linux-kernel - Re: feature-removal-schedule obsoletes

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Message-ID: <20061031214146.GB30739@wohnheim.fh-wedel.de>
Date:	Tue, 31 Oct 2006 22:41:46 +0100
From:	Jörn Engel <joern@...nheim.fh-wedel.de>
To:	Pierre Ossman <drzeus-list@...eus.cx>,
	Arnd Bergmann <arnd@...db.de>, Christoph Hellwig <hch@....de>,
	Jiri Slaby <jirislaby@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Adrian Bunk <bunk@...sta.de>,
	Dominik Brodowski <linux@...do.de>,
	Harald Welte <laforge@...filter.org>,
	Arjan van de Ven <arjan@...radead.org>,
	Jean Delvare <khali@...ux-fr.org>
Subject: Re: feature-removal-schedule obsoletes

On Tue, 31 October 2006 19:32:12 +0000, Russell King wrote:
> On Tue, Oct 31, 2006 at 04:57:56PM +0100, J?rn Engel wrote:
> > 
> > Why does the MMC block driver use a thread?  Is there a technical
> > reason for this or could it be done in original process context as
> > well, removing some code and useless cpu scheduler overhead?
> 
> As I understand it, there is no guarantee that a block drivers request
> function will be called in process context - it could be called in
> interrupt context.

Makes some sense.  I would still like to understand when a request
function is called from interrupt context, but if it is, the thread is
certainly necessary.

Jörn

-- 
This above all: to thine own self be true.
-- Shakespeare
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