linux-kernel - Re: [POC][RFC][PATCH] build: Make weak functions visible in kallsyms

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Message-ID: <CAHk-=wi5JZ62=FFZQi2=doEOwTf4sa=cO+iAFEvnwBr0o7687w@mail.gmail.com>
Date: Thu, 26 Dec 2024 19:03:56 -0800
From: Linus Torvalds <torvalds@...ux-foundation.org>
To: Masahiro Yamada <masahiroy@...nel.org>
Cc: Steven Rostedt <rostedt@...dmis.org>, LKML <linux-kernel@...r.kernel.org>, 
	Linux Trace Kernel <linux-trace-kernel@...r.kernel.org>, bpf <bpf@...r.kernel.org>, 
	linux-kbuild@...r.kernel.org, Masami Hiramatsu <mhiramat@...nel.org>, 
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, Peter Zijlstra <peterz@...radead.org>, 
	Nathan Chancellor <nathan@...nel.org>, Nicolas Schier <nicolas@...sle.eu>, 
	Zheng Yejian <zhengyejian1@...wei.com>, Martin Kelly <martin.kelly@...wdstrike.com>, 
	Christophe Leroy <christophe.leroy@...roup.eu>, Josh Poimboeuf <jpoimboe@...hat.com>, 
	Mark Rutland <mark.rutland@....com>
Subject: Re: [POC][RFC][PATCH] build: Make weak functions visible in kallsyms

On Thu, 26 Dec 2024 at 18:52, Masahiro Yamada <masahiroy@...nel.org> wrote:
>
> So, does the kallsyms patch set from Zheng Yejian fix the issues?

[ Me goes searching ]

Oh. Instead of adding size information, it seems to add fake "hole"
entries to the kallsyms.

And I guess that works too. It does feel a bit hacky, but at least
it's integrated with the kallsyms logic.

                Linus