[PATCH v3 0/3] Wait/wound mutex implementation, v3

[Maarten Lankhorst]

The following series implements the updated api for wait/wound mutex locks.
The documentation and api should be complete, the implementation may not be
final. There is no support for -rt yet, and TASK_DEADLOCK handling is missing
too. However I believe that this is an implementation detail, and that the
interface for users of the api will not behave differently.

ww_acquire_ctx has been added, and a whole lot of api abuses are now correctly
detected because of the extra state carried in ww_acquire_ctx if debugging is
enabled.

---

Maarten Lankhorst (3):
      arch: make __mutex_fastpath_lock_retval return whether fastpath succeeded or not.
      mutex: add support for wound/wait style locks, v3
      mutex: Add ww tests to lib/locking-selftest.c. v3


 Documentation/ww-mutex-design.txt |  322 +++++++++++++++++++++++++
 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             |  257 ++++++++++++++++++++
 kernel/mutex.c                    |  473 ++++++++++++++++++++++++++++++++++---
 lib/debug_locks.c                 |    2 
 lib/locking-selftest.c            |  439 +++++++++++++++++++++++++++++++++-
 14 files changed, 1469 insertions(+), 93 deletions(-)
 create mode 100644 Documentation/ww-mutex-design.txt

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