Messages in this thread | | | Date | Wed, 7 Nov 2007 20:44:26 -0600 | From | Matt Mackall <> | Subject | Re: is minimum udelay() not respected in preemptible SMP kernel-2.6.23? |
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On Thu, Nov 08, 2007 at 02:20:58AM +0100, Andi Kleen wrote: > > > But I think we'd be best off stashing a single bit somewhere and > > checking it at migrate time (relatively infrequent) rather than > > copying and zeroing out a potentially enormous affinity mask every > > time we disable migration (often, and in fast paths). Perhaps adding > > TASK_PINNED to the task state flags would do it? > > It would need to be a count to be able to nest it.
Ahh, right. Suppose that means fattening the task struct until someone comes up with something more clever.
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