notifier.h File Reference

#include <linux/errno.h>
#include <linux/mutex.h>
#include <linux/rwsem.h>
#include <linux/srcu.h>

Go to the source code of this file.

Data Structures
struct	notifier_block
struct	atomic_notifier_head
struct	blocking_notifier_head
struct	raw_notifier_head
struct	srcu_notifier_head

Macros
#define	ATOMIC_INIT_NOTIFIER_HEAD(name)
#define	BLOCKING_INIT_NOTIFIER_HEAD(name)
#define	RAW_INIT_NOTIFIER_HEAD(name)
#define	srcu_cleanup_notifier_head(name)   cleanup_srcu_struct(&(name)->srcu);
#define	ATOMIC_NOTIFIER_INIT(name)
#define	BLOCKING_NOTIFIER_INIT(name)
#define	RAW_NOTIFIER_INIT(name)
#define	ATOMIC_NOTIFIER_HEAD(name)
#define	BLOCKING_NOTIFIER_HEAD(name)
#define	RAW_NOTIFIER_HEAD(name)

Functions
void	srcu_init_notifier_head (struct srcu_notifier_head *nh)

Macro Definition Documentation

#define ATOMIC_INIT_NOTIFIER_HEAD

(

name

)

Value:

do {    \
        spin_lock_init(&(name)->lock);  \
        (name)->head = NULL;        \
    } while (0)

Definition at line 76 of file notifier.h.

#define ATOMIC_NOTIFIER_HEAD

(

name

)

Value:

struct atomic_notifier_head name =          \
        ATOMIC_NOTIFIER_INIT(name)

Definition at line 103 of file notifier.h.

#define ATOMIC_NOTIFIER_INIT

(

name

)

Value:

{               \
        .lock = __SPIN_LOCK_UNLOCKED(name.lock),    \
        .head = NULL }

Definition at line 93 of file notifier.h.

#define BLOCKING_INIT_NOTIFIER_HEAD

(

name

)

Value:

do {    \
        init_rwsem(&(name)->rwsem); \
        (name)->head = NULL;        \
    } while (0)

Definition at line 80 of file notifier.h.

#define BLOCKING_NOTIFIER_HEAD

(

name

)

Value:

struct blocking_notifier_head name =            \
        BLOCKING_NOTIFIER_INIT(name)

Definition at line 106 of file notifier.h.

#define BLOCKING_NOTIFIER_INIT

(

name

)

Value:

{               \
        .rwsem = __RWSEM_INITIALIZER((name).rwsem), \
        .head = NULL }

Definition at line 96 of file notifier.h.

#define RAW_INIT_NOTIFIER_HEAD

(

name

)

Value:

do {    \
        (name)->head = NULL;        \
    } while (0)

Definition at line 84 of file notifier.h.

#define RAW_NOTIFIER_HEAD

(

name

)

Value:

struct raw_notifier_head name =             \
        RAW_NOTIFIER_INIT(name)

Definition at line 109 of file notifier.h.

#define RAW_NOTIFIER_INIT

(

name

)

Value:

{               \
        .head = NULL }

Definition at line 99 of file notifier.h.

#define srcu_cleanup_notifier_head

(

name

)

cleanup_srcu_struct(&(name)->srcu);

Definition at line 90 of file notifier.h.

Function Documentation

void srcu_init_notifier_head

(

struct srcu_notifier_head *

nh

)

srcu_init_notifier_head - Initialize an SRCU notifier head : Pointer to head of the srcu notifier chain

Unlike other sorts of notifier heads, SRCU notifier heads require dynamic initialization. Be sure to call this routine before calling any of the other SRCU notifier routines for this head.

If an SRCU notifier head is deallocated, it must first be cleaned up by calling srcu_cleanup_notifier_head(). Otherwise the head's per-cpu data (used by the SRCU mechanism) will leak.

Definition at line 519 of file notifier.c.