linux-kernel - Re: [PATCH 5/6] perf mem: Clean up is_mem_loads_aux

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Message-ID: <CAP-5=fXtAKnvnubkqTUPdY9P98FqE5B9m3N+hRzRvPkvK3WS2w@mail.gmail.com>
Date:   Wed, 6 Dec 2023 13:10:00 -0800
From:   Ian Rogers <irogers@...gle.com>
To:     kan.liang@...ux.intel.com
Cc:     acme@...nel.org, peterz@...radead.org, mingo@...hat.com,
        namhyung@...nel.org, jolsa@...nel.org, adrian.hunter@...el.com,
        john.g.garry@...cle.com, will@...nel.org, james.clark@....com,
        mike.leach@...aro.org, leo.yan@...aro.org,
        yuhaixin.yhx@...ux.alibaba.com, renyu.zj@...ux.alibaba.com,
        tmricht@...ux.ibm.com, ravi.bangoria@....com,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 5/6] perf mem: Clean up is_mem_loads_aux_event()

On Wed, Dec 6, 2023 at 12:13 PM <kan.liang@...ux.intel.com> wrote:
>
> From: Kan Liang <kan.liang@...ux.intel.com>
>
> The aux_event can be retrieved from the perf_pmu now. Implement a
> generic support.
>
> Signed-off-by: Kan Liang <kan.liang@...ux.intel.com>

Reviewed-by: Ian Rogers <irogers@...gle.com>

Thanks,
Ian

> ---
>  tools/perf/arch/x86/util/mem-events.c | 13 -------------
>  tools/perf/util/mem-events.c          | 14 ++++++++++++--
>  2 files changed, 12 insertions(+), 15 deletions(-)
>
> diff --git a/tools/perf/arch/x86/util/mem-events.c b/tools/perf/arch/x86/util/mem-events.c
> index b776d849fc64..71ffe16de751 100644
> --- a/tools/perf/arch/x86/util/mem-events.c
> +++ b/tools/perf/arch/x86/util/mem-events.c
> @@ -28,16 +28,3 @@ struct perf_mem_event perf_mem_events_amd[PERF_MEM_EVENTS__MAX] = {
>         E(NULL,         NULL,           NULL,   false,  0),
>         E("mem-ldst",   "%s//",         NULL,   false,  0),
>  };
> -
> -bool is_mem_loads_aux_event(struct evsel *leader)
> -{
> -       struct perf_pmu *pmu = perf_pmus__find("cpu");
> -
> -       if (!pmu)
> -               pmu = perf_pmus__find("cpu_core");
> -
> -       if (pmu && !perf_pmu__have_event(pmu, "mem-loads-aux"))
> -               return false;
> -
> -       return leader->core.attr.config == MEM_LOADS_AUX;
> -}
> diff --git a/tools/perf/util/mem-events.c b/tools/perf/util/mem-events.c
> index 9ea9e9a868c4..336d1109b3a5 100644
> --- a/tools/perf/util/mem-events.c
> +++ b/tools/perf/util/mem-events.c
> @@ -103,9 +103,19 @@ static const char *perf_mem_events__name(int i, struct perf_pmu *pmu)
>         return NULL;
>  }
>
> -__weak bool is_mem_loads_aux_event(struct evsel *leader __maybe_unused)
> +bool is_mem_loads_aux_event(struct evsel *leader)
>  {
> -       return false;
> +       struct perf_pmu *pmu = leader->pmu;
> +       struct perf_mem_event *e;
> +
> +       if (!pmu || !pmu->mem_events)
> +               return false;
> +
> +       e = &pmu->mem_events[PERF_MEM_EVENTS__LOAD];
> +       if (!e->aux_event)
> +               return false;
> +
> +       return leader->core.attr.config == e->aux_event;
>  }
>
>  int perf_mem_events__parse(struct perf_pmu *pmu, const char *str)
> --
> 2.35.1
>