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From: Jaswinder Singh <jaswinder@infradead.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: Re: [git pull] x86: declaration fixes
Date: Tue, 22 Jul 2008 11:27:01 +0530	[thread overview]
Message-ID: <1216706221.2595.8.camel@jaswinder.satnam> (raw)
In-Reply-To: <20080721180439.GA13720@elte.hu>

Hello Ingo,

On Mon, 2008-07-21 at 20:04 +0200, Ingo Molnar wrote:
> * Jaswinder Singh <jaswinder@infradead.org> wrote:
> 

> another thing:
> 
> --- a/include/asm-x86/signal.h
> +++ b/include/asm-x86/signal.h
> 
> +void do_notify_resume(struct pt_regs *, void *, __u32);
> +
> 
> please add "extern" to each such prototype declaration. (the same is 
> true for a handful of other prototypes you've added - please re-review 
> and fix them)
> 

I was trying to follow other functions declaration in the file.

function declaration without extern :-

http://git.infradead.org/users/jaswinder/linux-2.6-tip.git?a=commitdiff;h=f740a1e1bbee2ce8a0b1b97361771db40afc37d2
http://git.infradead.org/users/jaswinder/linux-2.6-tip.git?a=commitdiff;h=b7b5113220da95eaa8b75ebd5bbd5278eed122e5

function declaration with extern :-

http://git.infradead.org/users/jaswinder/linux-2.6-tip.git?a=commitdiff;h=8cac4294a5e9b036c30d30e2e894e74201ee1c6b
http://git.infradead.org/users/jaswinder/linux-2.6-tip.git?a=commitdiff;h=e7d3d48dbf3e517e2e827a2adc6a2f861b16e6a6
http://git.infradead.org/users/jaswinder/linux-2.6-tip.git?a=commitdiff;h=feb49274338051ddf11d16f67b08ee6cafb32dbf

But you are emphasizing to use extern for all function declarations.

With current gcc, I think using extern with function declaration is :-
1. Wastage of time
2. Wastage of energy
3. Increase file size with 7 bytes for each extern.

If there is any secret behind using extern in kernel header files.
Please let me know.

Thank you,

Jaswinder Singh.


  parent reply	other threads:[~2008-07-22  5:58 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-07-21 17:47 Jaswinder Singh
2008-07-21 18:04 ` Ingo Molnar
2008-07-22  3:18   ` Jaswinder Singh
2008-07-22  5:57   ` Jaswinder Singh [this message]
2008-07-22 19:36 Jaswinder Singh

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