Messages in this thread | | | Date | Tue, 9 Sep 2008 10:01:44 -0700 | From | Arjan van de Ven <> | Subject | Re: [PATCH 1/3] PCI: vpd handle longer delays in access |
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On Tue, 9 Sep 2008 09:55:48 -0700 Stephen Hemminger <shemminger@vyatta.com> wrote:
> On Mon, 8 Sep 2008 14:26:05 -0700 > Arjan van de Ven <arjan@infradead.org> wrote: > > > On Mon, 8 Sep 2008 14:08:24 -0700 > > Stephen Hemminger <shemminger@vyatta.com> wrote: > > > > > > > > What is a good way to say "i am polling for a while"? > > > > > > can you take a fixed time delay? > > > > or use cond_resched() > cond_resched sounds like the best suggestion. The problem is that > this code needs to deal with hardware that could be fast, or slow > depending on how the device is implemented.
one option is poll fast for <X jiffies> and then back off with sleeping delays
-- Arjan van de Ven Intel Open Source Technology Centre For development, discussion and tips for power savings, visit http://www.lesswatts.org
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