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#ifdef CONFIG_X86_32
# include "mutex_32.h"
#else
# include "mutex_64.h"
#endif
#ifndef __ASM_MUTEX_H
#define __ASM_MUTEX_H
#ifdef MUTEX_SHOULD_XCHG_COUNT
#undef MUTEX_SHOULD_XCHG_COUNT
#endif
/*
* For the x86 architecture, it allows any negative number (besides -1) in
* the mutex counter to indicate that some other threads are waiting on the
* mutex. So the atomic_xchg() function should not be called in
* __mutex_lock_common() if the value of the counter has already been set
* to a negative number.
*/
#define MUTEX_SHOULD_XCHG_COUNT(mutex) (atomic_read(&(mutex)->count) >= 0)
#endif
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