From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jason Cooper Date: Fri, 18 Jul 2014 12:40:38 +0000 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> List-Id: References: <1405064267-11678-1-git-send-email-jiang.liu@linux.intel.com> <1405064267-11678-22-git-send-email-jiang.liu@linux.intel.com> In-Reply-To: <1405064267-11678-22-git-send-email-jiang.liu@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit 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.