diff mbox series

[v1,04/11] perf script: Add not taken event for branches

Message ID 20250205121555.180606-5-leo.yan@arm.com (mailing list archive)
State New
Headers show
Series perf script: Refactor branch flags for Arm SPE | expand

Commit Message

Leo Yan Feb. 5, 2025, 12:15 p.m. UTC 
Some hardware (e.g., Arm SPE) can trace the not taken event for
branches.  Add a flag for this event and support printing it.

Signed-off-by: Leo Yan <leo.yan@arm.com>
---
 tools/perf/util/event.h                 | 6 ++++--
 tools/perf/util/trace-event-scripting.c | 1 +
 2 files changed, 5 insertions(+), 2 deletions(-)
diff mbox series

Patch

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}
 };