diff options
| author | Yogesh Tillu <yogesh.tillu@linaro.org> | 2015-07-20 14:23:03 +0530 |
|---|---|---|
| committer | Yogesh Tillu <yogesh.tillu@linaro.org> | 2015-07-21 13:13:39 +0530 |
| commit | a8b75a4ec9ebfd1b2bb141aca08ff2adaef5b578 (patch) | |
| tree | bdc08401fc4c944b48a8f5c5a0818e1902bc74c4 | |
| parent | 324efeb1d30f59780fd062244781ca6dae92026e (diff) | |
Cleaup : Initialization of perf event attributes
Signed-off-by: Yogesh Tillu <yogesh.tillu@linaro.org>
Reviewed-by: Anders Roxell <anders.roxell@linaro.org>
| -rw-r--r-- | perf_rc_mmap.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/perf_rc_mmap.c b/perf_rc_mmap.c index d8e0856..4f55765 100644 --- a/perf_rc_mmap.c +++ b/perf_rc_mmap.c @@ -54,9 +54,14 @@ static int counter_init(unsigned int counter,long unsigned int sample) printf("Error: SIGIO signal handler %s\n",strerror(errno)); } attr.sample_period = sample; + memset(&attr,0,sizeof(struct perf_event_attr)); + attr.size = sizeof(struct perf_event_attr); attr.sample_type = PERF_SAMPLE_IP; attr.wakeup_events = 1; attr.config = counter; + attr.mmap = 1; + attr.watermark = 0; + attr.disabled = 1; fddev = syscall(__NR_perf_event_open, &attr, 0, -1, -1, 0); if (fddev == -1) { fprintf(stderr, |