Messages in this thread Patch in this message | | | Date | Mon, 7 Jun 2004 06:56:31 -0700 | From | William Lee Irwin III <> | Subject | Re: [PATCH] Staircase Scheduler v6.3 for 2.6.7-rc2 |
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On Mon, Jun 07, 2004 at 01:39:26AM +1000, Con Kolivas wrote: > This is an update of the scheduler policy mechanism rewrite using the > infrastructure of the current O(1) scheduler. Slight changes from the > original design require a detailed description. The change to the original > design has enabled all known corner cases to be abolished and cpu > distribution to be much better maintained. It has proven to be stable in my > testing and is ready for more widespread public testing now.
There is only one "array" per runqueue; the removed code should be at most a BUG_ON() or WARN_ON(); I opted to delete it altogether.
Index: kolivas-2.6.7-rc2/kernel/sched.c =================================================================== --- kolivas-2.6.7-rc2.orig/kernel/sched.c 2004-06-07 06:19:45.938605000 -0700 +++ kolivas-2.6.7-rc2/kernel/sched.c 2004-06-07 06:53:21.555185000 -0700 @@ -1789,13 +1789,7 @@ cpustat->user += user_ticks; cpustat->system += sys_ticks; - /* Task might have expired already, but not scheduled off yet */ - if (p->array != &rq->array) { - set_tsk_need_resched(p); - goto out; - } spin_lock(&rq->lock); - // SCHED_FIFO tasks never run out of timeslice. if (unlikely(p->policy == SCHED_FIFO)) goto out_unlock; - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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