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49c692b7df
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: edc41a1099 ("perf record: Enable off-cpu analysis with BPF")
Signed-off-by: Namhyung 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.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
38 lines
942 B
C
38 lines
942 B
C
#ifndef PERF_UTIL_OFF_CPU_H
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#define PERF_UTIL_OFF_CPU_H
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#include <linux/perf_event.h>
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struct evlist;
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struct target;
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struct perf_session;
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struct record_opts;
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#define OFFCPU_EVENT "offcpu-time"
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#define OFFCPU_SAMPLE_TYPES (PERF_SAMPLE_IDENTIFIER | PERF_SAMPLE_IP | \
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PERF_SAMPLE_TID | PERF_SAMPLE_TIME | \
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PERF_SAMPLE_ID | PERF_SAMPLE_CPU | \
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PERF_SAMPLE_PERIOD | PERF_SAMPLE_CALLCHAIN | \
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PERF_SAMPLE_CGROUP)
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#ifdef HAVE_BPF_SKEL
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int off_cpu_prepare(struct evlist *evlist, struct target *target,
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struct record_opts *opts);
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int off_cpu_write(struct perf_session *session);
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#else
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static inline int off_cpu_prepare(struct evlist *evlist __maybe_unused,
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struct target *target __maybe_unused,
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struct record_opts *opts __maybe_unused)
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{
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return -1;
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}
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static inline int off_cpu_write(struct perf_session *session __maybe_unused)
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{
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return -1;
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}
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#endif
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#endif /* PERF_UTIL_OFF_CPU_H */
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