[tip:perf/core] perf trace: No need to enable evsels for workload started from perf

tip-bot for Arnaldo Carvalho de Melo
2015-02-18T18:27:53Z

Commit-ID: f7aa222ff397bd99153a039578864c1a36b8f391
Gitweb: http://git.kernel.org/tip/f7aa222ff397bd99153a039578864c1a36b8f391
Author: Arnaldo Carvalho de Melo <acme@redhat.com>
AuthorDate: Tue, 3 Feb 2015 13:25:39 -0300
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Sat, 7 Feb 2015 13:08:03 +0100

perf trace: No need to enable evsels for workload started from perf

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 7e935f1..66300ae 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;