linux-kernel - [PATCH 0/2 V4] intel_pstate: skip this driver if hit Sun X86 servers

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Date:	Fri, 28 Nov 2014 12:36:14 +0900
From:	Ethan Zhao <ethan.zhao@...cle.com>
To:	dirk.j.brandewie@...el.com, viresh.kumar@...aro.org,
	rjw@...ysocki.net, corbet@....net
Cc:	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-pm@...r.kernel.org, ethan.kernel@...il.com,
	joe.jin@...cle.com, brian.maly@...cle.com,
	Ethan Zhao <ethan.zhao@...cle.com>
Subject: [PATCH 0/2 V4] intel_pstate: skip this driver if hit Sun X86 servers

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@...com>
and the suggestion,review from Dirk Brandewie <dirk.j.brandewie@...el.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

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