linux-kernel - Re: [RFC PATCH] Don't reset timestamps in include/generated if not needed

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Message-ID: <5502B546.5010806@suse.cz>
Date:	Fri, 13 Mar 2015 11:00:38 +0100
From:	Michal Marek <mmarek@...e.cz>
To:	Masahiro Yamada <yamada.masahiro@...ionext.com>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Valdis Kletnieks <Valdis.Kletnieks@...edu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>
Subject: Re: [RFC PATCH] Don't reset timestamps in include/generated if not
 needed

Dne 13.3.2015 v 05:59 Masahiro Yamada napsal(a):
> 2015-03-11 19:01 GMT+09:00 Michal Marek <mmarek@...e.cz>:
>> We already have it and it is called "filechk." Valdis, can you check if
>> the below patch works equally well for you?
> 
> This looks almost nice, but a few comments below.

Thanks for the review!


>>  $(obj)/$(bounds-file): kernel/bounds.s Kbuild
> 
> You are checking the resulting file content,
> so the dependency on "Kbuild" is not necessary.
> 
> Instead, you need to add "FORCE" so that this rule is always invoked.

Good point.


>>         $(Q)mkdir -p $(dir $@)
> 
> You can drop this line because filechk automatically creates the
> output directory.

Likewise.

Michal
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