Messages in this thread | | | From | Davidlohr Bueso <> | Subject | [PATCH 0/8] locking: Various updates | Date | Sun, 28 Dec 2014 01:11:15 -0800 |
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Hello,
A little bit of everything really, with the last two patches being the most interesting ones.
Patch 1 fixes a silly typo. Patches 2-5 cleanup a bit of ww mutex code. Patch 6 isolates osq code. Patch 7 uses the brand new READ/ASSIGN_ONCE primitives. Patch 8 is a performance patch and gets rid of barrier calls when polling for the (osq) lock.
More details obviously in the individual patches. Applies on today's -tip.
Please consider for 3.20, thanks!
Davidlohr Bueso (8): Documentation/memory-barriers.txt: Fix smp typo locking/mutex: Get rid of use_ww_cxt param in common paths locking/mutex: Checking the stamp is ww only locking/mutex: Delete useless comment locking/mutex: Introduce ww_mutex_set_context_slowpath locking/mcs: Better differentiate between mcs variants locking: Use [READ,ASSIGN]_ONCE() for non-scalar types locking/osq: No need for load/acquire when acquire-polling
Documentation/memory-barriers.txt | 2 +- include/linux/osq_lock.h | 12 ++- kernel/Kconfig.locks | 4 + kernel/locking/Makefile | 3 +- kernel/locking/mcs_spinlock.c | 208 -------------------------------------- kernel/locking/mcs_spinlock.h | 22 +--- kernel/locking/mutex.c | 99 +++++++++--------- kernel/locking/osq_lock.c | 203 +++++++++++++++++++++++++++++++++++++ kernel/locking/rwsem-xadd.c | 4 +- 9 files changed, 276 insertions(+), 281 deletions(-) delete mode 100644 kernel/locking/mcs_spinlock.c create mode 100644 kernel/locking/osq_lock.c
-- 2.1.2
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