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perf: Disable PERF_SAMPLE_BRANCH_* when not supported

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PERF_SAMPLE_BRANCH_* is disabled for:

 - SW events (sw counters, tracepoints)
 - HW breakpoints
 - ALL but Intel x86 architecture
 - AMD64 processors

Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1328826068-11713-10-git-send-email-eranian@google.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Stephane Eranian 2012-02-09 23:20:59 +01:00 • committed by Ingo Molnar
parent 3e702ff6d1
commit 2481c5fa6d
9 changed files with 57 additions and 0 deletions
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3
arch/x86/kernel/cpu/perf_event_amd.c
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@ -139,6 +139,9 @@ static int amd_pmu_hw_config(struct perf_event *event)
if (ret)
return ret;
if (has_branch_stack(event))
return -EOPNOTSUPP;
if (event->attr.exclude_host && event->attr.exclude_guest)
/*
* When HO == GO == 1 the hardware treats that as GO == HO == 0