Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964827AbVKVBfY (ORCPT ); Mon, 21 Nov 2005 20:35:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964830AbVKVBfY (ORCPT ); Mon, 21 Nov 2005 20:35:24 -0500 Received: from e34.co.us.ibm.com ([32.97.110.152]:23705 "EHLO e34.co.us.ibm.com") by vger.kernel.org with ESMTP id S964826AbVKVBfX (ORCPT ); Mon, 21 Nov 2005 20:35:23 -0500 Date: Mon, 21 Nov 2005 18:35:16 -0700 From: john stultz To: lkml Cc: Ingo Molnar , Darren Hart , Nishanth Aravamudan , Frank Sorenson , George Anzinger , Roman Zippel , Ulrich Windl , Thomas Gleixner , john stultz , john stultz Message-Id: <20051122013515.18537.76463.sendpatchset@cog.beaverton.ibm.com> Subject: [PATCH 0/13] Time: Generic Timeofday Subsystem (v B11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2082 Lines: 47 All, The following patchset applies against 2.6.15-rc1-mm2 and provides a generic timekeeping subsystem that is independent of the timer interrupt. This allows for robust and correct behavior in cases of late or lost ticks, avoids interpolation errors, reduces duplication in arch specific code, and allows or assists future changes such as high-res timers, dynamic ticks, or realtime preemption. Additionally, it provides finer nanosecond resolution values to the clock_gettime functions. The patch set provides the minimal NTP changes, the clocksource abstraction, the core timekeeping code as well as the code to convert the i386 and x86-64 archs. I have started on converting more arches, but for now I'm focusing on i386 and x86-64. New in this release: o Proper sysfs entries (available_clocksources, current_clocksource) o disable pit clocksource on large smp (it doesn't scale) o dropped cyclone calibration o added extra paraniod checks o NUMAQ should not use TSC o AMD SMP tsc fallback (similar to x86-64's logic) Still on the TODO list: o Fix Frank Sorenson's c3tsc overcompensation problem o More testing o Submit to -mm (as soon as the c3tsc issue is resolved) I'd like to thank the following people who have contributed ideas, criticism, testing and code that has helped shape this work: George Anzinger, Nish Aravamudan, Max Asbock, Dominik Brodowski, Thomas Gleixner, Darren Hart, Christoph Lameter, Matt Mackal, Keith Mannthey, Ingo Molnar, Martin Schwidefsky, Frank Sorenson, Ulrich Windl, Darrick Wong, Roman Zippel and any others whom I've accidentally forgotten. I'll be out of town for the next couple of days on holiday, so forgive me if I don't respond until after Friday. However, do please let me know if you have any comments or feedback and I'll address them as soon as I get back. thanks -john - 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/