From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751681Ab1GZGaG (ORCPT ); Tue, 26 Jul 2011 02:30:06 -0400 Received: from e39.co.us.ibm.com ([32.97.110.160]:36137 "EHLO e39.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751293Ab1GZG37 (ORCPT ); Tue, 26 Jul 2011 02:29:59 -0400 Subject: [GIT PULL] RTC fixes for 3.1 From: john stultz To: Thomas Gleixner Cc: lkml , Ingo Molnar , Ben Greear , Andrew Morton , Willy Tarreau Content-Type: text/plain; charset="UTF-8" Date: Mon, 25 Jul 2011 23:29:54 -0700 Message-ID: <1311661794.2945.305.camel@work-vm> Mime-Version: 1.0 X-Mailer: Evolution 2.32.2 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hey Thomas, So while your analysis obviously pointed out the problem, just to be sure I took your rtc patches and ran them through the stress test that I was using to reproduce the issue Ben reported, and they've lasted for over six hours now without issue (usually I could trigger the lockup in 30 minutes to an hour). Thanks again for the narrowing down the issue and the patches to fix it! I've reworked some of the commit logs and also refined the PIE hrtimer freq limit (using Willy's suggestion of the ~8khz max value from the man page). The patches are available in the git repository at: git://git.linaro.org/people/jstultz/linux.git fortglx/3.1/tip/timers/rtc Thomas Gleixner (3): rtc: Handle errors correctly in rtc_irq_set_state() rtc: Fix hrtimer deadlock rtc: Limit RTC PIE frequency drivers/rtc/interface.c | 55 ++++++++++++++++++++++++++++++++-------------- include/linux/rtc.h | 3 ++ 2 files changed, 41 insertions(+), 17 deletions(-)