Namhyung Kim eb55b455ef 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
2023-01-18 11:57:20 +01:00
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