linux-kernel - Re: [EXT] Re: [PATCH] perf jevents: fix no member named 'entries' issue

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Message-ID: <CAM9d7cheaFnAX_iA2je1f+P-JKwGHmbkYZ9rH_k_icCawQZgqA@mail.gmail.com>
Date:   Thu, 21 Sep 2023 11:51:40 -0700
From:   Namhyung Kim <namhyung@...nel.org>
To:     Xu Yang <xu.yang_2@....com>
Cc:     Ian Rogers <irogers@...gle.com>,
        "peterz@...radead.org" <peterz@...radead.org>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "acme@...nel.org" <acme@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "alexander.shishkin@...ux.intel.com" 
        <alexander.shishkin@...ux.intel.com>,
        "jolsa@...nel.org" <jolsa@...nel.org>,
        "adrian.hunter@...el.com" <adrian.hunter@...el.com>,
        "linux-perf-users@...r.kernel.org" <linux-perf-users@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [EXT] Re: [PATCH] perf jevents: fix no member named 'entries' issue

On Tue, Sep 19, 2023 at 9:16 PM Namhyung Kim <namhyung@...nel.org> wrote:
>
> Hello,
>
> On Tue, Sep 19, 2023 at 7:07 PM Xu Yang <xu.yang_2@....com> wrote:
> >
> > Hi Lan,
> >
> > > On Tue, Sep 19, 2023 at 1:04 AM Xu Yang <xu.yang_2@....com> wrote:
> > > >
> > > > The struct "pmu_events_table" has been changed after commit
> > > > 2e255b4f9f41 (perf jevents: Group events by PMU, 2023-08-23).
> > > > So there doesn't exist 'entries' in pmu_events_table anymore.
> > > > This will align the members with that commit. Othewise, below
> > > > errors will be printed when run jevent.py:
> > > >
> > > > pmu-events/pmu-events.c:5485:26: error: ‘struct pmu_metrics_table’ has no member named ‘entries’
> > > >  5485 |                         .entries = pmu_metrics__freescale_imx8dxl_sys,
> > > >
> > > > Signed-off-by: Xu Yang <xu.yang_2@....com>
> > >
> > > Reviewed-by: Ian Rogers <irogers@...gle.com>
> > >
> > > Thanks Xu! I wasn't able to repeat the failure but the fix looks good
> > > to me. Is the failure caused by adding new imx8dxl metrics? I'd like
> >
> > Yes.
> >
> > > to make sure we have testing coverage so this doesn't happen again.
> > > I'm trying:
> > > $ make -C tools/perf O=/tmp/perf JEVENTS_ARCH=all
> > > Could you confirm that this make command was broken without your fix
> > > plus the metric changes you've done?
> >
> > Below steps will repeat the failure.
> >
> > $ cd tools/
> > $ rm perf/pmu-events/arch/arm64/freescale/imx8mm/sys/ddrc.json
> > $ make clean
> > $ make JEVENTS_ARCH=all perf
> >
> > pmu-events/pmu-events.c:76586:26: error: ‘struct pmu_metrics_table’ has no member named ‘entries’
> > 76586 |                         .entries = pmu_metrics__freescale_imx8mm_sys,
> >       |                          ^~~~~~~
> > pmu-events/pmu-events.c:76587:26: error: ‘struct pmu_metrics_table’ has no member named ‘length’
> > 76587 |                         .length = ARRAY_SIZE(pmu_metrics__freescale_imx8mm_sys)
> >       |                          ^~~~~~
> >
> > If only metric table exists, then this error may occur.
>
> I can reproduce the error and confirm it fixed.
>
> Tested-by: Namhyung Kim <namhyung@...nel.org>

Applied to perf-tools-next, thanks!