Ion
--
It is better to keep your mouth shut and be thought a fool,
than to open it and remove all doubt.
-------------------------------------
diff -u --recursive --new-file v2.1.113/linux/kernel/sched.c linux/kernel/sched.c
--- v2.1.113/linux/kernel/sched.c Tue Jul 28 14:21:10 1998
+++ linux/kernel/sched.c Mon Aug 3 11:27:32 1998
@@ -146,14 +146,21 @@
current->need_resched = 1;
}
-
+/*
+ * Careful!
+ *
+ * This has to add the process to the _beginning_ of the
+ * run-queue, not the end. See the comment about "This is
+ * subtle" in the scheduler proper..
+ */
static inline void add_to_runqueue(struct task_struct * p)
{
- nr_running++;
- reschedule_idle(p);
- (p->prev_run = init_task.prev_run)->next_run = p;
- p->next_run = &init_task;
- init_task.prev_run = p;
+ struct task_struct *next = init_task.next_run;
+
+ p->prev_run = &init_task;
+ init_task.next_run = p;
+ p->next_run = next;
+ next->prev_run = p;
}
static inline void del_from_runqueue(struct task_struct * p)
@@ -229,8 +236,11 @@
spin_lock_irqsave(&runqueue_lock, flags);
p->state = TASK_RUNNING;
- if (!p->next_run)
+ if (!p->next_run) {
add_to_runqueue(p);
+ reschedule_idle(p);
+ nr_running++;
+ }
spin_unlock_irqrestore(&runqueue_lock, flags);
}
-
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