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Message-ID: <1394244064.20149.51.camel@edumazet-glaptop2.roam.corp.google.com> Date: Fri, 07 Mar 2014 18:01:04 -0800 From: Eric Dumazet <eric.dumazet@...il.com> To: David Miller <davem@...emloft.net> Cc: netdev <netdev@...r.kernel.org> Subject: [PATCH net-next] pkt_sched: add cond_resched() to class and qdisc dump From: Eric Dumazet <edumazet@...gle.com> We have seen delays of more than 50ms in class or qdisc dumps, in case device is under high TX stress. Add cond_resched() to give a chance to higher prio tasks to get cpu. Signed-off-by: Eric Dumazet <edumazet@...gle.com> --- Google-Bug-Id: 13317737 net/sched/sch_api.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c index 1313145e3b86..15974e38cada 100644 --- a/net/sched/sch_api.c +++ b/net/sched/sch_api.c @@ -1303,6 +1303,7 @@ static int tc_fill_qdisc(struct sk_buff *skb, struct Qdisc *q, u32 clid, struct gnet_dump d; struct qdisc_size_table *stab; + cond_resched(); nlh = nlmsg_put(skb, portid, seq, event, sizeof(*tcm), flags); if (!nlh) goto out_nlmsg_trim; @@ -1617,6 +1618,7 @@ static int tc_fill_tclass(struct sk_buff *skb, struct Qdisc *q, struct gnet_dump d; const struct Qdisc_class_ops *cl_ops = q->ops->cl_ops; + cond_resched(); nlh = nlmsg_put(skb, portid, seq, event, sizeof(*tcm), flags); if (!nlh) goto out_nlmsg_trim; -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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