Staging
v0.7.0
v0.7.0
spinlock_types.h
#ifndef _ASM_SPINLOCK_TYPES_H
#define _ASM_SPINLOCK_TYPES_H
#ifndef __LINUX_SPINLOCK_TYPES_H
# error "please don't include this file directly"
#endif
#include <linux/types.h>
#include <asm/byteorder.h>
typedef union {
/*
* bits 0..15 : serving_now
* bits 16..31 : ticket
*/
u32 lock;
struct {
#ifdef __BIG_ENDIAN
u16 ticket;
u16 serving_now;
#else
u16 serving_now;
u16 ticket;
#endif
} h;
} arch_spinlock_t;
#define __ARCH_SPIN_LOCK_UNLOCKED { .lock = 0 }
typedef struct {
volatile unsigned int lock;
} arch_rwlock_t;
#define __ARCH_RW_LOCK_UNLOCKED { 0 }
#endif