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From: "Mark Chambers" <markc@mail.com>
To: "zjznliang" <zjznliang_popo@163.com>,
	"linuxppc-embedded" <linuxppc-embedded@ozlabs.org>
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Date: Tue, 15 Nov 2005 07:40:55 -0500
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Subject: Re: interrupts limit??
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> Hi ,linuxppc-embedded ŁĄ
>
>   I have done the interrupt request by request_irq() on the Linux 2.4.25
,when typing the 'cat /proc/interrupts', I can see the information as follow
:
>
> /proc # cat interrupts
>            CPU0
>   2:       3420   8xx SIU   Edge      wbga_interrupt
>   5:          0   8xx SIU   Edge      CPM cascade
>  15:          0   8xx SIU   Edge      tbint
>  16:          0   CPM       Edge      error
>  20:        801   CPM       Edge      SMC1
>
> and I can see the number of wbga_interrupt is increasing. But a few
minutes later ,the number is locked at 128000 as follow:
>
> /proc # cat interrupts
>            CPU0
>   2:     128000   8xx SIU   Edge      wbga_interrupt
>   5:          0   8xx SIU   Edge      CPM cascade
>  15:          0   8xx SIU   Edge      tbint
>  16:          0   CPM       Edge      error
>  20:        833   CPM       Edge      SMC1
>
> and there is no wbga_interrupt any more....what's the matter with the
interrupt?why is 128000???
>
>

The problem is not /proc/interrupts, if that's what you're thinking.  The
number can go much
higher.  Believe what it's telling you:  Your driver has a problem and has
stopped generating
interrupts.

Mark Chambers