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Diffstat (limited to 'include/asm-x86/local_64.h')
-rw-r--r--include/asm-x86/local_64.h222
1 files changed, 0 insertions, 222 deletions
diff --git a/include/asm-x86/local_64.h b/include/asm-x86/local_64.h
deleted file mode 100644
index e87492bb0693..000000000000
--- a/include/asm-x86/local_64.h
+++ /dev/null
@@ -1,222 +0,0 @@
-#ifndef _ARCH_X8664_LOCAL_H
-#define _ARCH_X8664_LOCAL_H
-
-#include <linux/percpu.h>
-#include <asm/atomic.h>
-
-typedef struct
-{
- atomic_long_t a;
-} local_t;
-
-#define LOCAL_INIT(i) { ATOMIC_LONG_INIT(i) }
-
-#define local_read(l) atomic_long_read(&(l)->a)
-#define local_set(l,i) atomic_long_set(&(l)->a, (i))
-
-static inline void local_inc(local_t *l)
-{
- __asm__ __volatile__(
- "incq %0"
- :"=m" (l->a.counter)
- :"m" (l->a.counter));
-}
-
-static inline void local_dec(local_t *l)
-{
- __asm__ __volatile__(
- "decq %0"
- :"=m" (l->a.counter)
- :"m" (l->a.counter));
-}
-
-static inline void local_add(long i, local_t *l)
-{
- __asm__ __volatile__(
- "addq %1,%0"
- :"=m" (l->a.counter)
- :"ir" (i), "m" (l->a.counter));
-}
-
-static inline void local_sub(long i, local_t *l)
-{
- __asm__ __volatile__(
- "subq %1,%0"
- :"=m" (l->a.counter)
- :"ir" (i), "m" (l->a.counter));
-}
-
-/**
- * local_sub_and_test - subtract value from variable and test result
- * @i: integer value to subtract
- * @l: pointer to type local_t
- *
- * Atomically subtracts @i from @l and returns
- * true if the result is zero, or false for all
- * other cases.
- */
-static __inline__ int local_sub_and_test(long i, local_t *l)
-{
- unsigned char c;
-
- __asm__ __volatile__(
- "subq %2,%0; sete %1"
- :"=m" (l->a.counter), "=qm" (c)
- :"ir" (i), "m" (l->a.counter) : "memory");
- return c;
-}
-
-/**
- * local_dec_and_test - decrement and test
- * @l: pointer to type local_t
- *
- * Atomically decrements @l by 1 and
- * returns true if the result is 0, or false for all other
- * cases.
- */
-static __inline__ int local_dec_and_test(local_t *l)
-{
- unsigned char c;
-
- __asm__ __volatile__(
- "decq %0; sete %1"
- :"=m" (l->a.counter), "=qm" (c)
- :"m" (l->a.counter) : "memory");
- return c != 0;
-}
-
-/**
- * local_inc_and_test - increment and test
- * @l: pointer to type local_t
- *
- * Atomically increments @l by 1
- * and returns true if the result is zero, or false for all
- * other cases.
- */
-static __inline__ int local_inc_and_test(local_t *l)
-{
- unsigned char c;
-
- __asm__ __volatile__(
- "incq %0; sete %1"
- :"=m" (l->a.counter), "=qm" (c)
- :"m" (l->a.counter) : "memory");
- return c != 0;
-}
-
-/**
- * local_add_negative - add and test if negative
- * @i: integer value to add
- * @l: pointer to type local_t
- *
- * Atomically adds @i to @l and returns true
- * if the result is negative, or false when
- * result is greater than or equal to zero.
- */
-static __inline__ int local_add_negative(long i, local_t *l)
-{
- unsigned char c;
-
- __asm__ __volatile__(
- "addq %2,%0; sets %1"
- :"=m" (l->a.counter), "=qm" (c)
- :"ir" (i), "m" (l->a.counter) : "memory");
- return c;
-}
-
-/**
- * local_add_return - add and return
- * @i: integer value to add
- * @l: pointer to type local_t
- *
- * Atomically adds @i to @l and returns @i + @l
- */
-static __inline__ long local_add_return(long i, local_t *l)
-{
- long __i = i;
- __asm__ __volatile__(
- "xaddq %0, %1;"
- :"+r" (i), "+m" (l->a.counter)
- : : "memory");
- return i + __i;
-}
-
-static __inline__ long local_sub_return(long i, local_t *l)
-{
- return local_add_return(-i,l);
-}
-
-#define local_inc_return(l) (local_add_return(1,l))
-#define local_dec_return(l) (local_sub_return(1,l))
-
-#define local_cmpxchg(l, o, n) \
- (cmpxchg_local(&((l)->a.counter), (o), (n)))
-/* Always has a lock prefix */
-#define local_xchg(l, n) (xchg(&((l)->a.counter), (n)))
-
-/**
- * atomic_up_add_unless - add unless the number is a given value
- * @l: pointer of type local_t
- * @a: the amount to add to l...
- * @u: ...unless l is equal to u.
- *
- * Atomically adds @a to @l, so long as it was not @u.
- * Returns non-zero if @l was not @u, and zero otherwise.
- */
-#define local_add_unless(l, a, u) \
-({ \
- long c, old; \
- c = local_read(l); \
- for (;;) { \
- if (unlikely(c == (u))) \
- break; \
- old = local_cmpxchg((l), c, c + (a)); \
- if (likely(old == c)) \
- break; \
- c = old; \
- } \
- c != (u); \
-})
-#define local_inc_not_zero(l) local_add_unless((l), 1, 0)
-
-/* On x86-64 these are better than the atomic variants on SMP kernels
- because they dont use a lock prefix. */
-#define __local_inc(l) local_inc(l)
-#define __local_dec(l) local_dec(l)
-#define __local_add(i,l) local_add((i),(l))
-#define __local_sub(i,l) local_sub((i),(l))
-
-/* Use these for per-cpu local_t variables: on some archs they are
- * much more efficient than these naive implementations. Note they take
- * a variable, not an address.
- *
- * This could be done better if we moved the per cpu data directly
- * after GS.
- */
-
-/* Need to disable preemption for the cpu local counters otherwise we could
- still access a variable of a previous CPU in a non atomic way. */
-#define cpu_local_wrap_v(l) \
- ({ local_t res__; \
- preempt_disable(); \
- res__ = (l); \
- preempt_enable(); \
- res__; })
-#define cpu_local_wrap(l) \
- ({ preempt_disable(); \
- l; \
- preempt_enable(); }) \
-
-#define cpu_local_read(l) cpu_local_wrap_v(local_read(&__get_cpu_var(l)))
-#define cpu_local_set(l, i) cpu_local_wrap(local_set(&__get_cpu_var(l), (i)))
-#define cpu_local_inc(l) cpu_local_wrap(local_inc(&__get_cpu_var(l)))
-#define cpu_local_dec(l) cpu_local_wrap(local_dec(&__get_cpu_var(l)))
-#define cpu_local_add(i, l) cpu_local_wrap(local_add((i), &__get_cpu_var(l)))
-#define cpu_local_sub(i, l) cpu_local_wrap(local_sub((i), &__get_cpu_var(l)))
-
-#define __cpu_local_inc(l) cpu_local_inc(l)
-#define __cpu_local_dec(l) cpu_local_dec(l)
-#define __cpu_local_add(i, l) cpu_local_add((i), (l))
-#define __cpu_local_sub(i, l) cpu_local_sub((i), (l))
-
-#endif /* _ARCH_X8664_LOCAL_H */