Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751326AbVKLEsy (ORCPT ); Fri, 11 Nov 2005 23:48:54 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751332AbVKLEsy (ORCPT ); Fri, 11 Nov 2005 23:48:54 -0500 Received: from e33.co.us.ibm.com ([32.97.110.151]:51893 "EHLO e33.co.us.ibm.com") by vger.kernel.org with ESMTP id S1751326AbVKLEsx (ORCPT ); Fri, 11 Nov 2005 23:48:53 -0500 Date: Fri, 11 Nov 2005 21:48:50 -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 Message-Id: <20051112044850.8240.91581.sendpatchset@cog.beaverton.ibm.com> Subject: [PATCH 0/13] Time: Generic Timeofday Subsystem (v B10) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2048 Lines: 49 All, I had hoped to submit this to -mm today, but since Ingo pointed out an issue in the __delay code, I'm going to wait a week so the new fix can be better tested. The following patchset applies against 2.6.14-mm2 (with some offsets and fuzz) 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. Thomas Gleixner has been quite helpful in deeply reviewing and suggesting changes to the code, so many thanks to him for his help! New in this release: o Use ktimer for periodic_hook o minor performance tweaks o i386 __delay fix o docs and howtos in Documentation/timekeeping.txt Still on the TODO list: o Get a weeks worth of testing o Submit to -mm (planned for the next release) 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. Please let me know if you have any comments or feedback. 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/