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| author | Leo Yan <leo.yan@arm.com> | 2026-09-01 17:36:17 +0100 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2026-10-04 17:09:23 +0000 |
| commit | 8f8301eaa400d38c9e6ff7884cad777be64969b4 (patch) | |
| tree | e62b50b7f6e6c6fef8a2af200a9a987a15ce7d98 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 87f78017e8c86b5b5e526818a85f92902217931e (diff) | |
coresight: perf: Suppress ITRACE start records
PERF_RECORD_ITRACE_START establishes the initial thread context at the
beginning of a trace. Afterwards, decoders track the thread context using
context packets.
Call perf_event_itrace_started() after successfully starting the event
to prevent perf core from emitting redundant PERF_RECORD_ITRACE_START
records when the event is scheduled in again.
When per-thread mode traces multiple child threads, tooling should
enable context ID tracing instead to identify each thread.
Signed-off-by: Leo Yan <leo.yan@arm.com>
Reviewed-by: James Clark <james.clark@linaro.org>
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions