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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>
This commit is contained in:
Jarek Poplawski 2009-02-01 01:13:05 -08:00 committed by David S. Miller
parent b00355db3f
commit e82181de5e
1 changed files with 7 additions and 0 deletions
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7
net/sched/sch_htb.c
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@ -153,6 +153,9 @@ struct htb_sched {
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 @@ static psched_time_t htb_do_events(struct htb_sched *q, int level,
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;
}