From: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
To: Viresh Kumar <viresh.kumar@linaro.org>,
Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
dirk.j.brandewie@intel.com
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>,
linux-pm@vger.kernel.org, Daniel Vetter <daniel.vetter@intel.com>,
lenb@kernel.org
Subject: Re: CPUfreq lockdep issue
Date: Fri, 19 Feb 2016 14:35:44 -0800 [thread overview]
Message-ID: <1455921344.8680.36.camel@linux.intel.com> (raw)
In-Reply-To: <20160219091723.GB22812@vireshk-i7>
On Fri, 2016-02-19 at 14:47 +0530, Viresh Kumar wrote:
> Adding the maintainers of the driver in cc now.
[...]
Hi Viresh,
> Hi Guys,
>
> Joonas reported a lockdep between cpufreq and intel-pstate driver and
> we are looking for probable solutions.
>
> I failed to understand why should we run intel_pstate_hwp_set() for
> each online CPU, while the frequency is changed only for a group of
> CPUs that belong to a policy.
Don't need from set_policy interface.
> Ofcourse intel_pstate_hwp_set() is
> required to be run for all CPUs, while the sysfs files are touched.
> And so, do we have a problem with below diff?
I gave a quick test, the change works fine.
Thanks,
Srinivas
next prev parent reply other threads:[~2016-02-19 22:37 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-18 11:06 CPUfreq lockdep issue Joonas Lahtinen
2016-02-18 11:34 ` Viresh Kumar
2016-02-19 8:50 ` Joonas Lahtinen
2016-02-19 9:17 ` Viresh Kumar
2016-02-19 22:35 ` Srinivas Pandruvada [this message]
2016-02-19 23:14 ` Rafael J. Wysocki
2016-02-22 9:10 ` Viresh Kumar
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=1455921344.8680.36.camel@linux.intel.com \
--to=srinivas.pandruvada@linux.intel.com \
--cc=daniel.vetter@intel.com \
--cc=dirk.j.brandewie@intel.com \
--cc=joonas.lahtinen@linux.intel.com \
--cc=lenb@kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=rjw@rjwysocki.net \
--cc=viresh.kumar@linaro.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;
as well as URLs for NNTP newsgroup(s).