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 | |
| 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')
| -rw-r--r-- | arch/x86/events/amd/core.c | 6 | ||||
| -rw-r--r-- | arch/x86/events/intel/core.c | 6 | ||||
| -rw-r--r-- | arch/x86/events/intel/ds.c | 9 |
3 files changed, 7 insertions, 14 deletions
diff --git a/arch/x86/events/amd/core.c b/arch/x86/events/amd/core.c index 4386b10682ce..8c45b198b62f 100644 --- a/arch/x86/events/amd/core.c +++ b/arch/x86/events/amd/core.c @@ -928,10 +928,8 @@ static int amd_pmu_v2_handle_irq(struct pt_regs *regs) if (!x86_perf_event_set_period(event)) continue; - 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); 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); diff --git a/arch/x86/events/intel/ds.c b/arch/x86/events/intel/ds.c index 158cf845fc80..07c8a2cdc3ee 100644 --- a/arch/x86/events/intel/ds.c +++ b/arch/x86/events/intel/ds.c @@ -1720,10 +1720,8 @@ static void setup_pebs_fixed_sample_data(struct perf_event *event, data->sample_flags |= PERF_SAMPLE_TIME; } - 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); } static void adaptive_pebs_save_regs(struct pt_regs *regs, @@ -1883,8 +1881,7 @@ static void setup_pebs_adaptive_sample_data(struct perf_event *event, if (has_branch_stack(event)) { intel_pmu_store_pebs_lbrs(lbr); - data->br_stack = &cpuc->lbr_stack; - data->sample_flags |= PERF_SAMPLE_BRANCH_STACK; + perf_sample_save_brstack(data, event, &cpuc->lbr_stack); } } |