/* #define CAA_CACHE_LINE_SIZE 64 */
#define ____cacheline_internodealigned_in_smp \
- __attribute__((__aligned__(1 << 6)))
-
-#define LOCK_PREFIX "lock ; "
-
-#if 0 /* duplicate with arch_atomic.h */
-
-/*
- * Atomic data structure, initialization, and access.
- */
-
-typedef struct { volatile int counter; } atomic_t;
-
-#define ATOMIC_INIT(i) { (i) }
-
-#define atomic_read(v) ((v)->counter)
-#define atomic_set(v, i) (((v)->counter) = (i))
-
-/*
- * Atomic operations.
- */
-
-/**
- * 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)
-{
- __asm__ __volatile__(
- LOCK_PREFIX "addl %1,%0"
- :"+m" (v->counter)
- :"ir" (i));
-}
-
-/**
- * atomic_sub - subtract the 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)
-{
- __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)
-{
- unsigned char c;
-
- __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)
-{
- __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)
-{
- __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)
-{
- unsigned char c;
-
- __asm__ __volatile__(
- LOCK_PREFIX "decl %0; sete %1"
- :"+m" (v->counter), "=qm" (c)
- : : "memory");
- return c != 0;
-}
-
-/**
- * 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)
-{
- unsigned char c;
-
- __asm__ __volatile__(
- LOCK_PREFIX "incl %0; sete %1"
- :"+m" (v->counter), "=qm" (c)
- : : "memory");
- return c != 0;
-}
-
-/**
- * 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)
-{
- unsigned char c;
-
- __asm__ __volatile__(
- LOCK_PREFIX "addl %2,%0; sets %1"
- :"+m" (v->counter), "=qm" (c)
- :"ir" (i) : "memory");
- return c;
-}
-
-/**
- * atomic_add_return - add and return
- * @v: pointer of type atomic_t
- * @i: integer value to add
- *
- * Atomically adds @i to @v and returns @i + @v
- */
-static __inline__ int atomic_add_return(int i, atomic_t *v)
-{
- int __i;
-
- __i = i;
- __asm__ __volatile__(
- LOCK_PREFIX "xaddl %0, %1;"
- :"=r"(i)
- :"m"(v->counter), "0"(i));
- return i + __i;
-}
-
-static __inline__ int atomic_sub_return(int i, atomic_t *v)
-{
- return atomic_add_return(-i,v);
-}
-
-static inline unsigned int
-cmpxchg(volatile long *ptr, long oldval, long newval)
-{
- unsigned long retval;
-
- asm("# cmpxchg\n"
- "lock; cmpxchgl %4,(%2)\n"
- "# end atomic_cmpxchg4"
- : "=a" (retval), "=m" (*ptr)
- : "r" (ptr), "0" (oldval), "r" (newval), "m" (*ptr)
- : "cc");
- return (retval);
-}
-
-#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
- * @v: pointer of type atomic_t
- * @a: the amount to add to v...
- * @u: ...unless v is equal to u.
- *
- * Atomically adds @a to @v, so long as it was not @u.
- * Returns non-zero if @v was not @u, and zero otherwise.
- */
-#define atomic_add_unless(v, a, u) \
-({ \
- int c, old; \
- c = atomic_read(v); \
- for (;;) { \
- if (unlikely(c == (u))) \
- break; \
- old = atomic_cmpxchg((v), c, c + (a)); \
- if (likely(old == c)) \
- break; \
- c = old; \
- } \
- c != (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))
-
-/* 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_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() cmm_barrier()
-#define smp_mb__after_atomic_dec() cmm_barrier()
-#define smp_mb__before_atomic_inc() cmm_barrier()
-#define smp_mb__after_atomic_inc() cmm_barrier()
-
-#endif //0
+ __attribute__((__aligned__(CAA_CACHE_LINE_SIZE)))
/*
* api_pthreads.h: API mapping to pthreads environment.
projects / urcu.git / blobdiff