diff options
Diffstat (limited to 'driver/gator_events_perf_pmu.c')
| -rw-r--r-- | driver/gator_events_perf_pmu.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/driver/gator_events_perf_pmu.c b/driver/gator_events_perf_pmu.c index d49277d..e62492b 100644 --- a/driver/gator_events_perf_pmu.c +++ b/driver/gator_events_perf_pmu.c @@ -136,6 +136,7 @@ static int gator_events_perf_pmu_online(int **buffer, bool migrate) static void __online_dispatch(int cpu, bool migrate, struct gator_attr *const attr, struct gator_event *const event) { perf_overflow_handler_t handler; + struct perf_event *pevent; event->zero = true; @@ -148,22 +149,22 @@ static void __online_dispatch(int cpu, bool migrate, struct gator_attr *const at handler = dummy_handler; #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 1, 0) - event->pevent = perf_event_create_kernel_counter(event->pevent_attr, cpu, 0, handler); + pevent = perf_event_create_kernel_counter(event->pevent_attr, cpu, 0, handler); #else - event->pevent = perf_event_create_kernel_counter(event->pevent_attr, cpu, 0, handler, 0); + pevent = perf_event_create_kernel_counter(event->pevent_attr, cpu, 0, handler, 0); #endif - if (IS_ERR(event->pevent)) { + if (IS_ERR(pevent)) { pr_err("gator: unable to online a counter on cpu %d\n", cpu); - event->pevent = NULL; return; } - if (event->pevent->state != PERF_EVENT_STATE_ACTIVE) { + if (pevent->state != PERF_EVENT_STATE_ACTIVE) { pr_err("gator: inactive counter on cpu %d\n", cpu); - perf_event_release_kernel(event->pevent); - event->pevent = NULL; + perf_event_release_kernel(pevent); return; } + + event->pevent = pevent; } static void gator_events_perf_pmu_online_dispatch(int cpu, bool migrate) |