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 E77E1C433DF for ; Fri, 16 Oct 2020 02:46:07 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 50B9420EDD for ; Fri, 16 Oct 2020 02:46:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="GbWuowzh" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 50B9420EDD Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id CDBDA940032; Thu, 15 Oct 2020 22:46:06 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id CB3E3940007; Thu, 15 Oct 2020 22:46:06 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id BEEDE940032; Thu, 15 Oct 2020 22:46:06 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0153.hostedemail.com [216.40.44.153]) by kanga.kvack.org (Postfix) with ESMTP id 93163940007 for ; Thu, 15 Oct 2020 22:46:06 -0400 (EDT) Received: from smtpin03.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 313D5180AD807 for ; Fri, 16 Oct 2020 02:46:06 +0000 (UTC) X-FDA: 77376249132.03.linen51_270e8b527219 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin03.hostedemail.com (Postfix) with ESMTP id 11D7528A4E8 for ; Fri, 16 Oct 2020 02:46:06 +0000 (UTC) X-HE-Tag: linen51_270e8b527219 X-Filterd-Recvd-Size: 4928 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf47.hostedemail.com (Postfix) with ESMTP for ; Fri, 16 Oct 2020 02:46:05 +0000 (UTC) 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 7837920E65; Fri, 16 Oct 2020 02:46:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1602816364; bh=LXUnGw9gEmjTSM1jmb6juys2Dn2yGMJfIOB12p8mfD8=; h=Date:From:To:Subject:In-Reply-To:From; b=GbWuowzhOqDJWRNedHYyL1pqgE+p73xzZGpYY+B0BTqQTf99Ijaq5sxR4LlOlj2Fy g/0unvKr1AorqYDYVE+DGhyqGxje0tC4L1Ja/OJY4666ApvHp1+jASwu6/44tcbDof /f7X5HCQ0H2OzV8k64afqVBHYOybsKtFTN4dlPpg= Date: Thu, 15 Oct 2020 19:46:01 -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, linux-mm@kvack.org, 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: <20201016024601.NzhPf8AKd%akpm@linux-foundation.org> In-Reply-To: <20201015192732.f448da14e9854c7cb7299956@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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: =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); _