2c018fba95
- SMP cleanups (remove SMP only use CONFIG_SMP) - Minor tweaks to romcc to keep it from taking forever compiling - failover fixes - Get a good implementation of k8_cpufixup and sizeram for the opteron git-svn-id: svn://svn.coreboot.org/coreboot/trunk@998 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
#ifndef SMP_ATOMIC_H
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#define SMP_ATOMIC_H
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#ifdef CONFIG_SMP
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#include <arch/smp/atomic.h>
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#else
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typedef struct { int counter; } atomic_t;
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#define ATOMIC_INIT(i) { (i) }
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/**
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* atomic_read - read atomic variable
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* @v: pointer of type atomic_t
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*
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* Atomically reads the value of @v. Note that the guaranteed
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* useful range of an atomic_t is only 24 bits.
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*/
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#define atomic_read(v) ((v)->counter)
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/**
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* atomic_set - set atomic variable
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* @v: pointer of type atomic_t
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* @i: required value
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*
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* Atomically sets the value of @v to @i. Note that the guaranteed
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* useful range of an atomic_t is only 24 bits.
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*/
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#define atomic_set(v,i) (((v)->counter) = (i))
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/**
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* atomic_inc - increment atomic variable
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* @v: pointer of type atomic_t
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*
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* Atomically increments @v by 1. Note that the guaranteed
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* useful range of an atomic_t is only 24 bits.
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*/
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#define atomic_inc(v) (((v)->counter)++)
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/**
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* atomic_dec - decrement atomic variable
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* @v: pointer of type atomic_t
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*
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* Atomically decrements @v by 1. Note that the guaranteed
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* useful range of an atomic_t is only 24 bits.
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*/
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#define atomic_dec(v) (((v)->counter)--)
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#endif /* CONFIG_SMP */
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#endif /* SMP_ATOMIC_H */
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