forked from luck/tmp_suning_uos_patched
9a11b49a80
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>
18 lines
327 B
C
18 lines
327 B
C
#ifndef __LINUX_MUTEX_DEBUG_H
|
|
#define __LINUX_MUTEX_DEBUG_H
|
|
|
|
#include <linux/linkage.h>
|
|
|
|
/*
|
|
* Mutexes - debugging helpers:
|
|
*/
|
|
|
|
#define __DEBUG_MUTEX_INITIALIZER(lockname) \
|
|
, .magic = &lockname
|
|
|
|
#define mutex_init(sem) __mutex_init(sem, __FILE__":"#sem)
|
|
|
|
extern void FASTCALL(mutex_destroy(struct mutex *lock));
|
|
|
|
#endif
|