-struct atomic_notifier_head {
- spinlock_t lock;
- struct notifier_block *head;
-};
-
-struct blocking_notifier_head {
- struct rw_semaphore rwsem;
- struct notifier_block *head;
-};
-
-struct raw_notifier_head {
- struct notifier_block *head;
-};
-
-#define ATOMIC_INIT_NOTIFIER_HEAD(name) do { \
- spin_lock_init(&(name)->lock); \
- (name)->head = NULL; \
- } while (0)
-#define BLOCKING_INIT_NOTIFIER_HEAD(name) do { \
- init_rwsem(&(name)->rwsem); \
- (name)->head = NULL; \
- } while (0)
-#define RAW_INIT_NOTIFIER_HEAD(name) do { \
- (name)->head = NULL; \
- } while (0)
-
-#define ATOMIC_NOTIFIER_INIT(name) { \
- .lock = __SPIN_LOCK_UNLOCKED(name.lock), \
- .head = NULL }
-#define BLOCKING_NOTIFIER_INIT(name) { \
- .rwsem = __RWSEM_INITIALIZER((name).rwsem), \
- .head = NULL }
-#define RAW_NOTIFIER_INIT(name) { \
- .head = NULL }
-
-#define ATOMIC_NOTIFIER_HEAD(name) \
- struct atomic_notifier_head name = \
- ATOMIC_NOTIFIER_INIT(name)
-#define BLOCKING_NOTIFIER_HEAD(name) \
- struct blocking_notifier_head name = \
- BLOCKING_NOTIFIER_INIT(name)
-#define RAW_NOTIFIER_HEAD(name) \
- struct raw_notifier_head name = \
- RAW_NOTIFIER_INIT(name)