From: Leo Yan <leo.yan@linaro.org>
To: Arnaldo Carvalho de Melo <acme@kernel.org>,
James Clark <james.clark@arm.com>,
John Garry <john.garry@huawei.com>, Will Deacon <will@kernel.org>,
Mathieu Poirier <mathieu.poirier@linaro.org>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
Dave Martin <Dave.Martin@arm.com>, Al Grant <Al.Grant@arm.com>,
linux-arm-kernel@lists.infradead.org,
linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Leo Yan <leo.yan@linaro.org>
Subject: [PATCH v5 2/5] perf arm-spe: Convert event kernel time to counter value
Date: Wed, 19 May 2021 15:19:36 +0800 [thread overview]
Message-ID: <20210519071939.1598923-3-leo.yan@linaro.org> (raw)
In-Reply-To: <20210519071939.1598923-1-leo.yan@linaro.org>
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 --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;
--
2.25.1
next prev parent reply other threads:[~2021-05-19 7:19 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-19 7:19 [PATCH v5 0/5] perf arm-spe: Enable timestamp Leo Yan
2021-05-19 7:19 ` [PATCH v5 1/5] perf arm-spe: Save clock parameters from TIME_CONV event Leo Yan
2021-05-19 7:19 ` Leo Yan [this message]
2021-05-19 7:19 ` [PATCH v5 3/5] perf arm-spe: Assign kernel time to synthesized event Leo Yan
2021-05-19 7:19 ` [PATCH v5 4/5] perf arm-spe: Bail out if the trace is later than perf event Leo Yan
2021-05-19 7:19 ` [PATCH v5 5/5] perf arm-spe: Don't wait for PERF_RECORD_EXIT event Leo Yan
2021-06-25 13:25 ` James Clark
2021-06-28 12:12 ` Leo Yan
2021-07-01 17:03 ` Arnaldo Carvalho de Melo
2021-07-02 1:31 ` Leo Yan
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