[PATCH-tip v2 0/3] locking/rwsem: Miscellaneous rwsem enhancements

Waiman Long
2023-02-16T21:10:42Z

v2:
- Break out some code refactoring into a separate patch.
- Move the early handoff code from rwsem_wake() to rwsem_mark_wake() to
cover all wakeup conditions as suggested by PeterZ.
- Simplify the all reader wake up patch.

The second patch in this series is similar to patch 4 of the v7 patch
series [1]. So it should provide similar performance benefit. Patch 3
is another minor enhancement about reader wakeup for some specific
use cases.

[1] https://lore.kernel.org/lkml/20230126003628.365092-1-longman@redhat.com/

Waiman Long (3):
locking/rwsem: Minor code refactoring in rwsem_mark_wake()
locking/rwsem: Enable early rwsem writer lock handoff
locking/rwsem: Wake up all readers for wait queue waker

kernel/locking/lock_events_list.h | 1 +
kernel/locking/rwsem.c | 133 ++++++++++++++++++++++--------
2 files changed, 99 insertions(+), 35 deletions(-)

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2.31.1