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From: David Woodhouse <dwmw2@infradead.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Randy Dunlap <randy.dunlap@oracle.com>,
	Ingo Molnar <mingo@elte.hu>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [patch] MTD: fix DOC2000/2001/2001PLUS build error
Date: Tue, 06 Feb 2007 23:11:55 +0000	[thread overview]
Message-ID: <1170803515.29759.1032.camel@pmac.infradead.org> (raw)
In-Reply-To: <Pine.LNX.4.64.0702061451560.8424@woody.linux-foundation.org>

On Tue, 2007-02-06 at 14:53 -0800, Linus Torvalds wrote:
> I don't think you've ever showed any such example.
> 
> And if you did, it would all boil down to *exactly* what 'select' does: 
> config options that get set automatically based on other choices.

That's one option which I don't think I've seen implemented.

The other possibility which comes to mind, and which I _have_ seen
implemented, is not to hide the disabled option but to _show_ it, and
represent its dependencies right there next to it somehow. 

Where I saw this done was actually in the Nemesis kernel configuration,
which was based on our old tcl xconfig tool. It actually worked quite
well. It's a _long_ time ago now, but IIRC it was in a cell below the
disabled option. It'd look something like (remember hte old xconfig?):

------------------------------------------------------------------------
|  USB Mass storage support                      |  o Y   o M   ✓ N    |
------------------------------------------------------------------------
|  depends on:  o SCSI   ✓ USB                                         |
------------------------------------------------------------------------

I'm sure I had a screenshot of it once. But it doesn't matter; you get
the idea -- our current tools would do it differently anyway. But they
_could_ do it.

> So care to give a real example? Start with USB automatically selecting 
> SCSI support without the user having to even know it uses SCSI. Tell me 
> how it's supposed to work sanely without 'select'.

Well one option, as you suggest, is just that if you go into the
graphical tool and enable USB_STORAGE, you get SCSI turned on
automatically. That's simple enough and the xconfig tool can do it quite
easily. It just needs to _show_ you the option, which isn't particularly
hard. But what I care about is that when you when you explicitly set
 # CONFIG_SCSI is not set
and run 'make oldconfig' it doesn't get turned back on again.

But as I said, I'm not entirely averse to having to do 'make
oldconfig-noselect' or something like that to preserve the old
behaviour. And then you can sprinkle 'select' wherever you like without
bothering those of us who object.

-- 
dwmw2


  reply	other threads:[~2007-02-06 23:12 UTC|newest]

Thread overview: 95+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-04 19:10 Super Kernel Sunday! Linus Torvalds
2007-02-04 19:40 ` Bauke Jan Douma
2007-02-04 21:00   ` Gene Heskett
2007-02-04 21:11   ` Kevin K
2007-02-04 19:56 ` Alessandro Suardi
2007-02-05  8:39 ` Jonathan Sambrook
2007-02-05  8:45 ` [patch] MTD: fix DOC2000/2001/2001PLUS build error Ingo Molnar
2007-02-05 13:06   ` Josh Boyer
2007-02-05 13:34   ` David Woodhouse
2007-02-05 15:56     ` Ingo Molnar
2007-02-05 16:08       ` Arjan van de Ven
2007-02-05 16:12       ` Russell King
2007-02-05 16:17         ` Ingo Molnar
2007-02-05 16:22       ` David Woodhouse
2007-02-05 16:26         ` Ingo Molnar
2007-02-05 16:31           ` Ingo Molnar
2007-02-05 16:58             ` Linus Torvalds
2007-02-05 17:05               ` Ingo Molnar
2007-02-05 17:08               ` Russell King
2007-02-05 21:15               ` Ingo Oeser
2007-02-06 13:32                 ` Gerhard Mack
2007-02-05 21:17               ` David Woodhouse
2007-02-05 21:28                 ` Linus Torvalds
2007-02-05 21:39                   ` David Woodhouse
2007-02-05 21:49                     ` Linus Torvalds
2007-02-05 21:53                       ` David Woodhouse
2007-02-05 22:21                         ` Linus Torvalds
2007-02-05 22:31                           ` Randy Dunlap
2007-02-05 23:09                             ` Linus Torvalds
2007-02-05 23:21                               ` David Woodhouse
2007-02-05 23:32                                 ` Linus Torvalds
2007-02-06  0:04                                   ` Mark Rustad
2007-02-06 15:55                                     ` Bill Davidsen
2007-02-06 16:20                                       ` Mark Rustad
2007-02-06  9:45                                   ` David Woodhouse
2007-02-06 15:51                                     ` Bill Davidsen
2007-02-06 16:53                                     ` Linus Torvalds
2007-02-06 22:38                                       ` David Woodhouse
2007-02-06 22:39                                         ` Randy Dunlap
2007-02-06 23:11                                           ` Linus Torvalds
2007-02-06 23:15                                             ` Linus Torvalds
2007-02-06 23:18                                             ` David Woodhouse
2007-02-06 23:49                                               ` Linus Torvalds
2007-02-06 22:53                                         ` Linus Torvalds
2007-02-06 23:11                                           ` David Woodhouse [this message]
2007-02-06 23:28                                             ` Linus Torvalds
2007-02-06 23:36                                               ` David Woodhouse
2007-02-06 23:41                                                 ` Randy Dunlap
2007-02-06 23:49                                                   ` David Woodhouse
2007-02-06 23:52                                                   ` Robert P. J. Day
2007-02-06 23:55                                                 ` Linus Torvalds
2007-02-07  0:03                                                   ` David Woodhouse
2007-02-07  0:21                                                     ` Linus Torvalds
2007-02-07  0:30                                                       ` Randy Dunlap
2007-02-07  0:37                                                       ` David Woodhouse
2007-02-07  2:09                                                         ` Linus Torvalds
2007-02-07 13:51                                                       ` Sunil Naidu
2007-02-06  1:09                                 ` Theodore Tso
2007-02-06  6:09                                   ` Matt Mackall
2007-02-06 16:04                                     ` Bill Davidsen
2007-02-06 16:41                                       ` Matt Mackall
2007-02-06 18:03                                         ` Bill Davidsen
2007-02-06  0:00                               ` Jeff Garzik
2007-02-06 13:52                               ` Jörn Engel
2007-02-06 15:16                               ` Mark Lord
2007-02-08  8:18                                 ` David Lang
2007-02-08  9:44                                 ` Jörn Engel
2007-02-06 15:41                           ` Bill Davidsen
2007-02-05 22:21                       ` Alan
2007-02-05 22:35                         ` Linus Torvalds
2007-02-05 21:50                 ` Alan
2007-02-05 21:41                   ` David Woodhouse
2007-02-06  5:46                 ` Matt Mackall
2007-02-06 15:34                   ` Paul Mundt
2007-02-06 22:39                   ` Haavard Skinnemoen
2007-02-06 22:51                     ` Linus Torvalds
2007-02-05 16:33           ` David Woodhouse
2007-02-05 16:46           ` Russell King
2007-02-05 16:52             ` Ingo Molnar
2007-02-05 17:04               ` Russell King
2007-02-05 16:32     ` Linus Torvalds
2007-02-05 16:50       ` Russell King
2007-02-05 16:52       ` David Woodhouse
2007-02-05 17:58 ` Super Kernel Sunday! Jan Engelhardt
2007-02-05 18:07   ` Kevin Fox
2007-02-06 19:02   ` Stephen Hemminger
2007-02-05 21:27 ` [2.6.20] Regression in dmfe driver Thomas Bächler
2007-02-06  9:38   ` Thierry Vignaud
2007-02-06 22:40     ` Thomas Bächler
2007-02-27 13:58 ` [PATA] Failed to set xfermode on LITE-ON LTR-48246S Philipp Matthias Hahn
2007-03-05  4:10   ` Tejun Heo
2007-03-05 10:38     ` Philipp Matthias Hahn
2007-03-05 15:46       ` Tejun Heo
2007-03-06  9:23         ` Philipp Matthias Hahn
2007-03-09 12:50           ` Tejun Heo

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