linux-kernel - Re: [PATCH 0/3] cpuidle: updates related to tick_broadcast

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Message-ID: <1842725.60y5FMGEPh@vostro.rjw.lan>
Date:	Thu, 14 May 2015 02:16:11 +0200
From:	"Rafael J. Wysocki" <rjw@...ysocki.net>
To:	Kevin Hilman <khilman@...nel.org>
Cc:	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Preeti U Murthy <preeti@...ux.vnet.ibm.com>,
	peterz@...radead.org, tglx@...utronix.de,
	rafael.j.wysocki@...el.com, rlippert@...gle.com,
	linux-pm@...r.kernel.org, linus.walleij@...aro.org,
	linux-kernel@...r.kernel.org, mingo@...hat.com,
	sudeep.holla@....com, linuxppc-dev@...ts.ozlabs.org,
	Lina Iyer <lina.iyer@...aro.org>,
	Ulf Hansson <ulf.hansson@...aro.org>
Subject: Re: [PATCH 0/3] cpuidle: updates related to tick_broadcast_enter() failures

On Wednesday, May 13, 2015 03:59:55 PM Kevin Hilman wrote:
> "Rafael J. Wysocki" <rjw@...ysocki.net> writes:
> 
> [...]
> 
> > Second, quite honestly, I don't see a connection to genpd here.
> 
> The connection with genpd is because the *reason* the timer was
> shutdown/stopped is because it shares power with the CPU, which is why
> the timer stops when the CPU hits ceratin low power states.  IOW, it's
> in the same power domain as the CPU.

Well, what if you don't have genpd on that system?  Is the problem at hand not
relevant then magically?

Rafael

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