N | sed 's/perf_counter/perf_event/g')
    mv $N $M
  done

  FILES=$(find . -name perf_event.*)

  sed -i \
    -e 's/COUNTER_MASK/REG_MASK/g' \
    -e 's/COUNTER/EVENT/g' \
    -e 's/\<event\>/event_id/g' \
    -e 's/counter/event/g' \
    -e 's/Counter/Event/g' \
    $FILES

... to keep it as correct as possible. This script can also be
used by anyone who has pending perfcounters patches - it converts
a Linux kernel tree over to the new naming. We tried to time this
change to the point in time where the amount of pending patches
is the smallest: the end of the merge window.

Namespace clashes were fixed up in a preparatory patch - and some
stylistic fallout will be fixed up in a subsequent patch.

( NOTE: 'counters' are still the proper terminology when we deal
  with hardware registers - and these sed scripts are a bit
  over-eager in renaming them. I've undone some of that, but
  in case there's something left where 'counter' would be
  better than 'event' we can undo that on an individual basis
  instead of touching an otherwise nicely automated patch. )

Suggested-by: Stephane Eranian <eranian@google.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Paul Mackerras <paulus@samba.org>
Reviewed-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: <linux-arch@vger.kernel.org>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-21 14:28:04 +02:00
Ingo Molnar
dfc65094d0 perf_counter: Rename 'event' to event_id/hw_event
In preparation to the renames, to avoid a namespace clash.

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-21 12:54:59 +02:00
Ingo Molnar
ae82bfd61c Merge branch 'linus' into perfcounters/rename
Merge reason: pull in all the latest code before doing the rename.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-21 12:51:42 +02:00
Linus Torvalds
ebc79c4f8d Merge git://git.kernel.org/pub/scm/linux/kernel/git/jaswinder/linux-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jaswinder/linux-2.6:
  includecheck fix: x86, cpu/common.c
  includecheck fix: kernel/trace, ring_buffer.c
  includecheck fix: include/linux, ftrace.h
  includecheck fix: include/linux, page_cgroup.h
  includecheck fix: include/linux, aio.h
  includecheck fix: include/drm, drm_memory.h
  includecheck fix: include/acpi, acpi_bus.h
  includecheck fix: drivers/xen, evtchn.c
  includecheck fix: drivers/video, vgacon.c
  includecheck fix: drivers/scsi, ibmvscsi.c
  includecheck fix: drivers/scsi, libfcoe.c
  includecheck fix: x86, shadow.c
  includecheck fix: x86, traps.c
  includecheck fix: um, helper.c
  includecheck fix: s390, sys_s390.c
2009-09-20 16:02:06 -07:00
Linus Torvalds
a57c21c715 Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6:
  Driver-Core: extend devnode callbacks to provide permissions
2009-09-20 15:55:39 -07:00
Linus Torvalds
467f9957d9 Merge branch 'perfcounters-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perfcounters-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (58 commits)
  perf_counter: Fix perf_copy_attr() pointer arithmetic
  perf utils: Use a define for the maximum length of a trace event
  perf: Add timechart help text and add timechart to "perf help"
  tracing, x86, cpuidle: Move the end point of a C state in the power tracer
  perf utils: Be consistent about minimum text size in the svghelper
  perf timechart: Add "perf timechart record"
  perf: Add the timechart tool
  perf: Add a SVG helper library file
  tracing, perf: Convert the power tracer into an event tracer
  perf: Add a sample_event type to the event_union
  perf: Allow perf utilities to have "callback" options without arguments
  perf: Store trace event name/id pairs in perf.data
  perf: Add a timestamp to fork events
  sched_clock: Make it NMI safe
  perf_counter: Fix up swcounter throttling
  x86, perf_counter, bts: Optimize BTS overflow handling
  perf sched: Add --input=file option to builtin-sched.c
  perf trace: Sample timestamp and cpu when using record flag
  perf tools: Increase MAX_EVENT_LENGTH
  perf tools: Fix memory leak in read_ftrace_printk()
  ...
2009-09-20 15:54:37 -07:00
Alok Kataria
6399c08745 x86: Print the hypervisor returned tsc_khz during boot
On an AMD-64 system the processor frequency that is printed during
system boot, may be different than the tsc frequency that was
returned by the hypervisor, due to the value returned from
calibrate_cpu.

For debugging timekeeping or other related issues it might be
better to get the tsc_khz value returned by the hypervisor.

The patch below now prints the tsc frequency that the VMware
hypervisor returned.

Signed-off-by: Alok N Kataria <akataria@vmware.com>
LKML-Reference: <1252095219.12518.13.camel@ank32.eng.vmware.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-20 20:25:36 +02:00
Ingo Molnar
bfefb7a0c6 Merge branch 'linus' into x86/urgent
Merge reason: Bring in changes that the next patch will depend on.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-20 20:25:03 +02:00
Jan Beulich
8d0cc631f6 x86: Correct segment permission flags in 64-bit linker script
While these don't get actively used (afaict), it still doesn't hurt
for them to properly reflect what how respective segments will get
mapped/ accessed.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
LKML-Reference: <4AA0E95F0200007800013707@vpn.id2.novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-20 20:23:47 +02:00
Jan Beulich
5f68563996 x86: cpuinit-annotate SMP boot trampolines properly
Add missing annotations, and make use of include/linux/init.h's
macros.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
LKML-Reference: <4AA0E8F60200007800013703@vpn.id2.novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-20 20:23:37 +02:00
Jan Beulich
414128bd33 x86: Increase timeout for EHCI debug port reset completion in early printk
On one of my systems, several thousand iterations are needed before
CMD_RESET can be observed clear after setting it. Using a much
higher value here obviously cannot hurt.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Yinghai Lu <yhlu.kernel@gmail.com>
LKML-Reference: <4AA0E85D02000078000136F9@vpn.id2.novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-20 20:23:37 +02:00
Felipe Contreras
878f4f533e x86: Trivial whitespace cleanups
Signed-off-by: Felipe Contreras <felipe.contreras@gmail.com>
Cc: Vegard Nossum <vegardno@ifi.uio.no>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Alok N Kataria <akataria@vmware.com>
Cc: "Tan Wei Chong" <wei.chong.tan@intel.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Lin Ming <ming.m.lin@intel.com>
Cc: Bob Moore <robert.moore@intel.com>
LKML-Reference: <1253137123-18047-2-git-send-email-felipe.contreras@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-20 20:18:57 +02:00
Cyrill Gorcunov
8312136fa8 x86, apic: Fix missed handling of discrete apics
In case of discrete (pretty old) apics we may have cpu_has_apic bit
not set but have to check if smp_found_config (MP spec) is there
and apic was not disabled.

Also don't forget to print apic/io-apic for such case as well.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: "Maciej W. Rozycki" <macro@linux-mips.org>
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <20090915071230.GA10604@lenovo>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-20 20:18:07 +02:00
Huang Weiyi
efc8f7419e x86/i386: Remove duplicated #include
Remove duplicated #include in:

  arch/x86/kernel/cpu/common.c

Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-20 20:16:17 +02:00
Joe Perches
9ff6d8e06f x86, mtrr: Convert loop to a while based construct, avoid naked semicolon
Perhaps this is a more readable/standard form.

Signed-off-by: Joe Perches <joe@perches.com>
LKML-Reference: <1252945687.3937.14.camel@Joe-Laptop.home>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-20 20:12:21 +02:00
Peter Zijlstra
a1792cdaca perf_counter: x86: Fix PMU resource leak
Dave noticed that we leak the PMU resource reservations when we
fail the hardware counter init.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: David Miller <davem@davemloft.net>
LKML-Reference: <1252483487.7746.164.camel@twins>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-20 19:53:57 +02:00
Jaswinder Singh Rajput
5ac7687860 includecheck fix: x86, cpu/common.c
fix the following 'make includecheck' warning:

  arch/x86/kernel/cpu/common.c: linux/smp.h is included more than once.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
LKML-Reference: <1252087783.6385.10.camel@ht.satnam>
2009-09-20 16:59:19 +05:30
Jaswinder Singh Rajput
144374dcc3 includecheck fix: x86, traps.c
fix the following 'make includecheck' warning:

  arch/x86/kernel/traps.c: asm/traps.h is included more than once.

Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Sam Ravnborg <sam@ravnborg.org>
LKML-Reference: <1247065094.4382.49.camel@ht.satnam>
2009-09-20 16:00:18 +05:30
Kay Sievers
e454cea20b Driver-Core: extend devnode callbacks to provide permissions
This allows subsytems to provide devtmpfs with non-default permissions
for the device node. Instead of the default mode of 0600, null, zero,
random, urandom, full, tty, ptmx now have a mode of 0666, which allows
non-privileged processes to access standard device nodes in case no
other userspace process applies the expected permissions.

This also fixes a wrong assignment in pktcdvd and a checkpatch.pl complain.

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19 12:50:38 -07:00
Yinghai Lu
eda6da9286 Revert 'x86: Fix system crash when loading with "reservetop" parameter'
After close looking, commit 8126dec3 will break:

 1. some cpu feature  in early stage too, like cpu_has_x2apic
 2. will break built-in-command line
 3. will break other memmap= and mem=
 4. early_dbgp and early_console that will use early_ioremap to access mmio (?)

So revert it.

Reported-by: Hugh Dickins <hugh.dickins@tiscali.co.uk>,
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Cc: Andrew Morton <akpm@linux-foundation.org>,
LKML-Reference: <4AB51DFD.2000904@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-19 20:31:33 +02:00
Andreas Herrmann
a017421ddc x86, mce: Fix compile warning in case of CONFIG_SMP=n
Fix following compile warning:

  arch/x86/kernel/cpu/mcheck/mce_amd.c: In function 'threshold_create_bank':
  arch/x86/kernel/cpu/mcheck/mce_amd.c:492: warning: unused variable 'c'

which shows up when kernel is compiled with CONFIG_SMP=n.

Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
LKML-Reference: <20090915151727.GB21670@alberich.amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-19 19:48:14 +02:00
Arjan van de Ven
288f023e70 tracing, x86, cpuidle: Move the end point of a C state in the power tracer
The "end of a C state" trace point currently happens before
the code runs that corrects the TSC for having stopped during idle.

The result of this is that the timestamp of the end-of-C-state event
is garbage on cpus where the TSC stops during idle.

This patch moves the end point of the C state to after the timekeeping
engine of the kernel has been corrected.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Len Brown <len.brown@intel.com>
Cc: fweisbec@gmail.com
Cc: peterz@infradead.org
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <20090919133533.139c2a46@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-19 18:57:52 +02:00
Arjan van de Ven
6161352142 tracing, perf: Convert the power tracer into an event tracer
This patch converts the existing power tracer into an event tracer,
so that power events (C states and frequency changes) can be
tracked via "perf".

This also removes the perl script that was used to demo the tracer;
its functionality is being replaced entirely with timechart.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20090912130542.6d314860@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-19 11:42:12 +02:00
Ingo Molnar
929bf0d015 Merge branch 'linus' into perfcounters/core
Merge reason: Bring in tracing changes we depend on.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-19 11:28:41 +02:00
Suresh Siddha
2fbd07a5f5 x86, apic: Use logical flat on intel with <= 8 logical cpus
On Intel platforms, we can use logical flat mode if there are <= 8
logical cpu's (irrespective of physical apic id values). This will
enable simplified and efficient IPI and device interrupt routing on
such platforms.

Fix the relevant comments while we are at it.

We can clean up default_setup_apic_routing() by using apic->probe()
but that is a different item.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: "yinghai@kernel.org" <yinghai@kernel.org>
LKML-Reference: <1253327399.3948.747.camel@sbs-t61.sc.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-19 09:20:05 +02:00
Linus Torvalds
78f28b7c55 Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (38 commits)
  x86: Move get/set_wallclock to x86_platform_ops
  x86: platform: Fix section annotations
  x86: apic namespace cleanup
  x86: Distangle ioapic and i8259
  x86: Add Moorestown early detection
  x86: Add hardware_subarch ID for Moorestown
  x86: Add early platform detection
  x86: Move tsc_init to late_time_init
  x86: Move tsc_calibration to x86_init_ops
  x86: Replace the now identical time_32/64.c by time.c
  x86: time_32/64.c unify profile_pc
  x86: Move calibrate_cpu to tsc.c
  x86: Make timer setup and global variables the same in time_32/64.c
  x86: Remove mca bus ifdef from timer interrupt
  x86: Simplify timer_ack magic in time_32.c
  x86: Prepare unification of time_32/64.c
  x86: Remove do_timer hook
  x86: Add timer_init to x86_init_ops
  x86: Move percpu clockevents setup to x86_init_ops
  x86: Move xen_post_allocator_init into xen_pagetable_setup_done
  ...

Fix up conflicts in arch/x86/include/asm/io_apic.h
2009-09-18 14:05:47 -07:00
Markus Metzger
5622f295b5 x86, perf_counter, bts: Optimize BTS overflow handling
Draining the BTS buffer on a buffer overflow interrupt takes too
long resulting in a kernel lockup when tracing the kernel.

Restructure perf_counter sampling into sample creation and sample
output.

Prepare a single reference sample for BTS sampling and update the
from and to address fields when draining the BTS buffer. Drain the
entire BTS buffer between a single perf_output_begin() /
perf_output_end() pair.

Signed-off-by: Markus Metzger <markus.t.metzger@intel.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20090915130023.A16204@sedona.ch.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-18 20:43:20 +02:00
Linus Torvalds
714af06938 Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
  [CPUFREQ] Fix NULL ptr regression in powernow-k8
  [CPUFREQ] Create a blacklist for processors that should not load the acpi-cpufreq module.
  [CPUFREQ] Powernow-k8: Enable more than 2 low P-states
  [CPUFREQ] remove rwsem lock from CPUFREQ_GOV_STOP call (second call site)
  [CPUFREQ] ondemand - Use global sysfs dir for tuning settings
  [CPUFREQ] Introduce global, not per core: /sys/devices/system/cpu/cpufreq
  [CPUFREQ] Bail out of cpufreq_add_dev if the link for a managed CPU got created
  [CPUFREQ] Factor out policy setting from cpufreq_add_dev
  [CPUFREQ] Factor out interface creation from cpufreq_add_dev
  [CPUFREQ] Factor out symlink creation from cpufreq_add_dev
  [CPUFREQ] cleanup up -ENOMEM handling in cpufreq_add_dev
  [CPUFREQ] Reduce scope of cpu_sys_dev in cpufreq_add_dev
  [CPUFREQ] update Doc for cpuinfo_cur_freq and scaling_cur_freq
2009-09-18 09:16:57 -07:00
Linus Torvalds
a03fdb7612 Merge branch 'timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (34 commits)
  time: Prevent 32 bit overflow with set_normalized_timespec()
  clocksource: Delay clocksource down rating to late boot
  clocksource: clocksource_select must be called with mutex locked
  clocksource: Resolve cpu hotplug dead lock with TSC unstable, fix crash
  timers: Drop a function prototype
  clocksource: Resolve cpu hotplug dead lock with TSC unstable
  timer.c: Fix S/390 comments
  timekeeping: Fix invalid getboottime() value
  timekeeping: Fix up read_persistent_clock() breakage on sh
  timekeeping: Increase granularity of read_persistent_clock(), build fix
  time: Introduce CLOCK_REALTIME_COARSE
  x86: Do not unregister PIT clocksource on PIT oneshot setup/shutdown
  clocksource: Avoid clocksource watchdog circular locking dependency
  clocksource: Protect the watchdog rating changes with clocksource_mutex
  clocksource: Call clocksource_change_rating() outside of watchdog_lock
  timekeeping: Introduce read_boot_clock
  timekeeping: Increase granularity of read_persistent_clock()
  timekeeping: Update clocksource with stop_machine
  timekeeping: Add timekeeper read_clock helper functions
  timekeeping: Move NTP adjusted clock multiplier to struct timekeeper
  ...

Fix trivial conflict due to MIPS lemote -> loongson renaming.
2009-09-18 09:15:24 -07:00
Jack Steiner
daf7b9c921 x86: SGI UV: Map MMIO-High memory range
UV depends on the MMRHI space being identity mapped. The patch:

	x86: Make 64-bit efi_ioremap use ioremap on MMIO regions

changed this to make efi regions at a different address using
ioremap. Add the identity mapping to uv_system_init.

( Note this code was previously present but was deleted when BIOS
  added the ranges to the EFI map - previous efi code identify
  mapped the ranges. )

Signed-off-by: Jack Steiner <steiner@sgi.com>
LKML-Reference: <20090909154339.GA7946@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-18 14:06:40 +02:00
Daniel Walker
c2777f98c2 x86: apic: Convert BUG() to BUG_ON()
This was done using Coccinelle's BUG_ON semantic patch.

Signed-off-by: Daniel Walker <dwalker@fifo99.com>
Cc: Julia Lawall <julia@diku.dk>
LKML-Reference: <1252777220-30796-1-git-send-email-dwalker@fifo99.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-18 13:45:33 +02:00
Linus Torvalds
df58bee21e Merge branch 'x86-mce-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-mce-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (21 commits)
  x86, mce: Fix compilation with !CONFIG_DEBUG_FS in mce-severity.c
  x86, mce: CE in last bank prevents panic by unknown MCE
  x86, mce: Fake panic support for MCE testing
  x86, mce: Move debugfs mce dir creating to mce.c
  x86, mce: Support specifying raise mode for software MCE injection
  x86, mce: Support specifying context for software mce injection
  x86, mce: fix reporting of Thermal Monitoring mechanism enabled
  x86, mce: remove never executed code
  x86, mce: add missing __cpuinit tags
  x86, mce: fix "mce" boot option handling for CONFIG_X86_NEW_MCE
  x86, mce: don't log boot MCEs on Pentium M (model == 13) CPUs
  x86: mce: Lower maximum number of banks to architecture limit
  x86: mce: macros to compute banks MSRs
  x86: mce: Move per bank data in a single datastructure
  x86: mce: Move code in mce.c
  x86: mce: Rename CONFIG_X86_NEW_MCE to CONFIG_X86_MCE
  x86: mce: Remove old i386 machine check code
  x86: mce: Update X86_MCE description in x86/Kconfig
  x86: mce: Make CONFIG_X86_ANCIENT_MCE dependent on CONFIG_X86_MCE
  x86, mce: use atomic_inc_return() instead of add by 1
  ...

Manually fixed up trivial conflicts:
	Documentation/feature-removal-schedule.txt
	arch/x86/kernel/cpu/mcheck/mce.c
2009-09-17 21:07:08 -07:00
Linus Torvalds
dcbf77b9e8 Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (37 commits)
  sched: Fix SD_POWERSAVING_BALANCE|SD_PREFER_LOCAL vs SD_WAKE_AFFINE
  sched: Stop buddies from hogging the system
  sched: Add new wakeup preemption mode: WAKEUP_RUNNING
  sched: Fix TASK_WAKING & loadaverage breakage
  sched: Disable wakeup balancing
  sched: Rename flags to wake_flags
  sched: Clean up the load_idx selection in select_task_rq_fair
  sched: Optimize cgroup vs wakeup a bit
  sched: x86: Name old_perf in a unique way
  sched: Implement a gentler fair-sleepers feature
  sched: Add SD_PREFER_LOCAL
  sched: Add a few SYNC hint knobs to play with
  sched: Fix sync wakeups again
  sched: Add WF_FORK
  sched: Rename sync arguments
  sched: Rename select_task_rq() argument
  sched: Feature to disable APERF/MPERF cpu_power
  x86: sched: Provide arch implementations using aperf/mperf
  x86: Add generic aperf/mperf code
  x86: Move APERF/MPERF into a X86_FEATURE
  ...

Fix up trivial conflict in arch/x86/include/asm/processor.h due to
nearby addition of amd_get_nb_id() declaration from the EDAC merge.
2009-09-17 21:00:02 -07:00
Linus Torvalds
1218259b2d Merge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (44 commits)
  vsnprintf: remove duplicate comment of vsnprintf
  softirq: add BLOCK_IOPOLL to softirq_to_name
  oprofile: fix oprofile regression: select RING_BUFFER_ALLOW_SWAP
  tracing: switch function prints from %pf to %ps
  vsprintf: add %ps that is the same as %pS but is like %pf
  tracing: Fix minor bugs for __unregister_ftrace_function_probe
  tracing: remove notrace from __kprobes annotation
  tracing: optimize global_trace_clock cachelines
  MAINTAINERS: Update tracing tree details
  ftrace: document function and function graph implementation
  tracing: make testing syscall events a separate configuration
  tracing: remove some unused macros
  ftrace: add compile-time check on F_printk()
  tracing: fix F_printk() typos
  tracing: have TRACE_EVENT macro use __flags to not shadow parameter
  tracing: add static to generated TRACE_EVENT functions
  ring-buffer: typecast cmpxchg to fix PowerPC warning
  tracing: add filter event logic to special, mmiotrace and boot tracers
  tracing: remove trace_event_types.h
  tracing: use the new trace_entries.h to create format files
  ...
2009-09-17 20:56:37 -07:00
Ingo Molnar
45bd00d31d Merge branch 'linus' into tracing/core
Merge reason: Pick up kernel/softirq.c update for dependent fix.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-09-17 20:53:10 +02:00
Linus Torvalds
de55a8958f Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  amd64_edac: check NB MCE bank enable on the current node properly
  amd64_edac: Rewrite unganged mode code of f10_early_channel_count
  amd64_edac: cleanup amd64_check_ecc_enabled
  x86, EDAC: Provide function to return NodeId of a CPU
  amd64_edac: build driver only on AMD hardware
2009-09-17 09:55:52 -07:00
Kurt Roeckx
f0adb134d8 [CPUFREQ] Fix NULL ptr regression in powernow-k8
Fixes bugzilla #13780

From: Kurt Roeckx <kurt@roeckx.be>
Signed-off-by: Dave Jones <davej@redhat.com>
2009-09-16 11:18:55 -04:00