text: #ifndef _ASM_X86_RCU_H
  #define _ASM_X86_RCU_H
  
  #ifndef __ASSEMBLY__
  
  #include <linux/rcupdate.h>
  #include <asm/ptrace.h>
  
  static inline void exception_enter(struct pt_regs *regs)
  {
  	rcu_user_exit();
  }
  
  static inline void exception_exit(struct pt_regs *regs)
  {
  #ifdef CONFIG_RCU_USER_QS
  	if (user_mode(regs))
  		rcu_user_enter();
  #endif
  }
  
  #else /* __ASSEMBLY__ */
  
  #ifdef CONFIG_RCU_USER_QS
  # define SCHEDULE_USER call schedule_user
  #else
  # define SCHEDULE_USER call schedule
  #endif
  
  #endif /* !__ASSEMBLY__ */
  
  #endif
  