1b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare/**************************************************************************** 2b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare **************************************************************************** 3b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare *** 4b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare *** This header was automatically generated from a Linux kernel header 5b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare *** of the same name, to make information necessary for userspace to 6b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare *** call into the kernel available to libc. It contains only constants, 7b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare *** structures, and macros generated from the original header, and thus, 8b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare *** contains no copyrightable information. 9b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare *** 10b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare **************************************************************************** 11b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare ****************************************************************************/ 12b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#ifndef _ARCH_I386_LOCAL_H 13b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#define _ARCH_I386_LOCAL_H 14b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare 15b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#include <linux/percpu.h> 16b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#include <asm/system.h> 17b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#include <asm/atomic.h> 18b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare 19b17fe090db1a34bac2c56bef93925fc893300e70Bruce Bearetypedef struct 20b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare{ 21b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare atomic_long_t a; 22b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare} local_t; 23b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare 24b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#define LOCAL_INIT(i) { ATOMIC_LONG_INIT(i) } 25b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare 26b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#define local_read(l) atomic_long_read(&(l)->a) 27b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#define local_set(l,i) atomic_long_set(&(l)->a, (i)) 28b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare 29b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#define local_inc_return(l) (local_add_return(1,l)) 30b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#define local_dec_return(l) (local_sub_return(1,l)) 31b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#define local_cmpxchg(l, o, n) (cmpxchg_local(&((l)->a.counter), (o), (n))) 32b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#define local_xchg(l, n) (xchg(&((l)->a.counter), (n))) 33b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#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); }) 34b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#define local_inc_not_zero(l) local_add_unless((l), 1, 0) 35b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#define __local_inc(l) local_inc(l) 36b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#define __local_dec(l) local_dec(l) 37b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#define __local_add(i,l) local_add((i),(l)) 38b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#define __local_sub(i,l) local_sub((i),(l)) 39b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#define cpu_local_wrap_v(l) ({ local_t res__; preempt_disable(); res__ = (l); preempt_enable(); res__; }) 40b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#define cpu_local_wrap(l) ({ preempt_disable(); l; preempt_enable(); }) 41b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#define cpu_local_read(l) cpu_local_wrap_v(local_read(&__get_cpu_var(l))) 42b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#define cpu_local_set(l, i) cpu_local_wrap(local_set(&__get_cpu_var(l), (i))) 43b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#define cpu_local_inc(l) cpu_local_wrap(local_inc(&__get_cpu_var(l))) 44b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#define cpu_local_dec(l) cpu_local_wrap(local_dec(&__get_cpu_var(l))) 45b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#define cpu_local_add(i, l) cpu_local_wrap(local_add((i), &__get_cpu_var(l))) 46b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#define cpu_local_sub(i, l) cpu_local_wrap(local_sub((i), &__get_cpu_var(l))) 47b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#define __cpu_local_inc(l) cpu_local_inc(l) 48b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#define __cpu_local_dec(l) cpu_local_dec(l) 49b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#define __cpu_local_add(i, l) cpu_local_add((i), (l)) 50b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#define __cpu_local_sub(i, l) cpu_local_sub((i), (l)) 51b17fe090db1a34bac2c56bef93925fc893300e70Bruce Beare#endif 52