perf sched: Handle missing trace samples in pipe mode

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For pipe mode streams, event attributes are received dynamically during
event processing, meaning session->evlist is not populated prior to
perf_session__process_events(). To handle pipe input correctly:
  - Register the missing .attr, .tracing_data, .build_id, and .feature
    callbacks in cmd_sched()

  - Promote the handlers array to file-scope (latency_handlers[]) and
    dynamically assign matching tracepoint handlers
    (or process_sched_ignore) inside
    perf_sched__process_tracepoint_sample() when evsel->handler is NULL;
    replace process_sched_wakeup_ignore() with process_sched_ignore()

  - Perform the trace check post-processing when handling pipe data

Fixes: 27295592c2 ("perf session: Share the common trace sample_check routine as perf_session__has_traces")
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Aaron Tomlin <atomlin@atomlin.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>

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Aaron Tomlin 2026-08-06 11:39:24 -04:00 • committed by Namhyung Kim

parent 4a81d59a9d

commit 44f8dd1ee1

1 changed files with 51 additions and 21 deletions

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tools/perf/builtin-sched.c

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