Messages in this thread | | | Date | Sat, 11 Jun 2005 09:32:08 +0200 | From | Ingo Molnar <> | Subject | Re: [patch] Real-Time Preemption, -RT-2.6.12-rc6-V0.7.48-00 |
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* Michal Schmidt <xschmi00@stud.feec.vutbr.cz> wrote:
> Hi Ingo, > > Since the introduction of the delayed preemption feature in V0.7.47-20 > my KDE desktop has been jerky. The sound from artsd often skips. The > mouse pointer jumps when I compile anything the background and try to > browse the web with Firefox.
yeah.
> I think that try_to_wake_up is broken for the !sync case. We have: > > __activate_task(p, rq); > if (TASK_PREEMPTS_CURR(p, rq)) { > if (sync) > set_tsk_need_resched_delayed(rq->curr); > else > resched_task(rq->curr); > } > > Shouldn't we call the full activate_task(...) instead of > __activate_task(...) in the !sync case?
indeed.
> The attached patch fixes seems to fix it for me. It is against > V0.7.48-05.
thanks, applied - but this does not end all of the reschedule problems that the latest patches have. More on that later.
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