1/****************************************************************************
2 ****************************************************************************
3 ***
4 ***   This header was automatically generated from a Linux kernel header
5 ***   of the same name, to make information necessary for userspace to
6 ***   call into the kernel available to libc.  It contains only constants,
7 ***   structures, and macros generated from the original header, and thus,
8 ***   contains no copyrightable information.
9 ***
10 ****************************************************************************
11 ****************************************************************************/
12#ifndef _LINUX_NOTIFIER_H
13#define _LINUX_NOTIFIER_H
14#include <linux/errno.h>
15#include <linux/mutex.h>
16#include <linux/rwsem.h>
17
18struct notifier_block {
19 int (*notifier_call)(struct notifier_block *, unsigned long, void *);
20 struct notifier_block *next;
21 int priority;
22};
23
24struct atomic_notifier_head {
25 spinlock_t lock;
26 struct notifier_block *head;
27};
28
29struct blocking_notifier_head {
30 struct rw_semaphore rwsem;
31 struct notifier_block *head;
32};
33
34struct raw_notifier_head {
35 struct notifier_block *head;
36};
37
38#define ATOMIC_INIT_NOTIFIER_HEAD(name) do {   spin_lock_init(&(name)->lock);   (name)->head = NULL;   } while (0)
39#define BLOCKING_INIT_NOTIFIER_HEAD(name) do {   init_rwsem(&(name)->rwsem);   (name)->head = NULL;   } while (0)
40#define RAW_INIT_NOTIFIER_HEAD(name) do {   (name)->head = NULL;   } while (0)
41
42#define ATOMIC_NOTIFIER_INIT(name) {   .lock = __SPIN_LOCK_UNLOCKED(name.lock),   .head = NULL }
43#define BLOCKING_NOTIFIER_INIT(name) {   .rwsem = __RWSEM_INITIALIZER((name).rwsem),   .head = NULL }
44#define RAW_NOTIFIER_INIT(name) {   .head = NULL }
45
46#define ATOMIC_NOTIFIER_HEAD(name)   struct atomic_notifier_head name =   ATOMIC_NOTIFIER_INIT(name)
47#define BLOCKING_NOTIFIER_HEAD(name)   struct blocking_notifier_head name =   BLOCKING_NOTIFIER_INIT(name)
48#define RAW_NOTIFIER_HEAD(name)   struct raw_notifier_head name =   RAW_NOTIFIER_INIT(name)
49
50#endif
51