Messages in this thread | | | Date | Mon, 4 Jan 2016 16:11:23 +0000 | From | Russell King - ARM Linux <> | Subject | Re: [PATCH 1/3] checkpatch.pl: add missing memory barriers |
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On Mon, Jan 04, 2016 at 08:07:40AM -0800, Joe Perches wrote: > On Mon, 2016-01-04 at 13:36 +0200, Michael S. Tsirkin wrote: > > + my $all_barriers = join('|', (@barriers, @smp_barriers)); > > + > > + if ($line =~ /\b($all_barriers)\(/) { > > It would be better to use /\b$all_barriers\s*\(/ > as there's no reason for the capture and there > could be a space between the function and the > open parenthesis.
I think you mean
/\b(?:$all_barriers)\s*\(/
as 'all_barriers' will be:
mb|wmb|rmb|smp_mb|smp_wmb|smp_rmb
and putting that into your suggestion results in:
/\bmb|wmb|rmb|smp_mb|smp_wmb|smp_rmb\s*\(/
which is clearly wrong - the \b only applies to 'mb' and the \s*\( only applies to smp_rmb.
-- RMK's Patch system: http://www.arm.linux.org.uk/developer/patches/ FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net.
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