linux-kernel - Re: [patch 61/66] timers: Convert to hotplug state machine

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Message-ID: <20160725204648.GA22830@linutronix.de>
Date:	Mon, 25 Jul 2016 22:46:48 +0200
From:	rcochran@...utronix.de
To:	Jon Hunter <jonathanh@...dia.com>
Cc:	Anna-Maria Gleixner <anna-maria@...utronix.de>,
	LKML <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>
Subject: Re: [patch 61/66] timers: Convert to hotplug state machine

On Mon, Jul 25, 2016 at 05:35:43PM +0200, rcochran@...utronix.de wrote:
> I see if I can find a tegra system to test with...

I tried the tip:smp/hotplug branch under kvm x86_64, and I didn't see
any problems with suspend or hibernate, even with CONFIG_PREEMPT_NONE.
I'll see if I can get my hands on a tegra system tomorrow.  Until
then, two questions:

1. The issue appears with suspend (echo mem > /sys/power/state), as
   opposed to hibernate, right?

2. CONFIG_PREEMPT_NONE is good, but CONFIG_PREEMPT is bad, right?

Thanks,
Richard