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| author |   Andi Kleen <ak@linux.intel.com> | 2015-12-03 13:22:20 -0800 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2016-01-06 11:15:31 +0100 |
| commit | 01330d7288e0050c5aaabc558059ff91589e67cd (patch) | |
| tree | ee228a018d1a61ec4e5ecfb334c1753725fc1f72 /arch/x86/kernel/cpu/perf_event_intel.c | |
| parent | perf/x86: Remove warning for zero PEBS status (diff) | |
| download | linux-dev-01330d7288e0050c5aaabc558059ff91589e67cd.tar.xz linux-dev-01330d7288e0050c5aaabc558059ff91589e67cd.zip | |
perf/x86: Allow zero PEBS status with only single active event
Normally we drop PEBS events with a zero status field. But when
there is only a single PEBS event active we can assume the
PEBS record is for that event. The PEBS buffer is always flushed
when PEBS events are disabled, so there is no risk of mishandling
state PEBS records this way.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/1449177740-5422-2-git-send-email-andi@firstfloor.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel/cpu/perf_event_intel.c')
0 files changed, 0 insertions, 0 deletions