Re: [PATCH v2 08/44] cpuidle,imx6: Push RCU-idle into driver
From: Peter Zijlstra <peterz@infradead.org>
Date: 2022-09-19 15:02:06
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linux-acpi, linux-alpha, linux-arch, linux-arm-msm, linux-clk, linux-m68k, linux-mips, linux-omap, linux-perf-users, linux-pm, linux-riscv, linux-s390, linux-sh, linux-tegra, linux-um, lkml, loongarch, sparclinux, virtualization
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:quoted
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().