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    Subject[PATCH 10/21] perf trace: No need to enable evsels for workload started from perf
    Date
    From: Arnaldo Carvalho de Melo <acme@redhat.com>

    As they will have perf_event_attr.enable_on_exec set, starting as soon
    as we exec() the workload.

    Cc: Adrian Hunter <adrian.hunter@intel.com>
    Cc: Borislav Petkov <bp@suse.de>
    Cc: David Ahern <dsahern@gmail.com>
    Cc: Don Zickus <dzickus@redhat.com>
    Cc: Frederic Weisbecker <fweisbec@gmail.com>
    Cc: Jiri Olsa <jolsa@redhat.com>
    Cc: Mike Galbraith <efault@gmx.de>
    Cc: Namhyung Kim <namhyung@kernel.org>
    Cc: Peter Zijlstra <peterz@infradead.org>
    Cc: Stephane Eranian <eranian@google.com>
    Link: http://lkml.kernel.org/n/tip-vmj3f6o3vxrg7mrdipts09li@git.kernel.org
    Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
    ---
    tools/perf/builtin-trace.c | 4 ++--
    1 file changed, 2 insertions(+), 2 deletions(-)

    diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
    index 7e935f1083ec..66300aea08b0 100644
    --- a/tools/perf/builtin-trace.c
    +++ b/tools/perf/builtin-trace.c
    @@ -2109,10 +2109,10 @@ static int trace__run(struct trace *trace, int argc, const char **argv)
    if (err < 0)
    goto out_error_mmap;

    - perf_evlist__enable(evlist);
    -
    if (forks)
    perf_evlist__start_workload(evlist);
    + else
    + perf_evlist__enable(evlist);

    trace->multiple_threads = evlist->threads->map[0] == -1 || evlist->threads->nr > 1;
    again:
    --
    1.9.3


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