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From: Ethan Zhao <ethan.zhao@oracle.com>
To: dirk.j.brandewie@intel.com, linda.knippers@hp.com,
	viresh.kumar@linaro.org, rjw@rjwysocki.net, corbet@lwn.net
Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-pm@vger.kernel.org, ethan.kernel@gmail.com,
	Ethan Zhao <ethan.zhao@oracle.com>
Subject: [PATCH 0/2 V4] intel_pstate: skip this driver if hit Sun X86 servers
Date: Thu, 27 Nov 2014 17:35:30 +0900	[thread overview]
Message-ID: <1417077332-7453-1-git-send-email-ethan.zhao@oracle.com> (raw)

Oracle Sun servers(X86) have power capping features that work via ACPI _PPC method,
patch No.1 is used to skip this driver if Oracle Sun server and _PPC detected.
Patch No.2 introduces a kernel command line parameter for those who would like
to enable intel_pstate on Sun X86 servers and be aware of the risk of no power
capping capability working and try to get better performance.

Compiled and tested with stable-3.18-rc5 on Oracle Sun server X4-2 series.

Thanks test and review by Linda Knippers <linda.knippers@hp.com>
and the suggestion,review from Dirk Brandewie <dirk.j.brandewie@intel.com>.
--
v2: fix break HP Proliant issue.
v3: expand the hardware vendor list.
v4: refine code and doc

Ethan Zhao (2):
  intel_pstate: skip this driver if Sun server has _PPC method
  intel_pstate: add kernel parameter to force loading on Sun X86
    servers.

 Documentation/kernel-parameters.txt |  5 ++++
 drivers/cpufreq/intel_pstate.c      | 49 ++++++++++++++++++++++++++++++++++---
 2 files changed, 50 insertions(+), 4 deletions(-)

-- 
1.8.3.1


             reply	other threads:[~2014-11-27  8:35 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-11-27  8:35 Ethan Zhao [this message]
2014-11-27  8:35 ` [PATCH 1/2 V4] intel_pstate: skip this driver if Sun server has _PPC method Ethan Zhao
2014-11-27  8:35 ` [PATCH 2/2 V4] intel_pstate: add kernel parameter to force loading on Sun X86 servers Ethan Zhao
2014-11-28  3:33 [PATCH 0/2 V4] intel_pstate: skip this driver if hit " Ethan Zhao
2014-11-28  3:36 Ethan Zhao

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