linux-kernel - Re: [PATCH] Support kernel/hotplug sysctl variable when !CONFIG

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Message-Id: <20100607111145.1b98fdb4.randy.dunlap@oracle.com>
Date:	Mon, 7 Jun 2010 11:11:45 -0700
From:	Randy Dunlap <randy.dunlap@...cle.COM>
To:	Greg KH <gregkh@...e.de>
Cc:	Ian Abbott <abbotti@....co.uk>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Support kernel/hotplug sysctl variable when !CONFIG_NET

On Mon, 7 Jun 2010 10:43:50 -0700 Greg KH wrote:

> On Mon, Jun 07, 2010 at 12:57:12PM +0100, Ian Abbott wrote:
> > From: Ian Abbott <abbotti@....co.uk>
> > 
> > The kernel/hotplug sysctl variable (/proc/sys/kernel/hotplug file) was
> > made conditional on CONFIG_NET by commit
> > f743ca5e10f4145e0b3e6d11b9b46171e16af7ce (applied in 2.6.18) to fix
> > problems with undefined references in 2.6.16 when CONFIG_HOTPLUG=y &&
> > !CONFIG_NET, but this restriction is no longer needed.

Ack, builds for me on x86_64 when CONFIG_NET is not enabled.

> Why is this restriction no longer needed?  What changed?


commit cd3772e6898c6386f21d2958346d6dd57d4204f5
Author: Ming Lei <tom.leiming@...il.com>
Date:   Sun Nov 16 18:22:09 2008 +0800

    kernel/ksysfs.c:fix dependence on CONFIG_NET
    
    Access to uevent_seqnum and uevent_helper does not need to
    depend on CONFIG_NET, so remove it.
    
    Signed-off-by: Ming Lei <tom.leiming@...il.com>
    Cc: Kay Sievers <kay.sievers@...y.org>
    Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>


> > This patch makes the kernel/hotplug sysctl variable depend only on
> > CONFIG_HOTPLUG.
> 
> Why is this needed?  Are you really running without a network and still
> want to change the default /sbin/hotplug binary?
> 
> confused,


---
~Randy
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