[PATCH v5 0/3] locking/qrwlock: More optimizations in qrwlock

Waiman Long
2015-06-19T15:51:16Z

v4->v5:
- Add a new patch to rename function names to sync up to qspinlock
naming convention.
- Move the extended qrwlock structure to the header file as requested
by Will Deacon so that it can also be used in the ARM's architecture
specific code.

v3->v4:
- Remove the unnecessary _QW_WMASK check in
queue_read_lock_slowpath().

v2->v3:
- Fix incorrect commit log message in patch 1.

v1->v2:
- Add microbenchmark data for the second patch

This patch set contains 2 patches on qrwlock. The first one is to
optimize the interrupt context reader slowpath. The second one is
to optimize the writer slowpath.

*** BLURB HERE ***

Waiman Long (3):
locking/qrwlock: Rename functions to queued_*()
locking/qrwlock: Better optimization for interrupt context readers
locking/qrwlock: Don't contend with readers when setting _QW_WAITING

arch/x86/include/asm/qrwlock.h | 7 ++--
include/asm-generic/qrwlock.h | 58 +++++++++++++++++-----------------
include/asm-generic/qrwlock_types.h | 18 ++++++++++-
kernel/locking/qrwlock.c | 29 ++++++++---------
4 files changed, 63 insertions(+), 49 deletions(-)