linux-kernel - Re: [PATCH v2 8/8] treewide: Remove newlines inside DEFINE_PER

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Date:	Mon, 7 Dec 2015 18:19:21 +0100
From:	Michal Marek <mmarek@...e.com>
To:	Joe Perches <joe@...ches.com>
Cc:	David Laight <David.Laight@...LAB.COM>,
	"linux-kbuild@...r.kernel.org" <linux-kbuild@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-ia64@...r.kernel.org" <linux-ia64@...r.kernel.org>,
	"xen-devel@...ts.xenproject.org" <xen-devel@...ts.xenproject.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"rds-devel@....oracle.com" <rds-devel@....oracle.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH v2 8/8] treewide: Remove newlines inside DEFINE_PER_CPU()
 macros

On 2015-12-07 18:04, Joe Perches wrote:
> On Mon, 2015-12-07 at 17:53 +0100, Michal Marek wrote:
>> On 2015-12-07 17:33, David Laight wrote:
>>> From: Michal Marek
>>>> Sent: 04 December 2015 15:26
>>>> Otherwise make tags can't parse them:
>>>>
>>>> ctags: Warning: arch/ia64/kernel/smp.c:60: null expansion of name pattern "\1"
>>> ...
>>>
>>> Seems to me you need to fix ctags.
>>
>> I'm sure the maintainers of ctags and etags would accept patches to
>> describe a custom context-free grammar via commandline options, but
>> until then, let's continue using the regular expressions in tags.sh and
>> remove newlines in macros that tags.sh is trying to expand.
>>
> 
> Do you have a list of the most common macros?

In practice, it's only DEFINE_PER_CPU and its sibling
DEFINE_PER_CPU_SHARED_ALIGNED, where we try to pick the second argument
to the macro and the first argument can be lengthy.


> Perhaps it'd be good to add exceptions to checkpatch
> 80 column line rules for them.

Your call. But this is a fairly rare occurrence -- 10 cases so far.

Michal
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