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| author | Namhyung Kim <namhyung@kernel.org> | 2023-02-18 08:27:24 -0800 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2023-02-22 12:39:11 -0300 |
| commit | b48279af636de613e9dd03857d9cadd4beca8e7e (patch) | |
| tree | af89a81331497f19b15a6c5b39dd408a49f29f40 /tools/perf/util | |
| parent | f9fa0778ee7349a9aa3d2ea10e9f2ab843a0b44e (diff) | |
| download | linux-stable-b48279af636de613e9dd03857d9cadd4beca8e7e.tar.gz linux-stable-b48279af636de613e9dd03857d9cadd4beca8e7e.tar.bz2 linux-stable-b48279af636de613e9dd03857d9cadd4beca8e7e.zip | |
perf test: Fix offcpu test prev_state check
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>
Diffstat (limited to 'tools/perf/util')
| -rw-r--r-- | tools/perf/util/bpf_skel/off_cpu.bpf.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/util/bpf_skel/off_cpu.bpf.c b/tools/perf/util/bpf_skel/off_cpu.bpf.c index 38e3b287dbb2..d877a0a9731f 100644 --- a/tools/perf/util/bpf_skel/off_cpu.bpf.c +++ b/tools/perf/util/bpf_skel/off_cpu.bpf.c @@ -277,7 +277,7 @@ int on_switch(u64 *ctx) else prev_state = get_task_state(prev); - return off_cpu_stat(ctx, prev, next, prev_state); + return off_cpu_stat(ctx, prev, next, prev_state & 0xff); } char LICENSE[] SEC("license") = "Dual BSD/GPL"; |