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| author | Leo Yan <leo.yan@arm.com> | 2025-03-04 14:12:32 +0300 |
|---|---|---|
| committer | Namhyung Kim <namhyung@kernel.org> | 2025-03-05 20:13:19 +0300 |
| commit | 4caa971050875ef17491ccf7c8d6defd4d99763f (patch) | |
| tree | 7c77954c2c05349858f4e219b0cd2791032b97a2 | |
| parent | 88b1473135e4c6667bac12aff25be11399cf8819 (diff) | |
| download | linux-4caa971050875ef17491ccf7c8d6defd4d99763f.tar.xz | |
perf script: Add not taken event for branches
Some hardware (e.g., Arm SPE) can trace the not taken event for
branches. Add a flag for this event and support printing it.
Reviewed-by: Ian Rogers <irogers@google.com>
Reviewed-by: James Clark <james.clark@linaro.org>
Signed-off-by: Leo Yan <leo.yan@arm.com>
Link: https://lore.kernel.org/r/20250304111240.3378214-5-leo.yan@arm.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
| -rw-r--r-- | tools/perf/util/event.h | 6 | ||||
| -rw-r--r-- | tools/perf/util/trace-event-scripting.c | 1 |
2 files changed, 5 insertions, 2 deletions
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h index 962fbc1714cf..c7f4b4b841ca 100644 --- a/tools/perf/util/event.h +++ b/tools/perf/util/event.h @@ -67,9 +67,10 @@ enum { PERF_IP_FLAG_INTR_DISABLE = 1ULL << 13, PERF_IP_FLAG_INTR_TOGGLE = 1ULL << 14, PERF_IP_FLAG_BRANCH_MISS = 1ULL << 15, + PERF_IP_FLAG_NOT_TAKEN = 1ULL << 16, }; -#define PERF_IP_FLAG_CHARS "bcrosyiABExghDtm" +#define PERF_IP_FLAG_CHARS "bcrosyiABExghDtmn" #define PERF_ADDITIONAL_STATE_MASK \ (PERF_IP_FLAG_IN_TX | \ @@ -91,7 +92,8 @@ enum { PERF_IP_FLAG_VMEXIT) #define PERF_IP_FLAG_BRACH_EVENT_MASK \ - PERF_IP_FLAG_BRANCH_MISS + (PERF_IP_FLAG_BRANCH_MISS | \ + PERF_IP_FLAG_NOT_TAKEN) #define PERF_MEM_DATA_SRC_NONE \ (PERF_MEM_S(OP, NA) |\ diff --git a/tools/perf/util/trace-event-scripting.c b/tools/perf/util/trace-event-scripting.c index 55d7e4e612d5..29cc467be14a 100644 --- a/tools/perf/util/trace-event-scripting.c +++ b/tools/perf/util/trace-event-scripting.c @@ -317,6 +317,7 @@ static const struct { const char *name; } branch_events[] = { {PERF_IP_FLAG_BRANCH_MISS, "miss"}, + {PERF_IP_FLAG_NOT_TAKEN, "not_taken"}, {0, NULL} }; |