Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265526AbVBFIx5 (ORCPT ); Sun, 6 Feb 2005 03:53:57 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264383AbVBFIx5 (ORCPT ); Sun, 6 Feb 2005 03:53:57 -0500 Received: from mustang.oldcity.dca.net ([216.158.38.3]:17844 "HELO mustang.oldcity.dca.net") by vger.kernel.org with SMTP id S272784AbVBFIxL (ORCPT ); Sun, 6 Feb 2005 03:53:11 -0500 Subject: Re: [PATCH] Dynamic tick, version 050127-1 From: Lee Revell To: Pavel Machek Cc: Tony Lindgren , Benjamin Herrenschmidt , Arjan van de Ven , Martin Schwidefsky , Andrea Arcangeli , George Anzinger , Thomas Gleixner , john stultz , Zwane Mwaikambo , linux-kernel@vger.kernel.org In-Reply-To: <20050206081137.GA994@elf.ucw.cz> References: <20050201204008.GD14274@atomide.com> <20050201212542.GA3691@openzaurus.ucw.cz> <20050201230357.GH14274@atomide.com> <20050202141105.GA1316@elf.ucw.cz> <20050203030359.GL13984@atomide.com> <20050203105647.GA1369@elf.ucw.cz> <20050203164331.GE14325@atomide.com> <20050204051929.GO14325@atomide.com> <20050205230017.GA1070@elf.ucw.cz> <20050206023344.GA15853@atomide.com> <20050206081137.GA994@elf.ucw.cz> Content-Type: text/plain Date: Sun, 06 Feb 2005 03:53:09 -0500 Message-Id: <1107679990.3532.37.camel@krustophenia.net> Mime-Version: 1.0 X-Mailer: Evolution 2.0.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1997 Lines: 48 On Sun, 2005-02-06 at 09:11 +0100, Pavel Machek wrote: > I do have CONFIG_X86_PM_TIMER enabled, but it seems by board does not > have such piece of hardware: > > pavel@amd:/usr/src/linux-mm$ dmesg | grep -i "time\|tick\|apic" > PCI: Setting latency timer of device 0000:00:11.5 to 64 > pavel@amd:/usr/src/linux-mm$ If you are sure that machine supports ACPI, maybe this is your problem (from the POSIX high res timer patch): If you enable the ACPI pm timer and it cannot be found, it is possible that your BIOS is not producing the ACPI table or that your machine does not support ACPI. In the former case, see "Default ACPI pm timer address". If the timer is not found the boot will fail when trying to calibrate the 'delay' loop. [...] config HIGH_RES_TIMER_ACPI_PM_ADD int "Default ACPI pm timer address" depends on HIGH_RES_TIMER_ACPI_PM default 0 help This option is available for use on systems where the BIOS does not generate the ACPI tables if ACPI is not enabled. For example some BIOSes will not generate the ACPI tables if APM is enabled. The ACPI pm timer is still available but cannot be found by the software. This option allows you to supply the needed address. When the high resolution timers code finds a valid ACPI pm timer address it reports it in the boot messages log (look for lines that begin with "High-res-timers:"). You can turn on the ACPI support in the BIOS, boot the system and find this value. You can then enter it at configure time. Both the report and the entry are in decimal. HTH, Lee - 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/