From: Peter Zijlstra <peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
To: balbi-l0cyMroinI0@public.gmane.org
Cc: Kevin Hilman
<khilman-1D3HCaltpLuhEniVeURVKkEOCMrvLtNR@public.gmane.org>,
Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>,
Shubhrajyoti Datta
<omaplinuxkernel-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Paul Walmsley <paul-DWxLp4Yu+b8AvxtiuMwx3w@public.gmane.org>,
linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Shubhrajyoti D <shubhrajyoti-l0cyMroinI0@public.gmane.org>,
Wolfram Sang <w.sang-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>,
Ben Dooks <ben-linux-elnMNo+KYs3YtjvyW6yDsg@public.gmane.org>,
linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
Russell King <rmk+kernel-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>
Subject: Re: RT throttling and suspend/resume (was Re: [PATCH] i2c: omap: revert "i2c: omap: switch to threaded IRQ support")
Date: Fri, 19 Oct 2012 16:00:27 +0200 [thread overview]
Message-ID: <1350655227.2768.11.camel@twins> (raw)
In-Reply-To: <20121018055136.GF11137-S8G//mZuvNWo5Im9Ml3/Zg@public.gmane.org>
On Thu, 2012-10-18 at 08:51 +0300, Felipe Balbi wrote:
> > So the primary question remains: is RT runtime supposed to include the
> > time spent suspended? I suspect not.
>
> you might be right there, though we need Thomas or Peter to answer :-s
re, sorry both tglx and I have been traveling, he still is, I'm trying
to play catch-up :-)
Anyway, yeah I'm somewhat surprised the clock is 'running' when the
machine isn't. From what I could gather, this is !x86 hardware, right?
x86 explicitly makes sure our clocks are 'stopped' during suspend, see
commit cd7240c0b900eb6d690ccee088a6c9b46dae815a.
Can you do something similar for ARM? A quick look at
arch/arm/kernel/sched_clock.c shows there's already suspend/resume
hooks, do they do the wrong thing?
next prev parent reply other threads:[~2012-10-19 14:00 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-15 1:51 [PATCH] i2c: omap: revert "i2c: omap: switch to threaded IRQ support" Paul Walmsley
2012-10-15 7:16 ` Felipe Balbi
[not found] ` <20121015071657.GA22818-S8G//mZuvNWo5Im9Ml3/Zg@public.gmane.org>
2012-10-15 15:05 ` Paul Walmsley
2012-10-16 12:58 ` Shubhrajyoti Datta
2012-10-16 13:33 ` Felipe Balbi
2012-10-16 13:37 ` Felipe Balbi
2012-10-16 21:39 ` RT throttling and suspend/resume (was Re: [PATCH] i2c: omap: revert "i2c: omap: switch to threaded IRQ support") Kevin Hilman
[not found] ` <87ipaanljt.fsf_-_-1D3HCaltpLuhEniVeURVKkEOCMrvLtNR@public.gmane.org>
2012-10-17 14:00 ` Felipe Balbi
2012-10-17 14:35 ` Felipe Balbi
2012-10-17 23:06 ` Kevin Hilman
2012-10-18 5:51 ` Felipe Balbi
[not found] ` <20121018055136.GF11137-S8G//mZuvNWo5Im9Ml3/Zg@public.gmane.org>
2012-10-19 14:00 ` Peter Zijlstra [this message]
2012-10-19 16:30 ` Felipe Balbi
2012-10-19 23:28 ` Kevin Hilman
2012-10-19 23:54 ` Kevin Hilman
2012-10-22 9:52 ` Peter Zijlstra
2012-10-22 16:47 ` Kevin Hilman
[not found] ` <87ehkqihdh.fsf-1D3HCaltpLuhEniVeURVKkEOCMrvLtNR@public.gmane.org>
2012-10-23 9:19 ` Russell King - ARM Linux
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