linux-kernel - Re: [PATCH] kbuild: add CONFIG_VMLINUX

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Message-ID: <66943f68-c01e-2f20-f0f0-ad63375c3209@rasmusvillemoes.dk>
Date:   Thu, 4 Mar 2021 23:47:57 +0100
From:   Rasmus Villemoes <linux@...musvillemoes.dk>
To:     Rasmus Villemoes <linux@...musvillemoes.dk>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Michal Marek <michal.lkml@...kovi.net>
Cc:     linux-kernel@...r.kernel.org, linux-kbuild@...r.kernel.org
Subject: Re: [PATCH] kbuild: add CONFIG_VMLINUX_MAP expert option

On 24/02/2021 11.52, Rasmus Villemoes wrote:
> It can be quite useful to have ld emit a link map file, in order to
> debug or verify that special sections end up where they are supposed
> to, and to see what LD_DEAD_CODE_DATA_ELIMINATION manages to get rid
> of.
> 
> The only reason I'm not just adding this unconditionally is that the
> .map file can be rather large (several MB), and that's a waste of
> space when one isn't interested in these things. Also hide the prompt
> behind CONFIG_EXPERT.

ping