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From: Sam Ravnborg <sam@ravnborg.org>
To: Jiri Kosina <jkosina@suse.cz>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
	Dave Jones <davej@redhat.com>,
	Greg Kroah-Hartman <greg@kroah.com>,
	Ubuntu Kernel Team <kernel-team@lists.ubuntu.com>,
	Debian Kernel Team <debian-kernel@lists.debian.org>,
	OpenSUSE Kernel Team <opensuse-kernel@opensuse.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [RFC] Simplifying kernel configuration for distro issues
Date: Fri, 20 Jul 2012 12:26:44 +0200	[thread overview]
Message-ID: <20120720102644.GA23636@merkur.ravnborg.org> (raw)
In-Reply-To: <alpine.LRH.2.00.1207201145310.16218@twin.jikos.cz>

> 
> But we'll first have to make 'select' to actually work, right? It 
> currently doesn't resolve the dependencies of the selected configs, so it 
> will just produce some very broken config.

We could restrict "select" to only select symbols with no dependencies,
or *exactly* the same dependencies as the symbol containing the select.

So we could have something like:

config FEDORA
	select WANT_TMPFS


config WANT_TMPFS
	bool

config TMPFS
	defbool y if WANT_TMPFS


This is a pattern used today in many places.
But fixing up all the current select XXX would not be trivial...
I have no idea how many of the select we have today that would fail
the above semantic restrictions - but I guess it is a lot.

We could also come up with something new like:

config FEDORA
	require TMPFS
	require EXT4 = m
	require EXT3 = y

This would set TMPS to y if TMPFS dependencies are met.
And EXT3 to y and EXT4 to m if their dependencies are met.

This should be more or less the same as setting the value to y/m
in the user interface, which is only possible if the value is visible.

	Sam

  reply	other threads:[~2012-07-20 10:26 UTC|newest]

Thread overview: 86+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-07-13 20:37 [RFC] Simplifying kernel configuration for distro issues Linus Torvalds
2012-07-13 20:54 ` Myklebust, Trond
2012-07-13 21:41   ` [opensuse-kernel] " richard -rw- weinberger
2012-07-14 10:37     ` Borislav Petkov
2012-07-14 12:12       ` Pekka Enberg
2012-07-14 12:43         ` Cyrill Gorcunov
2012-07-14 17:48           ` Borislav Petkov
2012-07-14 18:51             ` Cyrill Gorcunov
2012-07-14 19:51               ` david
2012-07-19 14:42             ` Steven Rostedt
2012-07-19 16:48               ` Borislav Petkov
2012-07-19 17:02                 ` Steven Rostedt
2012-07-19 17:34                   ` Borislav Petkov
2012-07-19 17:57                     ` Steven Rostedt
2012-07-19 18:09                       ` Borislav Petkov
2012-07-19 17:06                 ` Linus Torvalds
2012-07-19 17:53                   ` Borislav Petkov
2012-07-19 18:42                     ` Konrad Rzeszutek Wilk
2012-07-15 10:14         ` Borislav Petkov
2012-07-15 10:17           ` Pekka Enberg
2012-07-15 21:18             ` Borislav Petkov
2012-07-15 21:48               ` Cyrill Gorcunov
2012-07-15 22:09                 ` david
2012-07-15 22:22                   ` Cyrill Gorcunov
2012-07-15 23:06                     ` david
2012-07-16  8:24                   ` Borislav Petkov
2012-07-16 16:43                     ` david
2012-07-16 16:50                       ` Linus Torvalds
2012-07-16 19:26                         ` david
2012-07-16 20:56                           ` Linus Torvalds
2012-07-16 22:21                             ` david
2012-07-18  7:04                               ` Ingo Molnar
2012-07-18  8:42                                 ` david
2012-07-18  9:13                                   ` Ingo Molnar
2012-07-17  8:03                             ` Geert Uytterhoeven
2012-07-19 16:01                               ` Michal Marek
2012-07-16 17:01                     ` Alan Cox
2012-07-16 17:05                       ` david
2012-07-13 21:02 ` Dave Jones
2012-07-13 21:17   ` Linus Torvalds
2012-07-13 22:26     ` Josh Boyer
2012-07-19 15:26     ` Steven Rostedt
2012-07-19 15:43       ` Linus Torvalds
2012-07-19 16:12         ` Steven Rostedt
2012-07-19 15:45       ` Josh Boyer
2012-07-19 16:08         ` Steven Rostedt
2012-07-19 17:19           ` Josh Boyer
2012-07-19 17:30             ` Alan Cox
2012-07-19 17:38               ` Josh Boyer
2012-07-19 21:13               ` Ben Hutchings
2012-07-20  2:44                 ` david
2012-07-19 17:33             ` Steven Rostedt
2012-07-19 17:41               ` Alan Cox
2012-07-19 17:56               ` Josh Boyer
2012-07-19 18:13                 ` Steven Rostedt
2012-07-19 18:36                   ` Josh Boyer
2012-07-19 21:04                     ` david
2012-07-19 22:35                       ` Josh Boyer
2012-07-19 22:49                         ` Steven Rostedt
2012-07-21 20:47                 ` valdis.kletnieks
2012-07-19 18:20             ` Paul Bolle
2012-07-19 18:22               ` Josh Boyer
2012-07-19 18:49                 ` Geert Uytterhoeven
2012-07-19 18:55                   ` Paul Bolle
2012-07-19 21:30                 ` Geert Uytterhoeven
2012-07-13 21:29   ` Geert Uytterhoeven
2012-07-13 21:50   ` Paul Bolle
2012-07-13 21:55     ` Dave Jones
2012-07-13 22:11       ` Tony Luck
2012-07-13 22:20       ` Paul Bolle
2012-07-13 23:07       ` Frank Rowand
2012-07-13 21:06 ` Khalid Aziz
2012-07-13 21:17 ` Casey Schaufler
2012-07-13 21:20   ` Linus Torvalds
2012-07-13 22:13     ` david
2012-07-13 21:59 ` Hans de Bruin
2012-07-13 22:33 ` Jesper Juhl
2012-07-13 22:46   ` david
2012-07-14  9:44   ` Olivier Galibert
2012-07-14  4:18 ` Ben Hutchings
2012-07-14 12:35   ` Josh Boyer
2012-07-19  1:48 ` Steven Yong
2012-07-20  9:47 ` Jiri Kosina
2012-07-20 10:26   ` Sam Ravnborg [this message]
2012-07-18  9:55 Tom Gundersen
2012-07-22 20:10 ` David Greaves

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