linux-kernel - Re: tinyconfig x86-32 vmlinux sizes by gcc compiler version

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

Date:	Thu, 4 Dec 2014 14:25:21 -0800
From:	josh@...htriplett.org
To:	Joe Perches <joe@...ches.com>
Cc:	LKML <linux-kernel@...r.kernel.org>
Subject: Re: tinyconfig x86-32 vmlinux sizes by gcc compiler version

On Thu, Dec 04, 2014 at 01:32:59PM -0800, Joe Perches wrote:
> Just fyi.
> 
> At least for x86-32, it seems later versions of gcc
> are producing smaller images.
> 
> $ size vmlinux.*
>    text	   data	    bss	    dec	    hex	filename
>  657725	 118496	1189040	1965261	 1dfccd	vmlinux.4.4
>  633563	 118528	1189448	1941539	 1da023	vmlinux.4.6
>  633277	 118496	1189592	1941365	 1d9f75	vmlinux.4.7
>  632299	 121120	1192784	1946203	 1db25b	vmlinux.4.9

I would certainly hope that GCC's -Os gets better over time.  However, I
find the increase in data/bss and thus overall size in 4.9 concerning.
Any idea what that comes from?

- Josh Triplett
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/