Commit ffbf670f authored by Ingo Molnar's avatar Ingo Molnar Committed by Ingo Molnar
Browse files

[PATCH] mutex subsystem, add atomic_xchg() to all arches 



add atomic_xchg() to all the architectures. Needed by the new mutex code.

Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarArjan van de Ven <arjan@infradead.org>
parent f17578de

include/asm-alpha/atomic.h

+1 −0
Original line number Diff line number Diff line
@@ -176,6 +176,7 @@ static __inline__ long atomic64_sub_return(long i, atomic64_t * v) 
}



#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))

#define atomic_xchg(v, new) (xchg(&((v)->counter), new))



#define atomic_add_unless(v, a, u)				\

({								\

include/asm-arm/atomic.h

+2 −0
Original line number Diff line number Diff line
@@ -175,6 +175,8 @@ static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr) 


#endif /* __LINUX_ARM_ARCH__ */



#define atomic_xchg(v, new) (xchg(&((v)->counter), new))



static inline int atomic_add_unless(atomic_t *v, int a, int u)

{

	int c, old;

include/asm-arm26/atomic.h

+2 −0
Original line number Diff line number Diff line
@@ -76,6 +76,8 @@ static inline int atomic_cmpxchg(atomic_t *v, int old, int new) 
	return ret;

}



#define atomic_xchg(v, new) (xchg(&((v)->counter), new))



static inline int atomic_add_unless(atomic_t *v, int a, int u)

{

	int ret;

include/asm-cris/atomic.h

+2 −0
Original line number Diff line number Diff line
@@ -136,6 +136,8 @@ static inline int atomic_cmpxchg(atomic_t *v, int old, int new) 
	return ret;

}



#define atomic_xchg(v, new) (xchg(&((v)->counter), new))



static inline int atomic_add_unless(atomic_t *v, int a, int u)

{

	int ret;

include/asm-frv/atomic.h

+1 −0
Original line number Diff line number Diff line
@@ -328,6 +328,7 @@ extern uint32_t __cmpxchg_32(uint32_t *v, uint32_t test, uint32_t new); 
#endif



#define atomic_cmpxchg(v, old, new) (cmpxchg(&((v)->counter), old, new))

#define atomic_xchg(v, new) (xchg(&((v)->counter), new))



#define atomic_add_unless(v, a, u)				\

({								\