From patchwork Mon Jan 6 12:54:26 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ramkumar Ramachandra X-Patchwork-Id: 3437891 Return-Path: X-Original-To: patchwork-linux-pm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 535FE9F1C4 for ; Mon, 6 Jan 2014 12:54:28 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 253D32017E for ; Mon, 6 Jan 2014 12:54:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C3C322017B for ; Mon, 6 Jan 2014 12:54:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751822AbaAFMyY (ORCPT ); Mon, 6 Jan 2014 07:54:24 -0500 Received: from mail-pd0-f177.google.com ([209.85.192.177]:63396 "EHLO mail-pd0-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751580AbaAFMyX (ORCPT ); Mon, 6 Jan 2014 07:54:23 -0500 Received: by mail-pd0-f177.google.com with SMTP id q10so18034860pdj.22 for ; Mon, 06 Jan 2014 04:54:23 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=udKvI/gwboMBau9wIYFnoVbTFFd0YcFYKkN66MJUxro=; b=k/ZOVMbOlMj2se/i5moyBgpgzGe5zcXi39WuRH/v2rL8hF40gv7FhJvgLeqxD/4Mhl Xgy0PdXDvqRiPjExTzDg0MsC29QSMmSQiTAY+wTYdBIYZBSTEO/Xyr2gcz/abIasGl1I DL2qugvrrRBk+DBO8s6OGOgs/aHQ0oGZIwj3NBCNXEodN4MqwPl4ko8ou0vIcS4gDMOO eS0Hf3BY2rpwjOfJVRdXWC0w4HKp9y2l9IzXuKv9MtNUh04ODUElnHDGE/1njPRyDzp4 d0A0v0mXdS9/wmy5QoY7eB1IAWwo/WbuNmpniStVGbOFjvdOKdHx4xAPzF6N+a4KfeCa TowQ== X-Received: by 10.68.138.226 with SMTP id qt2mr125369639pbb.65.1389012863329; Mon, 06 Jan 2014 04:54:23 -0800 (PST) Received: from localhost.localdomain ([122.164.141.93]) by mx.google.com with ESMTPSA id ko10sm116494418pbd.38.2014.01.06.04.54.20 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 06 Jan 2014 04:54:22 -0800 (PST) From: Ramkumar Ramachandra To: LKML Cc: Dirk Brandewie , "Rafael J. Wysocki" , Randy Dunlap , Linux PM Subject: [PATCH v2] Documentation: add ABI entry for intel_pstate Date: Mon, 6 Jan 2014 18:24:26 +0530 Message-Id: <1389012866-29821-1-git-send-email-artagnon@gmail.com> X-Mailer: git-send-email 1.8.5.2.227.g53f3478 In-Reply-To: <1388997077-25138-1-git-send-email-artagnon@gmail.com> References: <1388997077-25138-1-git-send-email-artagnon@gmail.com> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add a Documentation/ABI entry for /sys/devices/system/cpu/intel_pstate/max_perf_pct, /sys/devices/system/cpu/intel_pstate/min_perf_pct, and /sys/devices/system/cpu/intel_pstate/no_turbo. Cc: Dirk Brandewie Cc: Rafael J. Wysocki Cc: Randy Dunlap Cc: Linux PM Signed-off-by: Ramkumar Ramachandra --- Documentation/ABI/testing/sysfs-devices-system-cpu | 24 ++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu b/Documentation/ABI/testing/sysfs-devices-system-cpu index 468e4d4..d5a0d33 100644 --- a/Documentation/ABI/testing/sysfs-devices-system-cpu +++ b/Documentation/ABI/testing/sysfs-devices-system-cpu @@ -200,3 +200,27 @@ Description: address and size of the percpu note. note of cpu#. crash_notes_size: size of the note of cpu#. + + +What: /sys/devices/system/cpu/intel_pstate/max_perf_pct + /sys/devices/system/cpu/intel_pstate/min_perf_pct + /sys/devices/system/cpu/intel_pstate/no_turbo +Date: February 2013 +Contact: linux-pm@vger.kernel.org +Description: Parameters for the Intel P-state driver + + Logic for selecting the current P-state in Intel + Sandybridge+ processors. The three knobs control + limits for the P-state that will be requested by the + driver. + + max_perf_pct: limits the maximum P state that will be requested by + the driver stated as a percentage of the available performance. + + min_perf_pct: limits the minimum P state that will be requested by + the driver stated as a percentage of the available performance. + + no_turbo: limits the driver to selecting P states below the turbo + frequency range. + + More details can be found in Documentation/cpu-freq/intel-pstate.txt