linux/arch/powerpc/include/asm/spinlock_types.h
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   1#ifndef _ASM_POWERPC_SPINLOCK_TYPES_H
   2#define _ASM_POWERPC_SPINLOCK_TYPES_H
   3
   4#ifndef __LINUX_SPINLOCK_TYPES_H
   5# error "please don't include this file directly"
   6#endif
   7
   8typedef struct {
   9        volatile unsigned int slock;
  10} arch_spinlock_t;
  11
  12#define __ARCH_SPIN_LOCK_UNLOCKED       { 0 }
  13
  14typedef struct {
  15        volatile signed int lock;
  16} arch_rwlock_t;
  17
  18#define __ARCH_RW_LOCK_UNLOCKED         { 0 }
  19
  20#endif
  21