diff options
| author | Stephane Eranian <eranian@google.com> | 2012-02-09 23:20:59 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2012-03-05 14:55:42 +0100 |
| commit | 2481c5fa6db0237e4f0168f88913178b2b495b7c (patch) | |
| tree | 4d0e8e9616c8e83ca2a72abbc3ac94621adc49be /arch/x86/kernel | |
| parent | 3e702ff6d1ea12dcf1c798ecb61e7f3a1579df42 (diff) | |
perf: Disable PERF_SAMPLE_BRANCH_* when not supported
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>
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/cpu/perf_event_amd.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/perf_event_amd.c b/arch/x86/kernel/cpu/perf_event_amd.c index 67250a52430..dd002faff7a 100644 --- a/arch/x86/kernel/cpu/perf_event_amd.c +++ b/arch/x86/kernel/cpu/perf_event_amd.c @@ -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 |