[Powertop] [PATCH 1/2] perf: Pass 0 as a third argument to ioctl on perf_fd

The third argument of PERF_EVENT_IOC_{ENABLE,DISABLE} ioctl is a flag
to determine whether the command should be applied to group members.
Since the powertop doesn't use the event grouping feature, it'd better
passing 0 as a third argument explicitly.

Signed-off-by: Namhyung Kim <namhyung(a)gmail.com>
---
 src/perf/perf.cpp |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/perf/perf.cpp b/src/perf/perf.cpp
index 69f1da3..c8ba7a8 100644
--- a/src/perf/perf.cpp
+++ b/src/perf/perf.cpp
@@ -128,7 +128,7 @@ void perf_event::create_perf_event(char *eventname, int _cpu)
 		return;
 	}
 
-	ret = ioctl(perf_fd, PERF_EVENT_IOC_ENABLE);
+	ret = ioctl(perf_fd, PERF_EVENT_IOC_ENABLE, 0);
 
 	if (ret < 0) {
 		fprintf(stderr, "failed to enable perf \n");
@@ -210,7 +210,7 @@ void perf_event::start(void)
 void perf_event::stop(void)
 {
 	int ret;
-	ret = ioctl(perf_fd, PERF_EVENT_IOC_DISABLE);
+	ret = ioctl(perf_fd, PERF_EVENT_IOC_DISABLE, 0);
 	if (ret)
 		cout << "stop failing\n";
 }
-- 
1.7.9.2