From: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
To: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: len.brown@intel.com, linux-pm@vger.kernel.org
Subject: Re: [PATCH] cpufreq: intel_pstate: disable HWP notifications
Date: Thu, 25 Feb 2016 15:20:42 -0800 [thread overview]
Message-ID: <1456442442.17628.12.camel@linux.intel.com> (raw)
In-Reply-To: <4390416.B5Ve4E8iPL@vostro.rjw.lan>
On Fri, 2016-02-26 at 00:18 +0100, Rafael J. Wysocki wrote:
> On Thursday, February 25, 2016 03:09:31 PM Srinivas Pandruvada wrote:
> > Disable HWP Interrupt notification before enabling HWP. Since we
> > don't
> > have HWP interrupt handling for possible performance interrupts,
> > there
> > is not much use of enabling HWP interrupts.
> >
> > Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel
> > .com>
>
> The patch is fine, but are there any known systems where it fixes any
> functional issues just for the record?
We don't know whether it fixes any functional issue. But it was set on
some system on boot. I worry that this may cause flooding of interrupt
during boot if there are some thermal issues.
Thanks,
Srinivas
>
> Rafael
>
next prev parent reply other threads:[~2016-02-25 23:22 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-25 23:09 [PATCH] cpufreq: intel_pstate: disable HWP notifications Srinivas Pandruvada
2016-02-25 23:18 ` Rafael J. Wysocki
2016-02-25 23:20 ` Srinivas Pandruvada [this message]
2016-02-26 1:28 ` Rafael J. Wysocki
2016-02-27 0:01 ` Rafael J. Wysocki
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=1456442442.17628.12.camel@linux.intel.com \
--to=srinivas.pandruvada@linux.intel.com \
--cc=len.brown@intel.com \
--cc=linux-pm@vger.kernel.org \
--cc=rjw@rjwysocki.net \
/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).