linux-kernel - Re: [PATCH] arm, kbuild: make "make install" not depend on vmlinux

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Message-ID: <CA+55aFx4G5gME3ByqE0Wr-_t2x_6WkP3Ta4k1z4jfW+PrcK0og@mail.gmail.com>
Date:	Wed, 17 Jul 2013 09:36:57 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Robert Richter <rric@...nel.org>
Cc:	Russell King <linux@....linux.org.uk>,
	Michal Marek <mmarek@...e.cz>,
	Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] arm, kbuild: make "make install" not depend on vmlinux

On Wed, Jul 17, 2013 at 9:05 AM, Robert Richter <rric@...nel.org> wrote:
>
> I narrowed this down. The problem is that zinstall on ARCH=arm has a
> dependency to vmlinux which does a prepare/prepare3 and finally does a
> forced rebuild of kernel.release even if it exists already.
>
> Rebuilding it removes kernel.release first and then recreates it. This
> might race with another parallel make job running depmod.
>
> So on arm and maybe other archs we need the same as for x86:
>
>  1648e4f8 x86, kbuild: make "make install" not depend on vmlinux
>
> The patch below fixes this for arm. It is build-tested in my
> environment, but please test it in others too if possible.

Ack. This looks like the right thing to do.

That said, I think for clarity you might perhaps want to make the
unrelated change of adding double quotes around $(KERNELRELEASE) a
separate patch. Not a big deal, but it took me a moment to say "why
did he do that" (in fact, I'm not sure KERNEL_RELEASE can actually
validly have spaces in it, but quoting it is certainly not wrong
either - but it might be unnecessary.

              Linus
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