From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751156AbaK1Ddv (ORCPT ); Thu, 27 Nov 2014 22:33:51 -0500 Received: from userp1040.oracle.com ([156.151.31.81]:38779 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751031AbaK1Ddt (ORCPT ); Thu, 27 Nov 2014 22:33:49 -0500 From: Ethan Zhao To: dirk.j.brandewie@intel.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, joe.jin@oracle.com, brian.maly@oracle.com, Ethan Zhao Subject: [PATCH 0/2 V4] intel_pstate: skip this driver if hit Sun X86 servers Date: Fri, 28 Nov 2014 12:33:09 +0900 Message-Id: <1417145592-21829-1-git-send-email-ethan.zhao@oracle.com> X-Mailer: git-send-email 1.8.3.1 X-Source-IP: acsinet22.oracle.com [141.146.126.238] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 and the suggestion,review from Dirk Brandewie . -- 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