Messages in this thread | | | Date | Thu, 7 Jan 2021 13:45:32 +0100 | From | Peter Zijlstra <> | Subject | Re: [PATCH v2 5/5] csky: Cleanup asm/spinlock.h |
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On Sun, Dec 20, 2020 at 03:39:23PM +0000, guoren@kernel.org wrote: > From: Guo Ren <guoren@linux.alibaba.com> > > There are two implementation of spinlock in arch/csky: > - simple one (NR_CPU = 1,2) > - tick's one (NR_CPU = 3,4) > Remove the simple one. > > There is already smp_mb in spinlock, so remove the definition of > smp_mb__after_spinlock.
Where ? Note that with qspinlock the fast path is atomic_try_cmpxchg_acquire(), which does not imply anything of the sort.
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