From fd051e1e8b2cae9a302c08ff6df76b98ea6fe58e Mon Sep 17 00:00:00 2001
From: Richard Braun <rbraun@sceen.net>
Date: Tue, 12 Mar 2013 21:06:46 +0100
Subject: kern/thread: fix balancer initialization and wakeup

---
 kern/thread.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'kern/thread.c')

diff --git a/kern/thread.c b/kern/thread.c
index 3acfa07d..03a41d70 100644
--- a/kern/thread.c
+++ b/kern/thread.c
@@ -743,6 +743,9 @@ thread_sched_ts_wakeup_balancer(struct thread_runq *runq)
 {
     unsigned long on_rq;
 
+    if (runq->balancer == NULL)
+        return;
+
     on_rq = atomic_cas(&runq->balancer->on_rq, 0, 1);
 
     if (on_rq)
@@ -1376,8 +1379,12 @@ thread_balancer(void *arg)
     runq = arg;
 
     for (;;) {
-        thread_sleep();
+        /*
+         * Start by balancing in case the first threads were not evenly
+         * dispatched.
+         */
         thread_sched_ts_balance(runq);
+        thread_sleep();
     }
 }
 
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