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Date: Mon, 15 Jun 2026 15:56:19 +0200
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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Jakub Kicinski <kuba@kernel.org>
Cc: Vlad Poenaru <vlad.wing@gmail.com>, Thomas Gleixner <tglx@kernel.org>,
	netdev@vger.kernel.org, "David S . Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>, Paolo Abeni <pabeni@redhat.com>,
	Simon Horman <horms@kernel.org>, Breno Leitao <leitao@debian.org>,
	Clark Williams <clrkwllms@kernel.org>,
	Steven Rostedt <rostedt@goodmis.org>,
	linux-rt-devel@lists.linux.dev, linux-kernel@vger.kernel.org,
	stable@vger.kernel.org, Frederic Weisbecker <frederic@kernel.org>
Subject: Re: [PATCH net] netpoll: run NAPI poll in softirq context to avoid
 rq->lock self-deadlock
Message-ID: <20260615135619.OB8FjsCH@linutronix.de>
References: <20260610183621.3915271-1-vlad.wing@gmail.com>
 <20260611191114.5bc43a59@kernel.org>
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In-Reply-To: <20260611191114.5bc43a59@kernel.org>

On 2026-06-11 19:11:14 [-0700], Jakub Kicinski wrote:
> Please trim the pages of slop in the commit message and the comments.
>=20
> On Wed, 10 Jun 2026 11:36:21 -0700 Vlad Poenaru wrote:
> > @@ -194,11 +194,56 @@ void netpoll_poll_dev(struct net_device *dev)
> > +	local_bh_disable();
> > + 	poll_napi(dev);
> > +	_local_bh_enable();
>=20
> tglx, Sebastian, are you okay with using _local_bh_enable() to trick
> softirq into not waking ksoftirqd? The problematic path is:

The I planned to get to this today but I won't make it. I try to get to
this as soon I can=E2=80=A6

Sebastian