linux-kernel - Re: [PATCH] gpio: 104-dio-48e: make array 'ports' static, shrinks object size

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <20180426130242.GA10587@sophia>
Date:   Thu, 26 Apr 2018 09:02:42 -0400
From:   William Breathitt Gray <vilhelm.gray@...il.com>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     Colin King <colin.king@...onical.com>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        kernel-janitors@...r.kernel.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] gpio: 104-dio-48e: make array 'ports' static, shrinks
 object size

On Thu, Apr 26, 2018 at 11:06:05AM +0200, Linus Walleij wrote:
>On Thu, Apr 5, 2018 at 2:00 PM, Colin King <colin.king@...onical.com> wrote:
>
>> From: Colin Ian King <colin.king@...onical.com>
>>
>> Don't populate the const read-only array 'ports' on the stack but instead
>> make it static. Makes the object code smaller by over 100 buytes:
>>
>> Before:
>>    text    data     bss     dec     hex filename
>>   10959    4952     832   16743    4167 drivers/gpio/gpio-104-dio-48e.o
>>
>> After:
>>    text    data     bss     dec     hex filename
>>   10790    5008     832   16630    40f6 drivers/gpio/gpio-104-dio-48e.o
>>
>> (gcc version 7.2.0 x86_64)
>>
>> Signed-off-by: Colin Ian King <colin.king@...onical.com>
>
>Patch applied with William's ACK.
>
>Yours,
>Linus Walleij

Hi Linus,

A more recent version of this patch including similar changes to
gpio-gpio-mm.c and gpio-104-idi-48.c is located here:
https://lkml.org/lkml/2018/4/18/613

William Breathitt Gray