linux-kernel - Re: Can I use yield in this way

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Message-ID: <20080626142454.5eddbc8b@lxorguk.ukuu.org.uk>
Date:	Thu, 26 Jun 2008 14:24:54 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	夏亮 <xiaiaxaxi@...u.edu.cn>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Can I use yield in this way

>        Can yield() be used as above. After I compile the kernel and  
> run again. Kernel is not working just as it meets deadlock. And if I  
> comment yield(), it runs ok. Could anyone help me?Thanks!

You cannot schedule within an interrupt (the interrupt handler cannot
yield) - you can force a reschedule however, and in theory you could
change the processor masks and trigger a reschedule to do what you want

Alan
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