Messages in this thread | | | Date | Fri, 24 Jul 2015 09:56:27 -0700 | From | Jörn Engel <> | Subject | Re: [PATCH] mm: add resched points to remap_pmd_range/ioremap_pmd_range |
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On Fri, Jul 24, 2015 at 09:04:21AM +0200, Michal Hocko wrote: > On Thu 23-07-15 14:54:33, Spencer Baugh wrote: > > From: Joern Engel <joern@logfs.org> > > > > Mapping large memory spaces can be slow and prevent high-priority > > realtime threads from preempting lower-priority threads for a long time. > > How can a lower priority task block the high priority one? Do you have > preemption disabled?
Yes.
Jörn
-- If you're willing to restrict the flexibility of your approach, you can almost always do something better. -- John Carmack
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