Commit 4caa9710 authored by Leo Yan's avatar Leo Yan Committed by Namhyung Kim
Browse files

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: default avatarIan Rogers <irogers@google.com>
Reviewed-by: default avatarJames Clark <james.clark@linaro.org>
Signed-off-by: default avatarLeo Yan <leo.yan@arm.com>
Link: https://lore.kernel.org/r/20250304111240.3378214-5-leo.yan@arm.com


Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
parent 88b14731

tools/perf/util/event.h

+4 −2
Original line number Diff line number Diff line
@@ -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) |\

tools/perf/util/trace-event-scripting.c

+1 −0
Original line number Diff line number Diff line
@@ -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}

};