Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753219Ab2BFHcd (ORCPT ); Mon, 6 Feb 2012 02:32:33 -0500 Received: from mga11.intel.com ([192.55.52.93]:54923 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750942Ab2BFHcc (ORCPT ); Mon, 6 Feb 2012 02:32:32 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.71,315,1320652800"; d="scan'208";a="121267483" From: Huang Ying To: Alan Stern Cc: ming.m.lin@intel.com, linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, linux-pm@vger.kernel.org, "Rafael J. Wysocki" , James Bottomley , Huang Ying Subject: [RFC 0/5] scsi, sd, pm, request based runtime PM for scsi disk Date: Mon, 6 Feb 2012 15:32:23 +0800 Message-Id: <1328513548-19786-1-git-send-email-ying.huang@intel.com> X-Mailer: git-send-email 1.7.8.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 984 Lines: 22 SSD becomes more and more popular, this makes it possible to put disk into low power state more often. And request based runtime PM for scsi disk is more useful than open/close based one because disk is normally mounted at most time. One known issue, because SCSI TEST_UNIT_READY will be put into request queue every 2 seconds by default, this makes it hard for disk to sleep. Maybe we can implement check_events callback in some other way? [RFC 1/5] pm, runtime, Add resume notifier [RFC 2/5] scsi, pm, rename scsi_autopm_get/put_xxx to [RFC 3/5] scsi, pm, add pm_runtime_get/put in scsi request [RFC 4/5] scsi, pm, use autosuspend for scsi runtime PM [RFC 5/5] scsi, sd, pm, request based runtime PM support Best Regards, Huang Ying -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/