From: Viresh Kumar <viresh.kumar@linaro.org>
To: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>,
Linux PM list <linux-pm@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Subject: Re: [PATCH] cpufreq: Do not schedule policy update work in cpufreq_resume()
Date: Wed, 16 Mar 2016 11:52:09 +0700 [thread overview]
Message-ID: <20160316045209.GC16250@vireshk-mac-ubuntu> (raw)
In-Reply-To: <CAJZ5v0j3T37SooAmm+3qRb53HXXXomFz-h+BN0pG0zfpENk_cA@mail.gmail.com>
On 16-03-16, 01:51, Rafael J. Wysocki wrote:
> OK, so the problem with doing that in syscore ops is that the I2C bus
> needed for it may not be available at that point, which is fair
> enough.
Not just that. We wouldn't call syscore-ops for the boot-cpu. It never went
away.
> Still, though, the way it is done now is really awful and has to go.
>
> I guess something along the lines of cpufreq_update_policy() might be
> done in cpufreq_resume() before governors are started, but it might
> even be better to set policy->cur from scratch when starting the
> governors. Just do driver->get() and set policy->cur to what that
> returns (or just use the average of min and max if ->get is not
> available). And that unconditionally, regardless of the reason why
> the governors are started.
I think doing it from a somewhat centric location would make more sense then
pushing this for the governors. Maybe the beginning of cpufreq_resume() is good
enough for that.
--
viresh
next prev parent reply other threads:[~2016-03-16 4:52 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-12 2:05 [PATCH] cpufreq: Do not schedule policy update work in cpufreq_resume() Rafael J. Wysocki
2016-03-15 6:10 ` Viresh Kumar
2016-03-15 12:11 ` Rafael J. Wysocki
2016-03-16 0:51 ` Rafael J. Wysocki
2016-03-16 4:52 ` Viresh Kumar [this message]
2016-03-16 12:29 ` Rafael J. Wysocki
2016-03-17 6:44 ` Viresh Kumar
2016-03-16 4:47 ` Viresh Kumar
2016-03-16 13:12 ` Rafael J. Wysocki
2016-03-17 6:30 ` 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=20160316045209.GC16250@vireshk-mac-ubuntu \
--to=viresh.kumar@linaro.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=rafael@kernel.org \
--cc=rjw@rjwysocki.net \
--cc=srinivas.pandruvada@linux.intel.com \
/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).