• Namhyung Kim's avatar
    perf offcpu: Accept allowed sample types only · 49c692b7
    Namhyung Kim authored
    As offcpu-time event is synthesized at the end, it could not get the
    all the sample info.  Define OFFCPU_SAMPLE_TYPES for allowed ones and
    mask out others in evsel__config() to prevent parse errors.
    
    Because perf sample parsing assumes a specific ordering with the
    sample types, setting unsupported one would make it fail to read
    data like perf record -d/--data.
    
    Fixes: edc41a10 ("perf record: Enable off-cpu analysis with BPF")
    Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
    Cc: Blake Jones <blakejones@google.com>
    Cc: Hao Luo <haoluo@google.com>
    Cc: Ian Rogers <irogers@google.com>
    Cc: Jiri Olsa <jolsa@kernel.org>
    Cc: Milian Wolff <milian.wolff@kdab.com>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Song Liu <songliubraving@fb.com>
    Cc: bpf@vger.kernel.org
    Link: http://lore.kernel.org/lkml/20220624231313.367909-3-namhyung@kernel.orgSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
    49c692b7
bpf_off_cpu.c 7.76 KB