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pkt_sched: sch_htb: Warn on too many events.

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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 */ int direct_qlen; /* max qlen of above */
long direct_pkts; long direct_pkts;
#define HTB_WARN_TOOMANYEVENTS 0x1
unsigned int warned; /* only one warning */
}; };
/* find class in global hash table using given handle */ /* 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); htb_add_to_wait_tree(q, cl, diff);
} }
/* too much load - let's continue on next jiffie (including above) */ /* 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; return q->now + 2 * PSCHED_TICKS_PER_SEC / HZ;
} }