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-rw-r--r--include/asm-x86/atomic_32.h143
1 files changed, 68 insertions, 75 deletions
diff --git a/include/asm-x86/atomic_32.h b/include/asm-x86/atomic_32.h
index 437aac80171..21a4825148c 100644
--- a/include/asm-x86/atomic_32.h
+++ b/include/asm-x86/atomic_32.h
@@ -15,138 +15,133 @@
* on us. We need to use _exactly_ the address the user gave us,
* not some alias that contains the same information.
*/
-typedef struct { int counter; } atomic_t;
+typedef struct {
+ int counter;
+} atomic_t;
#define ATOMIC_INIT(i) { (i) }
/**
* atomic_read - read atomic variable
* @v: pointer of type atomic_t
- *
+ *
* Atomically reads the value of @v.
- */
+ */
#define atomic_read(v) ((v)->counter)
/**
* atomic_set - set atomic variable
* @v: pointer of type atomic_t
* @i: required value
- *
+ *
* Atomically sets the value of @v to @i.
- */
-#define atomic_set(v,i) (((v)->counter) = (i))
+ */
+#define atomic_set(v, i) (((v)->counter) = (i))
/**
* atomic_add - add integer to atomic variable
* @i: integer value to add
* @v: pointer of type atomic_t
- *
+ *
* Atomically adds @i to @v.
*/
-static __inline__ void atomic_add(int i, atomic_t *v)
+static inline void atomic_add(int i, atomic_t *v)
{
- __asm__ __volatile__(
- LOCK_PREFIX "addl %1,%0"
- :"+m" (v->counter)
- :"ir" (i));
+ asm volatile(LOCK_PREFIX "addl %1,%0"
+ : "+m" (v->counter)
+ : "ir" (i));
}
/**
* atomic_sub - subtract integer from atomic variable
* @i: integer value to subtract
* @v: pointer of type atomic_t
- *
+ *
* Atomically subtracts @i from @v.
*/
-static __inline__ void atomic_sub(int i, atomic_t *v)
+static inline void atomic_sub(int i, atomic_t *v)
{
- __asm__ __volatile__(
- LOCK_PREFIX "subl %1,%0"
- :"+m" (v->counter)
- :"ir" (i));
+ asm volatile(LOCK_PREFIX "subl %1,%0"
+ : "+m" (v->counter)
+ : "ir" (i));
}
/**
* atomic_sub_and_test - subtract value from variable and test result
* @i: integer value to subtract
* @v: pointer of type atomic_t
- *
+ *
* Atomically subtracts @i from @v and returns
* true if the result is zero, or false for all
* other cases.
*/
-static __inline__ int atomic_sub_and_test(int i, atomic_t *v)
+static inline int atomic_sub_and_test(int i, atomic_t *v)
{
unsigned char c;
- __asm__ __volatile__(
- LOCK_PREFIX "subl %2,%0; sete %1"
- :"+m" (v->counter), "=qm" (c)
- :"ir" (i) : "memory");
+ asm volatile(LOCK_PREFIX "subl %2,%0; sete %1"
+ : "+m" (v->counter), "=qm" (c)
+ : "ir" (i) : "memory");
return c;
}
/**
* atomic_inc - increment atomic variable
* @v: pointer of type atomic_t
- *
+ *
* Atomically increments @v by 1.
- */
-static __inline__ void atomic_inc(atomic_t *v)
+ */
+static inline void atomic_inc(atomic_t *v)
{
- __asm__ __volatile__(
- LOCK_PREFIX "incl %0"
- :"+m" (v->counter));
+ asm volatile(LOCK_PREFIX "incl %0"
+ : "+m" (v->counter));
}
/**
* atomic_dec - decrement atomic variable
* @v: pointer of type atomic_t
- *
+ *
* Atomically decrements @v by 1.
- */
-static __inline__ void atomic_dec(atomic_t *v)
+ */
+static inline void atomic_dec(atomic_t *v)
{
- __asm__ __volatile__(
- LOCK_PREFIX "decl %0"
- :"+m" (v->counter));
+ asm volatile(LOCK_PREFIX "decl %0"
+ : "+m" (v->counter));
}
/**
* atomic_dec_and_test - decrement and test
* @v: pointer of type atomic_t
- *
+ *
* Atomically decrements @v by 1 and
* returns true if the result is 0, or false for all other
* cases.
- */
-static __inline__ int atomic_dec_and_test(atomic_t *v)
+ */
+static inline int atomic_dec_and_test(atomic_t *v)
{
unsigned char c;
- __asm__ __volatile__(
- LOCK_PREFIX "decl %0; sete %1"
- :"+m" (v->counter), "=qm" (c)
- : : "memory");
+ asm volatile(LOCK_PREFIX "decl %0; sete %1"
+ : "+m" (v->counter), "=qm" (c)
+ : : "memory");
return c != 0;
}
/**
- * atomic_inc_and_test - increment and test
+ * atomic_inc_and_test - increment and test
* @v: pointer of type atomic_t
- *
+ *
* Atomically increments @v by 1
* and returns true if the result is zero, or false for all
* other cases.
- */
-static __inline__ int atomic_inc_and_test(atomic_t *v)
+ */
+static inline int atomic_inc_and_test(atomic_t *v)
{
unsigned char c;
- __asm__ __volatile__(
- LOCK_PREFIX "incl %0; sete %1"
- :"+m" (v->counter), "=qm" (c)
- : : "memory");
+ asm volatile(LOCK_PREFIX "incl %0; sete %1"
+ : "+m" (v->counter), "=qm" (c)
+ : : "memory");
return c != 0;
}
@@ -154,19 +149,18 @@ static __inline__ int atomic_inc_and_test(atomic_t *v)
* atomic_add_negative - add and test if negative
* @v: pointer of type atomic_t
* @i: integer value to add
- *
+ *
* Atomically adds @i to @v and returns true
* if the result is negative, or false when
* result is greater than or equal to zero.
- */
-static __inline__ int atomic_add_negative(int i, atomic_t *v)
+ */
+static inline int atomic_add_negative(int i, atomic_t *v)
{
unsigned char c;
- __asm__ __volatile__(
- LOCK_PREFIX "addl %2,%0; sets %1"
- :"+m" (v->counter), "=qm" (c)
- :"ir" (i) : "memory");
+ asm volatile(LOCK_PREFIX "addl %2,%0; sets %1"
+ : "+m" (v->counter), "=qm" (c)
+ : "ir" (i) : "memory");
return c;
}
@@ -177,20 +171,19 @@ static __inline__ int atomic_add_negative(int i, atomic_t *v)
*
* Atomically adds @i to @v and returns @i + @v
*/
-static __inline__ int atomic_add_return(int i, atomic_t *v)
+static inline int atomic_add_return(int i, atomic_t *v)
{
int __i;
#ifdef CONFIG_M386
unsigned long flags;
- if(unlikely(boot_cpu_data.x86 <= 3))
+ if (unlikely(boot_cpu_data.x86 <= 3))
goto no_xadd;
#endif
/* Modern 486+ processor */
__i = i;
- __asm__ __volatile__(
- LOCK_PREFIX "xaddl %0, %1"
- :"+r" (i), "+m" (v->counter)
- : : "memory");
+ asm volatile(LOCK_PREFIX "xaddl %0, %1"
+ : "+r" (i), "+m" (v->counter)
+ : : "memory");
return i + __i;
#ifdef CONFIG_M386
@@ -210,9 +203,9 @@ no_xadd: /* Legacy 386 processor */
*
* Atomically subtracts @i from @v and returns @v - @i
*/
-static __inline__ int atomic_sub_return(int i, atomic_t *v)
+static inline int atomic_sub_return(int i, atomic_t *v)
{
- return atomic_add_return(-i,v);
+ return atomic_add_return(-i, v);
}
#define atomic_cmpxchg(v, old, new) (cmpxchg(&((v)->counter), (old), (new)))
@@ -227,7 +220,7 @@ static __inline__ int atomic_sub_return(int i, atomic_t *v)
* Atomically adds @a to @v, so long as @v was not already @u.
* Returns non-zero if @v was not @u, and zero otherwise.
*/
-static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
+static inline int atomic_add_unless(atomic_t *v, int a, int u)
{
int c, old;
c = atomic_read(v);
@@ -244,17 +237,17 @@ static __inline__ int atomic_add_unless(atomic_t *v, int a, int u)
#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
-#define atomic_inc_return(v) (atomic_add_return(1,v))
-#define atomic_dec_return(v) (atomic_sub_return(1,v))
+#define atomic_inc_return(v) (atomic_add_return(1, v))
+#define atomic_dec_return(v) (atomic_sub_return(1, v))
/* These are x86-specific, used by some header files */
-#define atomic_clear_mask(mask, addr) \
-__asm__ __volatile__(LOCK_PREFIX "andl %0,%1" \
-: : "r" (~(mask)),"m" (*addr) : "memory")
+#define atomic_clear_mask(mask, addr) \
+ asm volatile(LOCK_PREFIX "andl %0,%1" \
+ : : "r" (~(mask)), "m" (*(addr)) : "memory")
-#define atomic_set_mask(mask, addr) \
-__asm__ __volatile__(LOCK_PREFIX "orl %0,%1" \
-: : "r" (mask),"m" (*(addr)) : "memory")
+#define atomic_set_mask(mask, addr) \
+ asm volatile(LOCK_PREFIX "orl %0,%1" \
+ : : "r" (mask), "m" (*(addr)) : "memory")
/* Atomic operations are already serializing on x86 */
#define smp_mb__before_atomic_dec() barrier()
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-26 00:06:29 +0000