linux-kernel - Re: [PATCH v2 0/4] perf arm-spe: Track pid/tid for Arm SPE samples

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Date:   Thu, 11 Nov 2021 15:27:14 +0800
From:   Leo Yan <leo.yan@...aro.org>
To:     German Gomez <german.gomez@....com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        John Garry <john.garry@...wei.com>,
        Will Deacon <will@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 0/4] perf arm-spe: Track pid/tid for Arm SPE samples

Hi Arnaldo,

On Tue, Nov 09, 2021 at 11:50:16AM +0000, German Gomez wrote:
> The following patchset is an iteration on RFC [1] where pid/tid info is
> assigned to the Arm SPE synthesized samples. Two methods of tracking
> pids are considered: hardware-based (using Arm SPE CONTEXT packets), and
> context-switch events (from perf) as fallback.
> 
>   - Patch #1 enables pid tracking using RECORD_SWITCH* events from perf.
>   - Patch #2 updates perf-record documentation and arm-spe recording so
>     that they are consistent.
>   - Patch #3 saves the value of SPE CONTEXT packet to the arm_spe_record
>     struct.
>   - Patch #4 enables hardware-based pid tracking using SPE CONTEXT
>     packets.

I have tested this patch set, it works well on Hisilicon D06 board,
please consider to pick up.  Thanks!

Leo