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SubjectRe: [PATCH] kbuild: Do not run modules_install and install in paralel
On 2014-07-05 01:45, Andy Lutomirski wrote:
> On Fri, Jul 4, 2014 at 3:15 PM, Michal Marek <mmarek@suse.cz> wrote:
>> Dne 13.6.2014 19:29, Andy Lutomirski napsal(a):
>>> On Fri, Jun 13, 2014 at 2:45 AM, Michal Marek <mmarek@suse.cz> wrote:
>>>> Dne 13.6.2014 11:39, Michal Marek napsal(a):
>>>>> Based on a x86-only patch by Andy Lutomirski <luto@amacapital.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@suse.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?

A few lines below in the main Makefile:

513 ifeq ($(mixed-targets),1)
514 #
======================================================================
=====
515 # We're called with mixed targets (*config and build targets).
516 # Handle them one by one.
517
518 PHONY += $(MAKECMDGOALS) __build_one_by_one
519
520 $(filter-out __build_one_by_one, $(MAKECMDGOALS)):
__build_one_by_one
521 @:
522
523 __build_one_by_one:
524 $(Q)set -e; \
525 for i in $(MAKECMDGOALS); do \
526 $(MAKE) -f $(srctree)/Makefile $$i; \
527 done

Michal


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