1185 	refcount_inc(&ctx->refcount);  in get_ctx()
1213 	if (refcount_dec_and_test(&ctx->refcount)) {  in put_ctx()
1296 	if (!refcount_inc_not_zero(&ctx->refcount)) {  in perf_event_ctx_lock_nested()
1429 		    !refcount_inc_not_zero(&ctx->refcount)) {  in perf_lock_task_context()
2126 	if (!atomic_long_inc_not_zero(&group_leader->refcount))  in perf_get_aux_event()
2326 			WARN_ON_ONCE(!atomic_long_inc_not_zero(&event->refcount));  in event_sched_out()
4643 	refcount_set(&ctx->refcount, 1);  in __perf_event_init_context()
5072 	if (WARN(atomic_long_cmpxchg(&event->refcount, 1, 0) != 1,  in free_event()
5074 				atomic_long_read(&event->refcount), event)) {  in free_event()
5135 	if (!atomic_long_dec_and_test(&event->refcount))  in put_event()
5236 		void *var = &child->ctx->refcount;  in perf_event_release_kernel()
6095 		if (!refcount_inc_not_zero(&rb->refcount))  in ring_buffer_get()
6105 	if (!refcount_dec_and_test(&rb->refcount))  in ring_buffer_put()
6196 		if (!atomic_long_inc_not_zero(&event->refcount)) {  in perf_mmap_close()
11760 	atomic_long_set(&event->refcount, 1);  in perf_event_alloc()
12209 	if (!refcount_inc_not_zero(&gctx->refcount)) {  in __perf_event_ctx_lock_double()
13125 		wait_var_event(&ctx->refcount, refcount_read(&ctx->refcount) == 1);  in perf_event_free_task()
13225 	    !atomic_long_inc_not_zero(&parent_event->refcount)) {  in inherit_event()