linux-kernel - Re: [PATCH] perf arm-spe: Fix incorrect sample timestamp in perf script

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Message-ID: <20210628014953.GA163942@leoy-ThinkPad-X240s>
Date:   Mon, 28 Jun 2021 09:49:53 +0800
From:   Leo Yan <leo.yan@...aro.org>
To:     Yang Jihong <yangjihong1@...wei.com>
Cc:     john.garry@...wei.com, will@...nel.org, mathieu.poirier@...aro.org,
        peterz@...radead.org, mingo@...hat.com, acme@...nel.org,
        mark.rutland@....com, alexander.shishkin@...ux.intel.com,
        jolsa@...hat.com, namhyung@...nel.org, james.clark@....com,
        andre.przywara@....com, linux-arm-kernel@...ts.infradead.org,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] perf arm-spe: Fix incorrect sample timestamp in perf
 script

Hi Jihong,

On Sat, Jun 26, 2021 at 11:21:15AM +0800, Yang Jihong wrote:
> When use perf script to parse ARM SPE data, sample timestamp does not match
> the timestamp stored in the AUX buffer, arm_spe_prep_sample function set
> "samlpe->time = speq->timestamp", "speq->timestamp" is the timestamp of first
> packet in auxtrace buffer. As a result, the time of all samples in a auxtrace
> buffer uses the same timestamp.

Could you confirm if the patch set [1] can fix your issue?

Thanks,
Leo

[1] https://lore.kernel.org/patchwork/cover/1431624/