linux/arch/x86/include/asm/spinlock_types.h
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   1#ifndef _ASM_X86_SPINLOCK_TYPES_H
   2#define _ASM_X86_SPINLOCK_TYPES_H
   3
   4#include <linux/types.h>
   5
   6#ifdef CONFIG_PARAVIRT_SPINLOCKS
   7#define __TICKET_LOCK_INC       2
   8#define TICKET_SLOWPATH_FLAG    ((__ticket_t)1)
   9#else
  10#define __TICKET_LOCK_INC       1
  11#define TICKET_SLOWPATH_FLAG    ((__ticket_t)0)
  12#endif
  13
  14#if (CONFIG_NR_CPUS < (256 / __TICKET_LOCK_INC))
  15typedef u8  __ticket_t;
  16typedef u16 __ticketpair_t;
  17#else
  18typedef u16 __ticket_t;
  19typedef u32 __ticketpair_t;
  20#endif
  21
  22#define TICKET_LOCK_INC ((__ticket_t)__TICKET_LOCK_INC)
  23
  24#define TICKET_SHIFT    (sizeof(__ticket_t) * 8)
  25
  26#include <asm-generic/qspinlock_types.h>
  27
  28#include <asm-generic/qrwlock_types.h>
  29
  30#endif /* _ASM_X86_SPINLOCK_TYPES_H */
  31