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
--
Signature
_______________________________________________
dri-devel mailing list
dri-devel@xxxxxxxxxxxxxxxxxxxxx
http://lists.freedesktop.org/mailman/listinfo/dri-devel
