linux-kernel - Re: [PATCH 03/26] tools headers uapi: Sync tools/include/uapi/linux/perf

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Date:   Mon, 14 Sep 2020 14:39:34 +0900
From:   Namhyung Kim <namhyung@...nel.org>
To:     Jiri Olsa <jolsa@...nel.org>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        lkml <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Ingo Molnar <mingo@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Michael Petlan <mpetlan@...hat.com>,
        Song Liu <songliubraving@...com>,
        "Frank Ch. Eigler" <fche@...hat.com>,
        Ian Rogers <irogers@...gle.com>,
        Stephane Eranian <eranian@...gle.com>,
        Alexey Budankov <alexey.budankov@...ux.intel.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Adrian Hunter <adrian.hunter@...el.com>
Subject: Re: [PATCH 03/26] tools headers uapi: Sync tools/include/uapi/linux/perf_event.h

On Mon, Sep 14, 2020 at 6:03 AM Jiri Olsa <jolsa@...nel.org> wrote:
>
> Sync uapi header with kernel version for mmap3 support.
>
> Signed-off-by: Jiri Olsa <jolsa@...nel.org>
> ---
>  tools/include/uapi/linux/perf_event.h | 27 ++++++++++++++++++++++++++-
>  1 file changed, 26 insertions(+), 1 deletion(-)
>
> diff --git a/tools/include/uapi/linux/perf_event.h b/tools/include/uapi/linux/perf_event.h
> index 3e5dcdd48a49..84a0cbdab1ef 100644
> --- a/tools/include/uapi/linux/perf_event.h
> +++ b/tools/include/uapi/linux/perf_event.h
> @@ -384,7 +384,8 @@ struct perf_event_attr {
>                                 aux_output     :  1, /* generate AUX records instead of events */
>                                 cgroup         :  1, /* include cgroup events */
>                                 text_poke      :  1, /* include text poke events */
> -                               __reserved_1   : 30;
> +                               mmap3          :  1, /* include bpf events */

Same here..

Thanks
Namhyung


> +                               __reserved_1   : 29;
>
>         union {
>                 __u32           wakeup_events;    /* wakeup every n events */
> @@ -1060,6 +1061,30 @@ enum perf_event_type {
>          */
>         PERF_RECORD_TEXT_POKE                   = 20,
>
> +       /*
> +        * The MMAP3 records are an augmented version of MMAP2, they add
> +        * build id value to identify the exact binary behind map
> +        *
> +        * struct {
> +        *      struct perf_event_header        header;
> +        *
> +        *      u32                             pid, tid;
> +        *      u64                             addr;
> +        *      u64                             len;
> +        *      u64                             pgoff;
> +        *      u32                             maj;
> +        *      u32                             min;
> +        *      u64                             ino;
> +        *      u64                             ino_generation;
> +        *      u32                             prot, flags;
> +        *      u32                             reserved;
> +        *      u8                              buildid[20];
> +        *      char                            filename[];
> +        *      struct sample_id                sample_id;
> +        * };
> +        */
> +       PERF_RECORD_MMAP3                       = 21,
> +
>         PERF_RECORD_MAX,                        /* non-ABI */
>  };
>
> --
> 2.26.2
>