linux-kernel - Re: [RFC PATCH 0/1] support ftrace and -ffunction-sections

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Message-ID: <02ee4864-21aa-d150-b376-d6a775d7cc7d@redhat.com>
Date:   Wed, 28 Nov 2018 09:59:01 -0500
From:   Joe Lawrence <joe.lawrence@...hat.com>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     linux-kernel@...r.kernel.org,
        Masahiro Yamada <yamada.masahiro@...ionext.com>
Subject: Re: [RFC PATCH 0/1] support ftrace and -ffunction-sections

On 11/27/2018 09:09 PM, Steven Rostedt wrote:
> On Tue, 27 Nov 2018 15:27:14 -0500
> Joe Lawrence <joe.lawrence@...hat.com> wrote:
> 
>> Gentle ping...  I took a dive through the rhkl-archives and found a few
>> older discussions:
> 
> Thanks for the reminder, my INBOX is totally out of control with
> Plumbers followed by Turkey Day.
> 
> [ ... snip ... ]
> 
> I'm fine with just applying your patch. Today, for x86, there's a gcc
> option that adds the __mcount_loc automatically without doing any
> whitelisting (it doesn't run recordmcount.*). It just adds anything that
> is traced, thus it has to work for all possible cases now.
> 

Ah right, -mcount-record ...  I must have been using an older gcc w/o
-mcount-record in my testing.  Thanks for taking a look and merging.

Regards,

-- Joe