acpi/acpica/exmutex.c

20 acpi_ex_link_mutex(union acpi_operand_object *obj_desc,
27  * PARAMETERS:  obj_desc            - The mutex to be unlinked
35 void acpi_ex_unlink_mutex(union acpi_operand_object *obj_desc)
37 	struct acpi_thread_state *thread = obj_desc->mutex.owner_thread;
45 	if (obj_desc->mutex.next) {
46 		(obj_desc->mutex.next)->mutex.prev = obj_desc->mutex.prev;
49 	if (obj_desc->mutex.prev) {
50 		(obj_desc->mutex.prev)->mutex.next = obj_desc->mutex.next;
58 		(obj_desc->mutex.prev)->mutex.original_sync_level =
59 		    obj_desc->mutex.original_sync_level;
61 		thread->acquired_mutex_list = obj_desc->mutex.next;
69  * PARAMETERS:  obj_desc            - The mutex to be linked
79 acpi_ex_link_mutex(union acpi_operand_object *obj_desc,
88 	obj_desc->mutex.prev = NULL;
89 	obj_desc->mutex.next = list_head;
94 		list_head->mutex.prev = obj_desc;
99 	thread->acquired_mutex_list = obj_desc;
107  *              obj_desc            - Mutex object
127 			     union acpi_operand_object *obj_desc,
132 	ACPI_FUNCTION_TRACE_PTR(ex_acquire_mutex_object, obj_desc);
134 	if (!obj_desc) {
140 	if (obj_desc->mutex.thread_id == thread_id) {
145 		obj_desc->mutex.acquisition_depth++;
151 	if (obj_desc == acpi_gbl_global_lock_mutex) {
155 		    acpi_ex_system_wait_mutex(obj_desc->mutex.os_mutex,
168 	obj_desc->mutex.thread_id = thread_id;
169 	obj_desc->mutex.acquisition_depth = 1;
170 	obj_desc->mutex.original_sync_level = 0;
171 	obj_desc->mutex.owner_thread = NULL;	/* Used only for AML Acquire() */
181  *              obj_desc            - Mutex object
192 		      union acpi_operand_object *obj_desc,
197 	ACPI_FUNCTION_TRACE_PTR(ex_acquire_mutex, obj_desc);
199 	if (!obj_desc) {
208 			    acpi_ut_get_node_name(obj_desc->mutex.node)));
216 	if (walk_state->thread->current_sync_level > obj_desc->mutex.sync_level) {
220 			    acpi_ut_get_node_name(obj_desc->mutex.node),
228 			  obj_desc->mutex.sync_level,
230 			  obj_desc->mutex.acquisition_depth,
234 					      obj_desc,
237 	if (ACPI_SUCCESS(status) && obj_desc->mutex.acquisition_depth == 1) {
241 		obj_desc->mutex.owner_thread = walk_state->thread;
242 		obj_desc->mutex.original_sync_level =
245 		    obj_desc->mutex.sync_level;
249 		acpi_ex_link_mutex(obj_desc, walk_state->thread);
254 			  obj_desc->mutex.sync_level,
256 			  obj_desc->mutex.acquisition_depth));
265  * PARAMETERS:  obj_desc            - The object descriptor for this op
283 acpi_status acpi_ex_release_mutex_object(union acpi_operand_object *obj_desc)
289 	if (obj_desc->mutex.acquisition_depth == 0) {
295 	obj_desc->mutex.acquisition_depth--;
296 	if (obj_desc->mutex.acquisition_depth != 0) {
303 	if (obj_desc->mutex.owner_thread) {
307 		acpi_ex_unlink_mutex(obj_desc);
308 		obj_desc->mutex.owner_thread = NULL;
313 	if (obj_desc == acpi_gbl_global_lock_mutex) {
316 		acpi_os_release_mutex(obj_desc->mutex.os_mutex);
321 	obj_desc->mutex.thread_id = 0;
329  * PARAMETERS:  obj_desc            - The object descriptor for this op
339 acpi_ex_release_mutex(union acpi_operand_object *obj_desc,
348 	if (!obj_desc) {
352 	owner_thread = obj_desc->mutex.owner_thread;
359 			    acpi_ut_get_node_name(obj_desc->mutex.node)));
368 			    acpi_ut_get_node_name(obj_desc->mutex.node)));
377 	    (obj_desc != acpi_gbl_global_lock_mutex)) {
381 			    acpi_ut_get_node_name(obj_desc->mutex.node),
393 	if (obj_desc->mutex.sync_level != owner_thread->current_sync_level) {
397 			    acpi_ut_get_node_name(obj_desc->mutex.node),
398 			    obj_desc->mutex.sync_level,
414 			  obj_desc->mutex.sync_level,
417 			  obj_desc->mutex.acquisition_depth,
420 	status = acpi_ex_release_mutex_object(obj_desc);
425 	if (obj_desc->mutex.acquisition_depth == 0) {
435 			  obj_desc->mutex.sync_level,
438 			  obj_desc->mutex.acquisition_depth));
464 	union acpi_operand_object *obj_desc;
471 		obj_desc = next;
474 				  obj_desc->mutex.node->name.ascii,
475 				  obj_desc->mutex.sync_level,
476 				  obj_desc->mutex.acquisition_depth));
480 		if (obj_desc == acpi_gbl_global_lock_mutex) {
486 			acpi_os_release_mutex(obj_desc->mutex.os_mutex);
492 		    obj_desc->mutex.original_sync_level;
496 		next = obj_desc->mutex.next;
498 		obj_desc->mutex.prev = NULL;
499 		obj_desc->mutex.next = NULL;
500 		obj_desc->mutex.acquisition_depth = 0;
501 		obj_desc->mutex.owner_thread = NULL;
502 		obj_desc->mutex.thread_id = 0;