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Re: [PATCH 09/12] irq: implement IRQ expecting

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From: Tejun Heo
Subject: Re: [PATCH 09/12] irq: implement IRQ expecting
Date: Thursday, June 17, 2010 - 9:47 am

On 06/17/2010 06:02 PM, Arjan van de Ven wrote:

Eh... right, I was thinking about something else.  IRQ expect code
originally had a tick based duration estimator to determine poll
interval which I ripped out later for simpler stepped adjustments.
c-state would need higher frequency timing measurements than jiffies.


Hmmm... the thing is that there will be many cases which won't fit
irq_expect() model (why irq_watch() exists in the first place) and for
the time being libata is the only one providing that data.  Would the
data still be useful to determine which c-state to use?

Thanks.

-- 
tejun
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Messages in current thread:
[PATCH 09/12] irq: implement IRQ expecting, Tejun Heo, (Sun Jun 13, 8:31 am)
Re: [PATCH 09/12] irq: implement IRQ expecting, Jiri Slaby, (Mon Jun 14, 2:21 am)
Re: [PATCH 09/12] irq: implement IRQ expecting, Tejun Heo, (Mon Jun 14, 2:43 am)
Re: [PATCH 09/12] irq: implement IRQ expecting, Tejun Heo, (Mon Jun 14, 2:46 am)
Re: [PATCH 09/12] irq: implement IRQ expecting, Arjan van de Ven, (Wed Jun 16, 8:48 pm)
Re: [PATCH 09/12] irq: implement IRQ expecting, Tejun Heo, (Thu Jun 17, 1:18 am)
Re: [PATCH 09/12] irq: implement IRQ expecting, Thomas Gleixner, (Thu Jun 17, 4:12 am)
Re: [PATCH 09/12] irq: implement IRQ expecting, Tejun Heo, (Thu Jun 17, 4:23 am)
Re: [PATCH 09/12] irq: implement IRQ expecting, Alan Cox, (Thu Jun 17, 4:43 am)
Re: [PATCH 09/12] irq: implement IRQ expecting, Tejun Heo, (Thu Jun 17, 8:54 am)
Re: [PATCH 09/12] irq: implement IRQ expecting, Arjan van de Ven, (Thu Jun 17, 9:02 am)
Re: [PATCH 09/12] irq: implement IRQ expecting, Tejun Heo, (Thu Jun 17, 9:47 am)
Re: [PATCH 09/12] irq: implement IRQ expecting, Arjan van de Ven, (Thu Jun 17, 11:26 pm)
Re: [PATCH 09/12] irq: implement IRQ expecting, Tejun Heo, (Fri Jun 18, 2:23 am)
Re: [PATCH 09/12] irq: implement IRQ expecting, Thomas Gleixner, (Fri Jun 18, 2:45 am)
Re: [PATCH 09/12] irq: implement IRQ expecting, Andi Kleen, (Sat Jun 19, 1:35 am)
Re: [PATCH 09/12] irq: implement IRQ expecting, Tejun Heo, (Sat Jun 19, 1:42 am)
Re: [PATCH 09/12] irq: implement IRQ expecting, Andi Kleen, (Sat Jun 19, 2:00 am)
Re: [PATCH 09/12] irq: implement IRQ expecting, Tejun Heo, (Sat Jun 19, 2:03 am)
Re: [PATCH 09/12] irq: implement IRQ expecting, Arjan van de Ven, (Sat Jun 19, 7:54 am)
Re: [PATCH 09/12] irq: implement IRQ expecting, Andi Kleen, (Sat Jun 19, 12:49 pm)
Re: [PATCH 09/12] irq: implement IRQ expecting, Arjan van de Ven, (Sat Jun 19, 1:07 pm)