From patchwork Mon May 13 02:42:12 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Zhang, Rui" X-Patchwork-Id: 2556121 Return-Path: X-Original-To: patchwork-linux-pm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id 66F9BDF215 for ; Mon, 13 May 2013 02:42:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753644Ab3EMCmT (ORCPT ); Sun, 12 May 2013 22:42:19 -0400 Received: from mga14.intel.com ([143.182.124.37]:20547 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753628Ab3EMCmS (ORCPT ); Sun, 12 May 2013 22:42:18 -0400 Received: from azsmga001.ch.intel.com ([10.2.17.19]) by azsmga102.ch.intel.com with ESMTP; 12 May 2013 19:42:18 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.87,658,1363158000"; d="scan'208";a="301454161" Received: from unknown (HELO rzhang1-mobl4.ccr.corp.intel.com) ([10.255.20.31]) by azsmga001.ch.intel.com with ESMTP; 12 May 2013 19:42:16 -0700 From: Zhang Rui To: rjw@sisk.pl Cc: linux-pm@vger.kernel.org, Zhang Rui Subject: [PATCH 2/2] PM: documentation update: remove inaccurate suspend/hibernate transition lantency statement Date: Mon, 13 May 2013 10:42:12 +0800 Message-Id: <1368412932-4500-2-git-send-email-rui.zhang@intel.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1368412932-4500-1-git-send-email-rui.zhang@intel.com> References: <1368412932-4500-1-git-send-email-rui.zhang@intel.com> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org The lantency of the transition from suspend and hibernate is platform-dependent. Thus we should not refer the lantency in the documentation. Signed-off-by: Zhang Rui --- Documentation/power/states.txt | 10 ---------- 1 file changed, 10 deletions(-) diff --git a/Documentation/power/states.txt b/Documentation/power/states.txt index 42f28b7..442d43d 100644 --- a/Documentation/power/states.txt +++ b/Documentation/power/states.txt @@ -36,9 +36,6 @@ We try to put devices in a low-power state equivalent to D1, which also offers low power savings, but low resume latency. Not all devices support D1, and those that don't are left on. -A transition from Standby to the On state should take about 1-2 -seconds. - State: Suspend-to-RAM ACPI State: S3 @@ -56,9 +53,6 @@ transition back to the On state. For at least ACPI, STR requires some minimal boot-strapping code to resume the system from STR. This may be true on other platforms. -A transition from Suspend-to-RAM to the On state should take about -3-5 seconds. - State: Suspend-to-disk ACPI State: S4 @@ -88,7 +82,3 @@ low-power state (like ACPI S4), or it may simply power down. Powering down offers greater savings, and allows this mechanism to work on any system. However, entering a real low-power state allows the user to trigger wake up events (e.g. pressing a key or opening a laptop lid). - -A transition from Suspend-to-Disk to the On state should take about 30 -seconds, though it's typically a bit more with the current -implementation.