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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Boqun Feng <boqun@kernel.org>
Cc: Joel Fernandes <joelagnelf@nvidia.com>, paulmck@kernel.org,
	frederic@kernel.org, neeraj.iitr10@gmail.com, urezki@gmail.com,
	boqun.feng@gmail.com, rcu@vger.kernel.org,
	Kumar Kartikeya Dwivedi <memxor@gmail.com>,
	Tejun Heo <tj@kernel.org>
Subject: Re: Next-level bug in SRCU implementation of RCU Tasks Trace +
 PREEMPT_RT
Message-ID: <20260319090315.Ec_eXAg4@linutronix.de>
References: <20260318144305.xI6RDtzk@linutronix.de>
 <abrJ9C637V6keRvd@tardis.local>
 <214fb140-041d-4fd1-8694-658547209b84@paulmck-laptop>
 <3c4c5a29-24ea-492d-aeee-e0d9605b4183@nvidia.com>
 <absesPf-10awctq9@tardis.local>
 <absfZGD3en9TUA1U@tardis.local>
 <absj6rZbyLZY8PPz@tardis.local>
 <da4313b1-9ff5-46e9-b3b7-206dbcb72602@nvidia.com>
 <abs026TUV9oAg_Xy@tardis.local>
 <abtMhd_LVp3uL_pA@tardis.local>
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In-Reply-To: <abtMhd_LVp3uL_pA@tardis.local>

On 2026-03-18 18:08:21 [-0700], Boqun Feng wrote:
> @@ -1979,6 +1986,17 @@ static void process_srcu(struct work_struct *work)
>  	srcu_reschedule(ssp, curdelay);
>  }
>  
> +static void srcu_irq_work(struct irq_work *work)
> +{
> +	struct srcu_struct *ssp;
> +	struct srcu_usage *sup;
> +
> +	sup = container_of(work, struct srcu_usage, irq_work);
> +	ssp = sup->srcu_ssp;
> +
> +	queue_delayed_work(rcu_gp_wq, &sup->work, !!srcu_get_delay(ssp));
> +}
> +

Please just use the queue_delayed_work() with a delay >0.

Sebastian