linux-kernel - Re: [Patch] kbuild: fix headers

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Message-ID: <4A28F1CD.6040804@redhat.com>
Date:	Fri, 05 Jun 2009 18:22:05 +0800
From:	Amerigo Wang <amwang@...hat.com>
To:	Arnd Bergmann <arnd@...db.de>
CC:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	sam@...nborg.org, linux-kbuild@...r.kernel.org
Subject: Re: [Patch] kbuild: fix headers_check.pl

Arnd Bergmann wrote:
> On Friday 05 June 2009, Amerigo Wang wrote:
>   
>> -sub check_prototypes
>> +sub check_declarations
>>  {
>> -       if ($line =~ m/^\s*extern\b/) {
>> -               printf STDERR "$filename:$lineno: extern's make no sense in userspace\n";
>> +       if ($line =~m/^\s*extern\b/) {
>> +               if ($line =~ m/^\s*extern\b.*\(.*\)/) {
>> +                       printf STDERR "$filename:$lineno: extern's make no sense in userspace\n";
>> +               } else {
>> +                       printf STDERR "$filename:$lineno: exporting global variable to userspace is suspicious\n";
>> +               }
>>         }
>>  }
>>     
>
> I don't think we really need that distinction here, the old
> text applies to both.
Even for function declarations?
> But please find a way to get rid of
> the "extern's".
>   
Here, that one has already been removed by other patch ...

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