linux-kernel - Re: [PATCH] video: fbdev: radeon: make const array post

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Date:   Thu, 12 Oct 2017 18:30:32 +0200
From:   Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
To:     Colin Ian King <colin.king@...onical.com>
Cc:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        linux-fbdev@...r.kernel.org, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH] video: fbdev: radeon: make const array post_divs
 static, reduces object code size

On Thursday, October 12, 2017 05:17:49 PM Colin Ian King wrote:
> On 12/10/17 17:17, Bartlomiej Zolnierkiewicz wrote:
> > 
> > [ added dri-devel ML to cc: ]
> > 
> > On Tuesday, September 19, 2017 10:32:01 PM Colin King wrote:
> >> From: Colin Ian King <colin.king@...onical.com>
> >>
> >> Don't populate the read-only const array post_divs on the stack,
> >> nstead make it static. Makes the object code smaller by 90 bytes:
> >>
> >> Before:
> >>    text	   data	    bss	    dec	    hex	filename
> >>   40231	   8584	    896	  49711	   c22f	radeon_base.o
> >>
> >> After:
> >>    text	   data	    bss	    dec	    hex	filename
> >>   39914	   8744	    960	  49618	   c1d2	radeon_base.o
> >>
> >> Signed-off-by: Colin Ian King <colin.king@...onical.com>
> > 
> > Are these results obtained using the same compiler as the other patches
> > (gcc version 7.2.0, x86_64)?
> 
> Yes, I forgot to annotate it.

Patch queued for 4.15 (with updated patch description), thanks.

Best regards,
--
Bartlomiej Zolnierkiewicz
Samsung R&D Institute Poland
Samsung Electronics