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Date:	Thu, 23 Oct 2014 06:51:07 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Michal Marek <mmarek@...e.cz>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Masahiro Yamada <yamada.m@...panasonic.com>,
	Peter Foley <pefoley2@...oley.com>,
	linux-kbuild@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH] kbuild: Fix output of make kernelrelease

On Thu, 23 Oct 2014 10:57:57 +0200
Michal Marek <mmarek@...e.cz> wrote:

> On 2014-10-23 03:11, Steven Rostedt wrote:
> > On Wed, 22 Oct 2014 21:44:08 +0200
> > Michal Marek <mmarek@...e.cz> wrote:
> > 
> >> Dne 22.10.2014 v 16:19 Steven Rostedt napsal(a):
> >>>
> >>> Commit 7ff525712acf "kbuild: fake the "Entering directory ..." message
> >>> more simply" changed the output of "make kernelrelease" such that the
> >>> kernel release version was not the last line printed. This broke various
> >>> tools that would find the kernel release with "make kernelrelease | tail -1".
> >>
> >> The cleaner and recommended (see recent make help) way is to use make -s:
> >>
> >> $ make O=build -s kernelrelease
> >> 3.18.0-rc1+
> >>
> >> no further processing is needed.
> > 
> > 
> > I don't mind changing my script with your patch. But this does break
> > other scripts of mine that I need to hunt down and change. My fear is
> > why do we need the '-s' when there may be other methods to preserve the
> > old functionality.
> 
> If you have scripts that only do x=$(make kernelrelease), then you
> should definitely fix them. You are right that the make kernelrelease |
> tail -1 trick had always been working until 7ff525712acf, so I can apply
> your patch.

Thanks, because that's what my scripts indeed do ;-)

> But please fix ktest.pl so that it's consistent with what
> the help text says.

Yeah, regardless I was planning on applying your patch as it needs to
handle bisects, and without it, ktest will fail to bisect after
7ff525712acf.

> Also, the Makefile patch should cover kernelversion
> and image_name as well.

OK, I'll make the update.

Thanks!

-- Steve
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