linux-kernel - Re: [PATCH RESEND 0/2] kbuild: dead code elimination: ftrace fixes

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Message-ID: <20161222190854.6604e386@roar.ozlabs.ibm.com>
Date:   Thu, 22 Dec 2016 19:08:54 +1000
From:   Nicholas Piggin <npiggin@...il.com>
To:     Marcin Nowakowski <marcin.nowakowski@...tec.com>
Cc:     Arnd Bergmann <arnd@...db.de>, <linux-kernel@...r.kernel.org>,
        Michal Marek <mmarek@...e.com>
Subject: Re: [PATCH RESEND 0/2] kbuild: dead code elimination: ftrace fixes

On Thu, 22 Dec 2016 09:51:45 +0100
Marcin Nowakowski <marcin.nowakowski@...tec.com> wrote:

> Enabling dead code & data elimination currently breaks ftrace operation,
> as the __mcount_loc section is removed (as it is not referenced directly
> anywhere in the code).
> Moreover, there are a lot of entries missing in the __mcount_loc section
> as the recordmcount tool doesn't currently properly handle the section
> names as created by the use of -ffunction-sections.

Thanks for keeping on top of these. I didn't have any objections, so
if you would send them to Michal Marek for merge and cc linux-kbuild
that would be appreciated.

Thanks,
Nick