linux-kernel - Re: objtool warnings for kernel/trace/trace_selftest

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Message-ID: <20181218184012.10495779@gandalf.local.home>
Date:   Tue, 18 Dec 2018 18:40:12 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Andi Kleen <ak@...ux.intel.com>
Cc:     Martin Jambor <mjambor@...e.cz>, Miroslav Benes <mbenes@...e.cz>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Arnd Bergmann <arnd@...db.de>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        the arch/x86 maintainers <x86@...nel.org>
Subject: Re: objtool warnings for kernel/trace/trace_selftest_dynamic.o

On Tue, 18 Dec 2018 15:26:36 -0800
Andi Kleen <ak@...ux.intel.com> wrote:

> > I thought that someone said that "used" would also prevent inlining.  
> 
> that's not correct. You need noinline

Sure, whatever. That's besides the point.

The thing is, I don't need noclone. Just remove that and keep the
noiniline, and if that keeps the functions in that file still able to
be function traced, then I'm happy.

I was only explaining why I mentioned "used" in the previous email. If
you read the part that you cut off in your reply, I said "But
regardless, whatever it takes to not let the functions be inlined is
indeed good enough."

I don't care if that's "used" on "noinline", you didn't need to waste
your time to post the assembly.

-- Steve