Re: [PATCH 1/4] perf vendor events arm64: Remove L1D_CACHE_LMISS from AmpereOne list

[Ian Rogers]

On Fri, Aug 4, 2023 at 4:02 AM John Garry <john.g.garry@xxxxxxxxxx> wrote:
>
> On 03/08/2023 22:13, Ilkka Koskinen wrote:
> > amperene/cache.json file tried to include L1D_CACHE_LMISS while it
> > doesn't exist in common-and-microarch.json. While this bug doesn't seem to
> > cause issue in newer kernels with jevents.py script, it prevents building
> > older perf tools with the backported patch.

Fwiw, newer perf tool on old kernel should always be fine. But I
understand that if you are trying to build a tree with backports in
it...

>
> jevents.py needs to be improved so it errors on these events which
> cannot be fixed up, like it used to. I'll look to do that when I get a
> chance.
>
> >
> > Fixes: a9650b7f6fc0 ("perf vendor events arm64: Add AmpereOne core PMU events")
> > Reported-by: Dave Kleikamp <dave.kleikamp@xxxxxxxxxx>
> > Closes: https://urldefense.com/v3/__https://lore.kernel.org/all/76bb2e47-ce44-76ae-838e-53279047084d@xxxxxxxxxx/__;!!ACWV5N9M2RV99hQ!IlO3yUW8jhm6wp8BJalODmD7WjzJleyREtTWS2pdn90Af5BD3P7g0fTGldbw15pSn49ycWiKpWDysjXw_ECS4XbbJQ$
> > Signed-off-by: Ilkka Koskinen <ilkka@xxxxxxxxxxxxxxxxxxxxxx>
>
> Reviewed-by: John Garry <john.g.garry@xxxxxxxxxx>

Reviewed-by: Ian Rogers <irogers@xxxxxxxxxx>

Thanks,
Ian

> > ---
> >   tools/perf/pmu-events/arch/arm64/ampere/ampereone/cache.json | 3 ---
> >   1 file changed, 3 deletions(-)
> >
> > diff --git a/tools/perf/pmu-events/arch/arm64/ampere/ampereone/cache.json b/tools/perf/pmu-events/arch/arm64/ampere/ampereone/cache.json
> > index fc0633054211..7a2b7b200f14 100644
> > --- a/tools/perf/pmu-events/arch/arm64/ampere/ampereone/cache.json
> > +++ b/tools/perf/pmu-events/arch/arm64/ampere/ampereone/cache.json
> > @@ -92,9 +92,6 @@
> >       {
> >           "ArchStdEvent": "L1D_CACHE_LMISS_RD"
> >       },
> > -    {
> > -        "ArchStdEvent": "L1D_CACHE_LMISS"
> > -    },
> >       {
> >           "ArchStdEvent": "L1I_CACHE_LMISS"
> >       },
>