I wasn't able to further clean up the linker script using the
INIT_DATA_SECTION macro because of the FIXME comment for the
.init.ramfs section; when that is resolved we should convert
microblaze to use INIT_DATA_SECTION.
Signed-off-by: Tim Abbott <tabbott@ksplice.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: microblaze-uclinux@itee.uq.edu.au
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Michal Simek <monstr@monstr.eu>
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>
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>
Commit 5622f295 ("x86, perf_counter, bts: Optimize BTS overflow
handling") removed the regs field from struct perf_sample_data and
added a regs parameter to perf_counter_overflow(). This breaks the
build on powerpc (and Sparc) as reported by Sachin Sant:
arch/powerpc/kernel/perf_counter.c: In function 'record_and_restart':
arch/powerpc/kernel/perf_counter.c:1165: error: unknown field 'regs' specified in initializer
This adjusts arch/powerpc/kernel/perf_counter.c to correspond with the
new struct perf_sample_data and perf_counter_overflow().
[ v2: also fix Sparc, Markus Metzger <markus.t.metzger@intel.com> ]
Reported-by: Sachin Sant <sachinp@in.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Cc: Markus Metzger <markus.t.metzger@intel.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: benh@kernel.crashing.org
Cc: linuxppc-dev@ozlabs.org
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <19127.8400.376239.586120@drongo.ozlabs.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This patch changes the remaining direct references to
.data.page_aligned in C and assembly code to use the macros in
include/linux/linkage.h.
Signed-off-by: Tim Abbott <tabbott@ksplice.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
This patch changes the remaining direct references to
.bss.page_aligned in C and assembly code to use the macros in
include/linux/linkage.h.
Signed-off-by: Tim Abbott <tabbott@ksplice.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Cc: Chris Zankel <chris@zankel.net>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Tim Abbott <tabbott@ksplice.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Ingo points out that I screwed up when merging the 'timers-for-linus'
branch in commit a03fdb7612.
A bit too much copy-and-pasting caused the end result to have an
extraneous 'return' in the middle of an expression. That was obviously
bogus. Blush.
Reported-by-with-patch: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6: (79 commits)
USB serial: update the console driver
usb-serial: straighten out serial_open
usb-serial: add missing tests and debug lines
usb-serial: rename subroutines
usb-serial: fix termios initialization logic
usb-serial: acquire references when a new tty is installed
usb-serial: change logic of serial lookups
usb-serial: put subroutines in logical order
usb-serial: change referencing of port and serial structures
tty: Char: mxser, use THRE for ASPP_OQUEUE ioctl
tty: Char: mxser, add support for CP112UL
uartlite: support shared interrupt lines
tty: USB: serial/mct_u232, fix tty refcnt
tty: riscom8, fix tty refcnt
tty: riscom8, fix shutdown declaration
TTY: fix typos
tty: Power: fix suspend vt regression
tty: vt: use printk_once
tty: handle VT specific compat ioctls in vt driver
n_tty: move echoctl check and clean up logic
...
* '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()
...
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>
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>
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>
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>
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>
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>
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>
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>
ARMv6 introduces non-executable mappings, which can cause prefetch aborts
when an attempt is made to execute from such a mapping. Currently, this
causes us to loop in the page fault handler since we don't correctly
check for proper permissions.
Fix this by checking that VMAs have VM_EXEC set for prefetch aborts.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Since we get notified separately about prefetch aborts, which may be
permission faults, we need to check for appropriate access permissions
when handling a fault. This patch prepares us for doing this by
separating out the access error checking.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Alessandro Rubini <rubini@unipv.it>
Acked-by: Andrea Gallo <andrea.gallo@stericsson.com>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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>
fix the following 'make includecheck' warning:
arch/x86/mm/kmemcheck/shadow.c: linux/module.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: <1247065179.4382.51.camel@ht.satnam>
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>
fix the following 'make includecheck' warning:
arch/um/os-Linux/helper.c: linux/limits.h is included more than once.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Cc: jdike@addtoit.com
Cc: Sam Ravnborg <sam@ravnborg.org>
LKML-Reference: <1247064950.4382.45.camel@ht.satnam>
Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
Albin Tonnerre <albin.tonnerre@free-electrons.com> reported:
Bash 4 filters out variables which contain a dot in them.
This happends to be the case of CPPFLAGS_vmlinux.lds.
This is rather unfortunate, as it now causes
build failures when using SHELL=/bin/bash to compile,
or when bash happens to be used by make (eg when it's /bin/sh)
Remove the common definition of CPPFLAGS_vmlinux.lds by
pushing relevant stuff to either Makefile.build or the
arch specific kernel/Makefile where we build the linker script.
This is also nice cleanup as we move the information out where
it is used.
Notes for the different architectures touched:
arm - we use an already exported symbol
cris - we use a config symbol aleady available
[Not build tested]
mips - the jiffies complexity has moved to vmlinux.lds.S where we need it.
Added a few variables to CPPFLAGS - they are only used by
the linker script.
[Not build tested]
powerpc - removed assignment that is not needed
[not build tested]
sparc - simplified it using $(BITS)
um - introduced a few new exported variables to deal with this
xtensa - added options to CPP invocation
[not build tested]
Cc: Albin Tonnerre <albin.tonnerre@free-electrons.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Chris Zankel <chris@zankel.net>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
ld-option is misnamed as it test options to gcc, not to ld.
Renamed it to reflect this.
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Replace the use of CROSS_COMPILE to select a customized
installkernel script with the possibility to set INSTALLKERNEL
to select a custom installkernel script when running make:
make INSTALLKERNEL=arm-installkernel install
With this patch we are now more consistent across
different architectures - they did not all support use
of CROSS_COMPILE.
The use of CROSS_COMPILE was a hack as this really belongs
to gcc/binutils and the installkernel script does not change
just because we change toolchain.
The use of CROSS_COMPILE caused troubles with an upcoming patch
that saves CROSS_COMPILE when a kernel is built - it would no
longer be installable.
[Thanks to Peter Z. for this hint]
This patch undos what Ian did in commit:
0f8e2d62fa
("use ${CROSS_COMPILE}installkernel in arch/*/boot/install.sh")
The patch has been lightly tested on x86 only - but all changes
looks obvious.
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Mike Frysinger <vapier@gentoo.org> [blackfin]
Acked-by: Russell King <linux@arm.linux.org.uk> [arm]
Acked-by: Paul Mundt <lethal@linux-sh.org> [sh]
Acked-by: "H. Peter Anvin" <hpa@zytor.com> [x86]
Cc: Ian Campbell <icampbell@arcom.com>
Cc: Tony Luck <tony.luck@intel.com> [ia64]
Cc: Fenghua Yu <fenghua.yu@intel.com> [ia64]
Cc: Hirokazu Takata <takata@linux-m32r.org> [m32r]
Cc: Geert Uytterhoeven <geert@linux-m68k.org> [m68k]
Cc: Kyle McMartin <kyle@mcmartin.ca> [parisc]
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> [powerpc]
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> [s390]
Cc: Thomas Gleixner <tglx@linutronix.de> [x86]
Cc: Ingo Molnar <mingo@redhat.com> [x86]
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
fix the following 'make includecheck' warning:
arch/s390/kernel/sys_s390.c: linux/syscalls.h is included more than once.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Cc: schwidefsky@de.ibm.com
Cc: heiko.carstens@de.ibm.com
Cc: Sam Ravnborg <sam@ravnborg.org>
LKML-Reference: <1247068809.4382.111.camel@ht.satnam>
This patch adds prefetch support to access nand flash in mpu mode.
This patch also adds 8-bit nand support (omap_read/write_buf8).
Prefetch can be used for both 8- and 16-bit devices.
Signed-off-by: Vimal Singh <vimalsingh@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
We moved this into uart_state, now move the fields out of the separate
structure and kill it off.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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>
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>
Remove the ARM dependency from the generic "onenand" platform device
driver. This change makes the driver useful for other architectures as
well. Needed for the SuperH kfr2r09 board.
Apart from the obvious Kconfig bits, the most important change is the move
away from ARM specific includes and platform data. Together with this
change the only in-tree board code gets an update, and the driver name is
also changed gracefully break potential out of tree drivers.
The driver is also updated to allow NULL as platform data together with a
few changes to make use of resource_size() and dev_name().
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Kyungmin Park <kmpark@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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>
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>
Just make it depend on BROKEN for now, in case people scream really loud
about it (and because we might want to keep some of this logic for an
upcoming BIOS workaround, so I don't just want to rip it out entirely
just yet). But for graphics devices, it really ought to be unnecessary.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
The check of the s3c_gpios[] index had an off-by-one.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This fixes max_pressure for spitz's touchscreen, and is requirement
for getting reasonable pressure numbers from touchscreen driver.
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
The last deallocation is invalid. In the last iteration, i is -1.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: dmitry pervushin <dpervushin@embeddedalley.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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>
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>
We will be registering and unregistering the soc_camera_platform platform
device multiple times, therefore we need a .release() method and have to
nullify the kobj.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Add a struct device pointer to struct soc_camera_platform_info and let the user
(ap325rxa) pass it down to soc_camera_platform.c in its .add_device() method.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
soc_camera_platform.c is only used by y SuperH ap325rxa board. This patch
converts soc_camera_platform.c and its users for the soc-camera platform-
device conversion and also extends soc-camera core to handle non-I2C cameras.
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
VFP instructions in the kernel may trigger undefined exceptions if VFP
hardware is not present. This patch corrects the loading of such Thumb-2
instructions. It also marks the "no_fp" label as a function so that the
linker generate a Thumb address.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
The patch adds a CLREX or dummy STREX to the exception return path. This
is needed because several atomic/locking operations use a pair of
LDREX/STREXEQ and the EQ condition may not always be satisfied. This
would leave the exclusive monitor status set and may cause problems with
atomic/locking operations in the interrupted code.
With this patch, the atomic_set() operation can be a simple STR
instruction (on SMP systems, the global exclusive monitor is cleared by
STR anyway). Clearing the exclusive monitor during context switch is no
longer needed as this is handled by the exception return path anyway.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Reported-by: Jamie Lokier <jamie@shareable.org>
The definition of the SPI clock phase for the Motorola mode of
the PL022 driver was incorrect: the spec had been interpreted as
data being recieved on rising or falling edge of the clocks while
the correct interpretation is that data can be recieved on the
first or second edge transition, falling or rising depending on
the polarity setting.
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This adds the long debated sched_clock() override for the weak
in-kernel jiffybased sched_clock(). The implementation is more or
less identical to the one used in arch/arm/plat-omap/common.c
and at last attempt to merge this the merge was postponed at the
request of Peter Zijlstra due to pending discussions regarding
generalized clocksource-based sched_clock() implementations by
adding a flag to the clocksource. However that discussion ended
up with the generic code needing to be rewritten and Paul Mundt
see no reason not to proceed with this for the time being as it
can be easily converted once the generic code is in place.
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* '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
Signed-off-by: Geoffrey Thomas <geofft@ksplice.com>
Signed-off-by: Tim Abbott <tabbott@ksplice.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This is largely a straightforward conversion. The patch results in
fewer output sections, and some data being reordered, but should have
no functional impact.
Also, note that this patch moves some data (namely, init_task and
cacheline-aligned) inside [_sdata,_edata].
Because frv already builds using -ffunction-sections -fdata-sections,
we can't use BSS_SECTION or RW_DATA_SECTION yet, since they do not
currently include the required .bss.* and .data.* sections.
Signed-off-by: Nelson Elhage <nelhage@ksplice.com>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Tim Abbott <tabbott@ksplice.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
It appears that frv copied the .altinstructions definitions in its linker
script from x86. Since frv doesn't put anything in those sections, this
is just dead code.
Signed-off-by: Nelson Elhage <nelhage@ksplice.com>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Tim Abbott <tabbott@ksplice.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Now that the last users of markers have migrated to the event
tracer we can kill off the (now orphan) support code.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20090917173527.GA1699@lst.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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>
The .data.idt section is just squashed into the .data.page_aligned
output section by the linker script anyway, so it might as well be in
the .data.page_aligned section.
This eliminates all references to .data.idt on x86.
Signed-off-by: Tim Abbott <tabbott@ksplice.com>
Cc: Ingo Molnar <mingo@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This has the consequence of changing the section name use for head
code from ".text.head" to ".head.text". It also eliminates the
".text.head" output section (instead placing head code at the start of
the .text output section), which should be harmless.
This patch only changes the sections in the actual kernel, not those
in the compressed boot loader.
Signed-off-by: Tim Abbott <tabbott@ksplice.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This has the consequence of changing the section name use for head
code from ".text.head" to ".head.text".
Linus suggested that we merge the ".text.head" section with ".text"
(presumably while preserving the fact that the head code starts at 0).
When I tried this it caused the kernel to not boot.
Signed-off-by: Tim Abbott <tabbott@ksplice.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Previously, the address of the vsyscall page (VSYSCALL_PHYS_ADDR,
VSYSCALL_VIRT_ADDR) was computed by arithmetic on the address of the
last section. This leads to bugs when new sections are inserted, such
as the one fixed by commit d312ceda56.
Let's compute it from the current address instead.
Signed-off-by: Anders Kaseorg <andersk@ksplice.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
* 'for-linus' of git://gitserver.sunplusct.com/linux-2.6-score: (22 commits)
score: add TIF_NOTIFY_RESUME define in asm/thread_info.h
score: make init_thread_union align to THREAD_SIZE
score: update files according to review comments.
score: add old syscall support
score: add MEMORY_START and MEMORY_SIZE define, to make the code clear
score: update inconsistent declare after .c was changed
score: remove unused code, add include files in .c
score: clean up mm/init.c
score: make irq.h definitions local
score: cleanups: dead code, 0 as pointer, shadowed variables
score: fix function prototypes
score: add address space annotations
score: add missing #includes
score: move save arg5 and arg6 instruction in front of enable_irq
score: add prototypes for wrapped syscalls
score: remove init_mm
score: add generic sys_call_table
score: remove __{put,get}_user_unknown
score: unset __ARCH_WANT_IPC_PARSE_VERSION
score: update files according to review comments
...
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (262 commits)
sh: mach-ecovec24: Add user debug switch support
sh: Kill off unused se_skipped in alignment trap notification code.
sh: Wire up HAVE_SYSCALL_TRACEPOINTS.
video: sh_mobile_lcdcfb: use both register sets for display panning
video: sh_mobile_lcdcfb: implement display panning
sh: Fix up sh7705 flush_dcache_page() build.
sh: kfr2r09: document the PLL/FLL <-> RF relationship.
sh: mach-ecovec24: need asm/clock.h.
sh: mach-ecovec24: deassert usb irq on boot.
sh: Add KEYSC support for EcoVec24
sh: add kycr2_delay for sh_keysc
sh: cpufreq: Include CPU id in info messages.
sh: multi-evt support for SH-X3 proto CPU.
sh: clkfwk: remove bogus set_bus_parent() from SH7709.
sh: Fix the indication point of the liquid crystal of AP-325RXA(AP3300)
sh: Add EcoVec24 romImage defconfig
sh: USB disable process is needed if romImage boot for EcoVec24
sh: EcoVec24: add HIZA setting for LED
sh: EcoVec24: write MAC address in boot
sh: Add romImage support for EcoVec24
...
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
[IA64] Clean up linker script using standard macros.
[IA64] Use standard macros for page-aligned data.
[IA64] Use .ref.text, not .text.init for start_ap.
[IA64] sgi-xp: fix printk format warnings
[IA64] ioc4_serial: fix printk format warnings
[IA64] mbcs: fix printk format warnings
[IA64] pci_br, fix infinite loop in find_free_ate()
[IA64] kdump: Short path to freeze CPUs
[IA64] kdump: Try INIT regardless of
[IA64] kdump: Mask INIT first in panic-kdump path
[IA64] kdump: Don't return APs to SAL from kdump
[IA64] kexec: Unregister MCA handler before kexec
[IA64] kexec: Make INIT safe while transition to
[IA64] kdump: Mask MCA/INIT on frozen cpus
Fix up conflict in arch/ia64/kernel/vmlinux.lds.S as per Tony's
suggestion.
* 'davinci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci: (62 commits)
DaVinci: DM646x - platform changes for vpif capture and display drivers
davinci: DM355 - platform changes for vpfe capture
davinci: DM644x platform changes for vpfe capture
davinci: audio: move tlv320aic33 i2c setup into board files
DaVinci: EDMA: Adding 2 new APIs for allocating/freeing PARAMs
DaVinci: DM365: Adding entries for DM365 IRQ's
DaVinci: DM355: Adding PINMUX entries for DM355 Display
davinci: Handle pinmux conflict between mmc/sd and nor flash
davinci: Add NOR flash support for da850/omap-l138
davinci: Add NAND flash support for DA850/OMAP-L138
davinci: Add MMC/SD support for da850/omap-l138
davinci: Add platform support for da850/omap-l138 GLCD
davinci: Macro to convert GPIO signal to GPIO pin number
davinci: Audio support for DA850/OMAP-L138 EVM
davinci: Audio support for DA830 EVM
davinci: Correct the number of GPIO pins for da850/omap-l138
davinci: Configure MDIO pins for EMAC
DaVinci: DM365: Add Support for new Revision of silicon
DaVinci: DM365: Fix Compilation issue due to PINMUX entry
DaVinci: EDMA: Updating default queue handling
...
* '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
* '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.
The early initialization of the pci bus to node mapping leaves all busses
with a node id of -1 if it lacks memory affinity. Thus, cpumask_of_pcibus
must return all online cpus for such busses.
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
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>
Add volatile-semantics to the SGI UV read/write macros that are
used to access chipset memory mapped registers. No direct
references to volatile are made. Instead the readq/writeq macros
are used.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Cc: linux-mm@kvack.org
Cc: dwalker@fifo99.com
Cc: cfriesen@nortel.com
LKML-Reference: <20090910143149.GA14273@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
The UV BIOS has changed the way interrupt remapping is being done.
This affects the id used for sending IPIs. The upper id bits no
longer need to be masked off.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Cc: <stable@kernel.org>
LKML-Reference: <20090909154104.GA25083@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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>
* '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
* '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.
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, pat: don't use rb-tree based lookup in reserve_memtype()
x86: Increase MIN_GAP to include randomized stack
* '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
...
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (51 commits)
MIPS: BCM63xx: Add integrated ethernet mac support.
MIPS: BCM63xx: Add support for the Broadcom BCM63xx family of SOCs.
MIPS: BCM63xx: Add Broadcom 63xx CPU definitions.
MIPS: Octeon: Move some platform device registration to its own file.
MIPS: Don't corrupt page tables on vmalloc fault.
MIPS: Shrink the size of tlb handler
MIPS: Alchemy: override loops_per_jiffy detection
MIPS: hw_random: Add hardware RNG for Octeon SOCs.
MIPS: Octeon: Add hardware RNG platform device.
MIPS: Remove useless zero initializations.
MIPS: Alchemy: get rid of allow_au1k_wait
MIPS: Octeon: Set kernel_uses_llsc to false on non-SMP builds.
MIPS: Allow kernel use of LL/SC to be separate from the presence of LL/SC.
MIPS: Get rid of CONFIG_CPU_HAS_LLSC
MIPS: Malta: Remove pointless use use of CONFIG_CPU_HAS_LLSC
MIPS: Rewrite clearing of ll_bit on context switch in C
MIPS: Rewrite sysmips(MIPS_ATOMIC_SET, ...) in C with inline assembler
MIPS: Consolidate all CONFIG_CPU_HAS_LLSC use in a single C file.
MIPS: Clean up linker script using new linker script macros.
MIPS: Use PAGE_SIZE in assembly instead of _PAGE_SIZE.
...
Merge reason:
Suresh Siddha (1):
x86, pat: don't use rb-tree based lookup in reserve_memtype()
... requires previous x86/pat commits already pushed to Linus.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Recent enhancement of rb-tree based lookup exposed a bug with the lookup
mechanism in the reserve_memtype() which ensures that there are no conflicting
memtype requests for the memory range.
memtype_rb_search() returns an entry which has a start address <= new start
address. And from here we traverse the linear linked list to check if there
any conflicts with the existing mappings. As the rbtree is based on the
start address of the memory range, it is quite possible that we have several
overlapped mappings whose start address is much less than new requested start
but the end is >= new requested end. This results in conflicting memtype
mappings.
Same bug exists with the old code which uses cached_entry from where
we traverse the linear linked list. But the new rb-tree code exposes this
bug fairly easily.
For now, don't use the memtype_rb_search() and always start the search from
the head of linear linked list in reserve_memtype(). Linear linked list
for most of the systems grow's to few 10's of entries(as we track memory type
of RAM pages using struct page). So we should be ok for now.
We still retain the rbtree and use it to speed up free_memtype() which
doesn't have the same bug(as we know what exactly we are searching for
in free_memtype).
Also use list_for_each_entry_from() in free_memtype() so that we start
the search from rb-tree lookup result.
Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
LKML-Reference: <1253136483.4119.12.camel@sbs-t61.sc.intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
commit 85bac32c4a
ring-buffer: only enable ring_buffer_swap_cpu when needed
broke oprofile (at least on s390, but likely on all platforms).
this patch lets oprofile select RING_BUFER_ALLOW_SWAP to make
ring_buffer_swap_cpu usable for oprofile.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
LKML-Reference: <200909162156.49239.borntraeger@de.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Robert Richter <robert.richter@amd.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Todo: Nothing ever detects CPU_BCM6338 but the code tests for it anyway.
Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
There is a bunch of platform device registration in
arch/mips/cavium-octeon/setup.c. We move it to its own file in
preparation for adding more platform devices.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The code after the vmalloc_fault: label in do_page_fault() modifies
user page tables, this is not correct for 64-bit kernels.
For 64-bit kernels we should go straight to the no_context handler
skipping vmalloc_fault.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
By combining swapper_pg_dir and module_pg_dir, several if conditions
can be eliminated from the tlb exception handler. The reason they
can be combined is that, the effective virtual address of vmalloc
returned is at the bottom, and of module_alloc returned is at the
top. It also fixes the bug in vmalloc(), which happens when its
return address is not covered by the first pgd.
Signed-off-by: Wu Fei <at.wufei@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
loops_per_jiffy depends on coreclk speed; preset it instead of
letting the kernel waste precious microseconds trying to approximate it.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Add a platform device for the Octeon Random Number Generator (RNG).
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Eliminate the 'allow_au1k_wait' variable. MIPS kernel installs the
Alchemy-specific wait code before timer initialization; if the C0
timer must be used for timekeeping the wait function is set to NULL
which means no wait implementation is available.
As a sideeffect, the 'wait instruction available' output in
/proc/cpuinfo now correctly indicates whether 'wait' is usable.
Run-tested on DB1200.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
On some CPUs, it is more efficient to disable and enable interrupts in the
kernel rather than use ll/sc for atomic operations. But if we were to set
cpu_has_llsc to false, we would break the userspace futex interface (in
asm/futex.h).
We separate the two concepts, with a new predicate kernel_uses_llsc, that
lets us disable the kernel's use of ll/sc while still allowing the futex
code to use it.
Also there were a couple of cases in bitops.h where we were using ll/sc
unconditionally even if cpu_has_llsc were false.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
CONFIG_CPU_HAS_LLSC duplicated the function of cpu_has_llsc for no good
reason and and the results if the one was enabled and the other disabled
was very unobvious. Remove it now that there are no more remaining users.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This patch results in fewer output sections and in some data being
reordered, but should have no functional impact.
Signed-off-by: Nelson Elhage <nelhage@ksplice.com>
Signed-off-by: Tim Abbott <tabbott@ksplice.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Now that PAGE_SIZE is available to assembly directly, there is no need
to separately expose it as _PAGE_SIZE through asm-offsets.
In addition, remove _PAGE_SHIFT from asm-offsets, since it was never
needed, and is not used anywhere.
Signed-off-by: Nelson Elhage <nelhage@ksplice.com>
Signed-off-by: Tim Abbott <tabbott@ksplice.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This patch makes the board code register the ar7_wdt driver as a platform
device. We move the dynamic resource calculation here since the driver
should not be aware of the AR7 SoC version it is running on.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Because only gcc >=4.4 have loongson-specific support, we need to choose
the suitable -march argument for gcc <= 4.3 and gcc >= 4.4, and here, we
use -march=loongson2e for loongson2e.
Thanks goes to Arnaud Patard <apatard@mandriva.com> for suggestion of
using cc-options(Documentation/kbuild/makefiles.txt). and thanks Zhang
Le for introducing the new CPU_LOONGSON2E kernel option.
NOTE: -mtune option is not need if -march and -mtune use the same value.
Signed-off-by: Zhang Le <r0bertz@gentoo.org>
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The difference between some loongson-based machines is very small, so, if
there is no necessary to add new kernel config options to cope with this
difference, it will be better to share the same kernel image file between
them, benefit from this, the linux distribution developers only have a need
to compile the kernel one time.
This machtype kernel command line argument will be used later to share the
same kernel image file between two different machines(menglong & yeeloong)
made by lemote.
Thanks very much to Zhang Le for cleaning up the machtype implementation.
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
To share common loongson source code between all of the loongson-based
machines. there is a need to split it out of the fuloong-2e/ directory.
at the same time, other according tuning is needed. the machine-specific
parts are defined as macros in relative header file, pci.h, mem.h,
machine.h.
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
To make source code of loongson sharable to the machines(such as gdium)
made by the other companies, we rename arch/mips/lemote to
arch/mips/loongson, asm/mach-lemote to asm/mach-loongson, and rename lm2e
to the name of the machine: fuloong-2e. accordingly, FULONG are renamed to
FULOONG2E to make it distinguishable to the future FULOONG2F. and also,
some other relative tuning is needed.
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This kernel support is needed by the user-space tool:oprofile to profile
linux kernel or applications via loongson2 performance counters. you can
enable this driver via CONFIG_OPROFILE = y or m.
On Loongson2 there are two performance counters, each one can count 16
events respectively. when anyone of the performance counter overflows, an
interrupt will be generated and is routed to the IRQ MIPS_CPU_IRQ_BASE + 6.
Signed-off-by: Yanhua <yanh@lemote.com>
Signed-off-by: Wu Zhangjin <wuzj@lemote.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
RTC_LIB is selected by MIPS by default, and therefore, the legacy RTC
driver is disabled. but fortunately, RTC_LIB not works on fulong, so,
enabling the legcy RTC driver is needed, otherwise, the tools like
hwclock will not work.
Signed-off-by: Wu Zhangjin <wuzj@lemote.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Fixup the wrong original comment of pcimap, and make the source code more
understandable. and also, some new extra consideration is added in.
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
With the help of script/checkpatch.pl, i have cleaned up the coding
style.
1. remove un-needed header files and tune some comments.
2. remove some un-needed { }
add a new header file loongson.h:
3. move some common header files to loongson.h
4. move some common extern declartions to loongson.h
and this new header file is needed for future loongson2f support.
Signed-off-by: Wu Zhangjin <wuzj@lemote.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This patch split the old initilization and setup implementation to
several file, one file one logic function.
the other main changes include:
1. as the script/checkpatch.pl suggests, use strict_strtol instead
of simple_strtol in arch/mips/lemote/lm2e/cmdline.c
2. use the existed macros in asm/mips-boards/bonito64.h as the
arguments of set_io_port_base() and remove the un-needed ones in
asm/mach-lemote/pci.h
Signed-off-by: Wu Zhangjin <wuzj@lemote.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
mips_io_port_base is initialized via set_io_port_base() in
arch/mips/lemote/lm2e/setup.c, we can use it directly here.
Signed-off-by: Wu Zhangjin <wuzj@lemote.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Several magic numbers have been replaced by relative macros, which will be
more readable and understandable.
Signed-off-by: Wu Zhangjin <wuzj@lemote.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The implmentation of loongson2e_power_off and loongson2e_halt is almostly
the same, just preserve one of them.
Signed-off-by: Wu Zhangjin <wuzj@lemote.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This patch is based on the implementation in the lm2e-fixes branch of
Philippe's git://git.linux-cisco.org/linux-mips.git and the
malta-specific early_printk implementation.
Signed-off-by: Wu Zhangjin <wuzj@lemote.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Since the re-implementation of kgdb by commit
8854700115 the platform-specific version
has become superfluous, remove it.
Signed-off-by: Wu Zhangjin <wuzj@lemote.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Removes the existing implementation of early_printk for fulong. The old
implementation was based on the outdated board-specific dbg_io.c.
Since commit 8d60a903d9 dbg_io.c is not longer
needed; it will be removed by the next patch, and a new implementation of
early_printk will be added later.
Signed-off-by: Wu Zhangjin <wuzj@lemote.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Error handling code following a kzalloc should free the allocated data.
Error handling code following an ioremap should iounmap the allocated data.
The semantic match that finds the first problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@r exists@
local idexpression x;
statement S;
expression E;
identifier f,f1,l;
position p1,p2;
expression *ptr != NULL;
@@
x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...);
...
if (x == NULL) S
<... when != x
when != if (...) { <+...x...+> }
(
x->f1 = E
|
(x->f1 == NULL || ...)
|
f(...,x->f1,...)
)
...>
(
return \(0\|<+...x...+>\|ptr\);
|
return@p2 ...;
)
@script:python@
p1 << r.p1;
p2 << r.p2;
@@
print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Some TC35815 variants (i.e. TX493[89] internal ether) report existance of
PM registers though they are not supported. Disable PM features by
clearing pdev->pm_cap.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
page.h includes ifndef __ASSEMBLY__ guards, but PAGE_SIZE and some other
constants are defined using "1UL", which the assembler does not support.
Use the _AC macro from const.h to make them available to assembly (and
linker scripts).
Signed-off-by: Nelson Elhage <nelhage@ksplice.com>
Signed-off-by: Tim Abbott <tabbott@ksplice.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Some drivers use gpio_request/gpio_free regardless of whether
gpiolib is actually built; add stubs to work around the ensuing
compile failures.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Tested-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Header needed for current_cpu_data which expands to smp_processor_id().
However, linux/smp.h can't be included into asm/cpu-info.h due to horrible
circular dependencies, so plug it here.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
The current code only checks CCA of 0 when deciding if a dummy read is
needed. Since the kernel can (and does) use other CCAs we need to
mask out the CCA bits from the address. Since the address constant
now fits in 16 bits, there is an added benefit that smaller code is
generated.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* '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
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: (53 commits)
m68knommu: Make PAGE_SIZE available to assembly files.
m68knommu: fix ColdFire definition of CLOCK_TICK_RATE
m68knommu: set multi-function pins for ethernet when enabled
m68knommu: remove special interrupt handling code for ne2k support
m68knommu: relax IO_SPACE_LIMIT setting
m68knommu: remove ColdFire direct interrupt register access
m68knommu: create a speciailized ColdFire 5272 interrupt controller
m68knommu: add support for second interrupt controller of ColdFire 5249
m68knommu: clean up old ColdFire timer irq setup
m68knommu: map ColdFire interrupts to correct masking bits
m68knommu: clean up ColdFire 532x CPU timer setup
m68knommu: simplify ColdFire "timers" clock initialization
m68knommu: support code to mask external interrupts on old ColdFire CPU's
m68knommu: merge old ColdFire interrupt controller masking macros
m68knommu: remove duplicate ColdFire mcf_autovector() code
m68knommu: move ColdFire INTC definitions to new include file
m68knommu: mask off all interrupts in ColdFire intc-simr controller
m68knommu: remove timer device interrupt setup for ColdFire 532x
m68knommu: remove interrupt masking from ColdFire pit timer
m68knommu: remove unecessary interrupt level setting in ColdFire 520x setup
...
A number of machines that need s3c_device_nand present do not select
this in their Kconfig entries. Add the necessary selection of the
configuration S3C_DEV_NAND so that we avoid the following error:
arch/arm/mach-s3c2410/built-in.o: In function `bast_map_io':
arch/arm/mach-s3c2410/mach-bast.c:634: undefined reference to `s3c_device_nand'
arch/arm/mach-s3c2412/built-in.o: In function `s3c2412_init_uarts':
arch/arm/mach-s3c2412/s3c2412.c:109: undefined reference to `s3c_device_nand'
arch/arm/mach-s3c2412/built-in.o: In function `jive_machine_init':
arch/arm/mach-s3c2412/mach-jive.c:673: undefined reference to `s3c_device_nand'
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Set up some IRQ space to allocation to off-SoC interrupt controllers.
Default this to 16 IRQs. If individual boards require more than this
then they will need to modify this file so allocating a small number
helps reduce the number of modifications required.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Add support for Dynamic Power Switching (DPS) for the RX51 board.
These scripts are still a work-in-progress. I'll keep sending patches to
update the scripts as they are optimised.
Signed-off-by: Amit Kucheria <amit.kucheria@verdurent.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The mcount support that was finally added to the Blackfin gcc port isn't
exactly the same as what ftrace was developed against. Now that the final
gcc version is in place, update the ftrace code to match.
While updating this, fix the swapped arguments to the tracer (signature is
(ip, parent_ip) while we were passing (parent_ip, ip)).
Signed-off-by: Yi Li <yi.li@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The elf_fpregset_t type relied on an empty struct in the asm/user.h, but
the transition to asm-generic/user.h dropped that empty struct. Rather
than restore this useless struct, define the only user (elf_fpregset_t)
as an empty struct itself. This fixes building when ELF dump support is
enabled.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The CPLB implementations (mpu/nompu) had exact copies of the cacheinit
code. Even the i/d cache functions are largely the same. So unify them
both in the common kernel cache code.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The cycles clocksource is a higher resolution than the gptimer one, so
make sure the ratings field reflects this.
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Commit 71e308a239 updated ftrace_push_return_trace() prototype but didn't
update the Blackfin ftrace code, so things broke. Since we don't support
the new stuff yet, call it with stub values.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The cm-bf537u module, while similar to the cm-bf537e, is different enough
to warrant its own resources. It has a USB controller but no PHY.
Signed-off-by: Harald Krapfenbauer <Harald.Krapfenbauer@bluetechnix.at>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The default async timings are a little too fast for the parallel flash
that is attached by default to the async banks. So slow things down a bit
so accessing the hardware is stable.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
When doing XIP, we need to execute out of the async banks, so we need
ICPLBs to allow this.
Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Most messages are already using KERN_ALERT, so be consistent to make
things easier to check with test scripts.
Signed-off-by: Mingquan Pan <grace.pan@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The BF54x has three slave select signals for SPI0/SPI1, not eight.
Signed-off-by: Yi Li <yi.li@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The DTEST write bit is 2, not 1. Improve comments in the related macro
while we're here.
Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Make sure our interrupt entry code with exact hardware errors handles
anomaly 05000283 (infinite stall in system MMR kill) so we don't stall
while under load.
Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
When preempt debugging is enabled, smp_processor_id() may utilize the
"current" structure. This may not be safe to access under all exceptions
due to it being in dynamically allocated memory. So in exception code,
make sure we use raw_smp_processor_id() instead to get at the real value
directly.
Signed-off-by: Yi Li <yi.li@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Not sure whether this has been reported/fixed before.
Today I built a Blackfin tool-chain from scratch for -tip testing,
and it triggers:
arch/blackfin/kernel/vmlinux.lds:1238: undefined section `.data_a_l1' referenced in expression
and:
arch/blackfin/kernel/vmlinux.lds:1238: undefined section `.text_data_l1'
referenced in expression
Now i dont have any way to test this linker script, but it now at
least builds fine after fixing what appears to be typos in those
assert statements.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The majority of the time we are returning to user space, it is not in the
fixed atomic code region. So rather than branch to a function where we
check the PC and return, do the check inline and branch only when needed.
Also, tweak some of the fixed code handling based on assumptions we are
aware of but cannot be expressed in C.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The ASoC drivers have dropped the redundant "-spi" suffix in the driver
name, so update the board resources accordingly.
Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
No one uses these functions, and some are duplicate of existing C code. So
just punt the whole thing.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
These hardware devices are dead and the drivers never cleaned up/merged,
so punt the useless board resource info.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Since the exception handler cannot cause exceptions, we cannot trace it
without easily causing double faults and crashing the system.
Signed-off-by: Yi Li <yi.li@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
We have an item to get this fixed, but in the mean time, disable selection
via Kconfig dependencies.
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The handling of updating the [DI]MEM_CONTROL MMRs does not follow proper
sync procedures as laid out in the Blackfin programming manual. So rather
than audit/fix every call location, create helper functions that do the
right things in order to safely update these MMRs. Then convert all call
sites to use these new helper functions.
While we're fixing the code, drop the workaround for anomaly 05000125 as
that anomaly applies to old versions of silicon that we do not support.
Signed-off-by: Yi Li <yi.li@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Update the ad1836 resources for the new ASoC driver.
Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The board has some parallel flash hooked up to the async banks, so add
appropriate physmap resources for it.
Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Check whether index is within bounds before testing the element.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
I think we have to use the physical dimensions [mm] of the display for
.width and .heigth in struct bfin_bf54xfb_mach_info bf54x_lq043_data which
are copied to fbinfo->var.height/.width in bf54x-lq043fb.c.
linux/fb.h describes this values as 'height/weight of picture in mm'
Otherwise QT calcs the wrong dpi value and the displayed fonts are very
small.
Signed-off-by: Stefan Pledl <stefan.pledl@mesutronic.de>
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The dm9000 driver expects two IORESOURCE_MEM to get at the device, so make
sure we declare things properly.
Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Latest smc91x driver allows you to specify settings in board resources
rather than needing CONFIG_BLACKFIN in the drivers/net/smc91x.h header.
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The interrupt probe workaround doesn't work without hacks to common code,
and the add-on card only needs a simple resistor to fix the problem, so
drop the board-specific hack.
Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Since the hardware only provides reporting for the last exception handled,
and the values are valid only when executing the exception handler, we
need to save the context for reporting at a later point. While we do this
for one exception, it doesn't work properly when handling a second one as
the original exception is clobbered by the double fault. So when double
fault debugging is enabled, create a dedicated shadow of these values and
save/restore out of there. Now the crash report properly displays the
first exception as well as the second one.
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
One too many zeros means we run way faster than the codec can handle.
Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The protect_page() function was incorrectly setting up the hardware tables
based on possible access capabilities rather than the actual requested
values. This means we would grant more access to mmap-ed pages than we
should have. Once we fix this, we need to tweak the signal generated by
such accesses to aline ourselves with other ports. This allows the LTP
mmap0{5,6,7} cases to run properly.
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
I2C_BOARD_INFO() already sets .type, no need to set it again.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Push the device table to the board resources as data interpretation can be
changed on a per-board basis.
Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The end of the stack may not be valid (and that could be OK), so do not
attempt to parse it. If we do, we might use a bad pointer in kernel space
which makes things panic().
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Add the bf538 version of bfin_clear_PPI_STATUS() to match all other ports.
Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The initial BF54x port included some defines to keep code simple across
different processors, but it just ended up causing the UART0 DMA IRQs to
be set to the UART1 channels.
Signed-off-by: Stefan Pledl <stefan.pledl@mesutronic.de>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Allow hardware errors to be caught during early portions of booting, and
leave something in the shadow console that people can use to debug their
system with (to be printed out by the bootloader on next reset).
This enables the hardare error interrupts in head.S, allowing us to find
hardware errors when they happen (well, as much as you can with a hardware
error) and prints out the trace if it is enabled. This will catch errors
(like booting the wrong image on a 533) which previously resulted in a
infinite loop/hang, as well as random hardware errors before before
setup_arch().
To disable this debug only feature - turn off EARLY_PRINTK.
Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Add a memory based shadow console to keep a copy of the printk buffer in a
location which can be found externally. This allows bootloaders to locate
and utilize the log buffer in case of silent (early/resume/etc...) crashes.
Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The FDPIC arches support a standard set of ptrace requests so rather than
define our own custom API, hook up those requests for common code to
leverage.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Rather than defining the locks and initializing them all the time, only do
so when we actually need them (i.e. the SRAM regions exist). This avoids
dead data and code bloat during runtime.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The "TWI_KEYPAD" driver was renamed to "INPUT_PCF8574", so update the
defines in the board resources accordingly.
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Remove code duplication, and only print out memory warnings when they are
an actual problem.
Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The current module relocation code has spotty handling wrt different
memory regions (like L1 instruction). Rather than try to fix each
little spot, use the new common memory functions to greatly simplify
everything and make sure it is always correct.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The current module section handling code has a lot of verbose statements
copied and pasted throughout which makes it pretty hard to digest at a
glance. By unifying all of these up front, it is a lot easier to quickly
get an idea of what is actually going on.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Convert all printk() statements to use the common pr_xxx() funcs and use
the new pr_fmt() function to standardize all of the output.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
All kernel modules are required to be built with -mlong-calls and thus
should not generate any of these relocations. If they do, it means the
module has not been compiled properly, so rather than trying to handle
them (and running into random run time errors) just error out on module
load to force the module to be compiled correctly.
Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Now that we have a Blackfin memory function to figure out how to properly
access the different regions, drop the custom memory range checks in our
ptrace code and use that. It makes the code nicer and fixes bugs where
the ptrace logic wasn't handling all the different regions.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Unify the address display to shrink the code, and add missing decoding of
a few special Blackfin-specific regions (L1 ROM and MMRs).
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Cleanup is performed in two ways:
- remove extraneous updates of IPEND[4] w/ CONFIG_IPIPE,
and document remaining use.
- substitute pop-reg-from-stack instructions with plain SP fixups in
all save-RETI-then-discard patterns.
Signed-off-by: Philippe Gerum <rpm@xenomai.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The purpose of the EVT14 handler may depend on whether CONFIG_IPIPE is
enabled, albeit its implementation can be the same in both cases. When
the interrupt pipeline is enabled, EVT14 can be used to raise the core
priority level for the running code; when CONFIG_IPIPE is off, EVT14
can be used to lower this level before running softirq handlers.
Rename evt14_softirq to evt_evt14 to pick an identifier that fits
both, which allows to reuse the same vector setup code as well.
Signed-off-by: Philippe Gerum <rpm@xenomai.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
ret_from_fork is always entered with hw interrupts off, which prevents
real-time domains to preempt the Linux kernel during part of the
initial context switch to the new task, which could in turn raise the
worst-case latency figures.
To avoid this, stall the root domain stage in the interrupt pipeline
to keep the scheduling tail code free from Linux-handled IRQs, then
enable hardware interrupts again.
Signed-off-by: Philippe Gerum <rpm@xenomai.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
__ipipe_{stall, unstall}_root_raw() identifiers may leave the reader
under the impression that only the virtual state is affected by these
operations, which is wrong. Pick names following the convention used
throughout the interrupt pipeline code.
Signed-off-by: Philippe Gerum <rpm@xenomai.org>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
We handle many exceptions at EVT5 (hardware error level) so that we can
catch exceptions in our exception handling code. Today - if the global
interrupt enable bit (IPEND[4]) is set (interrupts disabled) our trap
handling code goes into a infinite loop, since we need interrupts to be
on to defer things to EVT5.
Normal kernel code should not trigger this for any reason as IPEND[4] gets
cleared early (when doing an interrupt context save) and the kernel stack
there should be sane (or something much worse is happening in the system).
But there have been a few times where this has happened, so this change
makes sure we dump a proper crash message even when things have gone south.
Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
The "cleanup console_print()" patch in commit
353f6dd2de introduced an "extern"
declaration into an assembly language file. Remove it.
Signed-off-by: Anirban Sinha <asinha@zeugmasystems.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
VPIF display changes (Chaithrika)
Add platform device and resource structures. Also define a platform specific
clock setup function that can be accessed by the driver to configure the clock
and CPLD.
VPIF caputure changes (Murali)
1) Modify vpif_subdev_info to add board_info, routing information and
vpif interface configuration. Remove addr since it is part of
board_info
2) Add code to setup channel mode and input decoder path for vpif
capture driver
Also incorporated comments against version v0 of the patch series and
added a spinlock to protect writes to common registers
Tested on DM6467 on channel 0 using TVP514x. Following bootargs used
for drivers:
vpif_capture.ch0_bufsize=829440 vpif_display.ch2_bufsize=829440
Signed-off-by: Manjunath Hadli <mrh@ti.com>
Signed-off-by: Brijesh Jadav <brijesh.j@ti.com>
Signed-off-by: Chaithrika U S <chaithrika@ti.com>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Muralidharan Karicheri <m-karicheri2@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
DM355 platform and board setup
This has platform and board setup changes to support vpfe capture
driver for DM355 EVMs.
Tested video capture on DM355 using tvp514x
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Reviewed-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Reviewed-by: David Brownell <david-b@pacbell.net>
Signed-off-by: Muralidharan Karicheri <m-karicheri2@ti.com>
Signed-off-by: Denys Dmytriyenko <denis@denix.org>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
DM644x platform and board setup
This adds platform and board setup changes required to support
vpfe capture driver on DM644x
Tested video capture on DM6446 with tvp514x driver
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Reviewed-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Reviewed-by: David Brownell <david-b@pacbell.net>
Signed-off-by: Muralidharan Karicheri <m-karicheri2@ti.com>
Signed-off-by: Denys Dmytriyenko <denis@denix.org>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (75 commits)
PCI hotplug: clean up acpi_run_hpp()
PCI hotplug: acpiphp: use generic pci_configure_slot()
PCI hotplug: shpchp: use generic pci_configure_slot()
PCI hotplug: pciehp: use generic pci_configure_slot()
PCI hotplug: add pci_configure_slot()
PCI hotplug: clean up acpi_get_hp_params_from_firmware() interface
PCI hotplug: acpiphp: don't cache hotplug_params in acpiphp_bridge
PCI hotplug: acpiphp: remove superfluous _HPP/_HPX evaluation
PCI: Clear saved_state after the state has been restored
PCI PM: Return error codes from pci_pm_resume()
PCI: use dev_printk in quirk messages
PCI / PCIe portdrv: Fix pcie_portdrv_slot_reset()
PCI Hotplug: convert acpi_pci_detect_ejectable() to take an acpi_handle
PCI Hotplug: acpiphp: find bridges the easy way
PCI: pcie portdrv: remove unused variable
PCI / ACPI PM: Propagate wake-up enable for devices w/o ACPI support
ACPI PM: Replace wakeup.prepared with reference counter
PCI PM: Introduce device flag wakeup_prepared
PCI / ACPI PM: Rework some debug messages
PCI PM: Simplify PCI wake-up code
...
Fixed up conflict in arch/powerpc/kernel/pci_64.c due to OF device tree
scanning having been moved and merged for the 32- and 64-bit cases. The
'needs_freset' initialization added in 6e19314cc ("PCI/powerpc: support
PCIe fundamental reset") is now in arch/powerpc/kernel/pci_of_scan.c.
Sysbench thinks SD_BALANCE_WAKE is too agressive and kbuild doesn't
really mind too much, SD_BALANCE_NEWIDLE picks up most of the
slack.
On a dual socket, quad core, dual thread nehalem system:
sysbench (--num_threads=16):
SD_BALANCE_WAKE-: 13982 tx/s
SD_BALANCE_WAKE+: 15688 tx/s
kbuild (-j16):
SD_BALANCE_WAKE-: 47.648295846 seconds time elapsed ( +- 0.312% )
SD_BALANCE_WAKE+: 47.608607360 seconds time elapsed ( +- 0.026% )
(same within noise)
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
get/set_wallclock() have already a set of platform dependent
implementations (default, EFI, paravirt). MRST will add another
variant.
Moving them to platform ops simplifies the existing code and minimizes
the effort to integrate new variants.
Signed-off-by: Feng Tang <feng.tang@intel.com>
LKML-Reference: <new-submission>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Add VM_FAULT_HWPOISON handling to the x86 page fault handler. This is
very similar to VM_FAULT_OOM, the only difference is that a different
si_code is passed to user space and the new addr_lsb field is initialized.
v2: Make the printk more verbose/unique
Cc: x86@kernel.org
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Acked-by: H. Peter Anvin <hpa@zytor.com>
init_IRQ() and x86_late_time_init() are missing __init annotations.
The x86 platform ops variables are annotated, but the annotation needs
to be put between the variable name and the "=" of the initializer.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This is necessary to get ftrace syscall tracing working again.. a fairly
trivial and mechanical change. The one benefit is that this can also be
enabled on sh64, despite not having its own ftrace port.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Many years ago when this driver was written, it had a use, but these
days it's nothing but trouble and distributions should not enable it
in any situation.
Pretty much every console device a sparc machine could see has a
bonafide real driver, making the PROM console hack unnecessary.
If any new device shows up, we should write a driver instead of
depending upon this crutch to save us. We've been able to take care
of this even when no chip documentation exists (sunxvr500, sunxvr2500)
so there are no excuses.
Signed-off-by: David S. Miller <davem@davemloft.net>
s3c2410_dma_enqueue makes call to kzalloc and dma_pool_alloc with GFP_KERNEL
flag set, this can be an issue for drivers, like I2S, which call
s3c2410_dma_enqueue from dma-bufferdone callback.
Change the flag GFP_KERNEL to GFP_ATOMIC to avoid any problems.
Signed-Off-by: Jassi <jassi.brar@samsung.com>
[ben-linux@fluff.org: Minor description edit and re-wrap]
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Provide actual minimum(struct pl080s_lli) size of block to
dma_pool_create call, instead of hardcoded 32 bytes.
Signed-Off-by: Jassi <jassi.brar@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Correct the lli structure in struct s3c64xx_dma_buff which should
have been 'struct pl080s_lli' (samsung specific) instead of the generic
version 'struct pl080_lli'
Signed-Off-by: Jassi <jassi.brar@samsung.com>
[ben-linux@fluff.org: Edited description and subject fields]
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
In s3c64xx_roundrate_clksrc function, the calculation is wrong. This
patch fixes this calculation.
Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This ensures the clock hierarchy data structures are updated when we
change the clock source in the actual hardware registers.
Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
[ben-linux@fluff.org: Minor re-indentation of subject]
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
In s3c64xx_setrate_clksrc() we used sclk->shift, but actually need to
use sclk->divider_shift to correctly calculate the value for the divider
register.
Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
[ben-linux@fluff.org: Minor re-indentation of description]
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
The good definition of CLOCK_TICK_RATE for coldfires has been lost in the
merge of m68k and m68knommu include files. Restore it. Culprit :
commit ebafc17468
Signed-off-by: Philippe De Muyter <phdm@macqel.be>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
The ethernet pins on the 532x ColdFire CPU family are multi-function
pins. We need to enable them as ethernet pins when using the FEC
ethernet driver.
Bug report, and older patch, from timothee@manaud.net.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
The improved interrupt support for ColdFire CPU cores means we no
longer need all the interrupt setup and ack hacks to support the NE2000
driver on ColdFire platforms. Remove all that code.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
There is really no limit to the addresses which can be used by the
in*() and out*() family of IO space calls in m68k non-MMU environments.
So don't impose an artificial address limit, allow the full 32bit range.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Now that the ColdFire 5272 has full interrupt controller functionality
we can remove all the interrupt masking and acking code from the FEC
ethernet driver.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
The ColdFire 5272 CPU has a very different interrupt controller than
any of the other ColdFire parts. It needs its own controller code to
correctly setup and ack interrupts.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
The ColdFire 5249 CPU has a second (compleletly different) interrupt
controller. It is the only ColdFire CPU that has this type. It controlls
GPIO interrupts amongst a number of interrupts from other internal
peripherals. Add support code for it.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
The recent changes to the old ColdFire interrupt controller code means
we no longer need to manually unmask the timer interrupt. That is now
done in the interrupt controller code proper.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
The older simple ColdFire interrupt controller has no one-to-one mapping
of interrupt numbers to bits in the interrupt mask register. Create a
mapping array that each ColdFire CPU type can populate with its available
interrupts and the bits that each use in the interrupt mask register.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
The newer ColdFire 532x family of CPU's uses the old timer, but has a
newer interrupt controller. It doesn't need the special timer setup
that was required when using the older interrupt controller. Remove the
dead timer irq and level setting code, and define the hard coded vector.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
The ColdFire "timers" clock setup can be simplified. There is really no
need for the flexible per-platform setup code. The clock interrupt can be
hard defined per CPU platform (in CPU include files). This makes the
actual timer code simpler.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
The external interrupts used on the old Coldfire parts with the old style
interrupt controller can be properly mask/unmasked in the interrupt
handling code.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Currently the code that supports setting the old style ColdFire interrupt
controller mask registers is macros in the include files of each of the
CPU types. Merge all these into a set of real masking functions in the
old Coldfire interrupt controller code proper. All the macros are basically
the same (excepting a register size difference on really early parts).
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Each of the ColdFire CPU platform code that used the old style interrupt
controller had its own copy of the mcf_autovector() function. They are all
the same, remove them all and create a single function in the common
coldfire/intc.c code.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Create an mcfintc.h include file with the definitions for the old style
ColdFire interrupt controller. They are only needed on CPU's that use
this old controller - so isolate them on their own.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
The ColdFire intc-simr interrupt controller should mask off all
interrupt sources at init time. Doing it here instead of separately
in each platform setup.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
With fully implemented interrupt controller code we don't need to do
the custom interrupt setup for the timer device of the ColdFire 532x.
Remove that code.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
With proper interrupt controller code in place there is no need for
devices like the timers to have custom interrupt masking code.
Remove it (and the defines that go along with it).
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
The new code for the interrupt controller in the ColdFire 520x takes
care of all the interrupt controller setup. No manual config of the
level registers (ICR) is required by the platform device setup code.
So remove it.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Each different m68knommu CPU interrupt controller type has its own
interrupt controller data structures now. Remove the old, and now not
used, common irq structs and init code from here.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Define the interrupt controller structures along with the interrupt
controller code for the 68360 CPU. This brings the interrupt setup
and control into one place for this CPU family.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Define the interrupt controller structures along with the interrupt
controller code for the 68328 CPU family. This brings the interrupt
setup and control into one place for this CPU family.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
The old ColdFire CPU's (5206, 5307, 5407, 5249 etc) use a simple
interrupt controller. Use common setup code for them. This addition
means that all ColdFire CPU's now have some specific type of interrupt
controller code.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
With the common intc-simr interrupt controller code in place the ColdFire
532x family startup code can be greatly simplified. Remove all the
interrupt masking code, and the per-device interrupt config here.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
The ColdFire 532x family of parts uses 2 of the same INTC interrupt
controlers used in the ColdFire 520x family. So modify the code to
support both parts. The extra code for the second INTC controler in
the case of the 520x is easily optimized away to nothing.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
With the common intc-2 interrupt controller code in place the ColdFire
523x family startup code can be greatly simplified. Remove all the
interrupt masking code, and the per-device interrupt config here.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
With the common intc-2 interrupt controller code in place the ColdFire
528x family startup code can be greatly simplified. Remove all the
interrupt masking code, and the per-device interrupt config here.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
With the common intc-2 interrupt controller code in place the ColdFire
527x family startup code can be greatly simplified. Remove all the
interrupt masking code, and the per-device interrupt config here.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Create general interrupt controller code for the many ColdFire version 2
cores that use the two region INTC interrupt controller. This includes the
523x family, 5270, 5271, 5274, 5275, and the 528x families.
This code does proper masking and unmasking of interrupts. With this in
place some of the driver hacks in place to support ColdFire interrupts
can finally go away.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
With general interrupt controller code in place we don't need specific
unmasking code for the internal ColdFire 520x UARTs or ethernet (FEC).
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Create general interrupt controller code for the ColdFire 520x family,
that does proper masking and unmasking of interrupts. With this in
place some of the driver hacks in place to support ColdFire interrupts
can finally go away.
Within the ColdFire family there is a variety of different interrupt
controllers in use. Some are used on multiple parts, some on only one.
There is quite some differences in some varients, so much so that
common code for all ColdFire parts would be impossible.
This commit introduces code to support one of the newer interrupt
controllers in the ColdFire 5208 and 5207 parts. It has very simple
mask and unmask operations, so is one of the easiest to support.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
The non-mmu version of dma.h contains a lot of ColdFire specific DMA
support, but also all of the base m68k support. So use the non-mmu
version of dma.h for all.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
It is reasonably strait forward to merge the mmu and non-mmu versions
of irq.h. Most of the defines and structs are not needed on non-mmu.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
The mmu and non-mmu versions of processor.h have a lot of common code.
This is a strait forward merge. start_thread() could be improved, but
that is not quite as strait forward, leaving for a follow on change.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
This makes it possible to pass down the host controller
capabilities for the MMCI driver using the platform data. It
also provides the capabilties for the U300 implementation as an
example, and makes sure the 4bit wide mode is set if this is
requested by the ios() now that we can actually set that
capability for a platform.
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This adds the TCM interface to Linux, when active, it will
detect and report TCM memories and sizes early in boot if
present, introduce generic TCM memory handling, provide a
generic TCM memory pool and select TCM memory for the U300
platform.
See the Documentation/arm/tcm.txt for documentation.
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Optimized version of copy_page() was written with assumption that cache
line size is 32 bytes. On Cortex-A8 cache line size is 64 bytes.
This patch tries to generalize copy_page() to work with any cache line
size if cache line size is multiple of 16 and page size is multiple of
two cache line size.
After this optimization we've got ~25% speedup on OMAP3(tested in
userspace).
There is test for kernelspace which trigger copy-on-write after fork():
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define BUF_SIZE (10000*4096)
#define NFORK 200
int main(int argc, char **argv)
{
char *buf = malloc(BUF_SIZE);
int i;
memset(buf, 0, BUF_SIZE);
for(i = 0; i < NFORK; i++) {
if (fork()) {
wait(NULL);
} else {
int j;
for(j = 0; j < BUF_SIZE; j+= 4096)
buf[j] = (j & 0xFF) + 1;
break;
}
}
free(buf);
return 0;
}
Before optimization this test takes ~66 seconds, after optimization
takes ~56 seconds.
Signed-off-by: Siarhei Siamashka <siarhei.siamashka@nokia.com>
Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Currently kernel believes that all ARM CPUs have L1_CACHE_SHIFT == 5.
It's not true at least for CPUs based on Cortex-A8.
List of CPUs with cache line size != 32 should be expanded later.
Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Currently build with the next head fails on archs using PL190
VIC because when we include amba/bus.h we need to include
device.h first.
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Aside from using fewer output sections and moving some data around,
the main side effect of this change is changing the alignment of some
sections. In particular:
* cachline-aligned and read_mostly data are now aligned to
SMP_CACHE_BYTES. (Previously, they were laid out consecutively after
a PAGE_SIZE alignment)
* .init.ramfs is now page-aligned, per the INIT_RAM_FS
macro. (Previously it had no explicit alignment).
Signed-off-by: Nelson Elhage <nelhage@ksplice.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (134 commits)
powerpc/nvram: Enable use Generic NVRAM driver for different size chips
powerpc/iseries: Fix oops reading from /proc/iSeries/mf/*/cmdline
powerpc/ps3: Workaround for flash memory I/O error
powerpc/booke: Don't set DABR on 64-bit BookE, use DAC1 instead
powerpc/perf_counters: Reduce stack usage of power_check_constraints
powerpc: Fix bug where perf_counters breaks oprofile
powerpc/85xx: Fix SMP compile error and allow NULL for smp_ops
powerpc/irq: Improve nanodoc
powerpc: Fix some late PowerMac G5 with PCIe ATI graphics
powerpc/fsl-booke: Use HW PTE format if CONFIG_PTE_64BIT
powerpc/book3e: Add missing page sizes
powerpc/pseries: Fix to handle slb resize across migration
powerpc/powermac: Thermal control turns system off too eagerly
powerpc/pci: Merge ppc32 and ppc64 versions of phb_scan()
powerpc/405ex: support cuImage via included dtb
powerpc/405ex: provide necessary fixup function to support cuImage
powerpc/40x: Add support for the ESTeem 195E (PPC405EP) SBC
powerpc/44x: Add Eiger AMCC (AppliedMicro) PPC460SX evaluation board support.
powerpc/44x: Update Arches defconfig
powerpc/44x: Update Arches dts
...
Fix up conflicts in drivers/char/agp/uninorth-agp.c
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: (46 commits)
powerpc64: convert to dynamic percpu allocator
sparc64: use embedding percpu first chunk allocator
percpu: kill lpage first chunk allocator
x86,percpu: use embedding for 64bit NUMA and page for 32bit NUMA
percpu: update embedding first chunk allocator to handle sparse units
percpu: use group information to allocate vmap areas sparsely
vmalloc: implement pcpu_get_vm_areas()
vmalloc: separate out insert_vmalloc_vm()
percpu: add chunk->base_addr
percpu: add pcpu_unit_offsets[]
percpu: introduce pcpu_alloc_info and pcpu_group_info
percpu: move pcpu_lpage_build_unit_map() and pcpul_lpage_dump_cfg() upward
percpu: add @align to pcpu_fc_alloc_fn_t
percpu: make @dyn_size mandatory for pcpu_setup_first_chunk()
percpu: drop @static_size from first chunk allocators
percpu: generalize first chunk allocator selection
percpu: build first chunk allocators selectively
percpu: rename 4k first chunk allocator to page
percpu: improve boot messages
percpu: fix pcpu_reclaim() locking
...
Fix trivial conflict as by Tejun Heo in kernel/sched.c
Due to problems at cam.org, my nico@cam.org email address is no longer
valid. FRom now on, nico@fluxnic.net should be used instead.
Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
It seems that start_ap doesn't need to be in a special location in the
kernel, but it references some init code so it should be in .ref.text.
Since this is the only thing in the .text.head section, eliminate
.text.head from the linker script.
Signed-off-by: Tim Abbott <tabbott@ksplice.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
* 'x86-pat-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, pat: Fix cacheflush address in change_page_attr_set_clr()
mm: remove !NUMA condition from PAGEFLAGS_EXTENDED condition set
x86: Fix earlyprintk=dbgp for machines without NX
x86, pat: Sanity check remap_pfn_range for RAM region
x86, pat: Lookup the protection from memtype list on vm_insert_pfn()
x86, pat: Add lookup_memtype to get the current memtype of a paddr
x86, pat: Use page flags to track memtypes of RAM pages
x86, pat: Generalize the use of page flag PG_uncached
x86, pat: Add rbtree to do quick lookup in memtype tracking
x86, pat: Add PAT reserve free to io_mapping* APIs
x86, pat: New i/f for driver to request memtype for IO regions
x86, pat: ioremap to follow same PAT restrictions as other PAT users
x86, pat: Keep identity maps consistent with mmaps even when pat_disabled
x86, mtrr: make mtrr_aps_delayed_init static bool
x86, pat/mtrr: Rendezvous all the cpus for MTRR/PAT init
generic-ipi: Allow cpus not yet online to call smp_call_function with irqs disabled
x86: Fix an incorrect argument of reserve_bootmem()
x86: Fix system crash when loading with "reservetop" parameter
* 'x86-txt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, intel_txt: clean up the impact on generic code, unbreak non-x86
x86, intel_txt: Handle ACPI_SLEEP without X86_TRAMPOLINE
x86, intel_txt: Fix typos in Kconfig help
x86, intel_txt: Factor out the code for S3 setup
x86, intel_txt: tboot.c needs <asm/fixmap.h>
intel_txt: Force IOMMU on for Intel TXT launch
x86, intel_txt: Intel TXT Sx shutdown support
x86, intel_txt: Intel TXT reboot/halt shutdown support
x86, intel_txt: Intel TXT boot support
* 'agp-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/agp-2.6:
agp/intel: remove restore in resume
agp: fix uninorth build
intel-agp: Set dma mask for i915
agp: kill phys_to_gart() and gart_to_phys()
intel-agp: fix sglist allocation to avoid vmalloc()
intel-agp: Move repeated sglist free into separate function
agp: Switch agp_{un,}map_page() to take struct page * argument
agp: tidy up handling of scratch pages w.r.t. DMA API
intel_agp: Use PCI DMA API correctly on chipsets new enough to have IOMMU
agp: Add generic support for graphics dma remapping
agp: Switch mask_memory() method to take address argument again, not page
When
* there is almost out of ates
* one asks for more than one ate
* there are some available at the end of ate array
then the inner for loop will end without incrementing 'index'. This
means the outer loop will start at the same point finding it's available
and runs the inner loop again from the same index. This repeats forever.
Hence make sure we check we were at the end of ate array and return
an error in such case.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Found-by: Jeff Mahoney <jeffm@novell.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
APERF/MPERF support for cpu_power.
APERF/MPERF is arch defined to be a relative scale of work capacity
per logical cpu, this is assumed to include SMT and Turbo mode.
APERF/MPERF are specified to both reset to 0 when either counter
wraps, which is highly inconvenient, since that'll give a blimp
when that happens. The manual specifies writing 0 to the counters
after each read, but that's 1) too expensive, and 2) destroys the
possibility of sharing these counters with other users, so we live
with the blimp - the other existing user does too.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Move some of the aperf/mperf code out from the cpufreq driver
thingy so that other people can enjoy it too.
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: Yanmin <yanmin_zhang@linux.intel.com>
Cc: Dave Jones <davej@redhat.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: cpufreq@vger.kernel.org
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Move the APERFMPERF capacility into a X86_FEATURE flag so that it
can be used outside of the acpi cpufreq driver.
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: Yanmin <yanmin_zhang@linux.intel.com>
Cc: Dave Jones <davej@redhat.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: cpufreq@vger.kernel.org
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
If we're looking to place a new task, we might as well find the
idlest position _now_, not 1 tick ago.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Make the idle balancer more agressive, to improve a
x264 encoding workload provided by Jason Garrett-Glaser:
NEXT_BUDDY NO_LB_BIAS
encoded 600 frames, 252.82 fps, 22096.60 kb/s
encoded 600 frames, 250.69 fps, 22096.60 kb/s
encoded 600 frames, 245.76 fps, 22096.60 kb/s
NO_NEXT_BUDDY LB_BIAS
encoded 600 frames, 344.44 fps, 22096.60 kb/s
encoded 600 frames, 346.66 fps, 22096.60 kb/s
encoded 600 frames, 352.59 fps, 22096.60 kb/s
NO_NEXT_BUDDY NO_LB_BIAS
encoded 600 frames, 425.75 fps, 22096.60 kb/s
encoded 600 frames, 425.45 fps, 22096.60 kb/s
encoded 600 frames, 422.49 fps, 22096.60 kb/s
Peter pointed out that this is better done via newidle_idx,
not via LB_BIAS, newidle balancing should look for where
there is load _now_, not where there was load 2 ticks ago.
Worst-case latencies are improved as well as no buddies
means less vruntime spread. (as per prior lkml discussions)
This change improves kbuild-peak parallelism as well.
Reported-by: Jason Garrett-Glaser <darkshikari@gmail.com>
Signed-off-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1253011667.9128.16.camel@marge.simson.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
When merging select_task_rq_fair() and sched_balance_self() we lost
the use of wake_idx, restore that and set them to 0 to make wake
balancing more aggressive.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
The problem with wake_idle() is that is doesn't respect things like
cpu_power, which means it doesn't deal well with SMT nor the recent
RT interaction.
To cure this, it needs to do what sched_balance_self() does, which
leads to the possibility of merging select_task_rq_fair() and
sched_balance_self().
Modify sched_balance_self() to:
- update_shares() when walking up the domain tree,
(it only called it for the top domain, but it should
have done this anyway), which allows us to remove
this ugly bit from try_to_wake_up().
- do wake_affine() on the smallest domain that contains
both this (the waking) and the prev (the wakee) cpu for
WAKE invocations.
Then use the top-down balance steps it had to replace wake_idle().
This leads to the dissapearance of SD_WAKE_BALANCE and
SD_WAKE_IDLE_FAR, with SD_WAKE_IDLE replaced with SD_BALANCE_WAKE.
SD_WAKE_AFFINE needs SD_BALANCE_WAKE to be effective.
Touch all topology bits to replace the old with new SD flags --
platforms might need re-tuning, enabling SD_BALANCE_WAKE
conditionally on a NUMA distance seems like a good additional
feature, magny-core and small nehalem systems would want this
enabled, systems with slow interconnects would not.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Switch to using both register sets - side A and side B for display panning.
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6: (23 commits)
at_hdmac: Rework suspend_late()/resume_early()
PM: Reset transition_started at dpm_resume_noirq
PM: Update kerneldoc comments in drivers/base/power/main.c
PM: Add convenience macro to make switching to dev_pm_ops less error-prone
hp-wmi: Switch driver to dev_pm_ops
floppy: Switch driver to dev_pm_ops
PM: Trivial fixes
PM / Hibernate / Memory hotplug: Always use for_each_populated_zone()
PM/Hibernate: Do not try to allocate too much memory too hard (rev. 2)
PM/Hibernate: Do not release preallocated memory unnecessarily (rev. 2)
PM/Hibernate: Rework shrinking of memory
PM: Fix typo in label name s/Platofrm_finish/Platform_finish/
PM: Run-time PM platform device bus support
PM: Introduce core framework for run-time PM of I/O devices (rev. 17)
Driver Core: Make PM operations a const pointer
PM: Remove platform device suspend_late()/resume_early() V2
USB: Rework musb suspend()/resume_early()
I2C: Rework i2c-s3c2410 suspend_late()/resume() V2
I2C: Rework i2c-pxa suspend_late()/resume_early()
DMA: Rework txx9dmac suspend_late()/resume_early()
...
Fix trivial conflict in drivers/base/platform.c (due to same
constification patch being merged in both sides, along with some other
PM work in the PM branch)
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (52 commits)
Input: bcm5974 - silence uninitialized variables warnings
Input: wistron_btns - add keymap for AOpen 1557
Input: psmouse - use boolean type
Input: i8042 - use platform_driver_probe
Input: i8042 - use boolean type where it makes sense
Input: i8042 - try disabling and re-enabling AUX port at close
Input: pxa27x_keypad - allow modifying keymap from userspace
Input: sunkbd - fix formatting
Input: i8042 - bypass AUX IRQ delivery test on laptops
Input: wacom_w8001 - simplify querying logic
Input: atkbd - allow setting force-release bitmap via sysfs
Input: w90p910_keypad - move a dereference below a NULL test
Input: add twl4030_keypad driver
Input: matrix-keypad - add function to build device keymap
Input: tosakbd - fix cleaning up KEY_STROBEs after error
Input: joydev - validate axis/button maps before clobbering current ones
Input: xpad - add USB ID for the drumkit controller from Rock Band
Input: w90p910_keypad - rename driver name to match platform
Input: add new driver for Sentelic Finger Sensing Pad
Input: psmouse - allow defining read-only attributes
...
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (209 commits)
[SCSI] fix oops during scsi scanning
[SCSI] libsrp: fix memory leak in srp_ring_free()
[SCSI] libiscsi, bnx2i: make bound ep check common
[SCSI] libiscsi: add completion function for drivers that do not need pdu processing
[SCSI] scsi_dh_rdac: changes for rdac debug logging
[SCSI] scsi_dh_rdac: changes to collect the rdac debug information during the initialization
[SCSI] scsi_dh_rdac: move the init code from rdac_activate to rdac_bus_attach
[SCSI] sg: fix oops in the error path in sg_build_indirect()
[SCSI] mptsas : Bump version to 3.04.12
[SCSI] mptsas : FW event thread and scsi mid layer deadlock in SYNCHRONIZE CACHE command
[SCSI] mptsas : Send DID_NO_CONNECT for pending IOs of removed device
[SCSI] mptsas : PAE Kernel more than 4 GB kernel panic
[SCSI] mptsas : NULL pointer on big endian systems causing Expander not to tear off
[SCSI] mptsas : Sanity check for phyinfo is added
[SCSI] scsi_dh_rdac: Add support for Sun StorageTek ST2500, ST2510 and ST2530
[SCSI] pmcraid: PMC-Sierra MaxRAID driver to support 6Gb/s SAS RAID controller
[SCSI] qla2xxx: Update version number to 8.03.01-k6.
[SCSI] qla2xxx: Properly delete rports attached to a vport.
[SCSI] qla2xxx: Correct various NPIV issues.
[SCSI] qla2xxx: Correct qla2x00_eh_wait_on_command() to wait correctly.
...
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (257 commits)
[ARM] Update mach-types
ARM: 5636/1: Move vendor enum to AMBA include
ARM: Fix pfn_valid() for sparse memory
[ARM] orion5x: Add LaCie NAS 2Big Network support
[ARM] pxa/sharpsl_pm: zaurus c3000 aka spitz: fix resume
ARM: 5686/1: at91: Correct AC97 reset line in at91sam9263ek board
ARM: 5640/1: This patch modifies the support of AC97 on the at91sam9263 ek board
ARM: 5689/1: Update default config of HP Jornada 700-series machines
ARM: 5691/1: fix cache aliasing issues between kmap() and kmap_atomic() with highmem
ARM: 5688/1: ks8695_serial: disable_irq() lockup
ARM: 5687/1: fix an oops with highmem
ARM: 5684/1: Add nuc960 platform to w90x900
ARM: 5683/1: Add nuc950 platform to w90x900
ARM: 5682/1: Add cpu.c and dev.c and modify some files of w90p910 platform
ARM: 5626/1: add suspend/resume functions to amba-pl011 serial driver
ARM: 5625/1: fix hard coded 4K resource size in amba bus detection
MMC: MMCI: convert realview MMC to use gpiolib
ARM: 5685/1: Make MMCI driver compile without gpiolib
ARM: implement highpte
ARM: Show FIQ in /proc/interrupts on CONFIG_FIQ
...
Fix up trivial conflict in arch/arm/kernel/signal.c.
It was due to the TIF_NOTIFY_RESUME addition in commit d0420c83f ("KEYS:
Extend TIF_NOTIFY_RESUME to (almost) all architectures") and follow-ups.
* 'kvm-updates/2.6.32' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (202 commits)
MAINTAINERS: update KVM entry
KVM: correct error-handling code
KVM: fix compile warnings on s390
KVM: VMX: Check cpl before emulating debug register access
KVM: fix misreporting of coalesced interrupts by kvm tracer
KVM: x86: drop duplicate kvm_flush_remote_tlb calls
KVM: VMX: call vmx_load_host_state() only if msr is cached
KVM: VMX: Conditionally reload debug register 6
KVM: Use thread debug register storage instead of kvm specific data
KVM guest: do not batch pte updates from interrupt context
KVM: Fix coalesced interrupt reporting in IOAPIC
KVM guest: fix bogus wallclock physical address calculation
KVM: VMX: Fix cr8 exiting control clobbering by EPT
KVM: Optimize kvm_mmu_unprotect_page_virt() for tdp
KVM: Document KVM_CAP_IRQCHIP
KVM: Protect update_cr8_intercept() when running without an apic
KVM: VMX: Fix EPT with WP bit change during paging
KVM: Use kvm_{read,write}_guest_virt() to read and write segment descriptors
KVM: x86 emulator: Add adc and sbb missing decoder flags
KVM: Add missing #include
...
console_print() is an old legacy interface mostly unused in the entire
kernel tree. It's best to clean up its existing use and let developers
use their own implementation of it as they feel fit.
Signed-off-by: Anirban Sinha <asinha@zeugmasystems.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Early clock initialization sets up PLL/FLL values for optimal RF
behaviour. As this relationship is presently undocumented, we document
this in the script so the rationale is apparent.
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This patch prevents the USB1 interrupt from remaining asserted
immediately after re-boot or during a jump in to a secondary kernel.
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
After KYCR2 is set, udelay might become necessary if there are only a
small number of keys attached. This patch introduces an optional delay
through the platform data to address this problem.
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This tidies up the printks when running on SMP, and aids in debugging
when certain cores are unable to be scaled.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Setting monarch_cpu = -1 to let slaves frozen might not work, because
there might be slaves being late, not entered the rendezvous yet.
Such slaves might be caught in while (monarch_cpu == -1) loop.
Use kdump_in_progress instead of monarch_cpus to break INIT rendezvous
and let all slaves enter DIE_INIT_SLAVE_LEAVE smoothly.
And monarch no longer need to manage rendezvous if once kdump_in_progress
is set, catch the monarch in DIE_INIT_MONARCH_ENTER then.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Haren Myneni <hbabu@us.ibm.com>
Cc: kexec@lists.infradead.org
Acked-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
kdump_on_init
CPUs should be frozen if possible, otherwise it might hinder kdump.
So if there are CPUs not respond to IPI, try INIT to stop them.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Haren Myneni <hbabu@us.ibm.com>
Cc: kexec@lists.infradead.org
Acked-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Summary:
Asserting INIT might block kdump if the system is already going to
start kdump via panic.
Description:
INIT can interrupt anywhere in panic path, so it can interrupt in
middle of kdump kicked by panic. Therefore there is a race if kdump
is kicked concurrently, via Panic and via INIT.
INIT could fail to invoke kdump if the system is already going to
start kdump via panic. It could not restart kdump from INIT handler
if some of cpus are already playing dead with INIT masked. It also
means that INIT could block kdump's progress if no monarch is entered
in the INIT rendezvous.
Panic+INIT is a rare, but possible situation since it can be assumed
that the kernel or an internal agent decides to panic the unstable
system while another external agent decides to send an INIT to the
system at same time.
How to reproduce:
Assert INIT just after panic, before all other cpus have frozen
Expected results:
continue kdump invoked by panic, or restart kdump from INIT
Actual results:
might be hang, crashdump not retrieved
Proposed Fix:
This patch masks INIT first in panic path to take the initiative on
kdump, and reuse atomic value kdump_in_progress to make sure there is
only one initiator of kdump. All INITs asserted later should be used
only for freezing all other cpus.
This mask will be removed soon by rfi in relocate_kernel.S, before jump
into kdump kernel, after all cpus are frozen and no-op INIT handler is
registered. So if INIT was in the interval while it is masked, it will
pend on the system and will received just after the rfi, and handled by
the no-op handler.
If there was a MCA event while psr.mc is 1, in theory the event will
pend on the system and will received just after the rfi same as above.
MCA handler is unregistered here at the time, so received MCA will not
reach to OS_MCA and will result in warmboot by SAL.
Note that codes in this masked interval are relatively simpler than
that in MCA/INIT handler which also executed with the mask. So it can
be said that probability of error in this interval is supposed not so
higher than that in MCA/INIT handler.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Haren Myneni <hbabu@us.ibm.com>
Cc: kexec@lists.infradead.org
Acked-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Summary:
Asserting INIT on cpu going to be offline will result in unexpected
behavior. It will be a real problem in kdump cases where INIT might
be asserted to unstable APs going to be offline by returning to SAL.
Description:
Since psr.mc is cleared when bits in psr are set to SAL_PSR_BITS_TO_SET
in ia64_jump_to_sal(), there is a small window (~few msecs) that the
cpu can receive INIT even if the cpu enter there via INIT handler.
In this window we do restore of registers for SAL, so INIT asserted
here will not work properly.
It is hard to remove this window by masking INIT (i.e. setting psr.mc)
because we have to unmask it later in OS, because we have to use branch
instruction (br.ret, not rfi) to return SAL, due to OS_BOOT_RENDEZ to
SAL return convention.
I suppose this window will not be a real problem on cpu offline if we
can educate people not to push INIT button during hotplug operation.
However, only exception is a race in kdump and INIT. Now kdump returns
APs to SAL before processing dump, but the kernel might receive INIT at
that point in time. Such INIT might be asserted by kdump itself if an
AP doesn't react IPI soon and kdump decided to use INIT to stop the AP.
Or it might be asserted by operator or an external agent to start dump
on the unstable system.
Such panic+INIT or INIT+INIT cases should be rare, but it will be happy
if we can retrieve crashdump even in such cases.
How to reproduce:
panic+INIT or INIT+INIT, with kdump configured
Expected results:
crashdump is retrieved anyway
Actual results:
panic, hang etc. (unexpected)
Proposed fix
To avoid the window on the way to SAL, this patch stops returning APs
to SAL in case of kdump. In other words, this patch makes APs spin
in OS instead of spinning in SAL.
(* Note: What impact would be there? If a cpu is spinning in SAL,
the cpu is in BOOT_RENDEZ loop, as same as offlined cpu.
In theory if an INIT is asserted there, cpus in the BOOT_RENDEZ loop
should not invoke OS_INIT on it. So in either way, no matter where
the cpu is spinning actually in, once cpu starts spin and act as
"frozen," INIT on the cpu have no effects.
From another point of view, all debug information on the cpu should
have stored to memory before the cpu start to be frozen. So no more
action on the cpu is required.)
I confirmed that the kdump sometime hangs by concurrent INITs (another
INIT after an INIT), and it doesn't hang after applying this patch.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Haren Myneni <hbabu@us.ibm.com>
Cc: kexec@lists.infradead.org
Acked-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Summary:
MCA on the beginning of kdump/kexec kernel will result in unexpected
behavior because MCA handler for previous kernel is invoked on the
kdump kernel.
Description:
Once a cpu is passed to new kernel, all resources in previous kernel
should not be used from the cpu. Even the resources for MCA handler
are no exception. So we cannot handle MCAs and its machine check
errors during kernel transition, until new handler for new kernel is
registered with new resources ready for handling the MCA.
How to reproduce:
Assert MCA while kdump kernel is booting, before new MCA handler for
kdump kernel is registered.
Expected(Desirable) results:
No recovery, cancel kdump and reboot the system.
Actual results:
MCA handler for previous kernel is invoked on the kdump kernel.
=> panic, hang etc. (unexpected)
Proposed fix:
To avoid entering MCA handler from early stage of new kernel,
unregister the entry point from SAL before leave from current
kernel. Then SAL will make all MCAs to warmboot safely, without
invoking OS_MCA.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Haren Myneni <hbabu@us.ibm.com>
Cc: kexec@lists.infradead.org
Acked-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
kdump/kexec kernel
Summary:
Asserting INIT on the beginning of kdump/kexec kernel will result
in unexpected behavior because INIT handler for previous kernel is
invoked on new kernel.
Description:
In panic situation, we can receive INIT while kernel transition,
i.e. from beginning of panic to bootstrap of kdump kernel.
Since we initialize registers on leave from current kernel, no
longer monarch/slave handlers of current kernel in virtual mode are
called safely. (In fact system goes hang as far as I confirmed)
How to Reproduce:
Start kdump
# echo c > /proc/sysrq-trigger
Then assert INIT while kdump kernel is booting, before new INIT
handler for kdump kernel is registered.
Expected(Desirable) result:
kdump kernel boots without any problem, crashdump retrieved
Actual result:
INIT handler for previous kernel is invoked on kdump kernel
=> panic, hang etc. (unexpected)
Proposed fix:
We can unregister these init handlers from SAL before jumping into
new kernel, however then the INIT will fallback to default behavior,
result in warmboot by SAL (according to the SAL specification) and
we cannot retrieve the crashdump.
Therefore this patch introduces a NOP init handler and register it
to SAL before leave from current kernel, to start kdump safely by
preventing INITs from entering virtual mode and resulting in warmboot.
On the other hand, in case of kexec that not for kdump, it also
has same problem with INIT while kernel transition.
This patch handles this case differently, because for kexec
unregistering handlers will be preferred than registering NOP
handler, since the situation "no handlers registered" is usual
state for kernel's entry.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Haren Myneni <hbabu@us.ibm.com>
Cc: kexec@lists.infradead.org
Acked-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Summary:
INIT asserted on kdump kernel invokes INIT handler not only on a
cpu that running on the kdump kernel, but also BSP of the panicked
kernel, because the (badly) frozen BSP can be thawed by INIT.
Description:
The kdump_cpu_freeze() is called on cpus except one that initiates
panic and/or kdump, to stop/offline the cpu (on ia64, it means we
pass control of cpus to SAL, or put them in spinloop). Note that
CPU0(BSP) always go to spinloop, so if panic was happened on an AP,
there are at least 2cpus (= the AP and BSP) which not back to SAL.
On the spinning cpus, interrupts are disabled (rsm psr.i), but INIT
is still interruptible because psr.mc for mask them is not set unless
kdump_cpu_freeze() is not called from MCA/INIT context.
Therefore, assume that a panic was happened on an AP, kdump was
invoked, new INIT handlers for kdump kernel was registered and then
an INIT is asserted. From the viewpoint of SAL, there are 2 online
cpus, so INIT will be delivered to both of them. It likely means
that not only the AP (= a cpu executing kdump) enters INIT handler
which is newly registered, but also BSP (= another cpu spinning in
panicked kernel) enters the same INIT handler. Of course setting of
registers in BSP are still old (for panicked kernel), so what happen
with running handler with wrong setting will be extremely unexpected.
I believe this is not desirable behavior.
How to Reproduce:
Start kdump on one of APs (e.g. cpu1)
# taskset 0x2 echo c > /proc/sysrq-trigger
Then assert INIT after kdump kernel is booted, after new INIT handler
for kdump kernel is registered.
Expected results:
An INIT handler is invoked only on the AP.
Actual results:
An INIT handler is invoked on the AP and BSP.
Sample of results:
I got following console log by asserting INIT after prompt "root:/>".
It seems that two monarchs appeared by one INIT, and one panicked at
last. And it also seems that the panicked one supposed there were
4 online cpus and no one did rendezvous:
:
[ 0 %]dropping to initramfs shell
exiting this shell will reboot your system
root:/> Entered OS INIT handler. PSP=fff301a0 cpu=0 monarch=0
ia64_init_handler: Promoting cpu 0 to monarch.
Delaying for 5 seconds...
All OS INIT slaves have reached rendezvous
Processes interrupted by INIT - 0 (cpu 0 task 0xa000000100af0000)
:
<<snip>>
:
Entered OS INIT handler. PSP=fff301a0 cpu=0 monarch=1
Delaying for 5 seconds...
mlogbuf_finish: printing switched to urgent mode, MCA/INIT might be dodgy or fail.
OS INIT slave did not rendezvous on cpu 1 2 3
INIT swapper 0[0]: bugcheck! 0 [1]
:
<<snip>>
:
Kernel panic - not syncing: Attempted to kill the idle task!
Proposed fix:
To avoid this problem, this patch inserts ia64_set_psr_mc() to mask
INIT on cpus going to be frozen. This masking have no effect if the
kdump_cpu_freeze() is called from INIT handler when kdump_on_init == 1,
because psr.mc is already turned on to 1 before entering OS_INIT.
I confirmed that weird log like above are disappeared after applying
this patch.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Haren Myneni <hbabu@us.ibm.com>
Cc: kexec@lists.infradead.org
Acked-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
