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Date:   Tue, 11 Jul 2023 11:21:48 +0200
From:   Andrea Righi <andrea.righi@canonical.com>
To:     Tejun Heo <tj@kernel.org>
Cc:     torvalds@linux-foundation.org, mingo@redhat.com,
        peterz@infradead.org, juri.lelli@redhat.com,
        vincent.guittot@linaro.org, dietmar.eggemann@arm.com,
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        daniel@iogearbox.net, andrii@kernel.org, martin.lau@kernel.org,
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        dschatzberg@meta.com, dskarlat@cs.cmu.edu, riel@surriel.com,
        linux-kernel@vger.kernel.org, bpf@vger.kernel.org,
        kernel-team@meta.com
Subject: Re: [PATCH 12/34] sched_ext: Implement BPF extensible scheduler class
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References: <20230711011412.100319-1-tj@kernel.org>
 <20230711011412.100319-13-tj@kernel.org>
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On Mon, Jul 10, 2023 at 03:13:30PM -1000, Tejun Heo wrote:
...
> +static void free_dsq_irq_workfn(struct irq_work *irq_work)
> +{
> +	struct llist_node *to_free = llist_del_all(&dsqs_to_free);
> +	struct scx_dispatch_q *dsq, *tmp_dsq;
> +
> +	llist_for_each_entry_safe(dsq, tmp_dsq, to_free, free_node)
> +		kfree_rcu(dsq);

Maybe kfree_rcu(dsq, rcu)?

With 7e3f926bf453 ("rcu/kvfree: Eliminate k[v]free_rcu() single argument macro")
we don't allow single argument kfree_rcu() anymore and I don't think we
want to use kfree_rcu_mightsleep() here...

-Andrea