From patchwork Thu Sep 10 09:13:39 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 11767237 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 76530698 for ; Thu, 10 Sep 2020 09:16:18 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3AEDE207DE for ; Thu, 10 Sep 2020 09:16:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="ggBtz7HK" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3AEDE207DE Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kGIfL-0007QW-2P; Thu, 10 Sep 2020 09:14:51 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kGIfJ-0007Pp-PN for xen-devel@lists.xenproject.org; Thu, 10 Sep 2020 09:14:49 +0000 X-Inumbo-ID: 0e4b17e5-7d6c-4499-9f44-67b897e8252e Received: from us-smtp-delivery-1.mimecast.com (unknown [207.211.31.120]) by us1-rack-iad1.inumbo.com (Halon) with ESMTP id 0e4b17e5-7d6c-4499-9f44-67b897e8252e; Thu, 10 Sep 2020 09:14:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1599729288; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=pcPWZv9PYAHyw7ygKg8TV8AW3ZEfFOjouUb95Y7pmVU=; b=ggBtz7HKaK9A03rUvqwACI3V5StcqeAQSdpO36PoTftsPskhPBdgrEyTOhwaQYM1OKE3wA pR898mI2ALQhwhlu/seAQIRFflXS0KhWRYb2rfmaeXXrFfuPiVz9bwjihsnA5iuft7R37q qljDlcUOqpd+I/LtpwnSONGX5aVM+rQ= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-97-F3s5MUEMNf-YywNaYeYo4Q-1; Thu, 10 Sep 2020 05:14:44 -0400 X-MC-Unique: F3s5MUEMNf-YywNaYeYo4Q-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id E63CB18B9F00; Thu, 10 Sep 2020 09:14:41 +0000 (UTC) Received: from t480s.redhat.com (ovpn-113-88.ams2.redhat.com [10.36.113.88]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3BE081A8EC; Thu, 10 Sep 2020 09:14:38 +0000 (UTC) From: David Hildenbrand To: 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 , David Hildenbrand , Juergen Gross , Andrew Morton , Michal Hocko , Boris Ostrovsky , Stefano Stabellini , =?utf-8?q?Roger_Pau_Monn=C3=A9?= , Julien Grall , Pankaj Gupta , Baoquan He , Wei Yang Subject: [PATCH v3 6/7] xen/balloon: try to merge system ram resources Date: Thu, 10 Sep 2020 11:13:39 +0200 Message-Id: <20200910091340.8654-7-david@redhat.com> In-Reply-To: <20200910091340.8654-1-david@redhat.com> References: <20200910091340.8654-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" 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. Reviewed-by: Juergen Gross 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 --- 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 9f40a294d398d..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, MHP_NONE); + rc = add_memory_resource(nid, resource, MEMHP_MERGE_RESOURCE); unlock_device_hotplug(); mutex_lock(&balloon_mutex);