[PATCH 10/21] perf trace: No need to enable evsels for workload started from perf

From: Arnaldo Carvalho de Melo
Date: Wed Feb 11 2015 - 16:09:47 EST


From: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>

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

Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Don Zickus <dzickus@xxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-vmj3f6o3vxrg7mrdipts09li@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
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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