linux-kernel - Re: [PATCH] Makefile: support compressed debug info

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Message-ID: <CA+icZUUvdso=R3579RReTFk=ts0rNNCwcx9ydGGsG++sT8=abQ@mail.gmail.com>
Date:   Tue, 12 May 2020 22:06:35 +0200
From:   Sedat Dilek <sedat.dilek@...il.com>
To:     Fangrui Song <maskray@...gle.com>
Cc:     Nick Desaulniers <ndesaulniers@...gle.com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Nick Desaulniers <nick.desaulniers@...il.com>,
        Michal Marek <michal.lkml@...kovi.net>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Changbin Du <changbin.du@...el.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Clang-Built-Linux ML <clang-built-linux@...glegroups.com>
Subject: Re: [PATCH] Makefile: support compressed debug info

On Tue, May 12, 2020 at 10:01 PM Fangrui Song <maskray@...gle.com> wrote:
>
> On 2020-05-12, Nick Desaulniers wrote:
...
> >I have a patch series that enables dwarf5 support in the kernel that
> >I'm working up to.  I wanted to send this first.  Both roughly reduce
> >the debug info size by 20% each, though I haven't measured them
> >together, yet.  Requires ToT binutils because there have been many
> >fixes from reports of mine recently.
>
> This will be awesome! I also heard that enabling DWARF v5 for our object
> files can easily make debug info size smaller by 20%. Glad that the
> kernel can benefit it as well:)

Please CC me on your pathcset - 20% smaller - I flip out.

- Sedat -