| #ifndef __LINUX_SMPLOCK_H |
| #define __LINUX_SMPLOCK_H |
| #ifdef CONFIG_LOCK_KERNEL |
| #define kernel_locked() (current->lock_depth >= 0) |
| extern int __lockfunc __reacquire_kernel_lock(void); |
| extern void __lockfunc __release_kernel_lock(void); |
| * Release/re-acquire global kernel lock for the scheduler |
| #define release_kernel_lock(tsk) do { \ |
| if (unlikely((tsk)->lock_depth >= 0)) \ |
| __release_kernel_lock(); \ |
| static inline int reacquire_kernel_lock(struct task_struct *task) |
| if (unlikely(task->lock_depth >= 0)) |
| return __reacquire_kernel_lock(); |
| extern void __lockfunc lock_kernel(void) __acquires(kernel_lock); |
| extern void __lockfunc unlock_kernel(void) __releases(kernel_lock); |
| #define lock_kernel() do { } while(0) |
| #define unlock_kernel() do { } while(0) |
| #define release_kernel_lock(task) do { } while(0) |
| #define reacquire_kernel_lock(task) 0 |
| #define kernel_locked() 1 |
| #endif /* CONFIG_LOCK_KERNEL */ |
| #endif /* __LINUX_SMPLOCK_H */ |