diff options
| author | Namhyung Kim <namhyung@kernel.org> | 2022-09-09 00:41:02 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2022-09-13 16:03:22 +0300 |
| commit | 3749d33e510c3dc695b3a5886b706310890d7ebd (patch) | |
| tree | 38264855d5b66b021dc61ae373b61daebd665e17 /kernel/events | |
| parent | fae9ebde9696385fa2e993e752cf68d9781f3ea0 (diff) | |
| download | linux-3749d33e510c3dc695b3a5886b706310890d7ebd.tar.xz | |
perf: Use sample_flags for callchain
So that it can call perf_callchain() only if needed. Historically it used
__PERF_SAMPLE_CALLCHAIN_EARLY but we can do that with sample_flags in the
struct perf_sample_data.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220908214104.3851807-1-namhyung@kernel.org
Diffstat (limited to 'kernel/events')
| -rw-r--r-- | kernel/events/core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index 3e90e454b995..c98ecf3e09ba 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -7320,7 +7320,7 @@ void perf_prepare_sample(struct perf_event_header *header, if (sample_type & PERF_SAMPLE_CALLCHAIN) { int size = 1; - if (!(sample_type & __PERF_SAMPLE_CALLCHAIN_EARLY)) + if (filtered_sample_type & PERF_SAMPLE_CALLCHAIN) data->callchain = perf_callchain(event, regs); size += data->callchain->nr; |