[PATCH v4 0/4] add mutex wait/wound/style style locks

[Maarten Lankhorst]

Version 4 already?

Small api changes since v3:
- Remove ww_mutex_unlock_single and ww_mutex_lock_single.
- Rename ww_mutex_trylock_single to ww_mutex_trylock.
- Remove separate implementations of ww_mutex_lock_slow*, normal
  functions can be used. Inline versions still exist for extra
  debugging, and to annotate.
- Cleanup unneeded memory barriers, add comment to the remaining
  smp_mb().

Thanks to Daniel Vetter, Rob Clark and Peter Zijlstra for their feedback.
---

Daniel Vetter (1):
      mutex: w/w mutex slowpath debugging

Maarten Lankhorst (3):
      arch: make __mutex_fastpath_lock_retval return whether fastpath succeeded or not.
      mutex: add support for wound/wait style locks, v5
      mutex: Add ww tests to lib/locking-selftest.c. v4


 Documentation/ww-mutex-design.txt |  344 +++++++++++++++++++++++++++++++
 arch/ia64/include/asm/mutex.h     |   10 -
 arch/powerpc/include/asm/mutex.h  |   10 -
 arch/sh/include/asm/mutex-llsc.h  |    4 
 arch/x86/include/asm/mutex_32.h   |   11 -
 arch/x86/include/asm/mutex_64.h   |   11 -
 include/asm-generic/mutex-dec.h   |   10 -
 include/asm-generic/mutex-null.h  |    2 
 include/asm-generic/mutex-xchg.h  |   10 -
 include/linux/mutex-debug.h       |    1 
 include/linux/mutex.h             |  363 +++++++++++++++++++++++++++++++++
 kernel/mutex.c                    |  384 ++++++++++++++++++++++++++++++++---
 lib/Kconfig.debug                 |   13 +
 lib/debug_locks.c                 |    2 
 lib/locking-selftest.c            |  410 +++++++++++++++++++++++++++++++++++--
 15 files changed, 1492 insertions(+), 93 deletions(-)
 create mode 100644 Documentation/ww-mutex-design.txt

-- 
~Maarten