From patchwork Wed Apr 10 15:00:48 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ulf Hansson X-Patchwork-Id: 2422011 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) by patchwork1.kernel.org (Postfix) with ESMTP id C9EE53FCA5 for ; Wed, 10 Apr 2013 15:02:21 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UPwX8-0001YU-Vw; Wed, 10 Apr 2013 15:01:59 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UPwWX-0007NH-OC; Wed, 10 Apr 2013 15:01:21 +0000 Received: from eu1sys200aog104.obsmtp.com ([207.126.144.117]) by merlin.infradead.org with smtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UPwWT-0007Mf-Fj for linux-arm-kernel@lists.infradead.org; Wed, 10 Apr 2013 15:01:18 +0000 Received: from beta.dmz-eu.st.com ([164.129.1.35]) (using TLSv1) by eu1sys200aob104.postini.com ([207.126.147.11]) with SMTP ID DSNKUWV+q4Sr7EmgdjU9ocV9+TPY+E7qegRP@postini.com; Wed, 10 Apr 2013 15:01:17 UTC Received: from zeta.dmz-eu.st.com (zeta.dmz-eu.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 0B80A1F5; Wed, 10 Apr 2013 15:00:58 +0000 (GMT) Received: from relay2.stm.gmessaging.net (unknown [10.230.100.18]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 9D39B52A4; Wed, 10 Apr 2013 15:00:56 +0000 (GMT) Received: from exdcvycastm004.EQ1STM.local (alteon-source-exch [10.230.100.61]) (using TLSv1 with cipher RC4-MD5 (128/128 bits)) (Client CN "exdcvycastm004", Issuer "exdcvycastm004" (not verified)) by relay2.stm.gmessaging.net (Postfix) with ESMTPS id 467C0A807B; Wed, 10 Apr 2013 17:00:52 +0200 (CEST) Received: from steludxu1397.lud.stericsson.com (10.230.100.153) by smtp.stericsson.com (10.230.100.2) with Microsoft SMTP Server (TLS) id 8.3.279.5; Wed, 10 Apr 2013 17:00:58 +0200 From: Ulf Hansson To: "Rafael J. Wysocki" , Subject: [RESEND PATCH] PM / Runtime: Idle devices asynchronously after probe|release Date: Wed, 10 Apr 2013 17:00:48 +0200 Message-ID: <1365606048-27603-1-git-send-email-ulf.hansson@stericsson.com> X-Mailer: git-send-email 1.7.10 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130410_110117_943816_195F0492 X-CRM114-Status: GOOD ( 14.28 ) X-Spam-Score: -4.2 (----) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-4.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [207.126.144.117 listed in list.dnswl.org] -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: Ulf Hansson , Kevin Hilman , Greg Kroah-Hartman , Rickard Andersson , Alan Stern , linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Ulf Hansson Putting devices into idle|suspend in a synchronous manner means we are waiting for each device to become idle|suspended before the probe|release is fully done. This patch switch to use the asynchronous runtime PM API:s instead and thus improves the parallelism since we can move on and handle the next device in queue in an earlier phase. Signed-off-by: Ulf Hansson Cc: Kevin Hilman Cc: Alan Stern Cc: Greg Kroah-Hartman Acked-by: Rafael J. Wysocki Acked-by: Kevin Hilman --- drivers/base/dd.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/base/dd.c b/drivers/base/dd.c index bb5645e..35fa368 100644 --- a/drivers/base/dd.c +++ b/drivers/base/dd.c @@ -380,7 +380,7 @@ int driver_probe_device(struct device_driver *drv, struct device *dev) pm_runtime_barrier(dev); ret = really_probe(dev, drv); - pm_runtime_idle(dev); + pm_request_idle(dev); return ret; } @@ -428,7 +428,7 @@ int device_attach(struct device *dev) } } else { ret = bus_for_each_drv(dev->bus, NULL, dev, __device_attach); - pm_runtime_idle(dev); + pm_request_idle(dev); } out_unlock: device_unlock(dev); @@ -499,7 +499,7 @@ static void __device_release_driver(struct device *dev) BUS_NOTIFY_UNBIND_DRIVER, dev); - pm_runtime_put_sync(dev); + pm_runtime_put(dev); if (dev->bus && dev->bus->remove) dev->bus->remove(dev);