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perf tools: Add support for PERF_RECORD_AUX_OUTPUT_HW_ID

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The PERF_RECORD_AUX_OUTPUT_HW_ID event provides a way to match AUX output
data like Intel PT PEBS-via-PT back to the event that it came from, by
providing a hardware ID that is present in the AUX output.

Reviewed-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: x86@kernel.org
Link: http://lore.kernel.org/lkml/20210907163903.11820-3-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter
2021-09-07 19:39:02 +03:00
committed by Arnaldo Carvalho de Melo
parent 70ae034d49
commit 6175047358
10 changed files with 66 additions and 2 deletions
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tools/include/uapi/linux/perf_event.h
+15
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@@ -1141,6 +1141,21 @@ enum perf_event_type {
*/
PERF_RECORD_TEXT_POKE = 20,
/*
* Data written to the AUX area by hardware due to aux_output, may need
* to be matched to the event by an architecture-specific hardware ID.
* This records the hardware ID, but requires sample_id to provide the
* event ID. e.g. Intel PT uses this record to disambiguate PEBS-via-PT
* records from multiple events.
*
* struct {
* struct perf_event_header header;
* u64 hw_id;
* struct sample_id sample_id;
* };
*/
PERF_RECORD_AUX_OUTPUT_HW_ID = 21,
PERF_RECORD_MAX, /* non-ABI */
};