From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Rafael J. Wysocki" Subject: Re: [RFC PATCH] suspend/resume performance improvement Date: Wed, 27 May 2015 02:24:59 +0200 Message-ID: <6784182.VyN0PstglH@vostro.rjw.lan> References: <1141174354.499851432649147087.JavaMail.weblogic@epmlwas01d> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <1141174354.499851432649147087.JavaMail.weblogic@epmlwas01d> Sender: linux-kernel-owner@vger.kernel.org To: eun.taik.lee@samsung.com Cc: pavel@ucw.cz, len.brown@intel.com, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-pm@vger.kernel.org On Tuesday, May 26, 2015 02:05:48 PM =EC=9D=B4=EC=9D=80=ED=83=9D wrote: > When a task that calls state_store() to suspend > the device has used up most of its time slice, > suspend sometimes take too long. (User noticeable) >=20 > Suspend/resume is a system wide operation. > So, instead of depending on a userspace task's time > slice, let kworker do the work to avoid a long wait > on the runqueue. All of that seems to duplicate the existing autosleep.c functionality. --=20 I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center.