Re: [PATCH net v2 2/3] net/sched: taprio: enforce a minimum interval for software schedules
From: Junjie Cao
Date: Mon Aug 31 2026 - 03:35:48 EST
On Mon, 24 Aug 2026 11:53:37 -0700, Jakub Kicinski <kuba@xxxxxxxxxx> wrote:
> Since the change carries a Fixes: tag it will be picked up for stable, so
> working 802.1Qbv configurations would stop loading after a stable update.
Dropped in v3. With 1/3 fixed, an interval below the expiry cost only
burns CPU on bounded back-to-back expiries, and syzbot already confirmed
1/3 alone on a fourth bucket (link in my 1/3 reply). I'll re-test the
other three the same way before v3.
> Was flooring the rearm interval at runtime in advance_sched() considered as
[...]
Yes, [1] in the cover letter. On top of 1/3 it would only cap the expiry
rate for schedules already below the service cost, with one more
constant to pick. Can do as a follow-up if you want that.