linux-kernel - Re: [RFC PATCH 3/3] arm64: add a new config option KTEST

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Date:   Mon, 7 Jan 2019 17:59:11 +0000
From:   Mark Rutland <mark.rutland@....com>
To:     Mark Brown <broonie@...nel.org>
Cc:     Anders Roxell <anders.roxell@...aro.org>,
        linux-kernel@...r.kernel.org, catalin.marinas@....com,
        will.deacon@....com, arnd@...db.de, mingo@...hat.com,
        rostedt@...dmis.org, akpm@...ux-foundation.org
Subject: Re: [RFC PATCH 3/3] arm64: add a new config option KTEST_RUNNABLE

On Mon, Jan 07, 2019 at 05:55:31PM +0000, Mark Brown wrote:
> On Mon, Jan 07, 2019 at 02:43:57PM +0000, Mark Rutland wrote:
> 
> > Is it possible to use an allyesconfig rather than an allmodconfig? That
> > would leave all relevant options built-in.
> 
> The allyesconfig would make it more difficult to apply this approach to
> real hardware which is part of the goal here - the idea was to come up
> with a way of making runnable configurations which are likely to be
> usable with random userspace testsuites in order to avoid needing ever
> expanding combinations of builds.

Ok.

Is it somehow possible to fuse defconfig with an allmodconfig, with
defconfig's CONFIG_FOO=y taking precedence over allmodconfig's
CONFIG_FOO=m?

IIUC, that would give you the necessary platform bits, at least for
anything supported by defconfig. That would also happen to get
CONFIG_UNIX=y, too.

Thanks,
Mark.