linux-kernel - Re: [PATCH v7 net-next 00/15] locking: Introduce nested-BH locking.

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Date: Tue, 18 Jun 2024 18:56:57 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc: linux-kernel@...r.kernel.org, netdev@...r.kernel.org, "David S. Miller"
 <davem@...emloft.net>, Daniel Bristot de Oliveira <bristot@...nel.org>,
 Boqun Feng <boqun.feng@...il.com>, Daniel Borkmann <daniel@...earbox.net>,
 Eric Dumazet <edumazet@...gle.com>, Frederic Weisbecker
 <frederic@...nel.org>, Ingo Molnar <mingo@...hat.com>, Paolo Abeni
 <pabeni@...hat.com>, Peter Zijlstra <peterz@...radead.org>, Thomas Gleixner
 <tglx@...utronix.de>, Waiman Long <longman@...hat.com>, Will Deacon
 <will@...nel.org>
Subject: Re: [PATCH v7 net-next 00/15] locking: Introduce nested-BH locking.

On Tue, 18 Jun 2024 09:13:16 +0200 Sebastian Andrzej Siewior wrote:
> Disabling bottoms halves acts as per-CPU BKL. On PREEMPT_RT code within
> local_bh_disable() section remains preemtible. As a result high prior
> tasks (or threaded interrupts) will be blocked by lower-prio task (or
> threaded interrupts) which are long running which includes softirq
> sections.

Trivial conflict on patch 8 but enough to make the build bots give up..
Please rebase?