linux-kernel - Re: [RFC][PATCH 00/36] objtool: Make recordmcount a subcommand

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Message-ID: <20200414174702.1d540e24@gandalf.local.home>
Date:   Tue, 14 Apr 2020 17:47:02 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Matt Helsley <mhelsley@...are.com>,
        Julien Thierry <jthierry@...hat.com>,
        linux-kernel@...r.kernel.org, Josh Poimboeuf <jpoimboe@...hat.com>,
        Ingo Molnar <mingo@...hat.com>, Miroslav Benes <mbenes@...e.cz>
Subject: Re: [RFC][PATCH 00/36] objtool: Make recordmcount a subcommand

On Tue, 14 Apr 2020 23:17:54 +0200
Peter Zijlstra <peterz@...radead.org> wrote:

> > Do we want that? Matters how long that takes.  
> 
> We do want that, however it is conditional on CONFIG_DEBUG_ENTRY and
> does some rather specific validation. On a defconfig based kernel it
> takes ~2.5 seconds, significantly more an an allyesconfig.

Is that timed on your laptop, or on the monster machine you normally do your
builds on?

2.5 seconds for you may be 2.5 minutes for others! ;-)

-- Steve