[PATCH] pi-futex: rt mutex debug

Runtime debugging functionality for rt-mutexes.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2 files changed, 15 insertions, 1 deletions

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 0ac255720f34..c41a1299b8cf 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1034,6 +1034,7 @@ static inline void
 debug_check_no_locks_freed(const void *from, unsigned long len)
 {
         mutex_debug_check_no_locks_freed(from, len);
+        rt_mutex_debug_check_no_locks_freed(from, len);
 }
 
 #ifndef CONFIG_DEBUG_PAGEALLOC
diff --git a/include/linux/rtmutex.h b/include/linux/rtmutex.h
index 12309c916c68..fa4a3b82ba70 100644
--- a/include/linux/rtmutex.h
+++ b/include/linux/rtmutex.h
@@ -41,6 +41,19 @@ struct rt_mutex_waiter;
 struct hrtimer_sleeper;
 
 #ifdef CONFIG_DEBUG_RT_MUTEXES
+ extern int rt_mutex_debug_check_no_locks_freed(const void *from,
+                                                unsigned long len);
+ extern void rt_mutex_debug_check_no_locks_held(struct task_struct *task);
+#else
+ static inline int rt_mutex_debug_check_no_locks_freed(const void *from,
+                                                       unsigned long len)
+ {
+        return 0;
+ }
+# define rt_mutex_debug_check_no_locks_held(task)       do { } while (0)
+#endif
+
+#ifdef CONFIG_DEBUG_RT_MUTEXES
 # define __DEBUG_RT_MUTEX_INITIALIZER(mutexname) \
         , .name = #mutexname, .file = __FILE__, .line = __LINE__
 # define rt_mutex_init(mutex)                   __rt_mutex_init(mutex, __FUNCTION__)
@@ -48,7 +61,7 @@ struct hrtimer_sleeper;
 #else
 # define __DEBUG_RT_MUTEX_INITIALIZER(mutexname)
 # define rt_mutex_init(mutex)                   __rt_mutex_init(mutex, NULL)
-# define rt_mutex_debug_task_free(t)            do { } while (0)
+# define rt_mutex_debug_task_free(t)                    do { } while (0)
 #endif
 
 #define __RT_MUTEX_INITIALIZER(mutexname) \