diff options
| author | Jonas Köppeler <j.koeppeler@tu-berlin.de> | 2026-02-26 14:40:15 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-02-28 05:35:40 +0300 |
| commit | 0b3cd139be565b85f4a3579e376152b9def6256a (patch) | |
| tree | 1790d3e81fbddf909a46cc0e30e40972a0b28fa4 | |
| parent | 29252397bcc1e0a1f85e5c3bee59c325f5c26341 (diff) | |
| download | linux-0b3cd139be565b85f4a3579e376152b9def6256a.tar.xz | |
net/sched: sch_cake: avoid sync overhead when unlimited
Skip inter-instance sync when no rate limit is configured, as it serves
no purpose and only adds overhead.
Fixes: 1bddd758bac2 ("net/sched: sch_cake: share shaper state across sub-instances of cake_mq")
Signed-off-by: Jonas Köppeler <j.koeppeler@tu-berlin.de>
Acked-by: Toke Høiland-Jørgensen <toke@toke.dk>
Link: https://patch.msgid.link/20260226-cake-mq-skip-sync-bandwidth-unlimited-v1-1-01830bb4db87@tu-berlin.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | net/sched/sch_cake.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/sched/sch_cake.c b/net/sched/sch_cake.c index a01f14b1c216..b23fc7d9fafe 100644 --- a/net/sched/sch_cake.c +++ b/net/sched/sch_cake.c @@ -2013,7 +2013,8 @@ static struct sk_buff *cake_dequeue(struct Qdisc *sch) u64 delay; u32 len; - if (q->config->is_shared && now - q->last_checked_active >= q->config->sync_time) { + if (q->config->is_shared && q->rate_ns && + now - q->last_checked_active >= q->config->sync_time) { struct net_device *dev = qdisc_dev(sch); struct cake_sched_data *other_priv; u64 new_rate = q->config->rate_bps; |