diff options
Diffstat (limited to 'include/asm-i386/local.h')
| -rw-r--r-- | include/asm-i386/local.h | 82 |
1 files changed, 0 insertions, 82 deletions
diff --git a/include/asm-i386/local.h b/include/asm-i386/local.h deleted file mode 100644 index 12060e22f7e..00000000000 --- a/include/asm-i386/local.h +++ /dev/null @@ -1,82 +0,0 @@ -#ifndef _ARCH_I386_LOCAL_H -#define _ARCH_I386_LOCAL_H - -#include <linux/percpu.h> - -typedef struct -{ - volatile long counter; -} local_t; - -#define LOCAL_INIT(i) { (i) } - -#define local_read(v) ((v)->counter) -#define local_set(v,i) (((v)->counter) = (i)) - -static __inline__ void local_inc(local_t *v) -{ - __asm__ __volatile__( - "incl %0" - :"+m" (v->counter)); -} - -static __inline__ void local_dec(local_t *v) -{ - __asm__ __volatile__( - "decl %0" - :"+m" (v->counter)); -} - -static __inline__ void local_add(long i, local_t *v) -{ - __asm__ __volatile__( - "addl %1,%0" - :"+m" (v->counter) - :"ir" (i)); -} - -static __inline__ void local_sub(long i, local_t *v) -{ - __asm__ __volatile__( - "subl %1,%0" - :"+m" (v->counter) - :"ir" (i)); -} - -/* On x86, these are no better than the atomic variants. */ -#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. - */ - -/* 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(v) \ - ({ local_t res__; \ - preempt_disable(); \ - res__ = (v); \ - preempt_enable(); \ - res__; }) -#define cpu_local_wrap(v) \ - ({ preempt_disable(); \ - v; \ - preempt_enable(); }) \ - -#define cpu_local_read(v) cpu_local_wrap_v(local_read(&__get_cpu_var(v))) -#define cpu_local_set(v, i) cpu_local_wrap(local_set(&__get_cpu_var(v), (i))) -#define cpu_local_inc(v) cpu_local_wrap(local_inc(&__get_cpu_var(v))) -#define cpu_local_dec(v) cpu_local_wrap(local_dec(&__get_cpu_var(v))) -#define cpu_local_add(i, v) cpu_local_wrap(local_add((i), &__get_cpu_var(v))) -#define cpu_local_sub(i, v) cpu_local_wrap(local_sub((i), &__get_cpu_var(v))) - -#define __cpu_local_inc(v) cpu_local_inc(v) -#define __cpu_local_dec(v) cpu_local_dec(v) -#define __cpu_local_add(i, v) cpu_local_add((i), (v)) -#define __cpu_local_sub(i, v) cpu_local_sub((i), (v)) - -#endif /* _ARCH_I386_LOCAL_H */ |
