linux-toradex.git/include/linux/debug_locks.h, branch v2.6.23-rc5 Linux kernel for Apalis and Colibri modules [PATCH] lock debugging: fix DEBUG_LOCKS_WARN_ON() & debug_locks_silent 2006-12-22T16:55:48+00:00 Ingo Molnar mingo@elte.hu 2006-12-22T09:08:52+00:00 9127d4b1d9b2e8fba8e7fbc7f88ea93e5eb01396 Matthew Wilcox noticed that the debug_locks_silent use should be inverted in DEBUG_LOCKS_WARN_ON(). This bug was causing spurious stacktraces and incorrect failures in the locking self-test on the parisc kernel. Bug-found-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 
Matthew Wilcox noticed that the debug_locks_silent use should be inverted
in DEBUG_LOCKS_WARN_ON().  This bug was causing spurious stacktraces and
incorrect failures in the locking self-test on the parisc kernel.

Bug-found-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
[PATCH] lockdep: show more details about self-test failures 2006-12-07T16:39:43+00:00 Ingo Molnar mingo@elte.hu 2006-12-07T04:39:32+00:00 2ee91f197c0bc654b24eed5831fd12aa0d566a7d Make the locking self-test failures (of 'FAILURE' type) easier to debug by printing more information. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 
Make the locking self-test failures (of 'FAILURE' type) easier to debug by
printing more information.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
[PATCH] Need forward decl of task_struct in linux/debug_locks.h 2006-10-04T12:45:23+00:00 Kyle McMartin kyle@parisc-linux.org 2006-08-14T01:09:31+00:00 f86e45131f9d41b1617fbaac7aa1ef23e8d0ab48 Signed-off-by: Kyle McMartin <kyle@parisc-linux.org> 
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
[PATCH] debug_locks.h: add "struct task_struct;" 2006-08-06T15:57:47+00:00 Alexey Dobriyan adobriyan@gmail.com 2006-08-05T19:14:27+00:00 9b7f750d446a717d4c8346fbb165b62661019b92 Removes many, many "declared inside parameter list" warnings on parisc. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org> 
Removes many, many "declared inside parameter list" warnings on parisc.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
[PATCH] lockdep: better lock debugging 2006-07-03T22:27:01+00:00 Ingo Molnar mingo@elte.hu 2006-07-03T07:24:33+00:00 9a11b49a805665e13a56aa067afaf81d43ec1514 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> 
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>