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From:   Leo Yan <leo.yan@linaro.org>
To:     Arnaldo Carvalho de Melo <acme@kernel.org>,
        John Garry <john.garry@huawei.com>,
        Will Deacon <will@kernel.org>,
        Mathieu Poirier <mathieu.poirier@linaro.org>,
        James Clark <james.clark@arm.com>, Al Grant <Al.Grant@arm.com>,
        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>,
        Adrian Hunter <adrian.hunter@intel.com>,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
Cc:     Leo Yan <leo.yan@linaro.org>
Subject: [PATCH v2 4/7] perf arm-spe: Convert event kernel time to counter value
Date:   Sat,  3 Apr 2021 15:23:43 +0800
Message-Id: <20210403072346.30430-5-leo.yan@linaro.org>
In-Reply-To: <20210403072346.30430-1-leo.yan@linaro.org>
References: <20210403072346.30430-1-leo.yan@linaro.org>
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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 69ce3483d1af..4cf558b0218a 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