diff options
Diffstat (limited to 'include/linux/smp_lock.h')
-rw-r--r-- | include/linux/smp_lock.h | 65 |
1 files changed, 0 insertions, 65 deletions
diff --git a/include/linux/smp_lock.h b/include/linux/smp_lock.h deleted file mode 100644 index 3a1988202731..000000000000 --- a/include/linux/smp_lock.h +++ /dev/null | |||
@@ -1,65 +0,0 @@ | |||
1 | #ifndef __LINUX_SMPLOCK_H | ||
2 | #define __LINUX_SMPLOCK_H | ||
3 | |||
4 | #ifdef CONFIG_LOCK_KERNEL | ||
5 | #include <linux/sched.h> | ||
6 | |||
7 | extern int __lockfunc __reacquire_kernel_lock(void); | ||
8 | extern void __lockfunc __release_kernel_lock(void); | ||
9 | |||
10 | /* | ||
11 | * Release/re-acquire global kernel lock for the scheduler | ||
12 | */ | ||
13 | #define release_kernel_lock(tsk) do { \ | ||
14 | if (unlikely((tsk)->lock_depth >= 0)) \ | ||
15 | __release_kernel_lock(); \ | ||
16 | } while (0) | ||
17 | |||
18 | static inline int reacquire_kernel_lock(struct task_struct *task) | ||
19 | { | ||
20 | if (unlikely(task->lock_depth >= 0)) | ||
21 | return __reacquire_kernel_lock(); | ||
22 | return 0; | ||
23 | } | ||
24 | |||
25 | extern void __lockfunc | ||
26 | _lock_kernel(const char *func, const char *file, int line) | ||
27 | __acquires(kernel_lock); | ||
28 | |||
29 | extern void __lockfunc | ||
30 | _unlock_kernel(const char *func, const char *file, int line) | ||
31 | __releases(kernel_lock); | ||
32 | |||
33 | #define lock_kernel() do { \ | ||
34 | _lock_kernel(__func__, __FILE__, __LINE__); \ | ||
35 | } while (0) | ||
36 | |||
37 | #define unlock_kernel() do { \ | ||
38 | _unlock_kernel(__func__, __FILE__, __LINE__); \ | ||
39 | } while (0) | ||
40 | |||
41 | /* | ||
42 | * Various legacy drivers don't really need the BKL in a specific | ||
43 | * function, but they *do* need to know that the BKL became available. | ||
44 | * This function just avoids wrapping a bunch of lock/unlock pairs | ||
45 | * around code which doesn't really need it. | ||
46 | */ | ||
47 | static inline void cycle_kernel_lock(void) | ||
48 | { | ||
49 | lock_kernel(); | ||
50 | unlock_kernel(); | ||
51 | } | ||
52 | |||
53 | #else | ||
54 | |||
55 | #ifdef CONFIG_BKL /* provoke build bug if not set */ | ||
56 | #define lock_kernel() | ||
57 | #define unlock_kernel() | ||
58 | #define cycle_kernel_lock() do { } while(0) | ||
59 | #endif /* CONFIG_BKL */ | ||
60 | |||
61 | #define release_kernel_lock(task) do { } while(0) | ||
62 | #define reacquire_kernel_lock(task) 0 | ||
63 | |||
64 | #endif /* CONFIG_LOCK_KERNEL */ | ||
65 | #endif /* __LINUX_SMPLOCK_H */ | ||