diff options
| author | Kan Liang <kan.liang@linux.intel.com> | 2022-09-01 06:09:56 -0700 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-09-06 11:33:02 +0200 |
| commit | a9a931e2666878343782c82d7d55cc173ddeb3e9 (patch) | |
| tree | 1a5c971a8b8270afec0a4c05b7d6ea0e9072599a /arch/powerpc/perf | |
| parent | 47a3aeb39e8dc099ae431cd8b46bdf218f5511b2 (diff) | |
perf: Use sample_flags for branch stack
Use the new sample_flags to indicate whether the branch stack is filled
by the PMU driver.
Remove the br_stack from the perf_sample_data_init() to minimize the number
of cache lines touched.
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220901130959.1285717-4-kan.liang@linux.intel.com
Diffstat (limited to 'arch/powerpc/perf')
| -rw-r--r-- | arch/powerpc/perf/core-book3s.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c index 13919eb96931..1ad1efdb33f9 100644 --- a/arch/powerpc/perf/core-book3s.c +++ b/arch/powerpc/perf/core-book3s.c @@ -2297,6 +2297,7 @@ static void record_and_restart(struct perf_event *event, unsigned long val, cpuhw = this_cpu_ptr(&cpu_hw_events); power_pmu_bhrb_read(event, cpuhw); data.br_stack = &cpuhw->bhrb_stack; + data.sample_flags |= PERF_SAMPLE_BRANCH_STACK; } if (event->attr.sample_type & PERF_SAMPLE_DATA_SRC && |