From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Adrian Hunter <adrian.hunter@intel.com>,
Guennadi Liakhovetski <g.liakhovetski@gmx.de>,
"linux-mmc@vger.kernel.org" <linux-mmc@vger.kernel.org>,
Linux PM list <linux-pm@vger.kernel.org>,
Chris Ball <cjb@laptop.org>,
Ulf Hansson <ulf.hansson@stericsson.com>,
Magnus Damm <magnus.damm@gmail.com>,
Linus Walleij <linus.walleij@linaro.org>,
Kevin Hilman <khilman@ti.com>
Subject: Re: [PATCH 0/3] MMC / PM: Make it possible to use PM QoS latency constraints
Date: Wed, 7 Mar 2012 19:38:03 +0000 [thread overview]
Message-ID: <20120307193803.GF3107@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <201203071005.54890.rjw@sisk.pl>
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On Wed, Mar 07, 2012 at 10:05:54AM +0100, Rafael J. Wysocki wrote:
> On Wednesday, March 07, 2012, Adrian Hunter wrote:
> > Maybe this needs to be re-thought. Userspace needs a simple, consistent and
> > understandable set of pm controls across the entire kernel, not piecemeal
> > across different subsystems.
> Well, that's my opinion too, but other people don't seem to agree with it.
Well, it depends on what the knob is. Some things definitely make sense
being generic (like the existing support for disabling runtime PM) but
people have suggested stuff like fiddling with IRQ latencies which really
seems far too detailed a thing to be twiddling from userspace and fairly
obscure in the system level impact so difficult for applications to take
advantage of usefully.
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next prev parent reply other threads:[~2012-03-07 19:38 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-04 0:01 [PATCH 0/3] MMC / PM: Make it possible to use PM QoS latency constraints Rafael J. Wysocki
2012-03-04 0:02 ` [PATCH 1/3] " Rafael J. Wysocki
2012-03-04 10:59 ` Linus Walleij
2012-03-04 19:47 ` Rafael J. Wysocki
2012-03-04 0:04 ` [PATCH 2/3] tmio_mmc / PM: Use PM QoS requests Rafael J. Wysocki
2012-03-04 0:04 ` [PATCH 3/3] sh_mmcif " Rafael J. Wysocki
2012-03-04 19:53 ` [PATCH 0/3] MMC / PM: Make it possible to use PM QoS latency constraints Rafael J. Wysocki
2012-03-04 19:55 ` [PATCH 1/3] MMC / PM: Make it possible to use PM QoS latency constraints, v2 Rafael J. Wysocki
2012-03-05 7:02 ` Linus Walleij
2012-03-06 9:34 ` Guennadi Liakhovetski
2012-03-06 21:06 ` Rafael J. Wysocki
2012-03-04 19:56 ` [PATCH 2/3] tmio_mmc / PM: Use PM QoS requests, v2 Rafael J. Wysocki
2012-03-06 9:40 ` Guennadi Liakhovetski
2012-03-06 21:07 ` Rafael J. Wysocki
2012-03-06 22:33 ` Guennadi Liakhovetski
2012-03-06 23:41 ` Rafael J. Wysocki
2012-03-04 19:56 ` [PATCH 3/3] sh_mmcif " Rafael J. Wysocki
2012-03-06 9:40 ` Guennadi Liakhovetski
2012-03-06 21:09 ` Rafael J. Wysocki
2012-03-07 23:27 ` [PATCH 0/3] PM: Make it possible to expose PM QoS latency constraints Rafael J. Wysocki
2012-03-07 23:28 ` [PATCH 1/3] PM / QoS: " Rafael J. Wysocki
2012-03-08 17:49 ` Kevin Hilman
2012-03-08 18:01 ` Mark Brown
2012-03-08 21:28 ` Rafael J. Wysocki
2012-03-08 21:23 ` Guennadi Liakhovetski
2012-03-08 21:27 ` Rafael J. Wysocki
2012-03-08 22:05 ` Kevin Hilman
2012-03-08 22:37 ` Rafael J. Wysocki
2012-03-08 23:18 ` Kevin Hilman
2012-03-08 23:30 ` Rafael J. Wysocki
2012-03-09 1:02 ` Kevin Hilman
2012-03-09 15:17 ` Alan Stern
2012-03-09 17:10 ` Kevin Hilman
2012-03-09 20:59 ` Rafael J. Wysocki
2012-03-09 21:34 ` Kevin Hilman
2012-03-07 23:29 ` [PATCH 2/3] tmio_mmc / PM: Use PM QoS latency constraint Rafael J. Wysocki
2012-03-08 8:02 ` Adrian Hunter
2012-03-08 21:29 ` Rafael J. Wysocki
2012-03-07 23:30 ` [PATCH 3/3] sh_mmcif " Rafael J. Wysocki
2012-03-08 11:03 ` Mark Brown
2012-03-08 21:29 ` Rafael J. Wysocki
2012-03-08 23:00 ` [Update][PATCH 0/3] PM: Make it possible to expose PM QoS latency constraints Rafael J. Wysocki
2012-03-08 23:01 ` [Update][PATCH 1/3] PM / QoS: " Rafael J. Wysocki
2012-03-12 19:32 ` Linus Walleij
2012-03-13 0:02 ` Rafael J. Wysocki
2012-03-08 23:03 ` [Update][PATCH 2/3] tmio_mmc / PM: Use PM QoS latency constraint Rafael J. Wysocki
2012-03-08 23:03 ` [Update][PATCH 3/3] sh_mmcif " Rafael J. Wysocki
2012-03-10 21:14 ` [Update][PATCH 0/3] PM: Make it possible to expose PM QoS latency constraints Rafael J. Wysocki
2012-03-06 10:30 ` [PATCH 0/3] MMC / PM: Make it possible to use " Adrian Hunter
2012-03-06 13:39 ` Guennadi Liakhovetski
2012-03-06 21:14 ` Rafael J. Wysocki
2012-03-07 8:31 ` Adrian Hunter
2012-03-07 9:05 ` Rafael J. Wysocki
2012-03-07 19:38 ` Mark Brown [this message]
2012-03-07 20:38 ` Kevin Hilman
2012-03-07 20:51 ` Rafael J. Wysocki
2012-03-07 20:54 ` Mark Brown
2012-03-07 21:31 ` Rafael J. Wysocki
2012-03-06 21:47 ` Rafael J. Wysocki
2012-03-07 7:06 ` Adrian Hunter
2012-03-07 9:05 ` Rafael J. Wysocki
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