179 #define TASK_TOMBSTONE ((void *)-1L)  macro
183 	return READ_ONCE(event->owner) == TASK_TOMBSTONE;  in is_kernel_event()
284 	if (task == TASK_TOMBSTONE)  in event_function_call()
297 	if (task == TASK_TOMBSTONE) {  in event_function_call()
323 		if (task == TASK_TOMBSTONE)  in event_function_local()
332 	if (task == TASK_TOMBSTONE)  in event_function_local()
1271 		if (ctx->task && ctx->task != TASK_TOMBSTONE)  in put_ctx()
1483 		if (ctx->task == TASK_TOMBSTONE ||  in perf_lock_task_context()
2866 		if (ctx->task == TASK_TOMBSTONE) {  in perf_install_in_context()
2883 	if (WARN_ON_ONCE(task == TASK_TOMBSTONE))  in perf_install_in_context()
2923 	if (WARN_ON_ONCE(task == TASK_TOMBSTONE)) {  in perf_install_in_context()
10218 	if (task == TASK_TOMBSTONE)  in perf_event_addr_filters_apply()
12237 		if (gctx->task == TASK_TOMBSTONE) {  in SYSCALL_DEFINE5()
12276 	if (ctx->task == TASK_TOMBSTONE) {  in SYSCALL_DEFINE5()
12468 	event->owner = TASK_TOMBSTONE;  in perf_event_create_kernel_counter()
12481 	if (ctx->task == TASK_TOMBSTONE) {  in perf_event_create_kernel_counter()
12596 		if (task && task != TASK_TOMBSTONE)  in sync_child_event()
12699 	WRITE_ONCE(child_ctx->task, TASK_TOMBSTONE);  in perf_event_exit_task_context()
12808 		WRITE_ONCE(ctx->task, TASK_TOMBSTONE);  in perf_event_free_task()