210 #define TASK_TOMBSTONE ((void *)-1L)  macro
214 	return READ_ONCE(event->owner) == TASK_TOMBSTONE;  in is_kernel_event()
324 	if (task == TASK_TOMBSTONE)  in event_function_call()
339 	if (task == TASK_TOMBSTONE)  in event_function_call()
366 		if (task == TASK_TOMBSTONE)  in event_function_local()
375 	if (task == TASK_TOMBSTONE)  in event_function_local()
1270 		if (ctx->task && ctx->task != TASK_TOMBSTONE)  in put_ctx()
1483 		if (ctx->task == TASK_TOMBSTONE ||  in perf_lock_task_context()
2981 		if (ctx->task == TASK_TOMBSTONE) {  in perf_install_in_context()
2998 	if (WARN_ON_ONCE(task == TASK_TOMBSTONE))  in perf_install_in_context()
3038 	if (WARN_ON_ONCE(task == TASK_TOMBSTONE)) {  in perf_install_in_context()
11263 	if (task == TASK_TOMBSTONE)  in perf_event_addr_filters_apply()
13227 	if (ctx->task == TASK_TOMBSTONE) {  in SYSCALL_DEFINE5()
13489 	event->owner = TASK_TOMBSTONE;  in perf_event_create_kernel_counter()
13506 	if (ctx->task == TASK_TOMBSTONE) {  in perf_event_create_kernel_counter()
13675 		if (task && task != TASK_TOMBSTONE)  in sync_child_event()
13772 	WRITE_ONCE(child_ctx->task, TASK_TOMBSTONE);  in perf_event_exit_task_context()
13881 	WRITE_ONCE(ctx->task, TASK_TOMBSTONE);  in perf_event_free_task()