From: mark gross <markgross@thegnar.org>
To: Antti P Miettinen <amiettinen@nvidia.com>
Cc: linux-pm@lists.linux-foundation.org
Subject: Re: [PATCH 0/6] RFC: CPU frequency min/max as PM QoS params
Date: Fri, 6 Jan 2012 07:18:18 -0800 [thread overview]
Message-ID: <20120106151818.GC12530@mgross-G62> (raw)
In-Reply-To: <1325810186-28986-1-git-send-email-amiettinen@nvidia.com>
On Fri, Jan 06, 2012 at 02:36:20AM +0200, Antti P Miettinen wrote:
> The inspiration for this patch series is the N9 CPU frequency boost
> upon input events:
>
> http://www.spinics.net/lists/cpufreq/msg00667.html
>
> and the related changes in git://codeaurora.org/kernel/msm.git tree.
> Those patches modify the ondemand cpufreq governor. This patch series
> adds minimum and maximum CPU frequency as PM QoS parameters and
> modifies the cpufreq core to enforce the PM QoS limits. There is also
> an example module for boosting the frequency upon input events.
>
> I've been testing these changes against Ubuntu 3.2 kernel on a Dell
> E6420 with the ACPI cpufreq driver. The patches are against
> linux-next/master, compile tested against it.
wow, isn't this is timely :)
I was working on the same thing. I used different names. FWIW our
issue is motivated by some graphics workloads that get starved for
frames because the cpufreq governor sees nothing by < 50% CPU use so it
pushes the cpu into a low P-state which doesn't have throughput to feed
the next frame of OpenGL data before the next frame time. This is
pretty common for some graphics workloads.
I look forward to reviewing you path set!
--mark
> --Antti
>
> Alex Frid (1):
> PM QoS: Simplify PM QoS expansion/merge
>
> Antti P Miettinen (5):
> PM QoS: Add CPU frequency min/max as PM QoS params
> cpufreq: Export user_policy min/max
> cpufreq: Preserve sysfs min/max request
> cpufreq: Enforce PM QoS min/max limits
> input: CPU frequency booster
>
> drivers/cpufreq/cpufreq.c | 57 +++++++++++++-
> drivers/input/Kconfig | 9 ++
> drivers/input/Makefile | 1 +
> drivers/input/input-cfboost.c | 174 +++++++++++++++++++++++++++++++++++++++++
> include/linux/pm_qos.h | 19 ++++-
> kernel/power/qos.c | 55 ++++++++++----
> 6 files changed, 293 insertions(+), 22 deletions(-)
> create mode 100644 drivers/input/input-cfboost.c
>
> --
> 1.7.4.1
>
> _______________________________________________
> linux-pm mailing list
> linux-pm@lists.linux-foundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/linux-pm
next prev parent reply other threads:[~2012-01-06 15:18 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-06 0:36 [PATCH 0/6] RFC: CPU frequency min/max as PM QoS params Antti P Miettinen
2012-01-06 0:36 ` [PATCH 1/6] PM QoS: Simplify PM QoS expansion/merge Antti P Miettinen
2012-01-06 15:24 ` mark gross
2012-01-08 23:03 ` Rafael J. Wysocki
2012-01-06 0:36 ` [PATCH 2/6] PM QoS: Add CPU frequency min/max as PM QoS params Antti P Miettinen
2012-01-06 15:30 ` mark gross
2012-01-06 19:32 ` Antti P Miettinen
2012-01-07 3:47 ` mark gross
2012-01-07 8:54 ` Antti P Miettinen
2012-01-06 0:36 ` [PATCH 3/6] cpufreq: Export user_policy min/max Antti P Miettinen
2012-01-06 15:33 ` mark gross
2012-01-06 19:29 ` Antti P Miettinen
2012-01-07 3:53 ` mark gross
2012-01-07 8:47 ` Antti P Miettinen
2012-01-09 14:18 ` mark gross
2012-01-06 0:36 ` [PATCH 4/6] cpufreq: Preserve sysfs min/max request Antti P Miettinen
2012-01-06 0:36 ` [PATCH 5/6] cpufreq: Enforce PM QoS min/max limits Antti P Miettinen
2012-01-06 15:38 ` mark gross
2012-01-06 0:36 ` [PATCH 6/6] input: CPU frequency booster Antti P Miettinen
2012-01-06 15:40 ` mark gross
2012-01-06 15:18 ` mark gross [this message]
2012-01-06 15:46 ` [PATCH 0/6] RFC: CPU frequency min/max as PM QoS params mark gross
2012-01-06 19:38 ` Antti P Miettinen
2012-01-07 2:57 ` mark gross
2012-01-06 18:27 ` mark gross
2012-01-08 22:59 ` Rafael J. Wysocki
2012-01-09 14:23 ` mark gross
2012-01-09 21:27 ` Rafael J. Wysocki
2012-01-09 21:57 ` Antti P Miettinen
2012-01-10 20:44 ` Rafael J. Wysocki
2012-01-11 7:26 ` Antti P Miettinen
2012-01-11 23:15 ` Rafael J. Wysocki
2012-01-12 8:37 ` Antti P Miettinen
2012-01-12 23:55 ` Rafael J. Wysocki
2012-01-10 4:50 ` mark gross
2012-01-10 20:46 ` Rafael J. Wysocki
2012-01-10 21:02 ` Jean Pihet
2012-01-11 7:32 ` Antti P Miettinen
2012-01-11 23:00 ` Rafael J. Wysocki
2012-01-12 8:43 ` Antti P Miettinen
2012-01-13 4:37 ` mark gross
2012-01-12 3:06 ` mark gross
2012-01-12 23:52 ` Rafael J. Wysocki
2012-01-12 3:01 ` mark gross
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20120106151818.GC12530@mgross-G62 \
--to=markgross@thegnar.org \
--cc=amiettinen@nvidia.com \
--cc=linux-pm@lists.linux-foundation.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox