linux-sg2042/arch/ia64/include/asm/sync_bitops.h

52 lines
1.2 KiB
C

#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 */