[PATCH] 2.6.3 Posix scheduling violation for !SCHED_OTHER

[Joe Korty]

Andrew,
 The following fixes a problem where a SCHED_FIFO task would on occasion
be moved to the end of its runqueue when returned to from a preemption.
Cause was do to some SCHED_OTHER code in schedule() which was being
run for tasks of every policy.

Regards,
Joe


--- 2.6.3/kernel/sched.c.orig	2004-02-17 22:59:10.000000000 -0500
+++ 2.6.3/kernel/sched.c	2004-03-23 18:34:19.000000000 -0500
@@ -1677,7 +1677,7 @@
 	queue = array->queue + idx;
 	next = list_entry(queue->next, task_t, run_list);
 
-	if (next->activated > 0) {
+	if (!rt_task(next) && next->activated > 0) {
 		unsigned long long delta = now - next->timestamp;
 
 		if (next->activated == 1)
-
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