1#ifndef __ASM_GENERIC_QRWLOCK_TYPES_H
 2#define __ASM_GENERIC_QRWLOCK_TYPES_H
 3
 4#include <linux/types.h>
 
 5#include <asm/spinlock_types.h>
 6
 7/*
 8 * The queue read/write lock data structure
 9 */
10
11typedef struct qrwlock {
12	atomic_t		cnts;
 
 
 
 
 
 
 
 
 
 
 
13	arch_spinlock_t		wait_lock;
14} arch_rwlock_t;
15
16#define	__ARCH_RW_LOCK_UNLOCKED {		\
17	.cnts = ATOMIC_INIT(0),			\
18	.wait_lock = __ARCH_SPIN_LOCK_UNLOCKED,	\
19}
20
21#endif /* __ASM_GENERIC_QRWLOCK_TYPES_H */

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef __ASM_GENERIC_QRWLOCK_TYPES_H
 3#define __ASM_GENERIC_QRWLOCK_TYPES_H
 4
 5#include <linux/types.h>
 6#include <asm/byteorder.h>
 7#include <asm/spinlock_types.h>
 8
 9/*
10 * The queue read/write lock data structure
11 */
12
13typedef struct qrwlock {
14	union {
15		atomic_t cnts;
16		struct {
17#ifdef __LITTLE_ENDIAN
18			u8 wlocked;	/* Locked for write? */
19			u8 __lstate[3];
20#else
21			u8 __lstate[3];
22			u8 wlocked;	/* Locked for write? */
23#endif
24		};
25	};
26	arch_spinlock_t		wait_lock;
27} arch_rwlock_t;
28
29#define	__ARCH_RW_LOCK_UNLOCKED {		\
30	{ .cnts = ATOMIC_INIT(0), },		\
31	.wait_lock = __ARCH_SPIN_LOCK_UNLOCKED,	\
32}
33
34#endif /* __ASM_GENERIC_QRWLOCK_TYPES_H */