linux-kernel - Re: [PATCH] modpost: Add flag -f for making section mismatches fatal

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Message-ID: <CAPQV+nP1UJP4R8AmoUf4bt873Yz_D0ZR2msaCRx5eAc49QFodA@mail.gmail.com>
Date:	Sun, 6 Jan 2013 15:22:39 -0500
From:	Jonathan Kliegman <kliegs@...omium.org>
To:	Sam Ravnborg <sam@...nborg.org>
Cc:	linux-kernel@...r.kernel.org, Michal Marek <mmarek@...e.cz>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Tony Lindgren <tony@...mide.com>, linux-kbuild@...r.kernel.org
Subject: Re: [PATCH] modpost: Add flag -f for making section mismatches fatal

On Sun, Jan 6, 2013 at 4:36 AM, Sam Ravnborg <sam@...nborg.org> wrote:
> Hi Jonathan.
>
>> The section mismatch warning can be easy to miss during the kernel build
>> process.  Allow it to be marked as fatal to be easily caught and prevent
>> bugs from slipping in.
>>
>> Signed-off-by: Jonathan Kliegman <kliegs@...omium.org>
>
> Another way to make them much more visible would be to make
> the warnings always be verbose.

I'd like to keep the option for a hard fail if a mismatch is detected.
 This way automated build systems will detect the failed build and can
reject a chan

> In other words drop support for the "-S" options used below:
>>   $(if $(CONFIG_DEBUG_SECTION_MISMATCH),,-S)
>
> Previously the dev* stuff caused a lot of warnings, but
> since we have HOTPLUG always enabled this is a non-issue.
> So I think that this is a good time to enable the verboce
> warnings.
I can submit a second patch for this if you'd like, but I'm not
familiar with all the previous decisions in this area.  If I
understand correctly we'll still need the config option as it also
changes compiler flags for inlining.
>
>         Sam
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