X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-cris%2Fatomic.h;h=2949a945876a5c4685197927426809a61ee03999;hb=0048e1c44a4529d4ea93e6920fa5468730c68c94;hp=70605b09e8b73a324affede0a8887807275fe1c1;hpb=c0d6f9663b30a09ed725229b2d50391268c8538e;p=linux-2.6

diff --git a/include/asm-cris/atomic.h b/include/asm-cris/atomic.h
index 70605b09e8..2949a94587 100644
--- a/include/asm-cris/atomic.h
+++ b/include/asm-cris/atomic.h
@@ -3,6 +3,8 @@
 #ifndef __ASM_CRIS_ATOMIC__
 #define __ASM_CRIS_ATOMIC__
 
+#include <linux/compiler.h>
+
 #include <asm/system.h>
 #include <asm/arch/atomic.h>
 
@@ -20,7 +22,7 @@ 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 +30,7 @@ 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 +38,7 @@ 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 +50,7 @@ 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 +60,7 @@ 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 +70,7 @@ 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 +78,7 @@ 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 +86,7 @@ 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 +96,7 @@ 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 +105,7 @@ 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 +115,7 @@ 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;
@@ -123,10 +125,40 @@ 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;
+}
+
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+
+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()
 #define smp_mb__before_atomic_inc()    barrier()
 #define smp_mb__after_atomic_inc()     barrier()
 
+#include <asm-generic/atomic.h>
 #endif