blob: aedd85b0ab26703802034d0a521f781b3c715a56 [file] [log] [blame]
#ifndef SMP_SPINLOCK_H
#define SMP_SPINLOCK_H
#if CONFIG_SMP == 1
#include <arch/smp/spinlock.h>
#else /* !CONFIG_SMP */
/* Most GCC versions have a nasty bug with empty initializers */
#if (__GNUC__ > 2)
typedef struct { } spinlock_t;
#define SPIN_LOCK_UNLOCKED (spinlock_t) { }
#else
typedef struct { int gcc_is_buggy; } spinlock_t;
#define SPIN_LOCK_UNLOCKED (spinlock_t) { 0 }
#endif
#define barrier() do {} while(0)
#define spin_is_locked(lock) 0
#define spin_unlock_wait(lock) do {} while(0)
#define spin_lock(lock) do {} while(0)
#define spin_unlock(lock) do {} while(0)
#define cpu_relax() do {} while(0)
#endif
#endif /* SMP_SPINLOCK_H */