diff options
| author | Namhyung Kim <namhyung@kernel.org> | 2023-01-17 22:05:55 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2023-01-18 11:57:20 +0100 |
| commit | eb55b455ef9c7123bdfa7e8a7f1ebeaa8034eb83 (patch) | |
| tree | c1a9039f102d7cae4cc1a49f97884b373aa7dac3 /arch/x86/events/intel/core.c | |
| parent | 0a9081cf0a11770f6b0affd377db8caa3ec4c793 (diff) | |
perf/core: Add perf_sample_save_brstack() helper
When we saves the branch stack to the perf sample data, we needs to
update the sample flags and the dynamic size. To make sure this is
done consistently, add the perf_sample_save_brstack() helper and
convert all call sites.
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20230118060559.615653-5-namhyung@kernel.org
Diffstat (limited to 'arch/x86/events/intel/core.c')
| -rw-r--r-- | arch/x86/events/intel/core.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c index 29d2d0411caf..14f0a746257d 100644 --- a/arch/x86/events/intel/core.c +++ b/arch/x86/events/intel/core.c @@ -3036,10 +3036,8 @@ static int handle_pmi_common(struct pt_regs *regs, u64 status) perf_sample_data_init(&data, 0, event->hw.last_period); - if (has_branch_stack(event)) { - data.br_stack = &cpuc->lbr_stack; - data.sample_flags |= PERF_SAMPLE_BRANCH_STACK; - } + if (has_branch_stack(event)) + perf_sample_save_brstack(&data, event, &cpuc->lbr_stack); if (perf_event_overflow(event, &data, regs)) x86_pmu_stop(event, 0); |