Hi Peter, On Thu, Jan 7, 2021 at 7:19 PM Peter Zijlstra <pet...@infradead.org> wrote: > > On Sun, Dec 20, 2020 at 03:39:19PM +0000, guo...@kernel.org wrote: > > From: Guo Ren <guo...@linux.alibaba.com> > > > > Use generic atomic implementation based on cmpxchg. So remove csky > > asm/atomic.h. > > Clarification would be good. Typically cmpxchg() loops perform > sub-optimal on LL/SC architectures, due to the double loop construction.
Yes, you are right. But I still want to use comm cmpxchg instead of my implementation. Maybe in the future, we'll optimize it back. -- Best Regards Guo Ren ML: https://lore.kernel.org/linux-csky/
