netdev - Re: [PATCH 9/9] treewide: Remove newlines inside DEFINE_PER

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <5628D148.7000102@suse.com>
Date:	Thu, 22 Oct 2015 14:06:32 +0200
From:	Michal Marek <mmarek@...e.com>
To:	Prarit Bhargava <prarit@...hat.com>
Cc:	linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-ia64@...r.kernel.org, xen-devel@...ts.xenproject.org,
	linux-acpi@...r.kernel.org, rds-devel@....oracle.com,
	netdev@...r.kernel.org
Subject: Re: [PATCH 9/9] treewide: Remove newlines inside DEFINE_PER_CPU()
 macros

On 2015-10-22 13:31, Prarit Bhargava wrote:
> 
> 
> On 10/21/2015 03:52 PM, Michal Marek wrote:
>> Dne 21.10.2015 v 21:27 Prarit Bhargava napsal(a):
>>> On 10/15/2015 04:16 PM, Michal Marek wrote:
>>>> Otherwise make tags can't parse them:
>>>>
>>>> ctags: Warning: arch/ia64/kernel/smp.c:60: null expansion of name pattern "\1"
>>>> ctags: Warning: drivers/xen/events/events_2l.c:41: null expansion of name pattern "\1"
>>>> ctags: Warning: drivers/acpi/processor_idle.c:64: null expansion of name pattern "\1"
>>>> ctags: Warning: kernel/locking/lockdep.c:153: null expansion of name pattern "\1"
>>>> ctags: Warning: kernel/workqueue.c:305: null expansion of name pattern "\1"
>>>> ctags: Warning: kernel/rcu/rcutorture.c:133: null expansion of name pattern "\1"
>>>> ctags: Warning: kernel/rcu/rcutorture.c:135: null expansion of name pattern "\1"
>>>> ctags: Warning: net/rds/page.c:45: null expansion of name pattern "\1"
>>>> ctags: Warning: net/ipv4/syncookies.c:53: null expansion of name pattern "\1"
>>>> ctags: Warning: net/ipv6/syncookies.c:44: null expansion of name pattern "\1"
>>>
>>> I guarantee you're going to end up fixing this issue over and over again as more
>>> code is added in.
>>
>> This is certainly going to happen, but it should be quickly spotted by
>> anybody running make tags on linux-next. And 10 instances since the
>> beginning of git is not too many.
> 
> Not everyone uses 'make tags'.  'make cscope' exists and functions correctly ;)

cscope works, but unfortunately it cannot be extended to understand the
preprocessor constructs. But it does not suffer from the problem at
hand, obviously.


>> It's not ctags itself parsing the DEFINE_PER_CPU() macro, but a
>> user-supplied regex specified on commandline. Which can only operate on
>> single lines.
>>
> 
> What's the regex?

See
https://lkml.kernel.org/r/1444940195-28272-9-git-send-email-mmarek@suse.com

It used to require a closing parenthesis, so it would not match the
multiline macro invocations at all. Now it matches them, but ctags
correctly warns that the empty string is probably not what we intended
to match.

Michal
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html