Re: [PATCH -tip] bpf: Check flags for branch stack in bpf_read_branch_records helper

Peter Zijlstra
2022-09-27T20:47:08Z

On Tue, Sep 27, 2022 at 10:32:59PM +0200, Jiri Olsa wrote:
> Recent commit [1] changed branch stack data indication from
> br_stack pointer to sample_flags in perf_sample_data struct.
>
> We need to check sample_flags for PERF_SAMPLE_BRANCH_STACK
> bit for valid branch stack data.
>
> [1] a9a931e26668 ("perf: Use sample_flags for branch stack")
>
> Cc: Kan Liang <kan.liang@linux.intel.com>
> Fixes: a9a931e26668 ("perf: Use sample_flags for branch stack")
> Signed-off-by: Jiri Olsa <jolsa@kernel.org>
> ---
> NOTE sending on top of tip/master because [1] is not
> merged in bpf-next/master yet

Shall I stick this in tip/perf/core right along with [1] then?