From: Con Kolivas <kernel@kolivas.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: linux <linux-kernel@vger.kernel.org>, Andrew Morton <akpm@osdl.org>
Subject: [PATCH] requeue at granularity intervals
Date: Wed, 03 Nov 2004 01:02:47 +1100 [thread overview]
Message-ID: <41879387.1080502@kolivas.org> (raw)
In-Reply-To: <20041102125834.GI15290@elte.hu>
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requeue at granularity intervals
[-- Attachment #1.2: sched-requeue_granularity.diff --]
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Change the granularity code to requeue tasks at their best priority
instead of changing priority while they're running. This keeps tasks at
their top interactive level during their whole timeslice.
Signed-off-by: Con Kolivas <kernel@kolivas.org>
Index: linux-2.6.10-rc1-mm2/kernel/sched.c
===================================================================
--- linux-2.6.10-rc1-mm2.orig/kernel/sched.c 2004-11-03 00:55:48.638171430 +1100
+++ linux-2.6.10-rc1-mm2/kernel/sched.c 2004-11-03 00:57:50.863711719 +1100
@@ -2476,10 +2476,8 @@ void scheduler_tick(void)
(p->time_slice >= TIMESLICE_GRANULARITY(p)) &&
(p->array == rq->active)) {
- dequeue_task(p, rq->active);
+ requeue_task(p, rq->active);
set_tsk_need_resched(p);
- p->prio = effective_prio(p);
- enqueue_task(p, rq->active);
}
}
out_unlock:
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next prev parent reply other threads:[~2004-11-02 14:24 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-11-02 4:07 [PATCH] add requeue task Con Kolivas
2004-11-02 12:35 ` Nick Piggin
2004-11-02 15:16 ` Nikita Danilov
2004-11-02 22:07 ` Nick Piggin
2004-11-03 8:12 ` Con Kolivas
2004-11-02 12:42 ` Ingo Molnar
2004-11-02 12:52 ` Con Kolivas
2004-11-02 12:58 ` Ingo Molnar
2004-11-02 14:02 ` Con Kolivas [this message]
2004-11-02 14:00 ` [PATCH] add requeue task redo Con Kolivas
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