src/include/smp/spinlock.h

   1 #ifndef SMP_SPINLOCK_H
   2 #define SMP_SPINLOCK_H
   3
   4 #if CONFIG_SMP == 1
   5 #include <arch/smp/spinlock.h>
   6 #else /* !CONFIG_SMP */
   7
   8 #define DECLARE_SPIN_LOCK(x)
   9 #define barrier()               do {} while(0)
  10 #define spin_is_locked(lock)    0
  11 #define spin_unlock_wait(lock)  do {} while(0)
  12 #define spin_lock(lock)         do {} while(0)
  13 #define spin_unlock(lock)       do {} while(0)
  14 #define cpu_relax()             do {} while(0)
  15 #endif
  16
  17 #endif /* SMP_SPINLOCK_H */