---

yaml --- r: 76135 b: refs/heads/master c: 318e089 h: refs/heads/master i: 76133: 5e467c3 76131: ab3c308 76127: 5c3c272 v: v3
git-mirror · Jan 25, 2008 · 998e08f · 998e08f
1 parent 95d3a00
commit 998e08f
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diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 2de0b4639f4b1b6bfe31f795e5855f041f177170
+refs/heads/master: 318e0893ce3f524ca045f9fd9dfd567c0a6f9446
diff --git a/trunk/kernel/sched_rt.c b/trunk/kernel/sched_rt.c
@@ -151,8 +151,27 @@ yield_task_rt(struct rq *rq)
 }
 
 #ifdef CONFIG_SMP
+static int find_lowest_rq(struct task_struct *task);
+
 static int select_task_rq_rt(struct task_struct *p, int sync)
 {
+	struct rq *rq = task_rq(p);
+
+	/*
+	 * If the task will not preempt the RQ, try to find a better RQ
+	 * before we even activate the task
+	 */
+	if ((p->prio >= rq->rt.highest_prio)
+	    && (p->nr_cpus_allowed > 1)) {
+		int cpu = find_lowest_rq(p);
+
+		return (cpu == -1) ? task_cpu(p) : cpu;
+	}
+
+	/*
+	 * Otherwise, just let it ride on the affined RQ and the
+	 * post-schedule router will push the preempted task away
+	 */
 	return task_cpu(p);
 }
 #endif /* CONFIG_SMP */