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perf script: Add not taken event for branches

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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>
This commit is contained in:
Leo Yan 2025-03-04 11:12:32 +00:00 committed by Namhyung Kim
parent 88b1473135
commit 4caa971050
2 changed files with 5 additions and 2 deletions
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6
tools/perf/util/event.h
View File

@ -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) |\

1
tools/perf/util/trace-event-scripting.c
View File

@ -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}
};