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    Subject[tip:perf/core] perf tools: Introduce trace_event__tp_format_id()
    Commit-ID:  71fe1052af98fc5b615c067425aeb6fe39a0368c
    Gitweb: http://git.kernel.org/tip/71fe1052af98fc5b615c067425aeb6fe39a0368c
    Author: Jiri Olsa <jolsa@kernel.org>
    AuthorDate: Sun, 10 Jul 2016 13:07:54 +0200
    Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
    CommitDate: Tue, 12 Jul 2016 16:14:52 -0300

    perf tools: Introduce trace_event__tp_format_id()

    To get struct event_format object from tracepoint ID. It will be used
    in following patches.

    Signed-off-by: Jiri Olsa <jolsa@kernel.org>
    Cc: David Ahern <dsahern@gmail.com>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
    Link: http://lkml.kernel.org/r/1468148882-10362-3-git-send-email-jolsa@kernel.org
    Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
    ---
    tools/perf/util/trace-event.c | 8 ++++++++
    tools/perf/util/trace-event.h | 2 ++
    2 files changed, 10 insertions(+)

    diff --git a/tools/perf/util/trace-event.c b/tools/perf/util/trace-event.c
    index 8ae051e..c330780 100644
    --- a/tools/perf/util/trace-event.c
    +++ b/tools/perf/util/trace-event.c
    @@ -105,3 +105,11 @@ trace_event__tp_format(const char *sys, const char *name)

    return tp_format(sys, name);
    }
    +
    +struct event_format *trace_event__tp_format_id(int id)
    +{
    + if (!tevent_initialized && trace_event__init2())
    + return ERR_PTR(-ENOMEM);
    +
    + return pevent_find_event(tevent.pevent, id);
    +}
    diff --git a/tools/perf/util/trace-event.h b/tools/perf/util/trace-event.h
    index bce5b1d..b0af9c8 100644
    --- a/tools/perf/util/trace-event.h
    +++ b/tools/perf/util/trace-event.h
    @@ -23,6 +23,8 @@ int trace_event__register_resolver(struct machine *machine,
    struct event_format*
    trace_event__tp_format(const char *sys, const char *name);

    +struct event_format *trace_event__tp_format_id(int id);
    +
    int bigendian(void);

    void event_format__fprintf(struct event_format *event,
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