Re: [PATCH] udev enhancements to use kernel event queue

From: Steven Dake <sdake@mvista.com>
To: Werner Almesberger <wa@almesberger.net>
Cc: Linus Torvalds <torvalds@transmeta.com>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] udev enhancements to use kernel event queue
Date: Thu, 19 Jun 2003 16:42:40 -0700	[thread overview]
Message-ID: <3EF24A70.4010608@mvista.com> (raw)
In-Reply-To: <20030619203230.E6248@almesberger.net>

Werner Almesberger wrote:

>Linus Torvalds wrote:
>  
>
>>[ Event demons ] encourage doing everything in one program,
>>keeping state in private memory, depending on ordering, and just
>>generally do bad things. 
>>    
>>
>
>Well, the ordering bit is the hairy part. As long as it doesn't
>matter if an event gets lost every once in a while, and in which
>order they get processed, things are fine as they are.
>
>But then it scares me to see people start to try to design some
>general serialization mechanism on top of /sbin/hotplug
>  
>
A serialization methodology can be built on /sbin/hotplug, but it has 
all of the problems that Linus previously talked about for a kernel 
event queue.  The difference is that the problem is moved to userland.

>- Werner
>  
>

-steve