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authorIngo Molnar <mingo@elte.hu>2006-07-03 00:24:33 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-07-03 15:27:01 -0700
commit9a11b49a805665e13a56aa067afaf81d43ec1514 (patch)
treebf499956e3f67d1211d68ab1e2eb76645f453dfb /include/asm-generic/mutex-null.h
parentfb7e42413a098cc45b3adf858da290033af62bae (diff)
downloadlinux-linaro-stable-9a11b49a805665e13a56aa067afaf81d43ec1514.tar.gz
[PATCH] lockdep: better lock debugging
Generic lock debugging: - generalized lock debugging framework. For example, a bug in one lock subsystem turns off debugging in all lock subsystems. - got rid of the caller address passing (__IP__/__IP_DECL__/etc.) from the mutex/rtmutex debugging code: it caused way too much prototype hackery, and lockdep will give the same information anyway. - ability to do silent tests - check lock freeing in vfree too. - more finegrained debugging options, to allow distributions to turn off more expensive debugging features. There's no separate 'held mutexes' list anymore - but there's a 'held locks' stack within lockdep, which unifies deadlock detection across all lock classes. (this is independent of the lockdep validation stuff - lockdep first checks whether we are holding a lock already) Here are the current debugging options: CONFIG_DEBUG_MUTEXES=y CONFIG_DEBUG_LOCK_ALLOC=y which do: config DEBUG_MUTEXES bool "Mutex debugging, basic checks" config DEBUG_LOCK_ALLOC bool "Detect incorrect freeing of live mutexes" Signed-off-by: Ingo Molnar <mingo@elte.hu> 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>
Diffstat (limited to 'include/asm-generic/mutex-null.h')
-rw-r--r--include/asm-generic/mutex-null.h15
1 files changed, 5 insertions, 10 deletions
diff --git a/include/asm-generic/mutex-null.h b/include/asm-generic/mutex-null.h
index 5cf8b7ce0c45..254a126ede5c 100644
--- a/include/asm-generic/mutex-null.h
+++ b/include/asm-generic/mutex-null.h
@@ -10,15 +10,10 @@
#ifndef _ASM_GENERIC_MUTEX_NULL_H
#define _ASM_GENERIC_MUTEX_NULL_H
-/* extra parameter only needed for mutex debugging: */
-#ifndef __IP__
-# define __IP__
-#endif
-
-#define __mutex_fastpath_lock(count, fail_fn) fail_fn(count __RET_IP__)
-#define __mutex_fastpath_lock_retval(count, fail_fn) fail_fn(count __RET_IP__)
-#define __mutex_fastpath_unlock(count, fail_fn) fail_fn(count __RET_IP__)
-#define __mutex_fastpath_trylock(count, fail_fn) fail_fn(count)
-#define __mutex_slowpath_needs_to_unlock() 1
+#define __mutex_fastpath_lock(count, fail_fn) fail_fn(count)
+#define __mutex_fastpath_lock_retval(count, fail_fn) fail_fn(count)
+#define __mutex_fastpath_unlock(count, fail_fn) fail_fn(count)
+#define __mutex_fastpath_trylock(count, fail_fn) fail_fn(count)
+#define __mutex_slowpath_needs_to_unlock() 1
#endif