linux-kernel - Re: [PATCH] kbuild: Do not run modules

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Date:	Fri, 4 Jul 2014 16:45:54 -0700
From:	Andy Lutomirski <luto@...capital.net>
To:	Michal Marek <mmarek@...e.cz>
Cc:	"H. Peter Anvin" <hpa@...or.com>, X86 ML <x86@...nel.org>,
	"linux-kbuild@...r.kernel.org" <linux-kbuild@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] kbuild: Do not run modules_install and install in paralel

On Fri, Jul 4, 2014 at 3:15 PM, Michal Marek <mmarek@...e.cz> wrote:
> Dne 13.6.2014 19:29, Andy Lutomirski napsal(a):
>> On Fri, Jun 13, 2014 at 2:45 AM, Michal Marek <mmarek@...e.cz> wrote:
>>> Dne 13.6.2014 11:39, Michal Marek napsal(a):
>>>> Based on a x86-only patch by Andy Lutomirski <luto@...capital.net>
>>>>
>>>> With modular kernels, 'make install' is going to need the installed
>>>> modules at some point to generate the initramfs.
>>>>
>>>> Signed-off-by: Michal Marek <mmarek@...e.cz>
>>>> ---
>>>>  Makefile | 6 ++++++
>>>>  1 file changed, 6 insertions(+)
>>>>
>>>> diff --git a/Makefile b/Makefile
>>>> index 7680d7c..7e5e483 100644
>>>> --- a/Makefile
>>>> +++ b/Makefile
>>>> @@ -503,6 +503,12 @@ ifeq ($(KBUILD_EXTMOD),)
>>>>                  endif
>>>>          endif
>>>>  endif
>>>> +# install and module_install need also be processed one by one
>>>> +ifneq ($(filter install,$(MAKECMDGOALS)),)
>>>> +        ifneq ($(filter modules_install,$(MAKECMDGOALS)),)
>>>> +             mixed-targets := 1
>>>> +        endif
>>>> +endif
>>>
>>> Note that this version does not enforce the ordering, it just avoids the
>>> interleaved execution. It can be added if desired.
>>
>> Hmm.  This will fix 'make modules_install install' but will not fix
>> 'make install modules_install'.  I don't know how many people would
>> type the latter.
>
> Resuming a thread from last month -- As I said, it does not enforce the
> ordering. So it's not as bullet-proof as your patch, but it works on all
> architectures. I'm thinking about adding the patch to kbuild.git for
> 3.17. But if you want to fix the ordering as well, feel free to change
> the __build_one_by_one rule to do this.

Sounds good to me.

Where's __build_one_by_one?

--Andy

>
> Thanks,
> Michal



-- 
Andy Lutomirski
AMA Capital Management, LLC
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