linux-kernel - Re: [tip: objtool/core] objtool/klp: Add --debug option to show cloning decisions

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Message-ID: <wi54qqmdbzuajt7f5krknhcibs7pj45zhf42n3z5nyqujoabgz@hbduuwymyufh>
Date: Fri, 31 Oct 2025 09:11:44 -0700
From: Josh Poimboeuf <jpoimboe@...nel.org>
To: Borislav Petkov <bp@...en8.de>
Cc: Nathan Chancellor <nathan@...nel.org>, linux-kernel@...r.kernel.org, 
	linux-tip-commits@...r.kernel.org, Petr Mladek <pmladek@...e.com>, 
	Joe Lawrence <joe.lawrence@...hat.com>, x86@...nel.org
Subject: Re: [tip: objtool/core] objtool/klp: Add --debug option to show
 cloning decisions

On Fri, Oct 31, 2025 at 03:21:00PM +0100, Borislav Petkov wrote:
> On Fri, Oct 31, 2025 at 10:09:44AM -0400, Nathan Chancellor wrote:
> > Yeah, that looks good to me and matches the workaround that Peter did in
> > include/linux/compiler-clang.h. If cleanup is going to be used more in
> > objtool, it might be worth taking that approach there too like:
> > 
> >   #ifdef __clang__
> >   #define __cleanup(func) __maybe_unused __attribute__((__cleanup__(func)))
> >   #else
> >   #define __cleanup(func) __attribute__((__cleanup__(func)))
> >   #endif
> 
> LGTM.
> 
> I'll wait for the objool-er folks to lemme know what they want before
> I productize it.
> 
> Thx Nathan!

How about __maybe_unused unconditionally without the #ifdef damage?

-- 
Josh