[PATCH v4 4/6] perf arm-spe: Assign kernel time to synthesized event

From: Leo Yan
Date: Mon Apr 12 2021 - 05:43:53 EST


In current code, it assigns the arch timer counter to the synthesized
samples Arm SPE trace, thus the samples don't contain the kernel time
but only contain the raw counter value.

To fix the issue, this patch converts the timer counter to kernel time
and assigns it to sample timestamp.

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

diff --git a/tools/perf/util/arm-spe.c b/tools/perf/util/arm-spe.c
index 23714cf0380e..c13a89f06ab8 100644
--- a/tools/perf/util/arm-spe.c
+++ b/tools/perf/util/arm-spe.c
@@ -234,7 +234,7 @@ static void arm_spe_prep_sample(struct arm_spe *spe,
struct arm_spe_record *record = &speq->decoder->record;

if (!spe->timeless_decoding)
- sample->time = speq->timestamp;
+ sample->time = tsc_to_perf_time(record->timestamp, &spe->tc);

sample->ip = record->from_ip;
sample->cpumode = arm_spe_cpumode(spe, sample->ip);
--
2.25.1