[PATCH V3 0/5] riscv: atomic: Optimize AMO instructions usage
guoren at kernel.org
guoren at kernel.org
Wed Apr 20 07:44:12 PDT 2022
From: Guo Ren <guoren at linux.alibaba.com>
These patch series contain one cleanup and some optimizations for
atomic operations.
Changes in V3:
- Fixup usage of lr.rl & sc.aq with violation of ISA
- Add Optimize dec_if_positive functions
- Add conditional atomic operations' optimization
Changes in V2:
- Fixup LR/SC memory barrier semantic problems which pointed by
Rutland
- Combine patches into one patchset series
- Separate AMO optimization & LRSC optimization for convenience
patch review
Guo Ren (5):
riscv: atomic: Cleanup unnecessary definition
riscv: atomic: Optimize acquire and release for AMO operations
riscv: atomic: Optimize memory barrier semantics of LRSC-pairs
riscv: atomic: Optimize dec_if_positive functions
riscv: atomic: Add conditional atomic operations' optimization
arch/riscv/include/asm/atomic.h | 168 ++++++++++++++++++++++++++++---
arch/riscv/include/asm/cmpxchg.h | 30 ++----
2 files changed, 160 insertions(+), 38 deletions(-)
--
2.25.1
More information about the linux-riscv
mailing list