52 lines
2.5 KiB
C
52 lines
2.5 KiB
C
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/****************************************************************************
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****************************************************************************
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***
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*** This header was automatically generated from a Linux kernel header
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*** of the same name, to make information necessary for userspace to
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*** call into the kernel available to libc. It contains only constants,
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*** structures, and macros generated from the original header, and thus,
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*** contains no copyrightable information.
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***
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****************************************************************************
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****************************************************************************/
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#ifndef _ARCH_I386_LOCAL_H
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#define _ARCH_I386_LOCAL_H
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#include <linux/percpu.h>
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#include <asm/system.h>
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#include <asm/atomic.h>
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typedef struct
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{
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atomic_long_t a;
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} local_t;
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#define LOCAL_INIT(i) { ATOMIC_LONG_INIT(i) }
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#define local_read(l) atomic_long_read(&(l)->a)
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#define local_set(l,i) atomic_long_set(&(l)->a, (i))
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#define local_inc_return(l) (local_add_return(1,l))
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#define local_dec_return(l) (local_sub_return(1,l))
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#define local_cmpxchg(l, o, n) (cmpxchg_local(&((l)->a.counter), (o), (n)))
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#define local_xchg(l, n) (xchg(&((l)->a.counter), (n)))
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#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); })
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#define local_inc_not_zero(l) local_add_unless((l), 1, 0)
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#define __local_inc(l) local_inc(l)
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#define __local_dec(l) local_dec(l)
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#define __local_add(i,l) local_add((i),(l))
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#define __local_sub(i,l) local_sub((i),(l))
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#define cpu_local_wrap_v(l) ({ local_t res__; preempt_disable(); res__ = (l); preempt_enable(); res__; })
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#define cpu_local_wrap(l) ({ preempt_disable(); l; preempt_enable(); })
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#define cpu_local_read(l) cpu_local_wrap_v(local_read(&__get_cpu_var(l)))
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#define cpu_local_set(l, i) cpu_local_wrap(local_set(&__get_cpu_var(l), (i)))
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#define cpu_local_inc(l) cpu_local_wrap(local_inc(&__get_cpu_var(l)))
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#define cpu_local_dec(l) cpu_local_wrap(local_dec(&__get_cpu_var(l)))
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#define cpu_local_add(i, l) cpu_local_wrap(local_add((i), &__get_cpu_var(l)))
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#define cpu_local_sub(i, l) cpu_local_wrap(local_sub((i), &__get_cpu_var(l)))
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#define __cpu_local_inc(l) cpu_local_inc(l)
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#define __cpu_local_dec(l) cpu_local_dec(l)
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#define __cpu_local_add(i, l) cpu_local_add((i), (l))
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#define __cpu_local_sub(i, l) cpu_local_sub((i), (l))
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#endif
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