[mirror_ubuntu-bionic-kernel.git] / arch / arm / include / asm / spinlock_types.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_SPINLOCK_TYPES_H
#define __ASM_SPINLOCK_TYPES_H

#ifndef __LINUX_SPINLOCK_TYPES_H
# error "please don't include this file directly"
#endif

#define TICKET_SHIFT	16

typedef struct {
	union {
		u32 slock;
		struct __raw_tickets {
#ifdef __ARMEB__
			u16 next;
			u16 owner;
#else
			u16 owner;
			u16 next;
#endif
		} tickets;
	};
} arch_spinlock_t;

#define __ARCH_SPIN_LOCK_UNLOCKED	{ { 0 } }

typedef struct {
	u32 lock;
} arch_rwlock_t;

#define __ARCH_RW_LOCK_UNLOCKED		{ 0 }

#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
fb1c8f93 IM	2	#ifndef __ASM_SPINLOCK_TYPES_H
	3	#define __ASM_SPINLOCK_TYPES_H
	4
	5	#ifndef __LINUX_SPINLOCK_TYPES_H
	6	# error "please don't include this file directly"
	7	#endif
	8
546c2896 WD	9	#define TICKET_SHIFT 16
546c2896 WD	10
fb1c8f93	11	typedef struct {
546c2896 WD	12	union {
	13	u32 slock;
	14	struct __raw_tickets {
	15	#ifdef __ARMEB__
	16	u16 next;
	17	u16 owner;
	18	#else
	19	u16 owner;
	20	u16 next;
	21	#endif
	22	} tickets;
	23	};
445c8951	24	} arch_spinlock_t;
fb1c8f93	25
546c2896	26	#define __ARCH_SPIN_LOCK_UNLOCKED { { 0 } }
fb1c8f93 IM	27
fb1c8f93 IM	28	typedef struct {
9bb17be0	29	u32 lock;
fb3a6bbc	30	} arch_rwlock_t;
fb1c8f93	31
fb3a6bbc	32	#define __ARCH_RW_LOCK_UNLOCKED { 0 }
fb1c8f93 IM	33
fb1c8f93 IM	34	#endif