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
......@@ -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) \
({ \
......
......@@ -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;
......
......@@ -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;
......
......@@ -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;
......
......@@ -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) \
({ \
......
......@@ -95,6 +95,8 @@ 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;
......
......@@ -216,6 +216,7 @@ static __inline__ int atomic_sub_return(int i, atomic_t *v)
}
#define atomic_cmpxchg(v, old, new) ((int)cmpxchg(&((v)->counter), old, new))
#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
/**
* atomic_add_unless - add unless the number is a given value
......
......@@ -89,6 +89,7 @@ ia64_atomic64_sub (__s64 i, atomic64_t *v)
}
#define atomic_cmpxchg(v, old, new) ((int)cmpxchg(&((v)->counter), old, new))
#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
#define atomic_add_unless(v, a, u) \
({ \
......
......@@ -243,6 +243,7 @@ static __inline__ int atomic_dec_return(atomic_t *v)
#define atomic_add_negative(i,v) (atomic_add_return((i), (v)) < 0)
#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
/**
* atomic_add_unless - add unless the number is a given value
......
......@@ -140,6 +140,7 @@ static inline void atomic_set_mask(unsigned long mask, unsigned long *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) \
({ \
......
......@@ -129,6 +129,7 @@ static inline int atomic_sub_return(int i, atomic_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) \
({ \
......
......@@ -289,6 +289,7 @@ static __inline__ int atomic_sub_if_positive(int i, atomic_t * v)
}
#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
/**
* atomic_add_unless - add unless the number is a given value
......
......@@ -165,6 +165,7 @@ static __inline__ int atomic_read(const atomic_t *v)
/* exported interface */
#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
/**
* atomic_add_unless - add unless the number is a given value
......
......@@ -165,6 +165,7 @@ static __inline__ int atomic_dec_return(atomic_t *v)
}
#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
/**
* atomic_add_unless - add unless the number is a given value
......
......@@ -75,6 +75,8 @@ static __inline__ void atomic_set_mask(unsigned long mask, atomic_t * v)
__CS_LOOP(v, mask, "or");
}
#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
static __inline__ int atomic_cmpxchg(atomic_t *v, int old, int new)
{
__asm__ __volatile__(" cs %0,%3,0(%2)\n"
......
......@@ -101,6 +101,8 @@ 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;
......
......@@ -113,6 +113,8 @@ 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;
......
......@@ -20,6 +20,7 @@ typedef struct { volatile int counter; } atomic_t;
extern int __atomic_add_return(int, atomic_t *);
extern int atomic_cmpxchg(atomic_t *, int, int);
#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
extern int atomic_add_unless(atomic_t *, int, int);
extern void atomic_set(atomic_t *, int);
......
......@@ -72,6 +72,7 @@ extern int atomic64_sub_ret(int, atomic64_t *);
#define atomic64_add_negative(i, v) (atomic64_add_ret(i, v) < 0)
#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) \
({ \
......
......@@ -104,6 +104,8 @@ 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;
......
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