Messages in this thread | | | Date | Wed, 9 Nov 2005 12:30:53 +0100 | From | Ingo Molnar <> | Subject | Re: MIPS PREEMPT_RT update.. |
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* john cooper <john.cooper@timesys.com> wrote:
> As a qualification, I am still chasing a few problems which I suspect > are related to the Malta patch for 2.6.14 rather than the mips-rt > patch. One appears to be a TLB handler problem in 2.6.14. The other > appears to be potentially excessive context switching, although I > haven't had the opportunity yet to fully investigate this issue. I > will follow up should resolution of these feed back into generic > mips-rt support.
FYI, i have released your big MIPS merge as part of 2.6.14-rt9. [please double-check i did not mis-merge any component]
wrt. your TLB problems: it might be related that TLB handling got simplified (and sped up) with the introduction of a generic, preemptible method to handle TLB-gathers. There's no tlb-simple.h anymore.
excessive context-switching might happen in some cases when we ping-pong short-held locks, and i'm certainly interested in a reproducer or analysis (or patch! :-).
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