#ifndef __ASM_MCS_SPINLOCK_H
  #define __ASM_MCS_SPINLOCK_H
  
  /*
   * Architectures can define their own:
   *
   *   arch_mcs_spin_lock_contended(l)
   *   arch_mcs_spin_unlock_contended(l)
   *
   * See kernel/locking/mcs_spinlock.c.
   */
  
  #endif /* __ASM_MCS_SPINLOCK_H */