diff mbox series

[v5,2/5] perf arm-spe: Convert event kernel time to counter value

Message ID 20210519071939.1598923-3-leo.yan@linaro.org (mailing list archive)
State New, archived
Headers show
Series perf arm-spe: Enable timestamp | expand

Commit Message

Leo Yan May 19, 2021, 7:19 a.m. UTC 
When handle a perf event, Arm SPE decoder needs to decide if this perf
event is earlier or later than the samples from Arm SPE trace data; to
do comparision, it needs to use the same unit for the time.

This patch converts the event kernel time to arch timer's counter value,
thus it can be used to compare with counter value contained in Arm SPE
Timestamp packet.

Signed-off-by: Leo Yan <leo.yan@linaro.org>
---
 tools/perf/util/arm-spe.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/tools/perf/util/arm-spe.c b/tools/perf/util/arm-spe.c
index d2ae5a5c13ee..ff8b52e6d475 100644
--- a/tools/perf/util/arm-spe.c
+++ b/tools/perf/util/arm-spe.c
@@ -669,7 +669,7 @@  static int arm_spe_process_event(struct perf_session *session,
 	}
 
 	if (sample->time && (sample->time != (u64) -1))
-		timestamp = sample->time;
+		timestamp = perf_time_to_tsc(sample->time, &spe->tc);
 	else
 		timestamp = 0;