linux-kernel - Re: [PATCH 2/3] kthread: update the s390 lcs driver to use kthread

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Message-ID: <20060825144152.GB27364@infradead.org>
Date:	Fri, 25 Aug 2006 15:41:52 +0100
From:	Christoph Hellwig <hch@...radead.org>
To:	"Serge E. Hallyn" <serue@...ibm.com>
Cc:	lkml <linux-kernel@...r.kernel.org>, djbarrow@...ibm.com,
	fpavlic@...ibm.com, Martin Schwidefsky <schwidefsky@...ibm.com>
Subject: Re: [PATCH 2/3] kthread: update the s390 lcs driver to use kthread

On Thu, Aug 24, 2006 at 04:23:23PM -0500, Serge E. Hallyn wrote:
> Update the s390 Lan Channel Station Network Driver, which can be
> compiled as a module, to use kthread, rather than kernel_thread
> whose EXPORT_SYMBOL has been deprecated.

NACK.  Again a simple s/kernel_thread/kthread_run/ is not what we
need, you need to rething whats going on.  And the thread usage in
lcs is really bad :)

I'm not even sure why it creates all these short-lived threads,
but to fix this mess we might need a new function in kthread.c
that start a thread asynchronously so we can kill all the
workqueue mess in the various s390 net drivers and some other
places.

I'd suggest to start with getting a coherent description of what
those threads actually try to solve from the driver maintainer.
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