root/arch/x86/include/asm/spinlock_types.h

/* [<][>][^][v][top][bottom][index][help] */

INCLUDED FROM

#ifndef _ASM_X86_SPINLOCK_TYPES_H
#define _ASM_X86_SPINLOCK_TYPES_H

#include <linux/types.h>

#ifdef CONFIG_PARAVIRT_SPINLOCKS
#define __TICKET_LOCK_INC       2
#define TICKET_SLOWPATH_FLAG    ((__ticket_t)1)
#else
#define __TICKET_LOCK_INC       1
#define TICKET_SLOWPATH_FLAG    ((__ticket_t)0)
#endif

#if (CONFIG_NR_CPUS < (256 / __TICKET_LOCK_INC))
typedef u8  __ticket_t;
typedef u16 __ticketpair_t;
#else
typedef u16 __ticket_t;
typedef u32 __ticketpair_t;
#endif

#define TICKET_LOCK_INC ((__ticket_t)__TICKET_LOCK_INC)

#define TICKET_SHIFT    (sizeof(__ticket_t) * 8)

typedef struct arch_spinlock {
        union {
                __ticketpair_t head_tail;
                struct __raw_tickets {
                        __ticket_t head, tail;
                } tickets;
        };
} arch_spinlock_t;

#define __ARCH_SPIN_LOCK_UNLOCKED       { { 0 } }

#include <asm-generic/qrwlock_types.h>

#endif /* _ASM_X86_SPINLOCK_TYPES_H */
/* [<][>][^][v][top][bottom][index][help] */