linux-kernel - Re: [PATCH v3] kbuild: add debug level and macro defs options

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Message-ID: <CAKwvOdkPwbD-c0V-up2Ufzb-Uh7LLyD12X0FKeBa=hn+cSPA9Q@mail.gmail.com>
Date:   Mon, 22 Aug 2022 14:36:14 -0700
From:   Nick Desaulniers <ndesaulniers@...gle.com>
To:     Dmitrii Bundin <dmitrii.bundin.a@...il.com>
Cc:     Masahiro Yamada <masahiroy@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Dan Williams <dan.j.williams@...el.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Isabella Basso <isabbasso@...eup.net>,
        Josh Poimboeuf <jpoimboe@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Fangrui Song <maskray@...gle.com>,
        Michal Marek <michal.lkml@...kovi.net>,
        Nathan Chancellor <nathan@...nel.org>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Vlastimil Babka <vbabka@...e.cz>
Subject: Re: [PATCH v3] kbuild: add debug level and macro defs options

On Mon, Aug 22, 2022 at 9:45 AM Nick Desaulniers
<ndesaulniers@...gle.com> wrote:
>
> > So it seems like a reasonable choice to provide a debug info
> > level config that would explicitly set the level without relying on
> > implicits. The default value of the config is set to -g2 to not change
> > the build behavior that was before introducing the option. And it
> > works for both older and newer versions of GCC/Clang in the same way.
> > The benefits of the -g1 option are indeed questionable except that it
> > produces an image with ~20% less in size.
>
> Until there's a concrete need, YAGNI.

Or add -g1 to CONFIG_DEBUG_INFO_REDUCED.
-- 
Thanks,
~Nick Desaulniers