linux-toradex.git/include/linux/lockdep.h, branch v2.6.22.7

[PATCH] lockdep: lockdep_depth vs. debug_locks

2007-03-23T02:39:06+00:00

lockdep found a bug during a run of workqueue function - this could be also
caused by a bug from other code running simultaneously.

lockdep really shouldn't be used when debug_locks == 0!

Reported-by: Folkert van Heusden 
Inspired-by: Oleg Nesterov 
Signed-off-by: Jarek Poplawski 
Cc: Ingo Molnar 
Acked-by: Peter Zijlstra 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] lockdep: forward declare struct task_struct

2007-02-12T17:48:29+00:00

3117df0453828bd045c16244e6f50e5714667a8a causes this:

In file included from arch/s390/kernel/early.c:13:
include/linux/lockdep.h:300: warning:
		"struct task_struct" declared inside parameter list
include/linux/lockdep.h:300:
		warning: its scope is only this definition or
		declaration, which is probably not what you want

Acked-by: Ingo Molnar 
Cc: Martin Schwidefsky 
Signed-off-by: Heiko Carstens 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] lockdep: add graph depth information to /proc/lockdep

2007-02-11T18:51:26+00:00

Generate locking graph information into /proc/lockdep, for lock hierarchy
documentation and visualization purposes.

sample output:

 c089fd5c OPS:     138 FD:   14 BD:    1 --..: &tty->termios_mutex
  -> [c07a3430] tty_ldisc_lock
  -> [c07a37f0] &port_lock_key
  -> [c07afdc0] &rq->rq_lock_key#2

The lock classes listed are all the first-hop lock dependencies that
lockdep has seen so far.

Signed-off-by: Ingo Molnar 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] lockdep: print irq-trace info on asserts

2006-12-13T17:05:50+00:00

When we print an assert due to scheduling-in-atomic bugs, and if lockdep
is enabled, then the IRQ tracing information of lockdep can be printed
to pinpoint the code location that disabled interrupts. This saved me
quite a bit of debugging time in cases where the backtrace did not
identify the irq-disabling site well enough.

Signed-off-by: Ingo Molnar 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] remove kernel/lockdep.c:lockdep_internal

2006-12-07T16:39:39+00:00

Remove the no longer used lockdep_internal().

Signed-off-by: Adrian Bunk 
Acked-by: Ingo Molnar 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] debug: workqueue locking sanity

2006-12-07T16:39:36+00:00

Workqueue functions should not leak locks, assert so, printing the
last function ran.

Use macros in lockdep.h to avoid include dependency pains.

[akpm@osdl.org: build fix]
Signed-off-by: Peter Zijlstra 
Acked-by: Ingo Molnar 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Lockdep: fix compile error in drivers/input/serio/serio.c

2006-10-12T03:45:23+00:00

lockdep_set_subclass() was missing in !LOCKDEP case

Signed-off-by: Andrew Morton 
Signed-off-by: Dmitry Torokhov

Lockdep: add lockdep_set_class_and_subclass() and lockdep_set_subclass()

2006-10-11T05:45:14+00:00

This annotation makes it possible to assign a subclass on lock init. This
annotation is meant to reduce the _nested() annotations by assigning a
default subclass.

One could do without this annotation and rely on lockdep_set_class()
exclusively, but that would require a manual stack of struct lock_class_key
objects.

Signed-off-by: Peter Zijlstra 
Signed-off-by: Dmitry Torokhov

[PATCH] lockdep: don't pull in includes when lockdep disabled

2006-09-29T16:18:08+00:00

Do not pull in various includes through lockdep.h if lockdep is disabled.

Signed-off-by: Michael S. Tsirkin 
Cc: Ingo Molnar 
Cc: Arjan van de Ven 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] lockdep: core, reduce per-lock class-cache size

2006-07-10T20:24:14+00:00

lockdep_map is embedded into every lock, which blows up data structure
sizes all around the kernel.  Reduce the class-cache to be for the default
class only - that is used in 99.9% of the cases and even if we dont have a
class cached, the lookup in the class-hash is lockless.

This change reduces the per-lock dep_map overhead by 56 bytes on 64-bit
platforms and by 28 bytes on 32-bit platforms.

Signed-off-by: Ingo Molnar 
Cc: Arjan van de Ven 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds