From: Alex Shi <alex.shi@intel.com>
To: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Linux PM list <linux-pm@vger.kernel.org>,
"Brown, Len" <len.brown@intel.com>,
"Wysocki, Rafael J" <rafael.j.wysocki@intel.com>,
Arjan van de Ven <arjan@linux.intel.com>,
LKP ML <lkp@linux.intel.com>
Subject: Re: bltk-game regressions on snb laptop
Date: Fri, 19 Apr 2013 22:43:32 +0800 [thread overview]
Message-ID: <51715814.4080209@intel.com> (raw)
In-Reply-To: <CAKohpongtqt0Sdc95TTrJ+s5A3Xt7df+SmtBZNyHzQKtARLxKA@mail.gmail.com>
On 04/19/2013 08:23 PM, Viresh Kumar wrote:
> So you get better performance without my patch because we don't allocate
> any struct cpufreq_policy for any of the cpus leaving first one. And so only
> manage freq change for it and all other cpus stay at max power..
>
> So, we clearly need to know why don't we want to have all cpus set in
> policy->cpus, when they actually share clock line?
AFAIK, That because our p-state is HW coordinated. For further info,
Maybe Arjan and Len can explain more.
--
Thanks
Alex
next prev parent reply other threads:[~2013-04-19 14:43 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-16 7:14 bltk-game regressions on snb laptop Alex Shi
2013-04-17 16:34 ` Rafael J. Wysocki
2013-04-18 0:23 ` Alex Shi
2013-04-17 16:46 ` Viresh Kumar
2013-04-18 0:48 ` Alex Shi
2013-04-18 4:26 ` Viresh Kumar
2013-04-18 4:36 ` Viresh Kumar
2013-04-18 5:24 ` Alex Shi
2013-04-18 5:16 ` Alex Shi
2013-04-18 5:37 ` Viresh Kumar
2013-04-18 6:16 ` Alex Shi
2013-04-18 8:54 ` Alex Shi
2013-04-18 10:01 ` Viresh Kumar
2013-04-19 10:00 ` Alex Shi
2013-04-19 12:23 ` Viresh Kumar
2013-04-19 14:43 ` Alex Shi [this message]
2013-04-19 15:44 ` Arjan van de Ven
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