linux-kernel - Re: [PATCH] Use tty

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Message-ID: <alpine.LFD.0.999.0707171243220.27353@woody.linux-foundation.org>
Date:	Tue, 17 Jul 2007 12:44:08 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Paul Fulghum <paulkf@...rogate.com>
cc:	James Simmons <jsimmons@...radead.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux console project <linuxconsole-dev@...ts.sourceforge.net>
Subject: Re: [PATCH] Use tty_schedule in VT code.



On Tue, 17 Jul 2007, Paul Fulghum wrote:
> 
> The scheduling is to move the processing out of interrupt context.
> The receive data is often extracted from the hardware
> at interrupt time and then queued for processing.

You misunderstand.

If the "delay" is zero, then why are you using "delayed" workqueues at 
all?

A delay of zero tends to be pointless. It's not a delay at all, and you 
could just use the regular NON-DELAYING workqueues.

		Linus
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