linux-kernel - Re: [PATCH 0/7] perf: cs-etm: Fixes around timestamped and timeless decoding

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Message-ID: <CAHbLzkq2WCy_vf0cXNvRT8GYZpymVRHF0J22Dfbrav6+dsusGA@mail.gmail.com>
Date:   Wed, 26 Apr 2023 09:06:23 -0700
From:   Yang Shi <shy828301@...il.com>
To:     James Clark <james.clark@....com>
Cc:     linux-perf-users@...r.kernel.org, coresight@...ts.linaro.org,
        denik@...gle.com, Mathieu Poirier <mathieu.poirier@...aro.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Mike Leach <mike.leach@...aro.org>,
        Leo Yan <leo.yan@...aro.org>,
        John Garry <john.g.garry@...cle.com>,
        Will Deacon <will@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Ian Rogers <irogers@...gle.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/7] perf: cs-etm: Fixes around timestamped and timeless decoding

On Mon, Apr 24, 2023 at 6:48 AM James Clark <james.clark@....com> wrote:
>
> The first commit contains a fix for a recently introduced regression,
> but was always a shortcoming in the Coresight code anyway.
>
> The following commits are a tidyup in preparation for the last commit,
> which is a fairly major change to the decode logic that's also
> indirectly related to the regression so I thought it would be good time
> to fix that now.
>
> Applies to perf/core (9be6ab181b7b)

Thanks for working on this. I tested with perf/core branch on acme
tree, it does solve the "no samples" problem.

Please feel free to add: Tested-by: Yang Shi <shy828301@...il.com>

>
> James Clark (7):
>   perf: cs-etm: Fix timeless decode mode detection
>   perf tools: Add util function for overriding user set config values
>   perf: cs-etm: Don't test full_auxtrace because it's always set
>   perf: cs-etm: Validate options after applying them
>   perf: cs-etm: Allow user to override timestamp and contextid settings
>   perf: cs-etm: Use bool type for boolean values
>   perf: cs-etm: Add separate decode paths for timeless and per-thread
>     modes
>
>  tools/perf/arch/arm/util/cs-etm.c             | 223 +++++++++---------
>  tools/perf/arch/arm/util/pmu.c                |   2 +
>  tools/perf/arch/arm64/util/arm-spe.c          |  26 +-
>  tools/perf/arch/x86/util/intel-pt.c           |  22 +-
>  tools/perf/tests/shell/test_arm_coresight.sh  |  24 ++
>  .../perf/util/cs-etm-decoder/cs-etm-decoder.h |   8 +-
>  tools/perf/util/cs-etm.c                      | 200 +++++++++++-----
>  tools/perf/util/cs-etm.h                      |   6 +-
>  tools/perf/util/evsel.c                       |  29 +++
>  tools/perf/util/evsel.h                       |   3 +
>  10 files changed, 325 insertions(+), 218 deletions(-)
>
> --
> 2.34.1
>