spinlock_types.h

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#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 {
    volatile unsigned int lock;
} arch_rwlock_t;

#define __ARCH_RW_LOCK_UNLOCKED     { 0 }

#endif