Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262983AbTI2WCv (ORCPT ); Mon, 29 Sep 2003 18:02:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262985AbTI2WCv (ORCPT ); Mon, 29 Sep 2003 18:02:51 -0400 Received: from gprs144-48.eurotel.cz ([160.218.144.48]:51332 "EHLO amd.ucw.cz") by vger.kernel.org with ESMTP id S262983AbTI2WCs (ORCPT ); Mon, 29 Sep 2003 18:02:48 -0400 Date: Mon, 29 Sep 2003 23:59:46 +0200 From: Pavel Machek To: Pavel Machek Cc: Pavel Machek , Linus Torvalds , kernel list , Patrick Mochel Subject: Re: pm: Revert swsusp to 2.6.0-test3 Message-ID: <20030929215946.GG1815@elf.ucw.cz> References: <20030928100620.5FAA63450F@smtp-out2.iol.cz> <20030928175853.GF359@elf.ucw.cz> <20030929204634.GA2425@elf.ucw.cz> <20030929213446.GF1815@elf.ucw.cz> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030929213446.GF1815@elf.ucw.cz> X-Warning: Reading this can be dangerous to your mental health. User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi! > > > > I'd also like to have some kind of readme or similar on the different > > > > suspend/resume issues, and why we have two different > > > > approaches. Hmm? > > > > What about this one? > > Thanks to Tomas Szepe, grammar fixed a bit. Okay, third version, thanks to Samurai. --- clean/Documentation/power/swsusp.txt 2003-08-27 12:00:01.000000000 +0200 +++ linux/Documentation/power/swsusp.txt 2003-09-29 23:59:01.000000000 +0200 @@ -17,6 +17,24 @@ You need to append resume=/dev/your_swap_partition to kernel command line. Then you suspend by echo 4 > /proc/acpi/sleep. +Pavel's unreliable guide to swsusp mess +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +There are currently two versions of swap suspend in the kernel, the old +"Pavel's" version in kernel/power/swsusp.c and the new "Patrick's" +version in kernel/power/pmdisk.c. They provide the same functionality; +the old version looks ugly but was tested, while the new version looks +nicer but did not receive so much testing. echo 4 > /proc/acpi/sleep +calls the old version, echo disk > /sys/power/state calls the new one. + +[In the future, when the new version is stable enough, two things can +happen: + +* the new version is moved into swsusp.c, and swsusp is renamed to swap + suspend (Pavel prefers this) + +* pmdisk is kept as is and swsusp.c is removed from the kernel] + [Notice. Rest docs is pretty outdated (see date!) It should be safe to use swsusp on ext3/reiserfs these days.] -- When do you have a heart between your knees? [Johanka's followup: and *two* hearts?] - 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/