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Rev 2131 Rev 2307
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    atomic_set(&sl->val, 0);
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    atomic_set(&sl->val, 0);
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    preemption_enable();
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    preemption_enable();
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}
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}
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#ifdef CONFIG_DEBUG_SPINLOCK
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extern int printf(const char *, ...);
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#define DEADLOCK_THRESHOLD      100000000
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#define DEADLOCK_PROBE_INIT(pname)  count_t pname = 0
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#define DEADLOCK_PROBE(pname, value)                    \
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    if ((pname)++ > (value)) {                  \
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        (pname) = 0;                        \
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        printf("Deadlock probe %s: exceeded threshold %d\n",    \
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            "cpu%d: function=%s, line=%d\n",            \
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            #pname, (value), CPU->id, __FUNCTION__, __LINE__);  \
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    }
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#else
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#define DEADLOCK_PROBE_INIT(pname)
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#define DEADLOCK_PROBE(pname, value)
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#endif
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#else
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#else
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/* On UP systems, spinlocks are effectively left out. */
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/* On UP systems, spinlocks are effectively left out. */
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#define SPINLOCK_DECLARE(name)
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#define SPINLOCK_DECLARE(name)
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#define SPINLOCK_EXTERN(name)
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#define SPINLOCK_EXTERN(name)
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#define spinlock_initialize(x, name)
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#define spinlock_initialize(x, name)
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#define spinlock_lock(x)        preemption_disable()
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#define spinlock_lock(x)        preemption_disable()
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#define spinlock_trylock(x)         (preemption_disable(), 1)
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#define spinlock_trylock(x)         (preemption_disable(), 1)
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#define spinlock_unlock(x)      preemption_enable()
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#define spinlock_unlock(x)      preemption_enable()
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#define DEADLOCK_PROBE_INIT(pname)
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#define DEADLOCK_PROBE(pname, value)
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#endif
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#endif
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#endif
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#endif
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/** @}
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/** @}