On Fedora 36, the 'perf record' offcpu profiling tests are failing. It was because the BPF checks the prev task's state being S or D but actually it has more bits set. Let's check the LSB 8 bits for the purpose of offcpu profiling. Reported-by: Arnaldo Carvalho de Melo <acme@kernel.org> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Ian Rogers <irogers@google.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20230218162724.1292657-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
||
---|---|---|
.. | ||
.gitignore | ||
bperf_cgroup.bpf.c | ||
bperf_follower.bpf.c | ||
bperf_leader.bpf.c | ||
bperf_u.h | ||
bpf_prog_profiler.bpf.c | ||
func_latency.bpf.c | ||
kwork_trace.bpf.c | ||
lock_contention.bpf.c | ||
lock_data.h | ||
off_cpu.bpf.c |