From: Paul Mundt <lethal@linux-sh.org>
To: Daniel Walker <dwalker@fifo99.com>
Cc: Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
Linus Walleij <linus.ml.walleij@gmail.com>,
Ingo Molnar <mingo@elte.hu>, Andrew Victor <linux@maxim.org.za>,
Haavard Skinnemoen <hskinnemoen@atmel.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, linux-sh@vger.kernel.org,
linux-arm-kernel@lists.arm.linux.org.uk,
John Stultz <johnstul@linux.vnet.ibm.com>
Subject: Re: [PATCH] sched: Support current clocksource handling in fallback sched_clock().
Date: Thu, 28 May 2009 23:37:16 +0000 [thread overview]
Message-ID: <20090528233716.GB1122@linux-sh.org> (raw)
In-Reply-To: <1243539663.28705.99.camel@desktop>
On Thu, May 28, 2009 at 12:41:03PM -0700, Daniel Walker wrote:
> On Fri, 2009-05-29 at 04:34 +0900, Paul Mundt wrote:
> > > I'm still a little confused how kernel modules fit in here.. Are you
> > > saying a user would unload some certain driver which has a pin locked
> > > down and prevents the clocksource from working. Then the user would load
> > > the clocksource module which would now function, and that all would have
> > > to happen in order to enter a certain power state?
> > >
> > Yes.
>
> I'm assuming this isn't a low power state, this would be something more
> like suspend or hibernate right?
>
Right, with the amount of hassle involved, it makes no sense for run-time
PM at least. So the suspend/hibernate use cases are mostly where it makes
sense.
WARNING: multiple messages have this Message-ID (diff)
From: Paul Mundt <lethal@linux-sh.org>
To: Daniel Walker <dwalker@fifo99.com>
Cc: Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
Linus Walleij <linus.ml.walleij@gmail.com>,
Ingo Molnar <mingo@elte.hu>, Andrew Victor <linux@maxim.org.za>,
Haavard Skinnemoen <hskinnemoen@atmel.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, linux-sh@vger.kernel.org,
linux-arm-kernel@lists.arm.linux.org.uk,
John Stultz <johnstul@linux.vnet.ibm.com>
Subject: Re: [PATCH] sched: Support current clocksource handling in fallback sched_clock().
Date: Fri, 29 May 2009 08:37:16 +0900 [thread overview]
Message-ID: <20090528233716.GB1122@linux-sh.org> (raw)
In-Reply-To: <1243539663.28705.99.camel@desktop>
On Thu, May 28, 2009 at 12:41:03PM -0700, Daniel Walker wrote:
> On Fri, 2009-05-29 at 04:34 +0900, Paul Mundt wrote:
> > > I'm still a little confused how kernel modules fit in here.. Are you
> > > saying a user would unload some certain driver which has a pin locked
> > > down and prevents the clocksource from working. Then the user would load
> > > the clocksource module which would now function, and that all would have
> > > to happen in order to enter a certain power state?
> > >
> > Yes.
>
> I'm assuming this isn't a low power state, this would be something more
> like suspend or hibernate right?
>
Right, with the amount of hassle involved, it makes no sense for run-time
PM at least. So the suspend/hibernate use cases are mostly where it makes
sense.
next prev parent reply other threads:[~2009-05-28 23:37 UTC|newest]
Thread overview: 114+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-26 6:15 [PATCH] sched: Support current clocksource handling in fallback sched_clock() Paul Mundt
2009-05-26 6:15 ` Paul Mundt
2009-05-26 14:31 ` [PATCH] sched: Support current clocksource handling in fallback Linus Walleij
2009-05-26 14:31 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Linus Walleij
2009-05-26 14:38 ` [PATCH] sched: Support current clocksource handling in Peter Zijlstra
2009-05-26 14:38 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Peter Zijlstra
2009-05-26 20:17 ` [PATCH] sched: Support current clocksource handling in fallback Thomas Gleixner
2009-05-26 20:17 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Thomas Gleixner
2009-05-26 23:08 ` Paul Mundt
2009-05-26 23:08 ` Paul Mundt
2009-05-26 23:13 ` Paul Mundt
2009-05-26 23:13 ` Paul Mundt
2009-05-26 23:25 ` [PATCH] sched: Support current clocksource handling in john stultz
2009-05-26 23:25 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() john stultz
2009-05-26 23:44 ` Paul Mundt
2009-05-26 23:44 ` Paul Mundt
2009-05-27 0:18 ` [PATCH] sched: Support current clocksource handling in fallback Thomas Gleixner
2009-05-27 0:18 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Thomas Gleixner
2009-05-27 0:22 ` [PATCH] sched: Support current clocksource handling in john stultz
2009-05-27 0:22 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() john stultz
2009-05-27 0:26 ` Paul Mundt
2009-05-27 0:26 ` Paul Mundt
2009-05-27 1:09 ` [PATCH] sched: Support current clocksource handling in john stultz
2009-05-27 1:09 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() john stultz
2009-05-27 0:27 ` [PATCH] sched: Support current clocksource handling in fallback Thomas Gleixner
2009-05-27 0:27 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Thomas Gleixner
2009-05-26 23:49 ` [PATCH] sched: Support current clocksource handling in fallback Thomas Gleixner
2009-05-26 23:49 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Thomas Gleixner
2009-05-27 0:15 ` Paul Mundt
2009-05-27 0:15 ` Paul Mundt
2009-05-27 16:25 ` [PATCH] sched: Support current clocksource handling in Daniel Walker
2009-05-27 16:25 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Daniel Walker
2009-05-28 8:44 ` Paul Mundt
2009-05-28 8:44 ` Paul Mundt
2009-05-28 9:19 ` Paul Mundt
2009-05-28 9:19 ` Paul Mundt
2009-05-28 9:34 ` [PATCH] sched: Support current clocksource handling in Peter Zijlstra
2009-05-28 9:34 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Peter Zijlstra
2009-05-28 11:09 ` Paul Mundt
2009-05-28 11:09 ` Paul Mundt
2009-05-28 12:22 ` [PATCH] sched: Support current clocksource handling in fallback Thomas Gleixner
2009-05-28 12:22 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Thomas Gleixner
2009-05-28 12:40 ` [PATCH] sched: Support current clocksource handling in Peter Zijlstra
2009-05-28 12:40 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Peter Zijlstra
2009-05-28 12:42 ` Paul Mundt
2009-05-28 12:42 ` Paul Mundt
2009-05-28 12:53 ` [PATCH] sched: Support current clocksource handling in fallback Thomas Gleixner
2009-05-28 12:53 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Thomas Gleixner
2009-05-28 12:59 ` [PATCH] sched: Support current clocksource handling in Peter Zijlstra
2009-05-28 12:59 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Peter Zijlstra
2009-05-28 13:20 ` Paul Mundt
2009-05-28 13:20 ` Paul Mundt
2009-05-28 16:13 ` [PATCH] sched: Support current clocksource handling in Daniel Walker
2009-05-28 16:13 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Daniel Walker
2009-05-28 16:32 ` [PATCH] sched: Support current clocksource handling in Peter Zijlstra
2009-05-28 16:32 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Peter Zijlstra
2009-05-28 16:40 ` Paul Mundt
2009-05-28 16:40 ` Paul Mundt
2009-05-28 16:52 ` [PATCH] sched: Support current clocksource handling in Daniel Walker
2009-05-28 16:52 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Daniel Walker
2009-05-28 16:58 ` Paul Mundt
2009-05-28 16:58 ` Paul Mundt
2009-05-28 17:38 ` [PATCH] sched: Support current clocksource handling in Daniel Walker
2009-05-28 17:38 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Daniel Walker
2009-05-28 17:46 ` [PATCH] sched: Support current clocksource handling in fallback Thomas Gleixner
2009-05-28 17:46 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Thomas Gleixner
2009-05-28 17:53 ` Paul Mundt
2009-05-28 17:53 ` Paul Mundt
2009-05-28 18:10 ` [PATCH] sched: Support current clocksource handling in Daniel Walker
2009-05-28 18:10 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Daniel Walker
2009-05-28 18:27 ` Paul Mundt
2009-05-28 18:27 ` Paul Mundt
2009-05-28 19:04 ` [PATCH] sched: Support current clocksource handling in Daniel Walker
2009-05-28 19:04 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Daniel Walker
2009-05-28 19:34 ` Paul Mundt
2009-05-28 19:34 ` Paul Mundt
2009-05-28 19:41 ` [PATCH] sched: Support current clocksource handling in Daniel Walker
2009-05-28 19:41 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Daniel Walker
2009-05-28 23:37 ` Paul Mundt [this message]
2009-05-28 23:37 ` Paul Mundt
2009-05-28 18:44 ` [PATCH] sched: Support current clocksource handling in fallback Thomas Gleixner
2009-05-28 18:44 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Thomas Gleixner
2009-05-28 17:00 ` [PATCH] sched: Support current clocksource handling in fallback Thomas Gleixner
2009-05-28 17:00 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Thomas Gleixner
2009-05-28 17:07 ` [PATCH] sched: Support current clocksource handling in John Stultz
2009-05-28 17:07 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() John Stultz
2009-05-26 20:23 ` [PATCH] sched: Support current clocksource handling in john stultz
2009-05-26 20:23 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() john stultz
2009-05-26 20:30 ` [PATCH] sched: Support current clocksource handling in Peter Zijlstra
2009-05-26 20:30 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Peter Zijlstra
2009-05-26 20:40 ` [PATCH] sched: Support current clocksource handling in john stultz
2009-05-26 20:40 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() john stultz
2009-05-26 20:55 ` [PATCH] sched: Support current clocksource handling in Peter Zijlstra
2009-05-26 20:55 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Peter Zijlstra
2009-05-26 23:00 ` [PATCH] sched: Support current clocksource handling in john stultz
2009-05-26 23:00 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() john stultz
2009-05-26 23:24 ` [PATCH] sched: Support current clocksource handling in fallback Mangalampalli, JayantX
2009-05-26 23:24 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Mangalampalli, JayantX
2009-05-27 0:04 ` [PATCH] sched: Support current clocksource handling in fallback Thomas Gleixner
2009-05-27 0:04 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Thomas Gleixner
2009-05-26 23:39 ` [PATCH] sched: Support current clocksource handling in fallback Thomas Gleixner
2009-05-26 23:39 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Thomas Gleixner
2009-05-27 6:58 ` [PATCH] sched: Support current clocksource handling in Peter Zijlstra
2009-05-27 6:58 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Peter Zijlstra
2009-05-26 20:39 ` [PATCH] sched: Support current clocksource handling in fallback Thomas Gleixner
2009-05-26 20:39 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Thomas Gleixner
2009-05-26 14:43 ` Paul Mundt
2009-05-26 14:43 ` Paul Mundt
2009-05-26 14:50 ` [PATCH] sched: Support current clocksource handling in Peter Zijlstra
2009-05-26 14:50 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Peter Zijlstra
2009-05-26 14:53 ` Paul Mundt
2009-05-26 14:53 ` Paul Mundt
2009-05-26 15:02 ` [PATCH] sched: Support current clocksource handling in fallback Matthieu CASTET
2009-05-26 15:02 ` [PATCH] sched: Support current clocksource handling in fallback sched_clock() Matthieu CASTET
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