linux-kernel - Re: [POC][RFC][PATCH 1/2] jump_function: Addition of new feature "jump

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Message-ID: <20181006111651.0b010935@gandalf.local.home>
Date:   Sat, 6 Oct 2018 11:16:51 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Andy Lutomirski <luto@...capital.net>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        linux-kernel@...r.kernel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Ingo Molnar <mingo@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Matthew Helsley <mhelsley@...are.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        David Woodhouse <dwmw2@...radead.org>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Jason Baron <jbaron@...mai.com>, Jiri Kosina <jkosina@...e.cz>,
        ard.biesheuvel@...aro.org, Andy Lutomirski <luto@...nel.org>
Subject: Re: [POC][RFC][PATCH 1/2] jump_function: Addition of new feature
 "jump_function"

On Sat, 6 Oct 2018 08:13:18 -0700
Andy Lutomirski <luto@...capital.net> wrote:

> > Perhaps a gcc plugin might work too.
> >   
> 
> My suggestion was to have objtool do the dirty work. Josh said something suspiciously like “sounds fun” on IRC :)
> 

objtool does basically the same thing as recordmcount does. Josh and I
have both said that it's on our todo list to combine the two and make it
more generic for operations like this.

Seems like now's the time to do it.

-- Steve