[PATCH net-next v2 1/2] net/sched: skbedit: use per-cpu counters
From: Davide Caratti <hidden>
Date: 2018-07-11 14:09:28
Subsystem:
networking [general], tc subsystem, the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Jamal Hadi Salim, Jiri Pirko, Linus Torvalds
use per-CPU counters, instead of sharing a single set of stats with all cores: this removes the need of spinlocks when stats are read/updated. Signed-off-by: Davide Caratti <redacted> --- net/sched/act_skbedit.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/net/sched/act_skbedit.c b/net/sched/act_skbedit.c
index 86521a74ecdd..8651b5bd6b59 100644
--- a/net/sched/act_skbedit.c
+++ b/net/sched/act_skbedit.c@@ -38,10 +38,10 @@ static int tcf_skbedit(struct sk_buff *skb, const struct tc_action *a, { struct tcf_skbedit *d = to_skbedit(a); - spin_lock(&d->tcf_lock); tcf_lastuse_update(&d->tcf_tm); - bstats_update(&d->tcf_bstats, skb); + bstats_cpu_update(this_cpu_ptr(d->common.cpu_bstats), skb); + spin_lock(&d->tcf_lock); if (d->flags & SKBEDIT_F_PRIORITY) skb->priority = d->priority; if (d->flags & SKBEDIT_F_INHERITDSFIELD) {
@@ -77,8 +77,8 @@ static int tcf_skbedit(struct sk_buff *skb, const struct tc_action *a, return d->tcf_action; err: - d->tcf_qstats.drops++; spin_unlock(&d->tcf_lock); + qstats_drop_inc(this_cpu_ptr(d->common.cpu_qstats)); return TC_ACT_SHOT; }
@@ -169,7 +169,7 @@ static int tcf_skbedit_init(struct net *net, struct nlattr *nla, if (!exists) { ret = tcf_idr_create(tn, parm->index, est, a, - &act_skbedit_ops, bind, false); + &act_skbedit_ops, bind, true); if (ret) { tcf_idr_cleanup(tn, parm->index); return ret;
--
2.17.1