224 #define TASK_TOMBSTONE ((void *)-1L)  macro
228 	return READ_ONCE(event->owner) == TASK_TOMBSTONE;  in is_kernel_event()
338 	if (task == TASK_TOMBSTONE)  in event_function_call()
353 	if (task == TASK_TOMBSTONE)  in event_function_call()
380 		if (task == TASK_TOMBSTONE)  in event_function_local()
389 	if (task == TASK_TOMBSTONE)  in event_function_local()
1289 		if (ctx->task && ctx->task != TASK_TOMBSTONE)  in put_ctx()
1294 		if (ctx->task == TASK_TOMBSTONE)  in put_ctx()
1506 		if (ctx->task == TASK_TOMBSTONE ||  in perf_lock_task_context()
3053 		if (ctx->task == TASK_TOMBSTONE) {  in perf_install_in_context()
3070 	if (WARN_ON_ONCE(task == TASK_TOMBSTONE))  in perf_install_in_context()
3110 	if (WARN_ON_ONCE(task == TASK_TOMBSTONE)) {  in perf_install_in_context()
11514 	if (task == TASK_TOMBSTONE)  in perf_event_addr_filters_apply()
13646 	if (ctx->task == TASK_TOMBSTONE) {  in SYSCALL_DEFINE5()
13913 	event->owner = TASK_TOMBSTONE;  in perf_event_create_kernel_counter()
13930 	if (ctx->task == TASK_TOMBSTONE) {  in perf_event_create_kernel_counter()
14098 		if (task && task != TASK_TOMBSTONE)  in sync_child_event()
14217 	WRITE_ONCE(ctx->task, TASK_TOMBSTONE);  in perf_event_exit_task_context()