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
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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(-)
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1.8.3.1
