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authorLeo Yan <leo.yan@linaro.org>2021-05-19 15:19:36 +0800
committerArnaldo Carvalho de Melo <acme@redhat.com>2021-07-01 16:14:36 -0300
commit630519014c7b5abc544d93e07ad6e9328098bf68 (patch)
tree3816c609cdf0bdac66c76d62800b07595d6e7079 /tools/perf
parentc210c3069636d830bc81f438711f0ad4a1602805 (diff)
perf arm-spe: Convert event kernel time to counter value
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> Reviewed-by: James Clark <james.clark@arm.com> Tested-by: James Clark <james.clark@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Al Grant <Al.Grant@arm.com> Cc: Dave Martin <Dave.Martin@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: John Garry <john.garry@huawei.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20210519071939.1598923-3-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
-rw-r--r--tools/perf/util/arm-spe.c2
1 files changed, 1 insertions, 1 deletions
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;