Messages in this thread | | | From | Leonardo Bras <> | Subject | [RFC PATCH 0/6] Deduplicating RISCV cmpxchg.h macros | Date | Sat, 18 Mar 2023 05:00:54 -0300 |
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While studying riscv's cmpxchg.h file, I got really interested in understanding how RISCV asm implemented the different versions of {cmp,}xchg.
When I understood the pattern, it made sense for me to remove the duplications and create macros to make it easier to understand what exactly changes between the versions: Instruction sufixes & barriers.
I split those changes in 3 levels for each cmpxchg and xchg, resulting a total of 6 patches. I did this so it becomes easier to review and remove the last levels if desired, but I have no issue squashing them if it's better.
Please provide comments.
Thanks! Leo
Leonardo Bras (6): riscv/cmpxchg: Deduplicate cmpxchg() asm functions riscv/cmpxchg: Deduplicate cmpxchg() macros riscv/cmpxchg: Deduplicate arch_cmpxchg() macros riscv/cmpxchg: Deduplicate xchg() asm functions riscv/cmpxchg: Deduplicate xchg() macros riscv/cmpxchg: Deduplicate arch_xchg() macros
arch/riscv/include/asm/cmpxchg.h | 316 +++++++------------------------ 1 file changed, 64 insertions(+), 252 deletions(-)
-- 2.40.0
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