linux-kernel - Re: [PATCH 6/9] perf tools: Pass build_id object to dso__set_build

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Date:   Wed, 30 Sep 2020 22:25:16 -0700
From:   Ian Rogers <irogers@...gle.com>
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>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Michael Petlan <mpetlan@...hat.com>,
        Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH 6/9] perf tools: Pass build_id object to dso__set_build_id

On Wed, Sep 30, 2020 at 10:15 AM Jiri Olsa <jolsa@...nel.org> wrote:
>
> Passing build_id object to dso__set_build_id, so it's easier
> to initialize dos's build id object.
>
> Signed-off-by: Jiri Olsa <jolsa@...nel.org>

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

Thanks,
Ian

> ---
>  tools/perf/util/dso.c            | 4 ++--
>  tools/perf/util/dso.h            | 2 +-
>  tools/perf/util/header.c         | 4 +++-
>  tools/perf/util/symbol-minimal.c | 2 +-
>  tools/perf/util/symbol.c         | 2 +-
>  5 files changed, 8 insertions(+), 6 deletions(-)
>
> diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c
> index 2f7f01ead9a1..4415ce83150b 100644
> --- a/tools/perf/util/dso.c
> +++ b/tools/perf/util/dso.c
> @@ -1326,9 +1326,9 @@ void dso__put(struct dso *dso)
>                 dso__delete(dso);
>  }
>
> -void dso__set_build_id(struct dso *dso, void *build_id)
> +void dso__set_build_id(struct dso *dso, struct build_id *bid)
>  {
> -       memcpy(dso->bid.data, build_id, sizeof(dso->bid.data));
> +       dso->bid = *bid;
>         dso->has_build_id = 1;
>  }
>
> diff --git a/tools/perf/util/dso.h b/tools/perf/util/dso.h
> index eac004210b47..5a5678dbdaa5 100644
> --- a/tools/perf/util/dso.h
> +++ b/tools/perf/util/dso.h
> @@ -260,7 +260,7 @@ bool dso__sorted_by_name(const struct dso *dso);
>  void dso__set_sorted_by_name(struct dso *dso);
>  void dso__sort_by_name(struct dso *dso);
>
> -void dso__set_build_id(struct dso *dso, void *build_id);
> +void dso__set_build_id(struct dso *dso, struct build_id *bid);
>  bool dso__build_id_equal(const struct dso *dso, u8 *build_id);
>  void dso__read_running_kernel_build_id(struct dso *dso,
>                                        struct machine *machine);
> diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
> index fe220f01fc94..21243adbb9fd 100644
> --- a/tools/perf/util/header.c
> +++ b/tools/perf/util/header.c
> @@ -2082,8 +2082,10 @@ static int __event_process_build_id(struct perf_record_header_build_id *bev,
>         dso = machine__findnew_dso(machine, filename);
>         if (dso != NULL) {
>                 char sbuild_id[SBUILD_ID_SIZE];
> +               struct build_id bid;
>
> -               dso__set_build_id(dso, &bev->build_id);
> +               build_id__init(&bid, bev->build_id, BUILD_ID_SIZE);
> +               dso__set_build_id(dso, &bid);
>
>                 if (dso_space != DSO_SPACE__USER) {
>                         struct kmod_path m = { .name = NULL, };
> diff --git a/tools/perf/util/symbol-minimal.c b/tools/perf/util/symbol-minimal.c
> index dba6b9e5d64e..f9eb0bee7f15 100644
> --- a/tools/perf/util/symbol-minimal.c
> +++ b/tools/perf/util/symbol-minimal.c
> @@ -349,7 +349,7 @@ int dso__load_sym(struct dso *dso, struct map *map __maybe_unused,
>                 dso->is_64_bit = ret;
>
>         if (filename__read_build_id(ss->name, &bid) > 0)
> -               dso__set_build_id(dso, bid.data);
> +               dso__set_build_id(dso, &bid);
>         return 0;
>  }
>
> diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
> index 369cbad09f0d..976632d0baa0 100644
> --- a/tools/perf/util/symbol.c
> +++ b/tools/perf/util/symbol.c
> @@ -1818,7 +1818,7 @@ int dso__load(struct dso *dso, struct map *map)
>             is_regular_file(dso->long_name)) {
>             __symbol__join_symfs(name, PATH_MAX, dso->long_name);
>                 if (filename__read_build_id(name, &bid) > 0)
> -                       dso__set_build_id(dso, bid.data);
> +                       dso__set_build_id(dso, &bid);
>         }
>
>         /*
> --
> 2.26.2
>