linux-kernel - Re: [PATCH v2] scripts/link-vmlinux.sh: Add alias to duplicate symbols for kallsyms

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Message-ID: <ZLVxUQiC5iF+xTPQ@bombadil.infradead.org>
Date:   Mon, 17 Jul 2023 09:50:25 -0700
From:   Luis Chamberlain <mcgrof@...nel.org>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     Alessandro Carminati <alessandro.carminati@...il.com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Nicolas Schier <nicolas@...sle.eu>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Daniel Bristot de Oliveira <bristot@...nel.org>,
        Viktor Malik <vmalik@...hat.com>, linux-kernel@...r.kernel.org,
        linux-kbuild@...r.kernel.org, linux-trace-kernel@...r.kernel.org,
        Nick Alcock <nick.alcock@...cle.com>, eugene.loh@...cle.com,
        kris.van.hees@...cle.com, live-patching@...r.kernel.org
Subject: Re: [PATCH v2] scripts/link-vmlinux.sh: Add alias to duplicate
 symbols for kallsyms

On Mon, Jul 17, 2023 at 10:52:40AM -0400, Steven Rostedt wrote:
> Honestly, I think the "_alias_<some-random-number>" is useless. It doesn't
> give you any clue to what function you are actually attaching to. 

Agreed.

> There's
> been other approaches that show module and/or file names. I know there's
> still some issues with getting those accepted, but I much rather have them
> than this!
> 
> See: https://lore.kernel.org/all/20221205163157.269335-1-nick.alcock@oracle.com/

Yes, please coordinate with Nick and review each other's work, now we
have two separate efforts with different reasons but hopefully we'll
come back with one unified solution.

Please Cc live-patching also, as they had suggested before just to
provide the file filename + line number, that'll make it even more
valuable.

  Luis