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Date: Fri, 2 Oct 2020 09:13:03 -0500
From: Josh Poimboeuf <jpoimboe@...hat.com>
To: Peter Zijlstra <peterz@...radead.org>
Cc: Miroslav Benes <mbenes@...e.cz>,
Sami Tolvanen <samitolvanen@...gle.com>,
Masahiro Yamada <masahiroy@...nel.org>,
Will Deacon <will@...nel.org>, Steven Rostedt <rostedt@...dmis.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
"Paul E. McKenney" <paulmck@...nel.org>,
Kees Cook <keescook@...omium.org>,
Nick Desaulniers <ndesaulniers@...gle.com>,
clang-built-linux@...glegroups.com,
kernel-hardening@...ts.openwall.com, linux-arch@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-kbuild@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
x86@...nel.org, jthierry@...hat.com
Subject: Re: [PATCH v4 04/29] objtool: Add a pass for generating __mcount_loc
On Thu, Oct 01, 2020 at 03:36:12PM +0200, Peter Zijlstra wrote:
> On Thu, Oct 01, 2020 at 03:17:07PM +0200, Miroslav Benes wrote:
>
> > I also wonder about making 'mcount' command separate from 'check'. Similar
> > to what is 'orc' now. But that could be done later.
>
> I'm not convinced more commands make sense. That only begets us the
> problem of having to run multiple commands.
Agreed, it gets hairy when we need to combine things. I think "orc" as
a separate subcommand was a mistake.
We should change to something like
objtool run [--check] [--orc] [--mcount]
objtool dump [--orc] [--mcount]
--
Josh
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