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=-6.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 8EE92C433E7 for ; Fri, 16 Oct 2020 03:09:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3225F2145D for ; Fri, 16 Oct 2020 03:09:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1602817752; bh=LXUnGw9gEmjTSM1jmb6juys2Dn2yGMJfIOB12p8mfD8=; h=Date:From:To:Subject:In-Reply-To:Reply-To:List-ID:From; b=bquh+F8ZzkOB0o2Tjw74k/PD3qSeEenVcrbRwy+ReWDnUUEC5SV4Q12kDurPgTn9y EJ02wdKnZFKrY1GceP8x7rgxLl2X5+hoxeK86WN5+TDkSTunmk8k4ZukoJ6EMMlwvh g8ZnMFfPpk7pTsmQhjDOWSLweWgMlRpIrUjzRg/4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732263AbgJPDJL (ORCPT ); Thu, 15 Oct 2020 23:09:11 -0400 Received: from mail.kernel.org ([198.145.29.99]:46692 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726528AbgJPDJL (ORCPT ); Thu, 15 Oct 2020 23:09:11 -0400 Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A048520B1F; Fri, 16 Oct 2020 03:09:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1602817749; bh=LXUnGw9gEmjTSM1jmb6juys2Dn2yGMJfIOB12p8mfD8=; h=Date:From:To:Subject:In-Reply-To:From; b=N7tyTJ465K/BUFEJCTc3J+BSPz+/qx5meXbwxgPyrKcnv8p2YY2G+OLIw7S35lU7T p7RbW3rlH1T22hZgJ+ZXMrzFVRchlSLVtCBfiGner0qfRRrsBzb477FykxB9erOcUr 0MAD6bDE27poTvvme4n5JYLIvoZQ+QVvBnofPbT4= Date: Thu, 15 Oct 2020 20:09:07 -0700 From: Andrew Morton To: akpm@linux-foundation.org, anton@ozlabs.org, ardb@kernel.org, benh@kernel.crashing.org, bhe@redhat.com, boris.ostrovsky@oracle.com, borntraeger@de.ibm.com, dan.j.williams@intel.com, dave.jiang@intel.com, david@redhat.com, ebiederm@xmission.com, gor@linux.ibm.com, gregkh@linuxfoundation.org, haiyangz@microsoft.com, hca@linux.ibm.com, jasowang@redhat.com, jgg@ziepe.ca, jgross@suse.com, julien@xen.org, keescook@chromium.org, kernelfans@gmail.com, kys@microsoft.com, lenb@kernel.org, leobras.c@gmail.com, lpechacek@suse.cz, mhocko@suse.com, mm-commits@vger.kernel.org, mpe@ellerman.id.au, mst@redhat.com, nathanl@linux.ibm.com, oohall@gmail.com, pankaj.gupta.linux@gmail.com, paulus@samba.org, richardw.yang@linux.intel.com, rjw@rjwysocki.net, roger.pau@citrix.com, sstabellini@kernel.org, sthemmin@microsoft.com, tglx@linutronix.de, torvalds@linux-foundation.org, vishal.l.verma@intel.com, wei.liu@kernel.org Subject: [patch 076/156] hv_balloon: try to merge system ram resources Message-ID: <20201016030907.LS7vFFcTH%akpm@linux-foundation.org> In-Reply-To: <20201015194043.84cda0c1d6ca2a6847f2384a@linux-foundation.org> User-Agent: s-nail v14.8.16 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org =46rom: David Hildenbrand Subject: hv_balloon: try to merge system ram resources 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. Link: https://lkml.kernel.org/r/20200911103459.10306-9-david@redhat.com Signed-off-by: David Hildenbrand Reviewed-by: Wei Liu Cc: Michal Hocko Cc: "K. Y. Srinivasan" Cc: Haiyang Zhang Cc: Stephen Hemminger Cc: Wei Liu Cc: Pankaj Gupta Cc: Baoquan He Cc: Wei Yang Cc: Anton Blanchard Cc: Ard Biesheuvel Cc: Benjamin Herrenschmidt Cc: Boris Ostrovsky Cc: Christian Borntraeger Cc: Dan Williams Cc: Dave Jiang Cc: Eric Biederman Cc: Greg Kroah-Hartman Cc: Heiko Carstens Cc: Jason Gunthorpe Cc: Jason Wang Cc: Juergen Gross Cc: Julien Grall Cc: Kees Cook Cc: Len Brown Cc: Leonardo Bras Cc: Libor Pechacek Cc: Michael Ellerman Cc: "Michael S. Tsirkin" Cc: Nathan Lynch Cc: "Oliver O'Halloran" Cc: Paul Mackerras Cc: Pingfan Liu Cc: "Rafael J. Wysocki" Cc: Roger Pau Monn=C3=A9 Cc: Stefano Stabellini Cc: Thomas Gleixner Cc: Vasily Gorbik Cc: Vishal Verma Signed-off-by: Andrew Morton --- drivers/hv/hv_balloon.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/hv/hv_balloon.c~hv_balloon-try-to-merge-system-ram-resources +++ a/drivers/hv/hv_balloon.c @@ -726,7 +726,7 @@ static void hv_mem_hot_add(unsigned long =20 nid =3D memory_add_physaddr_to_nid(PFN_PHYS(start_pfn)); ret =3D add_memory(nid, PFN_PHYS((start_pfn)), - (HA_CHUNK << PAGE_SHIFT), MHP_NONE); + (HA_CHUNK << PAGE_SHIFT), MEMHP_MERGE_RESOURCE); =20 if (ret) { pr_err("hot_add memory failed error is %d\n", ret); _