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Diffstat (limited to 'include/linux/smp_lock.h')
-rw-r--r--include/linux/smp_lock.h19
1 files changed, 15 insertions, 4 deletions
diff --git a/include/linux/smp_lock.h b/include/linux/smp_lock.h
index 813be59bf345..d48cc77ba70d 100644
--- a/include/linux/smp_lock.h
+++ b/include/linux/smp_lock.h
@@ -3,6 +3,7 @@
#ifdef CONFIG_LOCK_KERNEL
#include <linux/sched.h>
+#include <trace/events/bkl.h>
#define kernel_locked() (current->lock_depth >= 0)
@@ -24,8 +25,18 @@ static inline int reacquire_kernel_lock(struct task_struct *task)
return 0;
}
-extern void __lockfunc lock_kernel(void) __acquires(kernel_lock);
-extern void __lockfunc unlock_kernel(void) __releases(kernel_lock);
+extern void __lockfunc _lock_kernel(void) __acquires(kernel_lock);
+extern void __lockfunc _unlock_kernel(void) __releases(kernel_lock);
+
+#define lock_kernel() { \
+ trace_lock_kernel(__func__, __FILE__, __LINE__); \
+ _lock_kernel(); \
+}
+
+#define unlock_kernel() { \
+ trace_unlock_kernel(__func__, __FILE__, __LINE__); \
+ _unlock_kernel(); \
+}
/*
* Various legacy drivers don't really need the BKL in a specific
@@ -41,8 +52,8 @@ static inline void cycle_kernel_lock(void)
#else
-#define lock_kernel() do { } while(0)
-#define unlock_kernel() do { } while(0)
+#define lock_kernel() trace_lock_kernel(__func__, __FILE__, __LINE__);
+#define unlock_kernel() trace_unlock_kernel(__func__, __FILE__, __LINE__);
#define release_kernel_lock(task) do { } while(0)
#define cycle_kernel_lock() do { } while(0)
#define reacquire_kernel_lock(task) 0