From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755896Ab1KCOxE (ORCPT ); Thu, 3 Nov 2011 10:53:04 -0400 Received: from www.linutronix.de ([62.245.132.108]:58815 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753244Ab1KCOxB (ORCPT ); Thu, 3 Nov 2011 10:53:01 -0400 Date: Thu, 3 Nov 2011 15:52:59 +0100 (CET) From: Thomas Gleixner To: John Stultz cc: LKML , Yong Zhang , David Daney Subject: Re: [PATCH] clocksource: Avoid selecting mult values that might overflow when adjusted In-Reply-To: Message-ID: References: <1320264087-3413-1-git-send-email-john.stultz@linaro.org> <1320325819.2892.1.camel@js-netbook> <1320328869.3681.17.camel@js-netbook> <1320329371.3681.20.camel@js-netbook> User-Agent: Alpine 2.02 (LFD 1266 2009-07-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 3 Nov 2011, Thomas Gleixner wrote: > On Thu, 3 Nov 2011, John Stultz wrote: > > Oh, and the other bit is that not all clocksources have been converted > > over to using clocksource_register_hz/khz, so some may be using very > > small shift values, which could more easily hit large % mult adjustment > > (due to the resulting coarseness of each integer change) that wouldn't > > cause overflows. > > Fair enough. I'm queuing it. That want's a cc stable as well, right ?