111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/**************************************************************************** 211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert **************************************************************************** 311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert *** 411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert *** This header was automatically generated from a Linux kernel header 511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert *** of the same name, to make information necessary for userspace to 611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert *** call into the kernel available to libc. It contains only constants, 711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert *** structures, and macros generated from the original header, and thus, 811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert *** contains no copyrightable information. 911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert *** 1011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert **************************************************************************** 1111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert ****************************************************************************/ 1211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#ifndef __LINUX_MUTEX_H 1311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __LINUX_MUTEX_H 1411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 1511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <linux/list.h> 1611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <linux/spinlock_types.h> 1711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <linux/linkage.h> 1811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <linux/lockdep.h> 1911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 2011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <asm/atomic.h> 2111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 2211cd02dfb91661c65134cac258cf5924270e9d2Dan Albertstruct mutex { 2311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 2411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert atomic_t count; 2511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert spinlock_t wait_lock; 2611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert struct list_head wait_list; 2711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert}; 2811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 2911cd02dfb91661c65134cac258cf5924270e9d2Dan Albertstruct mutex_waiter { 3011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert struct list_head list; 3111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert struct task_struct *task; 3211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert}; 3311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 3411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __DEBUG_MUTEX_INITIALIZER(lockname) 3511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define mutex_init(mutex) do { static struct lock_class_key __key; __mutex_init((mutex), #mutex, &__key); } while (0) 3611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define mutex_destroy(mutex) do { } while (0) 3711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 3811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __DEP_MAP_MUTEX_INITIALIZER(lockname) 3911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 4011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __MUTEX_INITIALIZER(lockname) { .count = ATOMIC_INIT(1) , .wait_lock = SPIN_LOCK_UNLOCKED , .wait_list = LIST_HEAD_INIT(lockname.wait_list) __DEBUG_MUTEX_INITIALIZER(lockname) __DEP_MAP_MUTEX_INITIALIZER(lockname) } 4111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 4211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define DEFINE_MUTEX(mutexname) struct mutex mutexname = __MUTEX_INITIALIZER(mutexname) 4311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 4411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define mutex_lock_nested(lock, subclass) mutex_lock(lock) 4511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 4611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 47