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Date:   Mon, 19 Sep 2022 17:00:52 +0200
From:   Peter Zijlstra <peterz@infradead.org>
To:     Frederic Weisbecker <frederic@kernel.org>
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Subject: Re: [PATCH v2 08/44] cpuidle,imx6: Push RCU-idle into driver
Message-ID: <YyiEJOJL5/Bq+9hK@hirez.programming.kicks-ass.net>
References: <20220919095939.761690562@infradead.org>
 <20220919101520.869531945@infradead.org>
 <20220919142123.GE58444@lothringen>
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On Mon, Sep 19, 2022 at 04:21:23PM +0200, Frederic Weisbecker wrote:
> On Mon, Sep 19, 2022 at 11:59:47AM +0200, Peter Zijlstra wrote:
> > Doing RCU-idle outside the driver, only to then temporarily enable it
> > again, at least twice, before going idle is daft.
> 
> Hmm, what ends up calling RCU_IDLE() here? Also what about
> cpu_do_idle()?

Both cpu_pm_enter() and cpu_cluster_pm_enter() use ct_irq_enter_irqson()
which is another way to spell RCU_NONIDLE().