perf: Use sample_flags for callchain

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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

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Namhyung Kim 2022-09-08 14:41:02 -07:00 • committed by Peter Zijlstra

parent fae9ebde96

commit 3749d33e51

3 changed files with 10 additions and 4 deletions

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4

arch/x86/events/amd/ibs.c

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arch/x86/events/intel/ds.c

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kernel/events/core.c

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