linux-kernel - Re: [PATCH] sb1000.c: stop inlining largish static functions

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Date:	Sat, 12 Apr 2008 05:08:16 -0400
From:	Jeff Garzik <jeff@...zik.org>
To:	Denys Vlasenko <vda.linux@...glemail.com>
CC:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] sb1000.c: stop inlining largish static functions

Denys Vlasenko wrote:
> Hi Jeff,
> 
> Can you take this patch into your net driver fixes tree?
> 
> drivers/net/sb1000.c has lots of inlined static functions.
> 
> Mst of them are used at initialization, wait for some
> hardware register to change (wait using yield, sleep etc),
> or do slow port-based I/O. Inlining thse "for speed" makes no sense.
> 
> This patch removes "inline" from biggest static function
> (regardless of number of callsites - gcc nowadays auto-inlines
> statics with one callsite).
> 
> Size difference for 32bit x86:
> 
>    text    data     bss     dec     hex filename
>    6299     129       0    6428    191c linux-2.6-ALLYES/drivers/net/sb1000.o
>    5418     129       0    5547    15ab linux-2.6.inline-ALLYES/drivers/net/sb1000.o
> 
> (I also see some other optimization opportunities,
> will test and send a patch separately).
> 
> Signed-off-by: Denys Vlasenko <vda.linux@...glemail.com>

applied both patches


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