Messages in this thread Patch in this message | | | Date | Fri, 25 Nov 2005 01:26:01 +0530 | From | Dinakar Guniguntala <> | Subject | More PI issues with -rt |
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Hi,
I found that PI boosted SCHED_OTHER tasks behave like they have SCHED_FIFO policy, while PI boosted SCHED_RR tasks continue to behave like they have SCHED_RR policy. This didn't seem right
Does something like the following patch make sense?
-Dinakar
Index: linux-2.6.14/kernel/sched.c =================================================================== --- linux-2.6.14.orig/kernel/sched.c 2005-11-25 01:24:06.000000000 +0530 +++ linux-2.6.14/kernel/sched.c 2005-11-25 01:24:26.000000000 +0530 @@ -2986,8 +2986,9 @@ * On PREEMPT_RT, boosted tasks will also get into this * branch and wont get their timeslice decreased until * they have done their work. + * Boosted SCHED_OTHER tasks round-robin as well */ - if ((p->policy == SCHED_RR) && !--p->time_slice) { + if ((p->policy != SCHED_FIFO) && !--p->time_slice) { p->time_slice = task_timeslice(p); p->first_time_slice = 0; set_tsk_need_resched(p); | |