linux-kernel - Re: [PATCH] macintosh/therm_pm72.c: Convert to kthread API.

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Date:	Mon, 23 Apr 2007 08:46:28 +1000
From:	Paul Mackerras <paulus@...ba.org>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	"<Andrew Morton" <akpm@...l.org>, containers@...ts.osdl.org,
	Oleg Nesterov <oleg@...sign.ru>, linux-kernel@...r.kernel.org,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Subject: Re: [PATCH] macintosh/therm_pm72.c: Convert to kthread API.

Christoph Hellwig writes:

> Why is this driver using a thread at all?  It's only doing a bunch
> of rather short-lived things in the thread.

It's doing i2c reads and writes, which block, and are actually quite
slow.

Paul.
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