Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757896Ab3GWP2m (ORCPT ); Tue, 23 Jul 2013 11:28:42 -0400 Received: from mga14.intel.com ([143.182.124.37]:61397 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757467Ab3GWP2l (ORCPT ); Tue, 23 Jul 2013 11:28:41 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.89,728,1367996400"; d="scan'208";a="369717962" Message-ID: <51EEA11D.4030007@intel.com> Date: Tue, 23 Jul 2013 08:28:29 -0700 From: Dave Hansen User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130623 Thunderbird/17.0.7 MIME-Version: 1.0 To: KY Srinivasan CC: Michal Hocko , "gregkh@linuxfoundation.org" , "linux-kernel@vger.kernel.org" , "devel@linuxdriverproject.org" , "olaf@aepfle.de" , "apw@canonical.com" , "andi@firstfloor.org" , "akpm@linux-foundation.org" , "linux-mm@kvack.org" , "kamezawa.hiroyuki@gmail.com" , "hannes@cmpxchg.org" , "yinghan@google.com" , "jasowang@redhat.com" , "kay@vrfy.org" Subject: Re: [PATCH 1/1] Drivers: base: memory: Export symbols for onlining memory blocks References: <1374261785-1615-1-git-send-email-kys@microsoft.com> <20130722123716.GB24400@dhcp22.suse.cz> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 639 Lines: 13 On 07/23/2013 07:52 AM, KY Srinivasan wrote: > The current scheme of involving user > level code to close this loop obviously does not perform well under high memory pressure. Adding memory usually requires allocating some large, contiguous areas of memory for use as mem_map[] and other VM structures. That's really hard to do under heavy memory pressure. How are you accomplishing this? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/