pkt_sched: sch_htb: Warn on too many events.
Let's get some info on possible config problems. This patch brings
back an old warning, but is printed only once now.
With feedback from Patrick McHardy <kaber@trash.net>
Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c
index 77ff510..826f921 100644
--- a/net/sched/sch_htb.c
+++ b/net/sched/sch_htb.c
@@ -153,6 +153,9 @@
int direct_qlen; /* max qlen of above */
long direct_pkts;
+
+#define HTB_WARN_TOOMANYEVENTS 0x1
+ unsigned int warned; /* only one warning */
};
/* find class in global hash table using given handle */
@@ -685,6 +688,10 @@
htb_add_to_wait_tree(q, cl, diff);
}
/* too much load - let's continue on next jiffie (including above) */
+ if (!(q->warned & HTB_WARN_TOOMANYEVENTS)) {
+ printk(KERN_WARNING "htb: too many events!\n");
+ q->warned |= HTB_WARN_TOOMANYEVENTS;
+ }
return q->now + 2 * PSCHED_TICKS_PER_SEC / HZ;
}