From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx123.postini.com [74.125.245.123]) by kanga.kvack.org (Postfix) with SMTP id 810F96B0002 for ; Fri, 1 Mar 2013 05:23:57 -0500 (EST) Date: Fri, 1 Mar 2013 11:23:55 +0100 From: Michal Hocko Subject: Re: + mm-show_mem-suppress-page-counts-in-non-blockable-contexts.patch added to -mm tree Message-ID: <20130301102355.GC21443@dhcp22.suse.cz> References: <20130228231025.9F11A5A410E@corp2gmr1-2.hot.corp.google.com> <20130301095716.GA21443@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: owner-linux-mm@kvack.org List-ID: To: David Rientjes Cc: akpm@linux-foundation.org, mm-commits@vger.kernel.org, dave@linux.vnet.ibm.com, mgorman@suse.de, linux-mm@kvack.org, LKML On Fri 01-03-13 02:15:04, David Rientjes wrote: > On Fri, 1 Mar 2013, Michal Hocko wrote: > > > I have already asked about it in the original thread but didn't get any > > answer. How can we get a soft lockup when all implementations of show_mem > > call touch_nmi_watchdog? > > > > Feel free to do s/soft lockups/irqs being disabled for an extremely long > time/. OK, that sounds better. Sorry for being so persistent on this but soft lockups tend to be a real issue for distribution kernels with !CONFIG_PREEMPT so anything that fixes soft lockups raises a red flag. Acked-by: Michal Hocko -- Michal Hocko SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org