From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1757057AbbCGJWn (ORCPT <rfc822;w@1wt.eu>);
	Sat, 7 Mar 2015 04:22:43 -0500
Received: from cpsmtpb-ews07.kpnxchange.com ([213.75.39.10]:53999 "EHLO
	cpsmtpb-ews07.kpnxchange.com" rhost-flags-OK-OK-OK-OK)
	by vger.kernel.org with ESMTP id S1757035AbbCGJWi (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Sat, 7 Mar 2015 04:22:38 -0500
Message-ID: <1425720156.24292.289.camel@x220>
Subject: Re: [PATCH 05/12] time: Add debugging checks to warn if we see
 delays
From: Paul Bolle <pebolle@tiscali.nl>
To: John Stultz <john.stultz@linaro.org>
Cc: lkml <linux-kernel@vger.kernel.org>, Dave Jones <davej@codemonkey.org.uk>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Richard Cochran <richardcochran@gmail.com>,
        Prarit Bhargava <prarit@redhat.com>,
        Stephen Boyd <sboyd@codeaurora.org>, Ingo Molnar <mingo@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>
Date: Sat, 07 Mar 2015 10:22:36 +0100
In-Reply-To: <1425696603-16878-6-git-send-email-john.stultz@linaro.org>
References: <1425696603-16878-1-git-send-email-john.stultz@linaro.org>
	 <1425696603-16878-6-git-send-email-john.stultz@linaro.org>
Content-Type: text/plain; charset="UTF-8"
X-Mailer: Evolution 3.10.4 (3.10.4-4.fc20) 
Mime-Version: 1.0
Content-Transfer-Encoding: 7bit
X-OriginalArrivalTime: 07 Mar 2015 09:22:36.0919 (UTC) FILETIME=[40445070:01D058B8]
X-RcptDomain: vger.kernel.org
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Fri, 2015-03-06 at 18:49 -0800, John Stultz wrote:
> +config DEBUG_TIMEKEEPING
> +	bool "Enable extra timekeeping sanity checking"
> +	help
> +	  This option will enable additional timekeeping sanity checks
> +	  which may be helpful when diagnoising issues where timekeeping

diagnoise, verb:
	to diagnose a problem by generating a large amount of data
	see also: printk debugging

> +	  problems are suspected.
> +
> +	  This may include checks in the timekeeping hotpaths, so this
> +	  option may have a performance impact to some workloads.
> +
> +	  If unsure, say N.
> +



Paul Bolle