linux-kernel - Re: [PATCH] drivers/char/specialix.c: stop inlining largish static functions

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Message-ID: <20080408114321.GB1236@bitwizard.nl>
Date:	Tue, 8 Apr 2008 13:43:21 +0200
From:	Rogier Wolff <R.E.Wolff@...Wizard.nl>
To:	Denys Vlasenko <vda.linux@...glemail.com>
Cc:	Alan Cox <alan@...rguk.ukuu.org.uk>, linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org, R.E.Wolff@...wizard.nl
Subject: Re: [PATCH] drivers/char/specialix.c: stop inlining largish static functions

On Tue, Apr 08, 2008 at 12:44:53PM +0200, Denys Vlasenko wrote:
> Hi Alan,
> 
> drivers/char/specialix.c has unusually large number
> of static inline functions - 22.
> 
> I looked through them. The file is positively inline-happy.
> Inlines with udelay() calls. Inlines with complex loops.
> Nested inlines. Rarely called inlines (e.g. with request_region
> inside).
> 
> This patch removes "inline" from 15 static functions
> (regardless of number of callsites - gcc nowadays auto-inlines
> statics with one callsite).
> 
> Size difference for 32bit x86:
>    text    data     bss     dec     hex filename
>   21669     204    8780   30653    77bd linux-2.6-ALLYES/drivers/char/specialix.o
>   18470     204    8780   27454    6b3e linux-2.6.inline-ALLYES/drivers/char/specialix.o
> 
> 
> Signed-off-by: Denys Vlasenko <vda.linux@...glemail.com>

Ack!

Signed-off-by: Rogier Wolff <R.E.Wolff@...Wizard.nl> 

	Roger. 

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