[GIT PULL] locking changes for v6.3

From: Ingo Molnar
Date: Mon Feb 20 2023 - 07:26:49 EST



Linus,

Please pull the latest locking tree from:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking-core-2023-02-20

# HEAD: 3b4863fa5b7dd50dab1b10abbed938efd203752f vduse: Remove include of rwlock.h

Updates for this cycle were:

- rwsem micro-optimizations
- spinlock micro-optimizations
- cleanups, simplifications

Thanks,

Ingo

------------------>
Guo Ren (1):
locking/qspinlock: Micro-optimize pending state waiting for unlock

Sebastian Andrzej Siewior (2):
locking/lockdep: Remove lockdep_init_map_crosslock.
vduse: Remove include of rwlock.h

Uros Bizjak (2):
x86/PAT: Use try_cmpxchg() in set_page_memtype()
x86/ACPI/boot: Use try_cmpxchg() in __acpi_{acquire,release}_global_lock()

Waiman Long (3):
locking/rwsem: Prevent non-first waiter from spinning in down_write() slowpath
locking/rwsem: Disable preemption in all down_read*() and up_read() code paths
locking/rwsem: Disable preemption in all down_write*() and up_write() code paths


arch/x86/kernel/acpi/boot.c | 16 +++----
arch/x86/mm/pat/memtype.c | 4 +-
drivers/vdpa/vdpa_user/iova_domain.h | 1 -
include/linux/lockdep.h | 1 -
kernel/locking/qspinlock.c | 4 +-
kernel/locking/rwsem.c | 87 +++++++++++++++++++++---------------
6 files changed, 64 insertions(+), 49 deletions(-)