On Sun, Dec 20, 2020 at 03:39:23PM +0000, guoren@xxxxxxxxxx wrote: > From: Guo Ren <guoren@xxxxxxxxxxxxxxxxx> > > 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.
