Messages in this thread | | | Subject | Re: [PATCH] Avoid moving tasks when a schedule can be made. | From | Steven Rostedt <> | Date | Wed, 01 Feb 2006 09:32:17 -0500 |
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On Wed, 2006-02-01 at 15:22 +0100, Ingo Molnar wrote: > * Nick Piggin <nickpiggin@yahoo.com.au> wrote: > > > >rwsems/rwlocks are not an issue in -rt because they have different > > >semantics there - and thus readers cannot amass. I do think rwsems and > > >rwlocks have pretty nasty characteristics [non-latency ones] for the > > >mainline kernel's use too, but that's not being argued here ;) > > > > But all I'm saying is that while there are equivalent magnitudes of > > interrupts off regions in mainline, there is little point introducing > > a hack like this to "solve" one of them. > > nobody is arguing to have this hack included. Hacks are to be introduced > into the scheduler only over my cold dead body ;-) Steve only sent this > as an RFC thing, to raise the issue.
I'll confirm this. Even in my submission, I stated that this was probably wrong, and wanted comments (thank you btw for commenting :). I just wanted to show where the problem was, and that the problem went away with the "hack".
-- Steve
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