[PATCH v2 00/19] locking/lockdep: Add comments and make some code

[Yuyang Du <duyuyang@gmail.com>]

Hi Peter,

I recently looked at some system hang issues. While at it, I tried to use
and understand lockdep. These patches are made as a result. I believe they
should have helped me, so hopefully they do for others as well.

Change from v1:
- Rebased the patch series.
- Added more no-functional-change patches.
- Removed zapped locks in lock chains printing patch, which was a band-aid.
  The real problem was recently fixed by Bart.

Thanks,
Yuyang

--

Yuyang Du (19):
  locking/lockdep: Change all print_*() return type to void
  locking/lockdep: Add description and explanation in lockdep design doc
  locking/lockdep: Adjust lock usage bit character checks
  locking/lockdep: Remove useless conditional macro
  locking/lockdep: Adjust indents for function definitions
  locking/lockdep: Print the right depth for chain key colission
  locking/lockdep: Update obsolete struct field description
  locking/lockdep: Use lockdep_init_task for task initiation
    consistently
  locking/lockdep: Define INITIAL_CHAIN_KEY for chain keys to start with
  locking/lockdep: Change the range of class_idx in held_lock struct
  locking/lockdep: Remove unused argument in validate_chain()
  locking/lockdep: Update comment
  locking/lockdep: Remove unnecessary function pointer argument
  locking/lockdep: Change type of the element field in circular_queue
  locking/lockdep: Remove __cq_empty()
  locking/lockdep: Use function pointer to avoid constant checks
  locking/lockdep: Combine check_noncircular and check_redundant
  locking/lockdep: Update comments on dependency search
  locking/lockdep: Change if to else-if when checking bfs errors

 Documentation/locking/lockdep-design.txt |  89 +++--
 include/linux/lockdep.h                  |  26 +-
 init/init_task.c                         |   2 +
 kernel/fork.c                            |   3 -
 kernel/locking/lockdep.c                 | 573 +++++++++++++++++--------------
 kernel/locking/lockdep_internals.h       |   1 +
 6 files changed, 391 insertions(+), 303 deletions(-)

-- 
1.8.3.1