Messages in this thread | | | From | Rusty Russell <> | Subject | Re: [PATCH 0/13] Turn hrtimers into a range capable timer | Date | Fri, 12 Sep 2008 13:39:49 +1000 |
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On Tuesday 02 September 2008 09:03:43 Arjan van de Ven wrote: > This series is a follow-on the the nanosecond select/poll series. > > The goal of this series is to introduce the capability into hrtimers to > deal with a "range" rather than a specific point in time. > (Several people discussed this recently, but we've been toying with the > concept for a while)
Hi Arjen, sorry for not replying sooner.
I had half a patch to create a new "timer layer to rule them all" called ktimers, which took an explicit "slop" value. Slop is the "how long before its worth waking the machine for this?" value, with friendly SLOP_USECS, SLOP_SECONDS, SLOP_DAYS etc defines. Implemented in terms of normal and hr timers, which get deprecated over time.
Heuristics work for a while, but IMHO eventually this is going to have to be plumbed through to userspace.
Cheers, Rusty.
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