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author | Hauke Mehrtens <hauke@hauke-m.de> | 2015-10-11 19:08:08 +0000 |
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committer | Hauke Mehrtens <hauke@hauke-m.de> | 2015-10-11 19:08:08 +0000 |
commit | b5842aed82e0c9101e99ec4bcf5959b931e98989 (patch) | |
tree | f9749eb8ce7d61f284cc4d91bac5aafd07de8344 /target/linux/generic/patches-4.3/657-qdisc_reduce_truesize.patch | |
parent | 3d1a65adb41db2758827fe81f36d92ab61618ea3 (diff) | |
download | master-31e0f0ae-b5842aed82e0c9101e99ec4bcf5959b931e98989.tar.gz master-31e0f0ae-b5842aed82e0c9101e99ec4bcf5959b931e98989.tar.bz2 master-31e0f0ae-b5842aed82e0c9101e99ec4bcf5959b931e98989.zip |
kernel: generic: add kernel 4.3
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
SVN-Revision: 47182
Diffstat (limited to 'target/linux/generic/patches-4.3/657-qdisc_reduce_truesize.patch')
-rw-r--r-- | target/linux/generic/patches-4.3/657-qdisc_reduce_truesize.patch | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/target/linux/generic/patches-4.3/657-qdisc_reduce_truesize.patch b/target/linux/generic/patches-4.3/657-qdisc_reduce_truesize.patch new file mode 100644 index 0000000000..d9f5b4fb63 --- /dev/null +++ b/target/linux/generic/patches-4.3/657-qdisc_reduce_truesize.patch @@ -0,0 +1,63 @@ +From bc9fec2f87d57bdbff30d296605e24504513f65c Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Dave=20T=C3=A4ht?= <dave.taht@bufferbloat.net> +Date: Mon, 17 Sep 2012 19:20:22 -0700 +Subject: [PATCH 4/7] net: add skb_reduce_truesize support to common qdiscs + +Reduce skb size under load when queues begin to fill on the +commont qdiscs. +--- + net/sched/sch_codel.c | 2 ++ + net/sched/sch_fifo.c | 12 ++++++++---- + net/sched/sch_fq_codel.c | 2 ++ + 3 files changed, 12 insertions(+), 4 deletions(-) + +--- a/net/sched/sch_codel.c ++++ b/net/sched/sch_codel.c +@@ -96,6 +96,8 @@ static int codel_qdisc_enqueue(struct sk + struct codel_sched_data *q; + + if (likely(qdisc_qlen(sch) < sch->limit)) { ++ if(qdisc_qlen(sch) > 128) ++ skb = skb_reduce_truesize(skb); + codel_set_enqueue_time(skb); + return qdisc_enqueue_tail(skb, sch); + } +--- a/net/sched/sch_fifo.c ++++ b/net/sched/sch_fifo.c +@@ -29,17 +29,21 @@ static int bfifo_enqueue(struct sk_buff + + static int pfifo_enqueue(struct sk_buff *skb, struct Qdisc *sch) + { +- if (likely(skb_queue_len(&sch->q) < sch->limit)) ++ if (likely(skb_queue_len(&sch->q) < sch->limit)) { ++ if (skb_queue_len(&sch->q) > 128) ++ skb = skb_reduce_truesize(skb); + return qdisc_enqueue_tail(skb, sch); +- ++ } + return qdisc_reshape_fail(skb, sch); + } + + static int pfifo_tail_enqueue(struct sk_buff *skb, struct Qdisc *sch) + { +- if (likely(skb_queue_len(&sch->q) < sch->limit)) ++ if (likely(skb_queue_len(&sch->q) < sch->limit)) { ++ if (skb_queue_len(&sch->q) > 128) ++ skb = skb_reduce_truesize(skb); + return qdisc_enqueue_tail(skb, sch); +- ++ } + /* queue full, remove one skb to fulfill the limit */ + __qdisc_queue_drop_head(sch, &sch->q); + qdisc_qstats_drop(sch); +--- a/net/sched/sch_fq_codel.c ++++ b/net/sched/sch_fq_codel.c +@@ -187,6 +187,8 @@ static int fq_codel_enqueue(struct sk_bu + return ret; + } + idx--; ++ if (sch->q.qlen > 128) ++ skb = skb_reduce_truesize(skb); + + codel_set_enqueue_time(skb); + flow = &q->flows[idx]; |