diff options
Diffstat (limited to 'ANDROID_3.4.5/include/asm-generic/local.h')
-rw-r--r-- | ANDROID_3.4.5/include/asm-generic/local.h | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/ANDROID_3.4.5/include/asm-generic/local.h b/ANDROID_3.4.5/include/asm-generic/local.h deleted file mode 100644 index 9ceb03b4..00000000 --- a/ANDROID_3.4.5/include/asm-generic/local.h +++ /dev/null @@ -1,55 +0,0 @@ -#ifndef _ASM_GENERIC_LOCAL_H -#define _ASM_GENERIC_LOCAL_H - -#include <linux/percpu.h> -#include <linux/atomic.h> -#include <asm/types.h> - -/* - * A signed long type for operations which are atomic for a single CPU. - * Usually used in combination with per-cpu variables. - * - * This is the default implementation, which uses atomic_long_t. Which is - * rather pointless. The whole point behind local_t is that some processors - * can perform atomic adds and subtracts in a manner which is atomic wrt IRQs - * running on this CPU. local_t allows exploitation of such capabilities. - */ - -/* Implement in terms of atomics. */ - -/* Don't use typedef: don't want them to be mixed with atomic_t's. */ -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)) -#define local_inc(l) atomic_long_inc(&(l)->a) -#define local_dec(l) atomic_long_dec(&(l)->a) -#define local_add(i,l) atomic_long_add((i),(&(l)->a)) -#define local_sub(i,l) atomic_long_sub((i),(&(l)->a)) - -#define local_sub_and_test(i, l) atomic_long_sub_and_test((i), (&(l)->a)) -#define local_dec_and_test(l) atomic_long_dec_and_test(&(l)->a) -#define local_inc_and_test(l) atomic_long_inc_and_test(&(l)->a) -#define local_add_negative(i, l) atomic_long_add_negative((i), (&(l)->a)) -#define local_add_return(i, l) atomic_long_add_return((i), (&(l)->a)) -#define local_sub_return(i, l) atomic_long_sub_return((i), (&(l)->a)) -#define local_inc_return(l) atomic_long_inc_return(&(l)->a) - -#define local_cmpxchg(l, o, n) atomic_long_cmpxchg((&(l)->a), (o), (n)) -#define local_xchg(l, n) atomic_long_xchg((&(l)->a), (n)) -#define local_add_unless(l, _a, u) atomic_long_add_unless((&(l)->a), (_a), (u)) -#define local_inc_not_zero(l) atomic_long_inc_not_zero(&(l)->a) - -/* Non-atomic variants, ie. preemption disabled and won't be touched - * in interrupt, etc. Some archs can optimize this case well. */ -#define __local_inc(l) local_set((l), local_read(l) + 1) -#define __local_dec(l) local_set((l), local_read(l) - 1) -#define __local_add(i,l) local_set((l), local_read(l) + (i)) -#define __local_sub(i,l) local_set((l), local_read(l) - (i)) - -#endif /* _ASM_GENERIC_LOCAL_H */ |