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net: sched: do not emit messages while holding spinlock 

move messages emitting out of sch_tree_lock to avoid holding
this lock too long.

Signed-off-by: Li RongQing <lirongqing@baidu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Li RongQing 2018-03-30 10:11:21 +08:00 committed by David S. Miller
parent ec1d8ccb07
commit da01ec4ee5
1 changed files with 7 additions and 4 deletions
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11
net/sched/sch_htb.c
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@ -1337,6 +1337,7 @@ static int htb_change_class(struct Qdisc *sch, u32 classid,
struct nlattr *tb[TCA_HTB_MAX + 1];
struct tc_htb_opt *hopt;
u64 rate64, ceil64;
int warn = 0;
/* extract all subattrs from opt attr */
if (!opt)
@ -1499,13 +1500,11 @@ static int htb_change_class(struct Qdisc *sch, u32 classid,
cl->quantum = min_t(u64, quantum, INT_MAX);
if (!hopt->quantum && cl->quantum < 1000) {
pr_warn("HTB: quantum of class %X is small. Consider r2q change.\n",
cl->common.classid);
warn = -1;
cl->quantum = 1000;
}
if (!hopt->quantum && cl->quantum > 200000) {
pr_warn("HTB: quantum of class %X is big. Consider r2q change.\n",
cl->common.classid);
warn = 1;
cl->quantum = 200000;
}
if (hopt->quantum)
@ -1519,6 +1518,10 @@ static int htb_change_class(struct Qdisc *sch, u32 classid,
sch_tree_unlock(sch);
if (warn)
pr_warn("HTB: quantum of class %X is %s. Consider r2q change.\n",
cl->common.classid, (warn == -1 ? "small" : "big"));
qdisc_class_hash_grow(sch, &q->clhash);
*arg = (unsigned long)cl;