linux-kernel - Re: [rcu:rcu/next 30/45] include/linux/compiler.h:343:2: error: implicit declaration of function 'smp_read_barrier

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Message-Id: <20171020165032.GK3521@linux.vnet.ibm.com>
Date:   Fri, 20 Oct 2017 09:50:32 -0700
From:   "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:     Mark Rutland <mark.rutland@....com>
Cc:     Will Deacon <will.deacon@....com>,
        kbuild test robot <fengguang.wu@...el.com>,
        kbuild-all@...org, linux-kernel@...r.kernel.org
Subject: Re: [rcu:rcu/next 30/45] include/linux/compiler.h:343:2: error:
 implicit declaration of function 'smp_read_barrier_depends'

On Fri, Oct 20, 2017 at 01:44:07PM +0100, Mark Rutland wrote:
> On Thu, Oct 19, 2017 at 10:46:57AM -0700, Paul E. McKenney wrote:

[ . . . ]

> > OK, this is now in -rcu on branch rcu/alpha.
> > 
> > I then pulled in your commit 8e0bfe6e14e9 ("treewide: kill off ACCESS_ONCE()")
> > on top of this at rcu/alpha-cocci.
> > 
> > Again, the smp_read_barrier_depends() waits until this is in-tree.
> > 
> > Did I get it right, or did I miss something?
> 
> rcu/alpha-cocci looks good to me.
> 
> Thanks for organising this!

And both rcu/alpha and rcu/alpha-cocci have been updated with Will's
changes, FYI.

							Thanx, Paul