xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

perf: Disable PERF_SAMPLE_BRANCH_* when not supported

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

3
arch/x86/kernel/cpu/perf_event_amd.c
View File

@@ -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