1#ifndef __LINUX_SMPLOCK_H 2#define __LINUX_SMPLOCK_H 3 4#include <linux/config.h> 5 6#if !defined(CONFIG_SMP) && !defined(CONFIG_PREEMPT) 7 8#define lock_kernel() do { } while(0) 9#define unlock_kernel() do { } while(0) 10#define release_kernel_lock(task) do { } while(0) 11#define reacquire_kernel_lock(task) do { } while(0) 12#define kernel_locked() 1 13 14#else 15 16#include <asm/smplock.h> 17 18#endif /* CONFIG_SMP */ 19 20#endif 21