Module Name: src
Committed By: martin
Date: Fri Apr 30 13:54:00 UTC 2021
Modified Files:
src/common/lib/libc/arch/arm/atomic [netbsd-9]: atomic_swap.S
atomic_swap_16.S atomic_swap_64.S membar_ops.S
src/sys/arch/arm/include [netbsd-9]: lock.h
Log Message:
Pull up following revision(s) (requested by skrll in ticket #1261):
sys/arch/arm/include/lock.h: revision 1.38
common/lib/libc/arch/arm/atomic/membar_ops.S: revision 1.7
common/lib/libc/arch/arm/atomic/atomic_swap_16.S: revision 1.5
common/lib/libc/arch/arm/atomic/atomic_swap_64.S: revision 1.12
common/lib/libc/arch/arm/atomic/atomic_swap.S: revision 1.17
Add the appropriate memory barrier before the lock is cleared in
__sync_lock_release_{1,2,4,8}. That is, all reads and write for the
inner shareability domain before the lock clear store.
Improve the membar_ops barriers - no need to use dsb and wait for
completion. Also, we only to act on the inner shareability domain.
Fix the barrier confusion. From Riastradh - thanks!.
To generate a diff of this commit:
cvs rdiff -u -r1.14.18.1 -r1.14.18.2 \
src/common/lib/libc/arch/arm/atomic/atomic_swap.S
cvs rdiff -u -r1.4 -r1.4.18.1 \
src/common/lib/libc/arch/arm/atomic/atomic_swap_16.S
cvs rdiff -u -r1.10.18.1 -r1.10.18.2 \
src/common/lib/libc/arch/arm/atomic/atomic_swap_64.S
cvs rdiff -u -r1.6 -r1.6.28.1 \
src/common/lib/libc/arch/arm/atomic/membar_ops.S
cvs rdiff -u -r1.33.8.1 -r1.33.8.2 src/sys/arch/arm/include/lock.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
