deliverable/linux.git
12 years agoMerge branch 'tip/perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...
Ingo Molnar [Fri, 6 Jul 2012 09:12:17 +0000 (11:12 +0200)] 
Merge branch 'tip/perf/core' of git://git./linux/kernel/git/rostedt/linux-trace into perf/core

Pull tracing updates from Steve Rostedt.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
12 years agojump label: Remove static_branch()
Jason Baron [Thu, 28 Jun 2012 19:05:02 +0000 (15:05 -0400)] 
jump label: Remove static_branch()

Remove the obsolete static_branch() interface, since the supported interface
is now static_key_false()/true() - which is used by all in-tree code.

See commit:

  c5905afb0e ("static keys: Introduce 'struct static_key', static_key_true()/false()
  and static_key_slow_[inc|dec]()").

Signed-off-by: Jason Baron <jbaron@redhat.com>
Cc: rostedt@goodmis.org
Cc: mathieu.desnoyers@efficios.com
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/199332c47eef8005d5a5bf1018a80d25929a5746.1340909155.git.jbaron@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
12 years agotracepoint: Use static_key_false(), since static_branch() is deprecated
Jason Baron [Thu, 28 Jun 2012 19:04:57 +0000 (15:04 -0400)] 
tracepoint: Use static_key_false(), since static_branch() is deprecated

Convert the last user of static_branch() -> static_key_false().

Signed-off-by: Jason Baron <jbaron@redhat.com>
Cc: rostedt@goodmis.org
Cc: mathieu.desnoyers@efficios.com
Cc: a.p.zijlstra@chello.nl
Link: http://lkml.kernel.org/r/5fffcd40a6c063769badcdd74a7d90980500dbcb.1340909155.git.jbaron@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
12 years agoMerge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git...
Ingo Molnar [Fri, 6 Jul 2012 08:17:40 +0000 (10:17 +0200)] 
Merge tag 'perf-core-for-mingo' of git://git./linux/kernel/git/acme/linux into perf/core

perf/core improvements and fixes:

 - Preparatory patches to use hw events in PMU syntax, from Jiri Olsa

 - Remaining backport of trace-cmd's libparseevent, from Namhyung Kim

 - Fix libtraceevent 'clean' make target, from Namhyung Kim

 - Teach ctags about libtraceevent error codes, from Namhyung Kim

 - Fix libtraceevent dependency files usage, from Namhyung Kim

 - Support hex number pretty printing in libtraceevent, fixing
   kvm output, from Namhyung Kim

 - Kill some die() usage in libtraceevent, from Namhyung Kim

 - Improve support for hw breakpoints parsing/pretty printing/testing,
  from Jiri Olsa

 - Clarify perf bench option naming, from Hitoshi Mitake

 - Look for ".note" ELF notes too, used in the kernel vdso, from Jiri Olsa

 - Fix internal PMU list usage, removing leak, from Robert Richter

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
12 years agoperf/x86: Uncore filter support for SandyBridge-EP
Yan, Zheng [Wed, 4 Jul 2012 06:00:15 +0000 (14:00 +0800)] 
perf/x86: Uncore filter support for SandyBridge-EP

This patch adds C-Box and PCU filter support for SandyBridge-EP
uncore. We can filter C-Box events by thread/core ID and filter
PCU events by frequency/voltage.

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1341381616-12229-5-git-send-email-zheng.z.yan@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
12 years agoperf/x86: Detect number of instances of uncore CBox
Yan, Zheng [Wed, 4 Jul 2012 06:00:14 +0000 (14:00 +0800)] 
perf/x86: Detect number of instances of uncore CBox

The CBox manages the interface between the core and the LLC, so
the instances of uncore CBox is equal to number of cores.

Reported-by: Andrew Cooks <acooks@gmail.com>
Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1341381616-12229-4-git-send-email-zheng.z.yan@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
12 years agoperf/x86: Fix event constraint for SandyBridge-EP C-Box
Yan, Zheng [Thu, 28 Jun 2012 06:56:36 +0000 (14:56 +0800)] 
perf/x86: Fix event constraint for SandyBridge-EP C-Box

The constraint for C-Box event 0x1f should have overlap flag set.

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1340866596-22502-2-git-send-email-zheng.z.yan@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
12 years agoperf/x86: Use 0xff as pseudo code for fixed uncore event
Yan, Zheng [Wed, 27 Jun 2012 07:09:12 +0000 (15:09 +0800)] 
perf/x86: Use 0xff as pseudo code for fixed uncore event

Stephane Eranian suggestted using 0xff as pseudo code for fixed
uncore event and using the umask value to determine which of the
fixed events we want to map to. So far there is at most one fixed
counter in a uncore PMU. So just change the definition of
UNCORE_FIXED_EVENT to 0xff.

Suggested-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1340780953-21130-1-git-send-email-zheng.z.yan@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
12 years agoperf/x86: Save a few bytes in 'struct x86_pmu'
Peter Zijlstra [Tue, 26 Jun 2012 21:38:39 +0000 (23:38 +0200)] 
perf/x86: Save a few bytes in 'struct x86_pmu'

All these are basically boolean flags, use a bitfield to save a few
bytes.

Suggested-by: Borislav Petkov <bp@amd64.org>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-vsevd5g8lhcn129n3s7trl7r@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
12 years agoperf/x86: Add a microcode revision check for SNB-PEBS
Peter Zijlstra [Fri, 8 Jun 2012 12:50:50 +0000 (14:50 +0200)] 
perf/x86: Add a microcode revision check for SNB-PEBS

Recent Intel microcode resolved the SNB-PEBS issues, so conditionally
enable PEBS on SNB hardware depending on the microcode revision.

Thanks to Stephane for figuring out the various microcode revisions.

Suggested-by: Stephane Eranian <eranian@google.com>
Acked-by: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-v3672ziwh9damwqwh1uz3krm@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
12 years agoperf/x86: Improve debug output in check_hw_exists()
Robert Richter [Wed, 20 Jun 2012 18:46:36 +0000 (20:46 +0200)] 
perf/x86: Improve debug output in check_hw_exists()

It might be of interest which perfctr msr failed.

Signed-off-by: Robert Richter <robert.richter@amd.com>
[ added hunk to avoid GCC warn ]
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1340217996-2254-5-git-send-email-robert.richter@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
12 years agoperf/x86/amd: Unify AMD's generic and family 15h pmus
Robert Richter [Wed, 20 Jun 2012 18:46:35 +0000 (20:46 +0200)] 
perf/x86/amd: Unify AMD's generic and family 15h pmus

There is no need for keeping separate pmu structs. We can enable
amd_{get,put}_event_constraints() functions also for family 15h event.

The advantage is that there is only a single pmu struct for all AMD
cpus. This patch introduces functions to setup the pmu to enabe core
performance counters or counter constraints.

Also, cpuid checks are used instead of family checks where
possible. Thus, it enables the code independently of cpu families if
the feature flag is set.

Signed-off-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1340217996-2254-4-git-send-email-robert.richter@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
12 years agoperf/x86: Move Intel specific code to intel_pmu_init()
Robert Richter [Wed, 20 Jun 2012 18:46:34 +0000 (20:46 +0200)] 
perf/x86: Move Intel specific code to intel_pmu_init()

There is some Intel specific code in the generic x86 path. Move it to
intel_pmu_init().

Since p4 and p6 pmus don't have fixed counters we may skip the check
in case such a pmu is detected.

Signed-off-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1340217996-2254-3-git-send-email-robert.richter@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
12 years agoperf/x86: Rename Intel specific macros
Robert Richter [Wed, 20 Jun 2012 18:46:33 +0000 (20:46 +0200)] 
perf/x86: Rename Intel specific macros

There are macros that are Intel specific and not x86 generic. Rename
them into INTEL_*.

This patch removes X86_PMC_IDX_GENERIC and does:

 $ sed -i -e 's/X86_PMC_MAX_/INTEL_PMC_MAX_/g'           \
         arch/x86/include/asm/kvm_host.h                 \
         arch/x86/include/asm/perf_event.h               \
         arch/x86/kernel/cpu/perf_event.c                \
         arch/x86/kernel/cpu/perf_event_p4.c             \
         arch/x86/kvm/pmu.c
 $ sed -i -e 's/X86_PMC_IDX_FIXED/INTEL_PMC_IDX_FIXED/g' \
         arch/x86/include/asm/perf_event.h               \
         arch/x86/kernel/cpu/perf_event.c                \
         arch/x86/kernel/cpu/perf_event_intel.c          \
         arch/x86/kernel/cpu/perf_event_intel_ds.c       \
         arch/x86/kvm/pmu.c
 $ sed -i -e 's/X86_PMC_MSK_/INTEL_PMC_MSK_/g'           \
         arch/x86/include/asm/perf_event.h               \
         arch/x86/kernel/cpu/perf_event.c

Signed-off-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1340217996-2254-2-git-send-email-robert.richter@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
12 years agoMerge branch 'x86/microcode' into perf/core
Ingo Molnar [Thu, 5 Jul 2012 19:13:57 +0000 (21:13 +0200)] 
Merge branch 'x86/microcode' into perf/core

Merge this branch because we want to rely on the newer (and saner)
microcode loading and checking facilities.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
12 years agoMerge branch 'x86/cpu' into perf/core
Ingo Molnar [Thu, 5 Jul 2012 19:12:11 +0000 (21:12 +0200)] 
Merge branch 'x86/cpu' into perf/core

Merge this branch because we changed the wrmsr*_safe() API and there's
a conflict.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
12 years agoMerge branch 'perf/urgent' into perf/core
Ingo Molnar [Thu, 5 Jul 2012 19:10:23 +0000 (21:10 +0200)] 
Merge branch 'perf/urgent' into perf/core

Merge this branch to pick up a fixlet and to update to a more recent base.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
12 years agoperf/x86: Fix USER/KERNEL tagging of samples
Peter Zijlstra [Wed, 20 Jun 2012 09:11:38 +0000 (11:11 +0200)] 
perf/x86: Fix USER/KERNEL tagging of samples

Several perf interrupt handlers (PEBS,IBS,BTS) re-write regs->ip but
do not update the segment registers. So use an regs->ip based test
instead of an regs->cs/regs->flags based test.

Reported-and-tested-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/n/tip-xxrt0a1zronm1sm36obwc2vy@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
12 years agoMerge tag 'libtraceevent-core-for-acme' of git://git.kernel.org/pub/scm/linux/kernel...
Arnaldo Carvalho de Melo [Thu, 5 Jul 2012 15:16:32 +0000 (12:16 -0300)] 
Merge tag 'libtraceevent-core-for-acme' of git://git./linux/kernel/git/namhyung/linux-perf into perf/core

libtraceevent/core improvements

* Remaining backport of trace-cmd's libparseevent

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
12 years agoperf tools: Split event symbols arrays to hw and sw parts
Jiri Olsa [Tue, 3 Jul 2012 22:00:44 +0000 (00:00 +0200)] 
perf tools: Split event symbols arrays to hw and sw parts

It'll be convenient in upcoming patch to access hw event symbols
strings via enum perf_hw_id indexes. In order not to duplicate
the data, creating two separate arrays:

  event_symbols_hw for enum perf_hw_id events
  event_symbols_sw for enum perf_sw_ids events

Changing the current event list code to follow the change.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1341352848-11833-7-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
12 years agoperf tools: Split out PE_VALUE_SYM parsing token to SW and HW tokens
Jiri Olsa [Tue, 3 Jul 2012 22:00:43 +0000 (00:00 +0200)] 
perf tools: Split out PE_VALUE_SYM parsing token to SW and HW tokens

Spliting PE_VALUE_SYM token to PE_VALUE_SYM_HW and PE_VALUE_SYM_SW
tokens to separate hardware and software symbols.

This will be useful in upcomming patch where we want to be able to parse
out only hardware events.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1341352848-11833-6-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
12 years agoperf tools: Add empty rule for new line in event syntax parsing
Jiri Olsa [Tue, 3 Jul 2012 22:00:39 +0000 (00:00 +0200)] 
perf tools: Add empty rule for new line in event syntax parsing

The flex generator prints out each input character that is ignored by
lex rules.

Since the alias processing, we can have '\n' characters on input. We
need to assign empty rule to it, so it's not printed out.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1341352848-11833-2-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
12 years agoperf test: Use ARRAY_SIZE in parse events tests
Jiri Olsa [Tue, 3 Jul 2012 22:00:47 +0000 (00:00 +0200)] 
perf test: Use ARRAY_SIZE in parse events tests

Use ARRAY_SIZE instead of defining the sizes separately for each test
arrays.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1341352848-11833-10-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
12 years agotools lib traceevent: Cleanup realloc use
Namhyung Kim [Tue, 24 Apr 2012 01:29:44 +0000 (10:29 +0900)] 
tools lib traceevent: Cleanup realloc use

The if branch is completely unnecessary since 'realloc' can handle
NULL pointers for the first parameter.

This patch is just an adoption of Ulrich Drepper's recent patch on
perf tools.

Signed-off-by: Namhyung Kim <namhyung.kim@lge.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ulrich Drepper <drepper@gmail.com>
Link: http://lkml.kernel.org/r/1335230984-7613-1-git-send-email-namhyung.kim@lge.com
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
12 years agotools lib traceevent: Add missing break in make_bprint_args
Peter Huewe [Tue, 24 Apr 2012 21:19:40 +0000 (23:19 +0200)] 
tools lib traceevent: Add missing break in make_bprint_args

In the current code we assign vsize=8 and then fall through to the
default and assign vsize=1. -> probably the break is missing here,
otherwise we can remove the case.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/n/tip-3fxjy46h2tr9pl0spv7tems6@git.kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
12 years agotools lib traceevent: Check return value of arg_to_str()
Namhyung Kim [Mon, 23 Apr 2012 04:58:38 +0000 (13:58 +0900)] 
tools lib traceevent: Check return value of arg_to_str()

The arg_to_str() can fail so we should handle that case properly.

Signed-off-by: Namhyung Kim <namhyung.kim@lge.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David Ahern <dsahern@gmail.com>
Link: http://lkml.kernel.org/r/1335157118-14658-12-git-send-email-namhyung.kim@lge.com
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
12 years agotools lib traceevent: Check result of malloc() during reading token
Namhyung Kim [Mon, 23 Apr 2012 04:58:36 +0000 (13:58 +0900)] 
tools lib traceevent: Check result of malloc() during reading token

The malloc can fail so the return value should be checked.  For now,
just use malloc_or_die().

Signed-off-by: Namhyung Kim <namhyung.kim@lge.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David Ahern <dsahern@gmail.com>
Link: http://lkml.kernel.org/r/1335157118-14658-10-git-send-email-namhyung.kim@lge.com
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
12 years agotools lib traceevent: Fix some comments
Namhyung Kim [Mon, 23 Apr 2012 04:58:35 +0000 (13:58 +0900)] 
tools lib traceevent: Fix some comments

Update and add missing argument descriptions and fix some typo on
function comments.

Signed-off-by: Namhyung Kim <namhyung.kim@lge.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David Ahern <dsahern@gmail.com>
Link: http://lkml.kernel.org/r/1335157118-14658-9-git-send-email-namhyung.kim@lge.com
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
12 years agotools lib traceevent: Do not call add_event() again if allocation failed
Namhyung Kim [Mon, 23 Apr 2012 04:58:34 +0000 (13:58 +0900)] 
tools lib traceevent: Do not call add_event() again if allocation failed

When memory allocation for the field name is failed, do not goto
event_failed since we added the event already.

Signed-off-by: Namhyung Kim <namhyung.kim@lge.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David Ahern <dsahern@gmail.com>
Link: http://lkml.kernel.org/r/1335157118-14658-8-git-send-email-namhyung.kim@lge.com
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
12 years agotools lib traceevent: Pass string type argument to args
Namhyung Kim [Mon, 23 Apr 2012 04:58:33 +0000 (13:58 +0900)] 
tools lib traceevent: Pass string type argument to args

It seems PEVENT_FUNC_ARG_STRING missed passing the allocated string to
the args array.  Fix it.

Signed-off-by: Namhyung Kim <namhyung.kim@lge.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David Ahern <dsahern@gmail.com>
Link: http://lkml.kernel.org/r/1335157118-14658-7-git-send-email-namhyung.kim@lge.com
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
12 years agotools lib traceevent: Handle realloc() failure path
Namhyung Kim [Mon, 9 Apr 2012 02:54:33 +0000 (11:54 +0900)] 
tools lib traceevent: Handle realloc() failure path

The realloc can fail so that we should handle it properly.

Signed-off-by: Namhyung Kim <namhyung.kim@lge.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David Ahern <dsahern@gmail.com>
Link: http://lkml.kernel.org/r/1333940074-19052-7-git-send-email-namhyung.kim@lge.com
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
12 years agotools lib traceevent: Handle strdup failure cases
Namhyung Kim [Mon, 9 Apr 2012 02:54:31 +0000 (11:54 +0900)] 
tools lib traceevent: Handle strdup failure cases

There were some places didn't check return value of the strdup and had
unneeded/duplicated checks.  Fix it.

Signed-off-by: Namhyung Kim <namhyung.kim@lge.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David Ahern <dsahern@gmail.com>
Link: http://lkml.kernel.org/r/1333940074-19052-5-git-send-email-namhyung.kim@lge.com
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
12 years agotools lib traceevent: Introduce extend_token()
Namhyung Kim [Mon, 9 Apr 2012 02:54:30 +0000 (11:54 +0900)] 
tools lib traceevent: Introduce extend_token()

The __read_token() function has some duplicated code to handle
internal buffer overflow. Factor them out to new extend_token().

According to the man pages of realloc/free(3), they can handle NULL
pointer input so that it can be ended up to compact the code.  Also
handle error path correctly.

Signed-off-by: Namhyung Kim <namhyung.kim@lge.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David Ahern <dsahern@gmail.com>
Link: http://lkml.kernel.org/r/1333940074-19052-4-git-send-email-namhyung.kim@lge.com
[rostedt@goodmis.org: added some extra whitespace]
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
12 years agotools lib traceevent: Fix printk_cmp()
Namhyung Kim [Mon, 9 Apr 2012 02:54:29 +0000 (11:54 +0900)] 
tools lib traceevent: Fix printk_cmp()

The printk_cmp function should use printk_map instead of func_map.
Also rename the variables for consistency.

Signed-off-by: Namhyung Kim <namhyung.kim@lge.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David Ahern <dsahern@gmail.com>
Link: http://lkml.kernel.org/r/1333940074-19052-3-git-send-email-namhyung.kim@lge.com
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
12 years agotools lib traceevent: Fix trace_printk for long integers
Wolfgang Mauerer [Thu, 22 Mar 2012 10:18:21 +0000 (11:18 +0100)] 
tools lib traceevent: Fix trace_printk for long integers

On 32 bit systems, a conversion of the trace_printk format string
"%lu" -> "%llu" is intended (similar for %lx etc.) when a trace was
taken on a machine with 64 bit long integers. However, the current
code computes the bogus transformation "%lu" -> "%u".  Fix this.

Besides that, the transformation is only required on systems that don't
use 64 bits for long integers natively.

Signed-off-by: Wolfgang Mauerer <wolfgang.mauerer@siemens.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1332411501-8059-3-git-send-email-wolfgang.mauerer@siemens.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
12 years agotools lib traceevent: Fix %pM print format arg handling
Steven Rostedt [Mon, 9 Jan 2012 20:58:09 +0000 (15:58 -0500)] 
tools lib traceevent: Fix %pM print format arg handling

When %pM is used, the arg value must be a 6 byte character that will
be printed as a 6 byte MAC address. But the code does a break over the
main code which updates the current processing arg to point to the
next arg. If there are other print arguments after a %pM, they will be
off by one. The next arg will still be processing the %pM arg.

Reported-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/n/tip-q3g0n1espikynsdkpbi6ue6t@git.kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
12 years agotools lib traceevent: Add support to show migrate disable counter
Steven Rostedt [Tue, 22 May 2012 05:52:40 +0000 (14:52 +0900)] 
tools lib traceevent: Add support to show migrate disable counter

The RT kernel added a migrate disable counter in all events. Add
support to show this in the latency format.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/n/tip-l6ulxyda952g7kua4pfsh73k@git.kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
12 years agotools lib traceevent: Add support for "%.*s" in bprintk events
Steven Rostedt [Tue, 15 Nov 2011 23:47:48 +0000 (18:47 -0500)] 
tools lib traceevent: Add support for "%.*s" in bprintk events

The arg notation of '*' in bprintks is not handled by the parser.
Implement it so that they show up properly in the output and do not
kill the tracer from reporting events.

Reported-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/n/tip-t0ctq7t1xz3ud6wv4v886jou@git.kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
12 years agotools lib traceevent: Let filtering numbers by string use function names
Steven Rostedt [Tue, 22 May 2012 05:45:21 +0000 (14:45 +0900)] 
tools lib traceevent: Let filtering numbers by string use function names

As a pointer can be converted into a function name, let the filters
work with the function name as well as with the pointer number.  If
the comparison expects a string, then convert numbers into functions,
but only when the number is the same size as a long.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/n/tip-oxsa1qkr2eq7u8d7r0aapedu@git.kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
12 years agoMerge tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mturquette/linux
Linus Torvalds [Wed, 4 Jul 2012 01:06:49 +0000 (18:06 -0700)] 
Merge tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mturquette/linux

Pull fix to common clk framework from Michael Turquette:
 "The previous set of common clk fixes for -rc5 left an uninitialized
  int which could lead to bad array indexing when switching clock
  parents.  The issue is fixed with a trivial change to the code flow in
  __clk_set_parent."

* tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mturquette/linux:
  clk: fix parent validation in __clk_set_parent()

12 years agoMerge tag 'md-3.5-fixes' of git://neil.brown.name/md
Linus Torvalds [Wed, 4 Jul 2012 01:05:35 +0000 (18:05 -0700)] 
Merge tag 'md-3.5-fixes' of git://neil.brown.name/md

Pull raid10 build failure fix from NeilBrown:
 "I really shouldn't do important things late in the day.  It seems that
  I get careless."

* tag 'md-3.5-fixes' of git://neil.brown.name/md:
  md/raid10: fix careless build error

12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Wed, 4 Jul 2012 01:01:54 +0000 (18:01 -0700)] 
Merge git://git./linux/kernel/git/davem/net

Pull networking update from David Miller:

 1) Fix RX sequence number handling in mwifiex, from Stone Piao.

 2) Netfilter ipset mis-compares device names, fix from Florian
    Westphal.

 3) Fix route leak in ipv6 IPVS, from Eric Dumazet.

 4) NFS fixes.  Several buffer overflows in NCI layer from Dan
    Rosenberg, and release sock OOPS'er fix from Eric Dumazet.

 5) Fix WEP handling ath9k, we started using a bit the chip provides to
    indicate undecrypted packets but that bit turns out to be unreliable
    in certain configurations.  Fix from Felix Fietkau.

 6) Fix Kconfig dependency bug in wlcore, from Randy Dunlap.

 7) New USB IDs for rtlwifi driver from Larry Finger.

 8) Fix crashes in qmi_wwan usbnet driver when disconnecting, from Bjørn
    Mork.

 9) Gianfar driver programs coalescing settings properly in single queue
    mode, but does not do so in multi-queue mode.  Fix from Claudiu
    Manoil.

10) Missing module.h include in davinci_cpdma.c, from Daniel Mack.

11) Need dummy handler for IPSET_CMD_NONE otherwise we crash in ipset if
    we get this via nfnetlink, fix from Tomasz Bursztyka.

12) Missing RCU unlock in nfnetlink error path, also from Tomasz.

13) Fix divide by zero in igbvf when the user tries to set an RX
    coalescing value of 0 usecs, from Mitch A Williams.

14) We can process SCTP sacks for the wrong transport, oops.  Fix from
    Neil Horman.

15) Remove hw IP payload checksumming from e1000e driver.  This has zery
    value in our stack, and turning it on creates a very unintuitive
    restriction for users when using jumbo MTUs.

    Specifically, when IP payload checksums are on you cannot use both
    receive hashing offload and jumbo MTU.  Fix from Bruce Allan.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (27 commits)
  e1000e: remove use of IP payload checksum
  sctp: be more restrictive in transport selection on bundled sacks
  igbvf: fix divide by zero
  netfilter: nfnetlink: fix missing rcu_read_unlock in nfnetlink_rcv_msg
  netfilter: ipset: fix crash if IPSET_CMD_NONE command is sent
  davinci_cpdma: include linux/module.h
  gianfar: Fix RXICr/TXICr programming for multi-queue mode
  net: Downgrade CAP_SYS_MODULE deprecated message from error to warning.
  net: qmi_wwan: fix Oops while disconnecting
  mwifiex: fix memory leak associated with IE manamgement
  ath9k: fix panic caused by returning a descriptor we have queued for reuse
  mac80211: correct behaviour on unrecognised action frames
  ath9k: enable serialize_regmode for non-PCIE AR9287
  rtlwifi: rtl8192cu: New USB IDs
  NFC: Return from rawsock_release when sk is NULL
  iwlwifi: fix activating inactive stations
  wlcore: drop INET dependency
  ath9k: fix dynamic WEP related regression
  NFC: Prevent multiple buffer overflows in NCI
  netfilter: update location of my trees
  ...

12 years agomd/raid10: fix careless build error
NeilBrown [Tue, 3 Jul 2012 23:35:35 +0000 (09:35 +1000)] 
md/raid10: fix careless build error

build error introduced by commit b357f04a67c2aeee8

That function doesn't get extra args until a later patch.  Bother.

Reported-by: Fengguang Wu <wfg@linux.intel.com>
Reported-by: Simon Kirby <sim@hostway.ca>
Reported-by: Tobias Klausmann <tobias.johannes.klausmann@mni.thm.de>
Signed-off-by: NeilBrown <neilb@suse.de>
12 years agofloppy: cancel any pending fd_timeouts before adding a new one
Linus Torvalds [Tue, 3 Jul 2012 22:51:22 +0000 (15:51 -0700)] 
floppy: cancel any pending fd_timeouts before adding a new one

In commit 070ad7e793dc ("floppy: convert to delayed work and
single-thread wq") the 'fd_timeout' timer was converted to a delayed
work.  However, the "del_timer(&fd_timeout)" was lost in the process,
and any previous pending timeouts would stay active when we then
re-queued the timeout.

This resulted in the floppy probe sequence having a (stale) 20s timeout
rather than the intended 3s timeout, and thus made booting with the
floppy driver (but no actual floppy controller) take much longer than it
should.

Of course, there's little reason for most people to compile the floppy
driver into the kernel at all, which is why most people never noticed.

Canceling the delayed work where we used to do the del_timer() fixes the
issue, and makes the floppy probing use the proper new timeout instead.
The three second timeout is still very wasteful, but better than the 20s
one.

Reported-and-tested-by: Andi Kleen <ak@linux.intel.com>
Reported-and-tested-by: Calvin Walton <calvin.walton@kepstin.ca>
Cc: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-block
Linus Torvalds [Tue, 3 Jul 2012 22:45:10 +0000 (15:45 -0700)] 
Merge branch 'for-linus' of git://git.kernel.dk/linux-block

Pull block bits from Jens Axboe:
 "As vacation is coming up, thought I'd better get rid of my pending
  changes in my for-linus branch for this iteration.  It contains:

   - Two patches for mtip32xx.  Killing a non-compliant sysfs interface
     and moving it to debugfs, where it belongs.

   - A few patches from Asias.  Two legit bug fixes, and one killing an
     interface that is no longer in use.

   - A patch from Jan, making the annoying partition ioctl warning a bit
     less annoying, by restricting it to !CAP_SYS_RAWIO only.

   - Three bug fixes for drbd from Lars Ellenberg.

   - A fix for an old regression for umem, it hasn't really worked since
     the plugging scheme was changed in 3.0.

   - A few fixes from Tejun.

   - A splice fix from Eric Dumazet, fixing an issue with pipe
     resizing."

* 'for-linus' of git://git.kernel.dk/linux-block:
  scsi: Silence unnecessary warnings about ioctl to partition
  block: Drop dead function blk_abort_queue()
  block: Mitigate lock unbalance caused by lock switching
  block: Avoid missed wakeup in request waitqueue
  umem: fix up unplugging
  splice: fix racy pipe->buffers uses
  drbd: fix null pointer dereference with on-congestion policy when diskless
  drbd: fix list corruption by failing but already aborted reads
  drbd: fix access of unallocated pages and kernel panic
  xen/blkfront: Add WARN to deal with misbehaving backends.
  blkcg: drop local variable @q from blkg_destroy()
  mtip32xx: Create debugfs entries for troubleshooting
  mtip32xx: Remove 'registers' and 'flags' from sysfs
  blkcg: fix blkg_alloc() failure path
  block: blkcg_policy_cfq shouldn't be used if !CONFIG_CFQ_GROUP_IOSCHED
  block: fix return value on cfq_init() failure
  mtip32xx: Remove version.h header file inclusion
  xen/blkback: Copy id field when doing BLKIF_DISCARD.

12 years agoclk: fix parent validation in __clk_set_parent()
Rajendra Nayak [Tue, 3 Jul 2012 06:41:41 +0000 (12:11 +0530)] 
clk: fix parent validation in __clk_set_parent()

The below commit introduced a bug in __clk_set_parent()
which could cause it to *skip* the parent validation
which makes sure the parent passed to the api is a valid
one.

    commit 7975059db572eb47f0fb272a62afeae272a4b209
    Author: Rajendra Nayak <rnayak@ti.com>
    Date:   Wed Jun 6 14:41:31 2012 +0530

        clk: Allow late cache allocation for clk->parents

This was identified by the following compiler warning..

    drivers/clk/clk.c: In function '__clk_set_parent':
    drivers/clk/clk.c:1083:5: warning: 'i' may be used uninitialized in this function [-Wuninitialized]

.. as reported by Marc Kleine-Budde.

There were various options discussed on how to fix this, one
being initing 'i' to clk->num_parents, but the below approach
was found to be more appropriate as it also makes the 'parent
validation' code simpler to read.

Reported-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Cc: stable@kernel.org
12 years agoMerge tag 'sound-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Linus Torvalds [Tue, 3 Jul 2012 18:10:18 +0000 (11:10 -0700)] 
Merge tag 'sound-3.5' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Just a few driver-specific fixes for ASoC and HD-audio."

* tag 'sound-3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - Fix no sound from ALC662 after Windows reboot
  ASoC: tlv320aic3x: Fix codec pll configure bug
  ASoC: wm2200: Add missing BCLK rate

12 years agoMerge tag 'dm-3.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm
Linus Torvalds [Tue, 3 Jul 2012 18:08:16 +0000 (11:08 -0700)] 
Merge tag 'dm-3.5-fixes' of git://git./linux/kernel/git/agk/linux-dm

Pull device-mapper fixes from Alasdair G Kergon:
 "Four minor thin provisioning fixes and correct and update dm-verity
  documentation."

* tag 'dm-3.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm:
  dm: verity fix documentation
  dm persistent data: fix allocation failure in space map checker init
  dm persistent data: handle space map checker creation failure
  dm persistent data: fix shadow_info_leak on dm_tm_destroy
  dm thin: commit metadata before creating metadata snapshot

12 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Tue, 3 Jul 2012 17:59:37 +0000 (10:59 -0700)] 
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "One regression fix, two radeon fixes (one for an oops), and an i915
  fix to unload framebuffers earlier.

  We originally were going to leave the i915 fix until -next, but grub2
  in some situations causes vesafb/efifb to be loaded now, and this
  causes big slowdowns, and I have reports in rawhide I'd like to have
  fixed."

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/i915: kick any firmware framebuffers before claiming the gtt
  drm: edid: Don't add inferred modes with higher resolution
  drm/radeon: fix rare segfault
  drm/radeon: fix VM page table setup on SI

12 years agoMerge tag 'md-3.5-fixes' of git://neil.brown.name/md
Linus Torvalds [Tue, 3 Jul 2012 17:40:43 +0000 (10:40 -0700)] 
Merge tag 'md-3.5-fixes' of git://neil.brown.name/md

Pull md fixes from NeilBrown:
 "md: collection of bug fixes for 3.5

  You go away for 2 weeks vacation and what do you get when you come
  back? Piles of bugs :-)

  Some found by inspection, some by testing, some during use in the
  field, and some while developing for the next window..."

* tag 'md-3.5-fixes' of git://neil.brown.name/md:
  md: fix up plugging (again).
  md: support re-add of recovering devices.
  md/raid1: fix bug in read_balance introduced by hot-replace
  raid5: delayed stripe fix
  md/raid456: When read error cannot be recovered, record bad block
  md: make 'name' arg to md_register_thread non-optional.
  md/raid10: fix failure when trying to repair a read error.
  md/raid5: fix refcount problem when blocked_rdev is set.
  md:Add blk_plug in sync_thread.
  md/raid5: In ops_run_io, inc nr_pending before calling md_wait_for_blocked_rdev
  md/raid5: Do not add data_offset before call to is_badblock
  md/raid5: prefer replacing failed devices over want-replacement devices.
  md/raid10: Don't try to recovery unmatched (and unused) chunks.

12 years agoMerge branch 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Tue, 3 Jul 2012 17:39:40 +0000 (10:39 -0700)] 
Merge branch 'for-linus2' of git://git./linux/kernel/git/jmorris/linux-security

Pull security layer fixes from James Morris.

A documentation update, and a nommu build fix.

* 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  security: Fix nommu build.
  security: document no_new_privs

12 years agodm: verity fix documentation
Milan Broz [Tue, 3 Jul 2012 11:55:41 +0000 (12:55 +0100)] 
dm: verity fix documentation

Veritysetup is now part of cryptsetup package.
Remove on-disk header description (which is not parsed in kernel)
and point users to cryptsetup where it the format is documented.
Mention units for block size paramaters.
Fix target line specification and dmsetup parameters.

Signed-off-by: Milan Broz <mbroz@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
12 years agodm persistent data: fix allocation failure in space map checker init
Mike Snitzer [Tue, 3 Jul 2012 11:55:37 +0000 (12:55 +0100)] 
dm persistent data: fix allocation failure in space map checker init

If CONFIG_DM_DEBUG_SPACE_MAPS is enabled and memory is fragmented and a
sufficiently-large metadata device is used in a thin pool then the space
map checker will fail to allocate the memory it requires.

Switch from kmalloc to vmalloc to allow larger virtually contiguous
allocations for the space map checker's internal count arrays.

Reported-by: Vivek Goyal <vgoyal@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
12 years agodm persistent data: handle space map checker creation failure
Mike Snitzer [Tue, 3 Jul 2012 11:55:35 +0000 (12:55 +0100)] 
dm persistent data: handle space map checker creation failure

If CONFIG_DM_DEBUG_SPACE_MAPS is enabled and dm_sm_checker_create()
fails, dm_tm_create_internal() would still return success even though it
cleaned up all resources it was supposed to have created.  This will
lead to a kernel crash:

general protection fault: 0000 [#1] SMP DEBUG_PAGEALLOC
...
RIP: 0010:[<ffffffff81593659>]  [<ffffffff81593659>] dm_bufio_get_block_size+0x9/0x20
Call Trace:
  [<ffffffff81599bae>] dm_bm_block_size+0xe/0x10
  [<ffffffff8159b8b8>] sm_ll_init+0x78/0xd0
  [<ffffffff8159c1a6>] sm_ll_new_disk+0x16/0xa0
  [<ffffffff8159c98e>] dm_sm_disk_create+0xfe/0x160
  [<ffffffff815abf6e>] dm_pool_metadata_open+0x16e/0x6a0
  [<ffffffff815aa010>] pool_ctr+0x3f0/0x900
  [<ffffffff8158d565>] dm_table_add_target+0x195/0x450
  [<ffffffff815904c4>] table_load+0xe4/0x330
  [<ffffffff815917ea>] ctl_ioctl+0x15a/0x2c0
  [<ffffffff81591963>] dm_ctl_ioctl+0x13/0x20
  [<ffffffff8116a4f8>] do_vfs_ioctl+0x98/0x560
  [<ffffffff8116aa51>] sys_ioctl+0x91/0xa0
  [<ffffffff81869f52>] system_call_fastpath+0x16/0x1b

Fix the space map checker code to return an appropriate ERR_PTR and have
dm_sm_disk_create() and dm_tm_create_internal() check for it with
IS_ERR.

Reported-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
12 years agodm persistent data: fix shadow_info_leak on dm_tm_destroy
Mike Snitzer [Tue, 3 Jul 2012 11:55:33 +0000 (12:55 +0100)] 
dm persistent data: fix shadow_info_leak on dm_tm_destroy

Cleanup the shadow table before destroying the transaction manager.

Reference: leak was identified with kmemleak when running
test_discard_random_sectors in the thinp-test-suite.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
12 years agodm thin: commit metadata before creating metadata snapshot
Joe Thornber [Tue, 3 Jul 2012 11:55:31 +0000 (12:55 +0100)] 
dm thin: commit metadata before creating metadata snapshot

Userland sometimes sees a corrupt metadata block if metadata is changing
rapidly when a metadata snapshot is reserved for userland,  To make the
problem go away, commit before we take the metadata snapshot (which is a
sensible thing to do anyway).

The checksums mean userland spots this corruption immediately so there's
no risk of acting on incorrect data.  No corruption exists from the
kernel's point of view, and thin_check passes after pool shutdown.

I believe this is to do with shared blocks at the first level of the
{device, mapping} btree.  Prior to the metadata-snap support no sharing
at this level was possible, so this patch is only required after commit
cc8394d86f045b86ff303d3c9e4ce47d97148951 ("dm thin: provide userspace
access to pool metadata").

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
12 years agosecurity: Fix nommu build.
Paul Mundt [Mon, 2 Jul 2012 05:34:11 +0000 (14:34 +0900)] 
security: Fix nommu build.

The security + nommu configuration presently blows up with an undefined
reference to BDI_CAP_EXEC_MAP:

security/security.c: In function 'mmap_prot':
security/security.c:687:36: error: dereferencing pointer to incomplete type
security/security.c:688:16: error: 'BDI_CAP_EXEC_MAP' undeclared (first use in this function)
security/security.c:688:16: note: each undeclared identifier is reported only once for each function it appears in

include backing-dev.h directly to fix it up.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: James Morris <james.l.morris@oracle.com>
12 years agodrm/i915: kick any firmware framebuffers before claiming the gtt
Daniel Vetter [Sun, 1 Jul 2012 15:09:42 +0000 (17:09 +0200)] 
drm/i915: kick any firmware framebuffers before claiming the gtt

Especially vesafb likes to map everything as uc- (yikes), and if that
mapping hangs around still while we try to map the gtt as wc the
kernel will downgrade our request to uc-, resulting in abyssal
performance.

Unfortunately we can't do this as early as readon does (i.e. as the
first thing we do when initializing the hw) because our fb/mmio space
region moves around on a per-gen basis. So I've had to move it below
the gtt initialization, but that seems to work, too. The important
thing is that we do this before we set up the gtt wc mapping.

Now an altogether different question is why people compile their
kernels with vesafb enabled, but I guess making things just work isn't
bad per se ...

v2:
- s/radeondrmfb/inteldrmfb/
- fix up error handling

v3: Kill #ifdef X86, this is Intel after all. Noticed by Ben Widawsky.

v4: Jani Nikula complained about the pointless bool primary
initialization.

v5: Don't oops if we can't allocate, noticed by Chris Wilson.

v6: Resolve conflicts with agp rework and fixup whitespace.

This is commit e188719a2891f01b3100d in drm-next.

Backport to 3.5 -fixes queue requested by Dave Airlie - due to grub
using vesa on fedora their initrd seems to load vesafb before loading
the real kms driver. So tons more people actually experience a
dead-slow gpu. Hence also the Cc: stable.

Cc: stable@vger.kernel.org
Reported-and-tested-by: "Kilarski, Bernard R" <bernard.r.kilarski@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agodrm: edid: Don't add inferred modes with higher resolution
Takashi Iwai [Tue, 3 Jul 2012 09:22:11 +0000 (11:22 +0200)] 
drm: edid: Don't add inferred modes with higher resolution

When a monitor EDID doesn't give the preferred bit, driver assumes
that the mode with the higest resolution and rate is the preferred
mode.  Meanwhile the recent changes for allowing more modes in the
GFT/CVT ranges give actually more modes, and some modes may be over
the native size.  Thus such a mode would be picked up as the preferred
mode although it's no native resolution.

For avoiding such a problem, this patch limits the addition of
inferred modes by checking not to be greater than other modes.
Also, it checks the duplicated mode entry at the same time.

Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agodrm/radeon: fix rare segfault
Jerome Glisse [Mon, 2 Jul 2012 16:40:54 +0000 (12:40 -0400)] 
drm/radeon: fix rare segfault

In gem idle/busy ioctl the radeon object was derefenced after
drm_gem_object_unreference_unlocked which in case the object
have been destroyed lead to use of a possibly free pointer with
possibly wrong data.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agomd: fix up plugging (again).
NeilBrown [Tue, 3 Jul 2012 07:45:31 +0000 (17:45 +1000)] 
md: fix up plugging (again).

The value returned by "mddev_check_plug" is only valid until the
next 'schedule' as that will unplug things.  This could happen at any
call to mempool_alloc.
So just calling mddev_check_plug at the start doesn't really make
sense.

So call it just before, or just after, queuing things for the thread.
As the action that happens at unplug is to wake the thread, this makes
lots of sense.
If we cannot add a plug (which requires a small GFP_ATOMIC alloc) we
wake thread immediately.

RAID5 is a bit different.  Requests are queued for the thread and the
thread is woken by release_stripe.  So we don't need to wake the
thread on failure.
However the thread doesn't perform certain actions when there is any
active plug, so it is important to install a plug before waking the
thread.  So for RAID5 we install the plug *before* queuing the request
and waking the thread.

Without this patch it is possible for raid1 or raid10 to queue a
request without then waking the thread, resulting in the array locking
up.

Also change raid10 to only flush_pending_write when there are not
active plugs, just like raid1.

This patch is suitable for 3.0 or later.  I plan to submit it to
-stable, but I'll like to let it spend a few weeks in mainline
first to be sure it is completely safe.

Signed-off-by: NeilBrown <neilb@suse.de>
12 years agomd: support re-add of recovering devices.
NeilBrown [Tue, 3 Jul 2012 05:59:06 +0000 (15:59 +1000)] 
md: support re-add of recovering devices.

We currently only allow a device to be re-added if it appear to be
in-sync.  This is overly restrictive as it may be desirable to re-add
a device that is in the middle of recovery.

So remove the test for "InSync" - the test on rdev->raid_disk is
sufficient to ensure that the re-add will succeed.

Reported-by: Alexander Lyakas <alex.bolshoy@gmail.com>
Tested-by: Alexander Lyakas <alex.bolshoy@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
12 years agomd/raid1: fix bug in read_balance introduced by hot-replace
NeilBrown [Tue, 3 Jul 2012 05:58:42 +0000 (15:58 +1000)] 
md/raid1: fix bug in read_balance introduced by hot-replace

When we added hot_replace we doubled the number of devices
that could be in a RAID1 array.  So we doubled how far read_balance
would search.  Unfortunately we didn't double the point at which
it looped back to the beginning - so it effectively loops over
all non-replacement disks twice.
This doesn't cause bad behaviour, but it pointless and means we
never read from replacement devices.

Signed-off-by: NeilBrown <neilb@suse.de>
12 years agoraid5: delayed stripe fix
Shaohua Li [Tue, 3 Jul 2012 05:57:19 +0000 (15:57 +1000)] 
raid5: delayed stripe fix

There isn't locking setting STRIPE_DELAYED and STRIPE_PREREAD_ACTIVE bits, but
the two bits have relationship. A delayed stripe can be moved to hold list only
when preread active stripe count is below IO_THRESHOLD. If a stripe has both
the bits set, such stripe will be in delayed list and preread count not 0,
which will make such stripe never leave delayed list.

Signed-off-by: Shaohua Li <shli@fusionio.com>
Signed-off-by: NeilBrown <neilb@suse.de>
12 years agomd/raid456: When read error cannot be recovered, record bad block
majianpeng [Tue, 3 Jul 2012 05:57:02 +0000 (15:57 +1000)] 
md/raid456: When read error cannot be recovered, record bad block

We may not be able to fix a bad block if:
 - the array is degraded
 - the over-write fails.

In these cases we currently eject the device, but we should
record a bad block if possible.

Signed-off-by: majianpeng <majianpeng@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
12 years agomd: make 'name' arg to md_register_thread non-optional.
NeilBrown [Tue, 3 Jul 2012 05:56:52 +0000 (15:56 +1000)] 
md: make 'name' arg to md_register_thread non-optional.

Having the 'name' arg optional and defaulting to the current
personality name is no necessary and leads to errors, as when
changing the level of an array we can end up using the
name of the old level instead of the new one.

So make it non-optional and always explicitly pass the name
of the level that the array will be.

Reported-by: majianpeng <majianpeng@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
12 years agomd/raid10: fix failure when trying to repair a read error.
NeilBrown [Tue, 3 Jul 2012 05:55:33 +0000 (15:55 +1000)] 
md/raid10: fix failure when trying to repair a read error.

commit 58c54fcca3bac5bf9290cfed31c76e4c4bfbabaf
     md/raid10: handle further errors during fix_read_error better.

in 3.1 added "r10_sync_page_io" which takes an IO size in sectors.
But we were passing the IO size in bytes!!!
This resulting in bio_add_page failing, and empty request being sent
down, and a consequent BUG_ON in scsi_lib.

[fix missing space in error message at same time]

This fix is suitable for 3.1.y and later.

Cc: stable@vger.kernel.org
Reported-by: Christian Balzer <chibi@gol.com>
Signed-off-by: NeilBrown <neilb@suse.de>
12 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Linus Torvalds [Tue, 3 Jul 2012 02:52:25 +0000 (19:52 -0700)] 
Merge branch 'merge' of git://git./linux/kernel/git/benh/powerpc

Pull a couple more powerpc fixes from Benjamin Herrenschmidt:
 "Here are two more fixes that I "missed" when scrubbing patchwork last
  week which are worth still having in 3.5."

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc/kvm: sldi should be sld
  powerpc/xmon: Use cpumask iterator to avoid warning

12 years agosecurity: document no_new_privs
Andy Lutomirski [Mon, 2 Jul 2012 21:03:58 +0000 (14:03 -0700)] 
security: document no_new_privs

Document no_new_privs.

Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: James Morris <james.l.morris@oracle.com>
12 years agomd/raid5: fix refcount problem when blocked_rdev is set.
NeilBrown [Tue, 3 Jul 2012 02:13:29 +0000 (12:13 +1000)] 
md/raid5: fix refcount problem when blocked_rdev is set.

commit 43220aa0f22cd3ce5b30246d50ccd696d119edea
    md/raid5: fix a hang on device failure.

fixed a hang, but introduced a refcounting in-balance so
that if the presence of bad-blocks ever caused an rdev to
be 'blocked' we would increment the refcount on the rdev and
never decrement it.

So added the needed rdev_dec_pending when md_wait_for_blocked_rdev
is not called.

Reported-by: majianpeng <majianpeng@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
12 years agomd:Add blk_plug in sync_thread.
majianpeng [Tue, 3 Jul 2012 02:12:26 +0000 (12:12 +1000)] 
md:Add blk_plug in sync_thread.

Add blk_plug in sync_thread will increase the performance of sync.
Because sync_thread did not blk_plug,so when raid sync, the bio merge
not well.

Testing environment:
SATA controller: Intel Corporation 82801JI (ICH10 Family) SATA AHCI
Controller.
OS:Linux xxx 3.5.0-rc2+ #340 SMP Tue Jun 12 09:00:25 CST 2012
x86_64 x86_64 x86_64 GNU/Linux.
RAID5: four ST31000524NS disk.

Without blk_plug:recovery speed about 63M/Sec;
Add blk_plug:recovery speed about 120M/Sec.

Using blktrace:
blktrace -d /dev/sdb -w 60  -o -|blkparse -i -

without blk_plug:
Total (8,16):
 Reads Queued:      309811,     1239MiB  Writes Queued:           0,        0KiB
 Read Dispatches:   283583,     1189MiB  Write Dispatches:        0,        0KiB
 Reads Requeued:         0  Writes Requeued:         0
 Reads Completed:   273351,     1149MiB  Writes Completed:        0,        0KiB
 Read Merges:        23533,    94132KiB  Write Merges:            0,        0KiB
 IO unplugs:             0          Timer unplugs:           0

add blk_plug:
Total (8,16):
 Reads Queued:      428697,     1714MiB  Writes Queued:           0,        0KiB
 Read Dispatches:     3954,     1714MiB  Write Dispatches:        0,        0KiB
 Reads Requeued:         0  Writes Requeued:         0
 Reads Completed:     3956,     1715MiB  Writes Completed:        0,        0KiB
 Read Merges:       424743,     1698MiB  Write Merges:            0,        0KiB
 IO unplugs:             0          Timer unplugs:        3384

The ratio of merge will be markedly increased.

Signed-off-by: majianpeng <majianpeng@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
12 years agomd/raid5: In ops_run_io, inc nr_pending before calling md_wait_for_blocked_rdev
majianpeng [Tue, 3 Jul 2012 02:11:54 +0000 (12:11 +1000)] 
md/raid5: In ops_run_io, inc nr_pending before calling md_wait_for_blocked_rdev

In ops_run_io(), the call to md_wait_for_blocked_rdev will decrement
nr_pending so we lose the reference we hold on the rdev.
So atomic_inc it first to maintain the reference.

This bug was introduced by commit  73e92e51b7969ef5477d
    md/raid5.  Don't write to known bad block on doubtful devices.

which appeared in 3.0, so patch is suitable for stable kernels since
then.

Cc: stable@vger.kernel.org
Signed-off-by: majianpeng <majianpeng@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
12 years agomd/raid5: Do not add data_offset before call to is_badblock
majianpeng [Tue, 12 Jun 2012 00:31:10 +0000 (08:31 +0800)] 
md/raid5: Do not add data_offset before call to is_badblock

In chunk_aligned_read() we are adding data_offset before calling
is_badblock.  But is_badblock also adds data_offset, so that is bad.

So move the addition of data_offset to after the call to
is_badblock.

This bug was introduced by commit 31c176ecdf3563140e639
     md/raid5: avoid reading from known bad blocks.
which first appeared in 3.0.  So that patch is suitable for any
-stable kernel from 3.0.y onwards.  However it will need minor
revision for most of those (as the comment didn't appear until
recently).

Cc: stable@vger.kernel.org
Signed-off-by: majianpeng <majianpeng@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
12 years agomd/raid5: prefer replacing failed devices over want-replacement devices.
NeilBrown [Tue, 3 Jul 2012 01:46:53 +0000 (11:46 +1000)] 
md/raid5: prefer replacing failed devices over want-replacement devices.

If a RAID5 has both a failed device and a device marked as
'WantReplacement', then we should preferentially replace the failed
device.
However the current code replaces whichever is found first.
So split into 2 loops, check fail failed/missing first, and only check
for WantReplacement if nothing is failed or missing.

Reported-by: majianpeng <majianpeng@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
12 years agomd/raid10: Don't try to recovery unmatched (and unused) chunks.
NeilBrown [Tue, 3 Jul 2012 00:37:30 +0000 (10:37 +1000)] 
md/raid10: Don't try to recovery unmatched (and unused) chunks.

If a RAID10 has an odd number of chunks - as might happen when there
are an odd number of devices - the last chunk has no pair and so is
not mirrored.  We don't store data there, but when recovering the last
device in an array we retry to recover that last chunk from a
non-existent location.  This results in an error, and the recovery
aborts.

When we get to that last chunk we should just stop - there is nothing
more to do anyway.

This bug has been present since the introduction of RAID10, so the
patch is appropriate for any -stable kernel.

Cc: stable@vger.kernel.org
Reported-by: Christian Balzer <chibi@gol.com>
Tested-by: Christian Balzer <chibi@gol.com>
Signed-off-by: NeilBrown <neilb@suse.de>
12 years agoperf bench: Fix confused variable namings and descriptions in mem subsystem
Hitoshi Mitake [Mon, 2 Jul 2012 13:46:17 +0000 (22:46 +0900)] 
perf bench: Fix confused variable namings and descriptions in mem subsystem

As Namhyung Kim pointed, there are confused namings and descriptions of words
"cycle" and "clock" in mem-memset.c and mem-memcpy.c.

With the option "-c" (or "--clock", now renamed as "--cycle"), mem subsystem
measures cost of memset() and memcpy() with cpu-cycles event.

But current mem subsystem source code contains lots of confused variable
namings and descriptions with "clock" (e.g. the variable use_clock). This is a
very bad style because there is another software event named "cpu-clock". This
patch replaces wrong usage of "clock" to "cycle".

v2: modified Documentation/perf-bench.txt for the descriptions of
--cycle option

Signed-off-by: Hitoshi Mitake <h.mitake@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1341236777-18457-1-git-send-email-h.mitake@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
12 years agopowerpc/kvm: sldi should be sld
Michael Neuling [Mon, 25 Jun 2012 13:33:11 +0000 (13:33 +0000)] 
powerpc/kvm: sldi should be sld

Since we are taking a registers, this should never have been an sldi.
Talking to paulus offline, this is the correct fix.

Was introduced by:
 commit 19ccb76a1938ab364a412253daec64613acbf3df
 Author: Paul Mackerras <paulus@samba.org>
 Date:   Sat Jul 23 17:42:46 2011 +1000

Talking to paulus, this shouldn't be a literal.

Signed-off-by: Michael Neuling <mikey@neuling.org>
CC: <stable@kernel.org> [v3.2+]
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/xmon: Use cpumask iterator to avoid warning
Anton Blanchard [Thu, 28 Jun 2012 19:28:57 +0000 (19:28 +0000)] 
powerpc/xmon: Use cpumask iterator to avoid warning

We have a bug report where the kernel hits a warning in the cpumask
code:

WARNING: at include/linux/cpumask.h:107

Which is:
        WARN_ON_ONCE(cpu >= nr_cpumask_bits);

The backtrace is:
        cpu_cmd
        cmds
        xmon_core
        xmon
        die

xmon is iterating through 0 to NR_CPUS. I'm not sure why we are still
open coding this but iterating above nr_cpu_ids is definitely a bug.

This patch iterates through all possible cpus, in case we issue a
system reset and CPUs in an offline state call in.

Perhaps the old code was trying to handle CPUs that were in the
partition but were never started (eg kexec into a kernel with an
nr_cpus= boot option). They are going to die way before we get into
xmon since we haven't set any kernel state up for them.

Signed-off-by: Anton Blanchard <anton@samba.org>
CC: <stable@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agoMerge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Linus Torvalds [Sun, 1 Jul 2012 18:02:25 +0000 (11:02 -0700)] 
Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm

Pull two ARM fixes from Russell King:
 "It's been fairly quiet with the fixes.  Just two this time.  One fixes
  a long standing problem with KALLSYMS needing an additional pass, and
  the other sorts a problem with the vmalloc space interacting with
  static IO mappings."

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7438/1: fill possible PMD empty section gaps
  ARM: 7428/1: Prevent KALLSYM size mismatch on ARM.

12 years agox86, microcode: Make reload interface per system
Borislav Petkov [Thu, 21 Jun 2012 12:07:17 +0000 (14:07 +0200)] 
x86, microcode: Make reload interface per system

The reload interface should be per-system so that a full system ucode
reload happens (on each core) when doing

echo 1 > /sys/devices/system/cpu/microcode/reload

Move it to the cpu subsys directory instead of it being per-cpu.

Cc: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Link: http://lkml.kernel.org/r/1340280437-7718-3-git-send-email-bp@amd64.org
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
12 years agox86, microcode: Sanitize per-cpu microcode reloading interface
Borislav Petkov [Thu, 21 Jun 2012 12:07:16 +0000 (14:07 +0200)] 
x86, microcode: Sanitize per-cpu microcode reloading interface

Microcode reloading in a per-core manner is a very bad idea for both
major x86 vendors. And the thing is, we have such interface with which
we can end up with different microcode versions applied on different
cores of an otherwise homogeneous wrt (family,model,stepping) system.

So turn off the possibility of doing that per core and allow it only
system-wide.

This is a minimal fix which we'd like to see in stable too thus the
more-or-less arbitrary decision to allow system-wide reloading only on
the BSP:

$ echo 1 > /sys/devices/system/cpu/cpu0/microcode/reload
...

and disable the interface on the other cores:

$ echo 1 > /sys/devices/system/cpu/cpu23/microcode/reload
-bash: echo: write error: Invalid argument

Also, allowing the reload only from one CPU (the BSP in
that case) doesn't allow the reload procedure to degenerate
into an O(n^2) deal when triggering reloads from all
/sys/devices/system/cpu/cpuX/microcode/reload sysfs nodes
simultaneously.

A more generic fix will follow.

Cc: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Link: http://lkml.kernel.org/r/1340280437-7718-2-git-send-email-bp@amd64.org
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: <stable@vger.kernel.org>
12 years agoARM: 7438/1: fill possible PMD empty section gaps
Nicolas Pitre [Wed, 27 Jun 2012 16:28:57 +0000 (17:28 +0100)] 
ARM: 7438/1: fill possible PMD empty section gaps

On ARM with the 2-level page table format, a PMD entry is represented by
two consecutive section entries covering 2MB of virtual space.

However, static mappings always were allowed to use separate 1MB section
entries.  This means in practice that a static mapping may create half
populated PMDs via create_mapping().

Since commit 0536bdf33f (ARM: move iotable mappings within the vmalloc
region) those static mappings are located in the vmalloc area. We must
ensure no such half populated PMDs are accessible once vmalloc() or
ioremap() start looking at the vmalloc area for nearby free virtual
address ranges, or various things leading to a kernel crash will happen.

Signed-off-by: Nicolas Pitre <nico@linaro.org>
Reported-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: "R, Sricharan" <r.sricharan@ti.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoe1000e: remove use of IP payload checksum
Bruce Allan [Sat, 30 Jun 2012 20:02:42 +0000 (20:02 +0000)] 
e1000e: remove use of IP payload checksum

Currently only used when packet split mode is enabled with jumbo frames,
IP payload checksum (for fragmented UDP packets) is mutually exclusive with
receive hashing offload since the hardware uses the same space in the
receive descriptor for the hardware-provided packet checksum and the RSS
hash, respectively.  Users currently must disable jumbos when receive
hashing offload is enabled, or vice versa, because of this incompatibility.
Since testing has shown that IP payload checksum does not provide any real
benefit, just remove it so that there is no longer a choice between jumbos
or receive hashing offload but not both as done in other Intel GbE drivers
(e.g. e1000, igb).

Also, add a missing check for IP checksum error reported by the hardware;
let the stack verify the checksum when this happens.

CC: stable <stable@vger.kernel.org> [3.4]
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agosctp: be more restrictive in transport selection on bundled sacks
Neil Horman [Sat, 30 Jun 2012 03:04:26 +0000 (03:04 +0000)] 
sctp: be more restrictive in transport selection on bundled sacks

It was noticed recently that when we send data on a transport, its possible that
we might bundle a sack that arrived on a different transport.  While this isn't
a major problem, it does go against the SHOULD requirement in section 6.4 of RFC
2960:

 An endpoint SHOULD transmit reply chunks (e.g., SACK, HEARTBEAT ACK,
   etc.) to the same destination transport address from which it
   received the DATA or control chunk to which it is replying.  This
   rule should also be followed if the endpoint is bundling DATA chunks
   together with the reply chunk.

This patch seeks to correct that.  It restricts the bundling of sack operations
to only those transports which have moved the ctsn of the association forward
since the last sack.  By doing this we guarantee that we only bundle outbound
saks on a transport that has received a chunk since the last sack.  This brings
us into stricter compliance with the RFC.

Vlad had initially suggested that we strictly allow only sack bundling on the
transport that last moved the ctsn forward.  While this makes sense, I was
concerned that doing so prevented us from bundling in the case where we had
received chunks that moved the ctsn on multiple transports.  In those cases, the
RFC allows us to select any of the transports having received chunks to bundle
the sack on.  so I've modified the approach to allow for that, by adding a state
variable to each transport that tracks weather it has moved the ctsn since the
last sack.  This I think keeps our behavior (and performance), close enough to
our current profile that I think we can do this without a sysctl knob to
enable/disable it.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: Vlad Yaseivch <vyasevich@gmail.com>
CC: David S. Miller <davem@davemloft.net>
CC: linux-sctp@vger.kernel.org
Reported-by: Michele Baldessari <michele@redhat.com>
Reported-by: sorin serban <sserban@redhat.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoigbvf: fix divide by zero
Mitch A Williams [Sat, 30 Jun 2012 00:23:19 +0000 (00:23 +0000)] 
igbvf: fix divide by zero

Using ethtool -C ethX rx-usecs 0 crashes with a divide by zero.
Refactor this function to fix this issue and make it more clear
what the intent of each conditional is. Add comment regarding
using a setting of zero.

CC: stable <stable@vger.kernel.org> [3.3+]
CC: David Ahern <daahern@cisco.com>
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoLinux 3.5-rc5
Linus Torvalds [Sat, 30 Jun 2012 23:08:57 +0000 (16:08 -0700)] 
Linux 3.5-rc5

12 years agoMerge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
Linus Torvalds [Sat, 30 Jun 2012 23:01:50 +0000 (16:01 -0700)] 
Merge tag 'fixes-for-linus' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "Another week, another batch of fixes.

  All are small, contained, targeted fixes for explicit problems --
  mostly build and boot failures across i.MX, OMAP, Renesas/Shmobile and
  Samsung."

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: imx6q: fix suspend regression caused by common clk migration
  ARM: OMAP4470: Fix OMAP4470 boot failure
  ARM: EXYNOS: Fix EXYNOS_DEV_DMA Kconfig entry
  ARM: OMAP2+: nand: fix build error when CONFIG_MTD_ONENAND_OMAP2=n
  ARM: shmobile: r8a7779: Route all interrupts to ARM
  ARM: shmobile: kzm9d: use late init machine hook
  ARM: shmobile: kzm9g: use late init machine hook
  ARM: mach-shmobile: armadillo800eva: Use late init machine hook
  ARM: SAMSUNG: Fix for S3C2412 EBI memory mapping
  ARM: mach-shmobile: add missing GPIO IRQ configuration on mackerel
  ARM: mach-shmobile: Fix build when SMP is enabled and EMEV2 is not enabled
  ARM: shmobile: sh7372: bugfix: chclr_offset base
  ARM: shmobile: sh73a0: bugfix: SY-DMAC number
  ARM: SAMSUNG: Should check for IS_ERR(clk) instead of NULL

12 years agoprintk.c: fix kernel-doc warnings
Randy Dunlap [Sat, 30 Jun 2012 22:37:24 +0000 (15:37 -0700)] 
printk.c: fix kernel-doc warnings

Fix kernel-doc warnings in printk.c: use correct parameter name.

  Warning(kernel/printk.c:2429): No description found for parameter 'buf'
  Warning(kernel/printk.c:2429): Excess function parameter 'line' description in 'kmsg_dump_get_buffer'

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agolinux/irq.h: fix kernel-doc warning
Randy Dunlap [Sat, 30 Jun 2012 22:30:46 +0000 (15:30 -0700)] 
linux/irq.h: fix kernel-doc warning

Fix kernel-doc warning.  This struct member was removed in commit
875682648b89 ("irq: Remove irq_chip->release()") so remove its
associated kernel-doc entry also.

  Warning(include/linux/irq.h:338): Excess struct/union/enum/typedef member 'release' description in 'irq_chip'

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Cc: Richard Weinberger <richard@nod.at>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMerge branch 'v3.5-samsung-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel...
Olof Johansson [Sat, 30 Jun 2012 22:27:52 +0000 (15:27 -0700)] 
Merge branch 'v3.5-samsung-fixes-1' of git://git./linux/kernel/git/kgene/linux-samsung into fixes

* 'v3.5-samsung-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: EXYNOS: Fix EXYNOS_DEV_DMA Kconfig entry
  ARM: SAMSUNG: Fix for S3C2412 EBI memory mapping
  ARM: SAMSUNG: Should check for IS_ERR(clk) instead of NULL

12 years agoARM: imx6q: fix suspend regression caused by common clk migration
Shawn Guo [Tue, 5 Jun 2012 07:16:43 +0000 (15:16 +0800)] 
ARM: imx6q: fix suspend regression caused by common clk migration

When moving to common clk framework, the imx6q clks rom and mmdc_ch1_axi
get different on/off states than old clk driver, which breaks suspend
function.  There might be a better way to manage these clocks, but let's
takes the old clk driver approach to fix the regression first.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
12 years agoMerge tag 'omap-fixes-for-v3.5-rc4' of git://git.kernel.org/pub/scm/linux/kernel...
Olof Johansson [Sat, 30 Jun 2012 22:21:00 +0000 (15:21 -0700)] 
Merge tag 'omap-fixes-for-v3.5-rc4' of git://git./linux/kernel/git/tmlind/linux-omap into fixes

From Tony Lindgren:
"Here's one more regression fix that I missed earlier, and a
 trivial fix to get omap4470 booting."

* tag 'omap-fixes-for-v3.5-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP4470: Fix OMAP4470 boot failure
  ARM: OMAP2+: nand: fix build error when CONFIG_MTD_ONENAND_OMAP2=n

12 years agoMerge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
Linus Torvalds [Sat, 30 Jun 2012 18:11:58 +0000 (11:11 -0700)] 
Merge branch 'release' of git://git./linux/kernel/git/lenb/linux

Pull ACPI & Power Management patches from Len Brown.

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
  acpi_pad: fix power_saving thread deadlock
  ACPI video: Still use ACPI backlight control if _DOS doesn't exist
  ACPI, APEI, Avoid too much error reporting in runtime
  ACPI: Add a quirk for "AMILO PRO V2030" to ignore the timer overriding
  ACPI: Remove one board specific WARN when ignoring timer overriding
  ACPI: Make acpi_skip_timer_override cover all source_irq==0 cases
  ACPI, x86: fix Dell M6600 ACPI reboot regression via DMI
  ACPI sysfs.c strlen fix

12 years agoMerge tag 'driver-core-3.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 30 Jun 2012 17:11:24 +0000 (10:11 -0700)] 
Merge tag 'driver-core-3.5-rc5' of git://git./linux/kernel/git/gregkh/driver-core

Pull driver Core fixes from Greg Kroah-Hartman:
 "Here is a number of printk() fixes, specifically a few reported by the
  crazy blog program that ships in SUSE releases (that's "boot log" and
  not "web log", it predates the general "blog" terminology by many
  years), and the restoration of the continuation line functionality
  reported by Stephen and others.  Yes, the changes seem a bit big this
  late in the cycle, but I've been beating on them for a while now, and
  Stephen has even optimized it a bit, so all looks good to me.

  The other change in here is a Documentation update for the stable
  kernel rules describing how some distro patches should be backported,
  to hopefully drive a bit more response from the distros to the stable
  kernel releases.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
* tag 'driver-core-3.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  printk: Optimize if statement logic where newline exists
  printk: flush continuation lines immediately to console
  syslog: fill buffer with more than a single message for SYSLOG_ACTION_READ
  Revert "printk: return -EINVAL if the message len is bigger than the buf size"
  printk: fix regression in SYSLOG_ACTION_CLEAR
  stable: Allow merging of backports for serious user-visible performance issues

12 years agoMerge branches 'acpi_pad-bugzilla-42981', 'apei-bugzilla-43282', 'video-bugzilla...
Len Brown [Sat, 30 Jun 2012 04:53:50 +0000 (00:53 -0400)] 
Merge branches 'acpi_pad-bugzilla-42981', 'apei-bugzilla-43282', 'video-bugzilla-43168', 'bugzilla-40002' and 'bugfix-misc' into release

bug fixes

12 years agoacpi_pad: fix power_saving thread deadlock
Stuart Hayes [Wed, 13 Jun 2012 21:10:45 +0000 (16:10 -0500)] 
acpi_pad: fix power_saving thread deadlock

The acpi_pad driver can get stuck in destroy_power_saving_task()
waiting for kthread_stop() to stop a power_saving thread.  The problem
is that the isolated_cpus_lock mutex is owned when
destroy_power_saving_task() calls kthread_stop(), which waits for a
power_saving thread to end, and the power_saving thread tries to
acquire the isolated_cpus_lock when it calls round_robin_cpu().  This
patch fixes the issue by making round_robin_cpu() use its own mutex.

https://bugzilla.kernel.org/show_bug.cgi?id=42981

Cc: stable@vger.kernel.org
Signed-off-by: Stuart Hayes <Stuart_Hayes@Dell.com>
Signed-off-by: Len Brown <len.brown@intel.com>
12 years agoACPI video: Still use ACPI backlight control if _DOS doesn't exist
Zhang Rui [Wed, 20 Jun 2012 01:48:43 +0000 (09:48 +0800)] 
ACPI video: Still use ACPI backlight control if _DOS doesn't exist

This fixes a regression in 3.4-rc1 caused by commit
ea9f8856bd6d4ed45885b06a338f7362cd6c60e5
(ACPI video: Harden video bus adding.)

Some platforms don't have _DOS control method, but the ACPI
backlight still works.
We should not invoke _DOS for these platforms.

https://bugzilla.kernel.org/show_bug.cgi?id=43168

Cc: Igor Murzov <intergalactic.anonymous@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
12 years agoMerge tag 'pm-for-3.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Sat, 30 Jun 2012 02:05:41 +0000 (19:05 -0700)] 
Merge tag 'pm-for-3.5-rc5' of git://git./linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael J. Wysocki:

 * Fix for a bug in async suspend error code path causing parents to
   wait forever for their children in case of a suspend error from
   Mandeep Singh Baines (-stable metarial).

 * Fix for a suspend regression related to earlier changes in the ACPI
   cpuidle driver from Deepthi Dharwar.

* tag 'pm-for-3.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM / ACPI: Fix suspend/resume regression caused by cpuidle cleanup.
  PM / Sleep: Prevent waiting forever on asynchronous suspend after abort

12 years agoMerge branch 'master' of git://1984.lsi.us.es/nf
David S. Miller [Fri, 29 Jun 2012 23:35:53 +0000 (16:35 -0700)] 
Merge branch 'master' of git://1984.lsi.us.es/nf

Pablo Neira Ayuso says:

====================
The following are 4 fixes and the update of the MAINTAINERS file
to point to my Netfilter trees.

They are:

* One refcount leak fix in IPVS IPv6 support from Eric Dumazet.

* One fix for interface comparison in ipset hash-netiface sets
  from Florian Westphal.

* One fix for a missing rcu_read_unlock in nfnetlink from
  Tomasz Bursztyka.

* One fix for a kernel crash if IPSET_CMD_NONE is set to ipset via
  nfnetlink, again from Tomasz Bursztyka.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoprintk: Optimize if statement logic where newline exists
Steven Rostedt [Fri, 29 Jun 2012 15:40:11 +0000 (11:40 -0400)] 
printk: Optimize if statement logic where newline exists

In reviewing Kay's fix up patch: "printk: Have printk() never buffer its
data", I found two if statements that could be combined and optimized.

Put together the two 'cont.len && cont.owner == current' if statements
into a single one, and check if we need to call cont_add(). This also
removes the unneeded double cont_flush() calls.

Link: http://lkml.kernel.org/r/1340869133.876.10.camel@mop
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Kay Sievers <kay@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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