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Linux/arch/ia64/include/asm/sync_bitops.h

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  1 #ifndef _ASM_IA64_SYNC_BITOPS_H
  2 #define _ASM_IA64_SYNC_BITOPS_H
  3 
  4 /*
  5  * Copyright (C) 2008 Isaku Yamahata <yamahata at valinux co jp>
  6  *
  7  * Based on synch_bitops.h which Dan Magenhaimer wrote.
  8  *
  9  * bit operations which provide guaranteed strong synchronisation
 10  * when communicating with Xen or other guest OSes running on other CPUs.
 11  */
 12 
 13 static inline void sync_set_bit(int nr, volatile void *addr)
 14 {
 15         set_bit(nr, addr);
 16 }
 17 
 18 static inline void sync_clear_bit(int nr, volatile void *addr)
 19 {
 20         clear_bit(nr, addr);
 21 }
 22 
 23 static inline void sync_change_bit(int nr, volatile void *addr)
 24 {
 25         change_bit(nr, addr);
 26 }
 27 
 28 static inline int sync_test_and_set_bit(int nr, volatile void *addr)
 29 {
 30         return test_and_set_bit(nr, addr);
 31 }
 32 
 33 static inline int sync_test_and_clear_bit(int nr, volatile void *addr)
 34 {
 35         return test_and_clear_bit(nr, addr);
 36 }
 37 
 38 static inline int sync_test_and_change_bit(int nr, volatile void *addr)
 39 {
 40         return test_and_change_bit(nr, addr);
 41 }
 42 
 43 static inline int sync_test_bit(int nr, const volatile void *addr)
 44 {
 45         return test_bit(nr, addr);
 46 }
 47 
 48 #define sync_cmpxchg(ptr, old, new)                             \
 49         ((__typeof__(*(ptr)))cmpxchg_acq((ptr), (old), (new)))
 50 
 51 #endif /* _ASM_IA64_SYNC_BITOPS_H */
 52 

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