From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f50.google.com (mail-pa0-f50.google.com [209.85.220.50]) by kanga.kvack.org (Postfix) with ESMTP id A9DD26B0035 for ; Fri, 18 Jul 2014 08:40:45 -0400 (EDT) Received: by mail-pa0-f50.google.com with SMTP id et14so5415256pad.9 for ; Fri, 18 Jul 2014 05:40:45 -0700 (PDT) Received: from mho-02-ewr.mailhop.org (mho-02-ewr.mailhop.org. [204.13.248.72]) by mx.google.com with ESMTPS id n107si10283533qgn.45.2014.07.18.05.40.44 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Fri, 18 Jul 2014 05:40:44 -0700 (PDT) Date: Fri, 18 Jul 2014 08:40:38 -0400 From: Jason Cooper Subject: Re: [RFC Patch V1 21/30] mm, irqchip: Use cpu_to_mem()/numa_mem_id() to support memoryless node Message-ID: <20140718124038.GE24496@titan.lakedaemon.net> References: <1405064267-11678-1-git-send-email-jiang.liu@linux.intel.com> <1405064267-11678-22-git-send-email-jiang.liu@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1405064267-11678-22-git-send-email-jiang.liu@linux.intel.com> Sender: owner-linux-mm@kvack.org List-ID: To: Jiang Liu Cc: Andrew Morton , Mel Gorman , David Rientjes , Mike Galbraith , Peter Zijlstra , "Rafael J . Wysocki" , Thomas Gleixner , Alexander Shiyan , Tony Luck , linux-mm@kvack.org, linux-hotplug@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org On Fri, Jul 11, 2014 at 03:37:38PM +0800, Jiang Liu wrote: > When CONFIG_HAVE_MEMORYLESS_NODES is enabled, cpu_to_node()/numa_node_id() > may return a node without memory, and later cause system failure/panic > when calling kmalloc_node() and friends with returned node id. > So use cpu_to_mem()/numa_mem_id() instead to get the nearest node with > memory for the/current cpu. > > If CONFIG_HAVE_MEMORYLESS_NODES is disabled, cpu_to_mem()/numa_mem_id() > is the same as cpu_to_node()/numa_node_id(). > > Signed-off-by: Jiang Liu > --- > drivers/irqchip/irq-clps711x.c | 2 +- > drivers/irqchip/irq-gic.c | 2 +- > 2 files changed, 2 insertions(+), 2 deletions(-) Do you have anything depending on this? Can apply it to irqchip? If you need to keep it with other changes, Acked-by: Jason Cooper But please do let me know if I can take it. thx, Jason. -- 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