Re: [PATCH 2/2] tools/memory-model: Add write ordering by release-acquire and by locks

From: Andrea Parri
Date: Thu Jul 05 2018 - 11:39:20 EST

> > At any rate, it looks like instead of strengthening the relation, I
> > should write a patch that removes it entirely. I also will add new,
> > stronger relations for use with locking, essentially making spin_lock
> > and spin_unlock be RCsc.
> Only in the presence of smp_mb__after_unlock_lock() or
> smp_mb__after_spinlock(), correct? Or am I confused about RCsc?

There are at least two definitions of RCsc: one as documented in the header
comment for smp_mb__after_spinlock() or rather in the patch under review...,
one as processor architects used to intend it. ;-)

> Thanx, Paul