From: Youquan Song <youquan.song@intel.com>
To: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Youquan Song <youquan.song@intel.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
linux-kernel@vger.kernel.org, mingo@elte.hu, tglx@linutronix.de,
hpa@zytor.com, akpm@linux-foundation.org, stable@vger.kernel.org,
arjan@linux.intel.com, len.brown@intel.com, anhua.xu@intel.com,
chaohong.guo@intel.com,
Youquan Song <youquan.song@linux.intel.com>
Subject: Re: [PATCH] x86,sched: Fix sched_smt_power_savings totally broken
Date: Tue, 10 Jan 2012 11:54:26 -0500 [thread overview]
Message-ID: <20120110165426.GA20681@linux-youquan.bj.intel.com> (raw)
In-Reply-To: <1326153163.2366.7.camel@sbsiddha-mobl2>
> Youquan, As far as I know both the
> sched_smt_power_savings/sched_mc_power_savings are broken for atleast an
> year.
>
> Have you checked the state of 'sched_mc_power_savings' to see if it is
> working or gets addressed with your proposed patches?
Thanks Suresh!
We have verified that sched_mc_power_savings works well in mainline and
-tip tree, only sched_smt_power_savings broken.
Sorry. My proposed patch last night still need be refreshed. After I closely look
at SD_PREFER_SIBLING logic, there is possible a fighting which Peter has
mentioned it.
I will post a update patch soon.
-Youquan
next prev parent reply other threads:[~2012-01-10 16:54 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-09 8:56 [PATCH] x86,sched: Fix sched_smt_power_savings totally broken Youquan Song
2012-01-09 10:06 ` Peter Zijlstra
2012-01-09 10:28 ` Peter Zijlstra
2012-01-09 10:30 ` Peter Zijlstra
2012-01-09 11:00 ` Vaidyanathan Srinivasan
2012-01-09 14:35 ` Peter Zijlstra
2012-01-09 16:03 ` Vaidyanathan Srinivasan
2012-01-09 16:13 ` Peter Zijlstra
2012-01-09 17:05 ` Vaidyanathan Srinivasan
2012-01-09 14:13 ` Arjan van de Ven
2012-01-10 0:14 ` Youquan Song
2012-01-09 11:05 ` Peter Zijlstra
2012-01-10 5:58 ` Youquan Song
2012-01-09 23:52 ` Suresh Siddha
2012-01-10 9:18 ` Ingo Molnar
2012-01-10 14:32 ` Arjan van de Ven
2012-01-10 14:41 ` Peter Zijlstra
2012-01-10 14:54 ` Arjan van de Ven
2012-01-10 15:32 ` Vincent Guittot
2012-01-10 16:49 ` Vaidyanathan Srinivasan
2012-01-10 19:41 ` Ingo Molnar
2012-01-10 19:44 ` Ingo Molnar
2012-01-10 16:54 ` Youquan Song [this message]
2012-01-10 16:51 ` Vaidyanathan Srinivasan
2012-01-10 19:01 ` Suresh Siddha
2012-01-11 3:52 ` Vaidyanathan Srinivasan
2012-01-11 17:37 ` Youquan Song
2012-01-10 16:44 ` Vaidyanathan Srinivasan
2012-01-09 11:12 ` Peter Zijlstra
2012-01-09 14:29 ` Vincent Guittot
2012-01-09 14:46 ` Peter Zijlstra
2012-01-10 2:12 ` Indan Zupancic
2012-01-10 9:26 ` Peter Zijlstra
2012-01-10 1:54 ` Suresh Siddha
2012-01-10 8:08 ` Vincent Guittot
2012-01-09 15:37 ` Greg KH
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