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Diffstat (limited to 'include/asm-cris/atomic.h')
-rw-r--r--include/asm-cris/atomic.h49
1 files changed, 38 insertions, 11 deletions
diff --git a/include/asm-cris/atomic.h b/include/asm-cris/atomic.h
index 70605b09e8b..683b05a57d8 100644
--- a/include/asm-cris/atomic.h
+++ b/include/asm-cris/atomic.h
@@ -20,7 +20,7 @@ typedef struct { volatile int counter; } atomic_t;
/* These should be written in asm but we do it in C for now. */
-extern __inline__ void atomic_add(int i, volatile atomic_t *v)
+static inline void atomic_add(int i, volatile atomic_t *v)
{
unsigned long flags;
cris_atomic_save(v, flags);
@@ -28,7 +28,7 @@ extern __inline__ void atomic_add(int i, volatile atomic_t *v)
cris_atomic_restore(v, flags);
}
-extern __inline__ void atomic_sub(int i, volatile atomic_t *v)
+static inline void atomic_sub(int i, volatile atomic_t *v)
{
unsigned long flags;
cris_atomic_save(v, flags);
@@ -36,7 +36,7 @@ extern __inline__ void atomic_sub(int i, volatile atomic_t *v)
cris_atomic_restore(v, flags);
}
-extern __inline__ int atomic_add_return(int i, volatile atomic_t *v)
+static inline int atomic_add_return(int i, volatile atomic_t *v)
{
unsigned long flags;
int retval;
@@ -48,7 +48,7 @@ extern __inline__ int atomic_add_return(int i, volatile atomic_t *v)
#define atomic_add_negative(a, v) (atomic_add_return((a), (v)) < 0)
-extern __inline__ int atomic_sub_return(int i, volatile atomic_t *v)
+static inline int atomic_sub_return(int i, volatile atomic_t *v)
{
unsigned long flags;
int retval;
@@ -58,7 +58,7 @@ extern __inline__ int atomic_sub_return(int i, volatile atomic_t *v)
return retval;
}
-extern __inline__ int atomic_sub_and_test(int i, volatile atomic_t *v)
+static inline int atomic_sub_and_test(int i, volatile atomic_t *v)
{
int retval;
unsigned long flags;
@@ -68,7 +68,7 @@ extern __inline__ int atomic_sub_and_test(int i, volatile atomic_t *v)
return retval;
}
-extern __inline__ void atomic_inc(volatile atomic_t *v)
+static inline void atomic_inc(volatile atomic_t *v)
{
unsigned long flags;
cris_atomic_save(v, flags);
@@ -76,7 +76,7 @@ extern __inline__ void atomic_inc(volatile atomic_t *v)
cris_atomic_restore(v, flags);
}
-extern __inline__ void atomic_dec(volatile atomic_t *v)
+static inline void atomic_dec(volatile atomic_t *v)
{
unsigned long flags;
cris_atomic_save(v, flags);
@@ -84,7 +84,7 @@ extern __inline__ void atomic_dec(volatile atomic_t *v)
cris_atomic_restore(v, flags);
}
-extern __inline__ int atomic_inc_return(volatile atomic_t *v)
+static inline int atomic_inc_return(volatile atomic_t *v)
{
unsigned long flags;
int retval;
@@ -94,7 +94,7 @@ extern __inline__ int atomic_inc_return(volatile atomic_t *v)
return retval;
}
-extern __inline__ int atomic_dec_return(volatile atomic_t *v)
+static inline int atomic_dec_return(volatile atomic_t *v)
{
unsigned long flags;
int retval;
@@ -103,7 +103,7 @@ extern __inline__ int atomic_dec_return(volatile atomic_t *v)
cris_atomic_restore(v, flags);
return retval;
}
-extern __inline__ int atomic_dec_and_test(volatile atomic_t *v)
+static inline int atomic_dec_and_test(volatile atomic_t *v)
{
int retval;
unsigned long flags;
@@ -113,7 +113,7 @@ extern __inline__ int atomic_dec_and_test(volatile atomic_t *v)
return retval;
}
-extern __inline__ int atomic_inc_and_test(volatile atomic_t *v)
+static inline int atomic_inc_and_test(volatile atomic_t *v)
{
int retval;
unsigned long flags;
@@ -123,6 +123,33 @@ extern __inline__ int atomic_inc_and_test(volatile atomic_t *v)
return retval;
}
+static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
+{
+ int ret;
+ unsigned long flags;
+
+ cris_atomic_save(v, flags);
+ ret = v->counter;
+ if (likely(ret == old))
+ v->counter = new;
+ cris_atomic_restore(v, flags);
+ return ret;
+}
+
+static inline int atomic_add_unless(atomic_t *v, int a, int u)
+{
+ int ret;
+ unsigned long flags;
+
+ cris_atomic_save(v, flags);
+ ret = v->counter;
+ if (ret != u)
+ v->counter += a;
+ cris_atomic_restore(v, flags);
+ return ret != u;
+}
+#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+
/* Atomic operations are already serializing */
#define smp_mb__before_atomic_dec() barrier()
#define smp_mb__after_atomic_dec() barrier()