[tip:perf/urgent] perf stat: Set child_pid after perf_evlist__prepare_workload()

[tip-bot for Namhyung Kim <tipbot@zytor.com>]

Commit-ID:  d20a47e70b57a77f4d1b0dba98a668e14c2f9bf9
Gitweb:     http://git.kernel.org/tip/d20a47e70b57a77f4d1b0dba98a668e14c2f9bf9
Author:     Namhyung Kim <namhyung.kim@lge.com>
AuthorDate: Mon, 30 Sep 2013 18:01:11 +0900
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Fri, 4 Oct 2013 15:16:05 -0300

perf stat: Set child_pid after perf_evlist__prepare_workload()

The commit acf2892270dc ("perf stat: Use perf_evlist__prepare/
start_workload()") converted to use the function but forgot to update
child_pid.  Fix it.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1380531671-28076-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/builtin-stat.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c
index f686d5f..5098f14 100644
--- a/tools/perf/builtin-stat.c
+++ b/tools/perf/builtin-stat.c
@@ -457,6 +457,7 @@ static int __run_perf_stat(int argc, const char **argv)
 			perror("failed to prepare workload");
 			return -1;
 		}
+		child_pid = evsel_list->workload.pid;
 	}
 
 	if (group)