44 lines
903 B
C
44 lines
903 B
C
#ifndef _ASM_X86_SPINLOCK_TYPES_H
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#define _ASM_X86_SPINLOCK_TYPES_H
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#include <linux/types.h>
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#ifdef CONFIG_PARAVIRT_SPINLOCKS
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#define __TICKET_LOCK_INC 2
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#define TICKET_SLOWPATH_FLAG ((__ticket_t)1)
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#else
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#define __TICKET_LOCK_INC 1
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#define TICKET_SLOWPATH_FLAG ((__ticket_t)0)
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#endif
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#if (CONFIG_NR_CPUS < (256 / __TICKET_LOCK_INC))
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typedef u8 __ticket_t;
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typedef u16 __ticketpair_t;
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#else
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typedef u16 __ticket_t;
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typedef u32 __ticketpair_t;
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#endif
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#define TICKET_LOCK_INC ((__ticket_t)__TICKET_LOCK_INC)
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#define TICKET_SHIFT (sizeof(__ticket_t) * 8)
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typedef struct arch_spinlock {
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union {
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__ticketpair_t head_tail;
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struct __raw_tickets {
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__ticket_t head, tail;
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} tickets;
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};
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} arch_spinlock_t;
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#define __ARCH_SPIN_LOCK_UNLOCKED { { 0 } }
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#ifdef CONFIG_QUEUE_RWLOCK
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#include <asm-generic/qrwlock_types.h>
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#else
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#include <asm/rwlock.h>
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#endif
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#endif /* _ASM_X86_SPINLOCK_TYPES_H */
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