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