Re: [PATCH v2 1/3] checkpatch.pl: add missing memory barriers

From: Michael S. Tsirkin
Date: Sun Jan 10 2016 - 14:29:24 EST


On Sun, Jan 10, 2016 at 07:17:31AM -0800, Joe Perches wrote:
> On Sun, 2016-01-10 at 07:07 -0800, Joe Perches wrote:
> > On Sun, 2016-01-10 at 13:56 +0200, Michael S. Tsirkin wrote:
> > > SMP-only barriers were missing in checkpatch.pl
> > >
> > > Refactor code slightly to make adding more variants easier.
> > []
> > > diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> []
> > If I use a variable called $smp_barriers, I'd expect
> > it to actually be the smp_barriers, not to have to
> > prefix it with smp_ before using it.
> >
> > my $smp_barriers = qr{
> > smp_store_release|
> > smp_load_acquire|
> > smp_store_mb|
> > smp_read_barrier_depends
>
> That's missing (?:barriers) too.

My version has it but need to add ?: to avoid
a capture group.

> btw: shouldn't this also have
> smp_mb__(?:before|after)_atomic
> ?

Good catch, included in the next version.

--
MST