180 #define TASK_TOMBSTONE ((void *)-1L)  macro
184 	return READ_ONCE(event->owner) == TASK_TOMBSTONE;  in is_kernel_event()
285 	if (task == TASK_TOMBSTONE)  in event_function_call()
298 	if (task == TASK_TOMBSTONE) {  in event_function_call()
324 		if (task == TASK_TOMBSTONE)  in event_function_local()
333 	if (task == TASK_TOMBSTONE)  in event_function_local()
1211 		if (ctx->task && ctx->task != TASK_TOMBSTONE)  in put_ctx()
1423 		if (ctx->task == TASK_TOMBSTONE ||  in perf_lock_task_context()
2854 		if (ctx->task == TASK_TOMBSTONE) {  in perf_install_in_context()
2871 	if (WARN_ON_ONCE(task == TASK_TOMBSTONE))  in perf_install_in_context()
2911 	if (WARN_ON_ONCE(task == TASK_TOMBSTONE)) {  in perf_install_in_context()
10425 	if (task == TASK_TOMBSTONE)  in perf_event_addr_filters_apply()
12463 		if (gctx->task == TASK_TOMBSTONE) {  in SYSCALL_DEFINE5()
12513 	if (ctx->task == TASK_TOMBSTONE) {  in SYSCALL_DEFINE5()
12705 	event->owner = TASK_TOMBSTONE;  in perf_event_create_kernel_counter()
12718 	if (ctx->task == TASK_TOMBSTONE) {  in perf_event_create_kernel_counter()
12833 		if (task && task != TASK_TOMBSTONE)  in sync_child_event()
12936 	WRITE_ONCE(child_ctx->task, TASK_TOMBSTONE);  in perf_event_exit_task_context()
13045 		WRITE_ONCE(ctx->task, TASK_TOMBSTONE);  in perf_event_free_task()