Messages in this thread | | | From | Davidlohr Bueso <> | Subject | [PATCH 0/5] locking: Use acquire/release semantics | Date | Mon, 21 Sep 2015 13:17:51 -0700 |
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Changes from v2: o Rename patch titles (per Linus), slight changelog rephrasing.
Hi,
This series continues porting users to Will's new _{acquire|release|relaxed} optimizations for weakly ordered archs -- and in practice, arm64 being the only actual user we have, thus could use a _lot_ more testing. While we have osq in -tip recently, along with Waiman's one for native qspinlock, the following patches pretty much complete the move over for all things kernel/locking/*. Of course, particular primitives can be found in the obvious patch titles. Note that patch 1 adds the necessary machinery to fully support some locks, such as rwsems.
Compiles on x86 and x86-64.
Thanks!
Davidlohr Bueso (5): asm-generic: Add _{relaxed|acquire|release}() variants for inc/dec atomics locking/mutex: Use acquire/release semantics locking/rtmutex: Use acquire/release semantics locking/rwsem: Use acquire/release semantics locking/mcs: Use acquire/release semantics
include/asm-generic/atomic-long.h | 29 +++++++----- include/asm-generic/mutex-dec.h | 8 ++-- include/asm-generic/mutex-xchg.h | 10 ++-- include/asm-generic/rwsem.h | 14 +++--- include/linux/atomic.h | 97 +++++++++++++++++++++++++++++++++++++++ kernel/locking/mcs_spinlock.h | 4 +- kernel/locking/mutex.c | 9 ++-- kernel/locking/rtmutex.c | 30 ++++++++---- kernel/locking/rwsem-xadd.c | 5 +- 9 files changed, 161 insertions(+), 45 deletions(-)
-- 2.1.4
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