From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-14.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,NICE_REPLY_A, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DD236C433E2 for ; Wed, 9 Sep 2020 05:19:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A9AE821D47 for ; Wed, 9 Sep 2020 05:19:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725864AbgIIFTC (ORCPT ); Wed, 9 Sep 2020 01:19:02 -0400 Received: from mx2.suse.de ([195.135.220.15]:49176 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725772AbgIIFTC (ORCPT ); Wed, 9 Sep 2020 01:19:02 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id C8F73ACBA; Wed, 9 Sep 2020 05:19:00 +0000 (UTC) Subject: Re: [PATCH v2 6/7] xen/balloon: try to merge system ram resources To: David Hildenbrand , linux-kernel@vger.kernel.org Cc: virtualization@lists.linux-foundation.org, linux-mm@kvack.org, linux-hyperv@vger.kernel.org, xen-devel@lists.xenproject.org, linux-acpi@vger.kernel.org, linux-nvdimm@lists.01.org, linux-s390@vger.kernel.org, Andrew Morton , Michal Hocko , Boris Ostrovsky , Stefano Stabellini , =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= , Julien Grall , Pankaj Gupta , Baoquan He , Wei Yang References: <20200908201012.44168-1-david@redhat.com> <20200908201012.44168-7-david@redhat.com> From: =?UTF-8?B?SsO8cmdlbiBHcm/Dnw==?= Message-ID: <64d7a2ce-e3b5-3525-d977-76a4bb06e52d@suse.com> Date: Wed, 9 Sep 2020 07:18:59 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 MIME-Version: 1.0 In-Reply-To: <20200908201012.44168-7-david@redhat.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-hyperv-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-hyperv@vger.kernel.org On 08.09.20 22:10, David Hildenbrand wrote: > Let's try to merge system ram resources we add, to minimize the number > of resources in /proc/iomem. We don't care about the boundaries of > individual chunks we added. > > Cc: Andrew Morton > Cc: Michal Hocko > Cc: Boris Ostrovsky > Cc: Juergen Gross > Cc: Stefano Stabellini > Cc: Roger Pau Monné > Cc: Julien Grall > Cc: Pankaj Gupta > Cc: Baoquan He > Cc: Wei Yang > Signed-off-by: David Hildenbrand Reviewed-by: Juergen Gross Juergen > --- > drivers/xen/balloon.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c > index 7bac38764513d..b57b2067ecbfb 100644 > --- a/drivers/xen/balloon.c > +++ b/drivers/xen/balloon.c > @@ -331,7 +331,7 @@ static enum bp_state reserve_additional_memory(void) > mutex_unlock(&balloon_mutex); > /* add_memory_resource() requires the device_hotplug lock */ > lock_device_hotplug(); > - rc = add_memory_resource(nid, resource, 0); > + rc = add_memory_resource(nid, resource, MEMHP_MERGE_RESOURCE); > unlock_device_hotplug(); > mutex_lock(&balloon_mutex); > >