https://github.com/torvalds/linux
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Tip revision: d0e639c9e06d44e713170031fe05fb60ebe680af authored by Linus Torvalds on 06 October 2013, 21:00:20 UTC
Linux 3.12-rc4
Tip revision: d0e639c
sync_bitops.h
#ifndef _ASM_IA64_SYNC_BITOPS_H
#define _ASM_IA64_SYNC_BITOPS_H

/*
 * Copyright (C) 2008 Isaku Yamahata <yamahata at valinux co jp>
 *
 * Based on synch_bitops.h which Dan Magenhaimer wrote.
 *
 * bit operations which provide guaranteed strong synchronisation
 * when communicating with Xen or other guest OSes running on other CPUs.
 */

static inline void sync_set_bit(int nr, volatile void *addr)
{
	set_bit(nr, addr);
}

static inline void sync_clear_bit(int nr, volatile void *addr)
{
	clear_bit(nr, addr);
}

static inline void sync_change_bit(int nr, volatile void *addr)
{
	change_bit(nr, addr);
}

static inline int sync_test_and_set_bit(int nr, volatile void *addr)
{
	return test_and_set_bit(nr, addr);
}

static inline int sync_test_and_clear_bit(int nr, volatile void *addr)
{
	return test_and_clear_bit(nr, addr);
}

static inline int sync_test_and_change_bit(int nr, volatile void *addr)
{
	return test_and_change_bit(nr, addr);
}

static inline int sync_test_bit(int nr, const volatile void *addr)
{
	return test_bit(nr, addr);
}

#define sync_cmpxchg(ptr, old, new)				\
	((__typeof__(*(ptr)))cmpxchg_acq((ptr), (old), (new)))

#endif /* _ASM_IA64_SYNC_BITOPS_H */
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