From patchwork Sun Sep 25 18:36:55 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Reza Arbab X-Patchwork-Id: 674663 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3shwq453KLz9s5w for ; Mon, 26 Sep 2016 04:38:56 +1000 (AEST) Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 3shwq439skzDrR5 for ; Mon, 26 Sep 2016 04:38:56 +1000 (AEST) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3shwn262QVzDrLr for ; Mon, 26 Sep 2016 04:37:09 +1000 (AEST) Received: from pps.filterd (m0098416.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.17/8.16.0.17) with SMTP id u8PIXJ62084677 for ; Sun, 25 Sep 2016 14:37:06 -0400 Received: from e31.co.us.ibm.com (e31.co.us.ibm.com [32.97.110.149]) by mx0b-001b2d01.pphosted.com with ESMTP id 25p6qs3vhn-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Sun, 25 Sep 2016 14:37:06 -0400 Received: from localhost by e31.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Sun, 25 Sep 2016 12:37:05 -0600 Received: from d03dlp02.boulder.ibm.com (9.17.202.178) by e31.co.us.ibm.com (192.168.1.131) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Sun, 25 Sep 2016 12:37:01 -0600 Received: from b03cxnp07028.gho.boulder.ibm.com (b03cxnp07028.gho.boulder.ibm.com [9.17.130.15]) by d03dlp02.boulder.ibm.com (Postfix) with ESMTP id 55A753E40041; Sun, 25 Sep 2016 12:37:01 -0600 (MDT) Received: from b03ledav005.gho.boulder.ibm.com (b03ledav005.gho.boulder.ibm.com [9.17.130.236]) by b03cxnp07028.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u8PIb1qx13238694; Sun, 25 Sep 2016 11:37:01 -0700 Received: from localhost (unknown [127.0.0.1]) by IMSVA (Postfix) with SMTP id 36FFEBE039; Sun, 25 Sep 2016 12:37:01 -0600 (MDT) X-IMSS-HAND-OFF-DIRECTIVE: 127.0.0.1:10026 Received: from arbab-laptop.localdomain (unknown [9.85.160.160]) by b03ledav005.gho.boulder.ibm.com (Postfix) with ESMTP id 99BADBE039; Sun, 25 Sep 2016 12:36:58 -0600 (MDT) Received: by arbab-laptop.localdomain (Postfix, from userid 152845) id CBAA4460711; Sun, 25 Sep 2016 13:36:56 -0500 (CDT) From: Reza Arbab To: Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , Rob Herring , Frank Rowand , Jonathan Corbet , Andrew Morton Subject: [PATCH v3 4/5] powerpc/mm: restore top-down allocation when using movable_node Date: Sun, 25 Sep 2016 13:36:55 -0500 X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1474828616-16608-1-git-send-email-arbab@linux.vnet.ibm.com> References: <1474828616-16608-1-git-send-email-arbab@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 X-Content-Scanned: Fidelis XPS MAILER x-cbid: 16092518-8235-0000-0000-00000945E0E4 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00005813; HX=3.00000240; KW=3.00000007; PH=3.00000004; SC=3.00000185; SDB=6.00761240; UDB=6.00362465; IPR=6.00536057; BA=6.00004754; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00012779; XFM=3.00000011; UTC=2016-09-25 18:37:04 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 16092518-8236-0000-0000-00003522B11E Message-Id: <1474828616-16608-5-git-send-email-arbab@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2016-09-25_10:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1609020000 definitions=main-1609250356 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Stewart Smith , devicetree@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Alistair Popple , "Aneesh Kumar K.V" , Bharata B Rao , Nathan Fontenot , linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" At boot, the movable_node option sets bottom-up memblock allocation. This reduces the chance that, in the window before movable memory has been identified, an allocation for the kernel might come from a movable node. By going bottom-up, early allocations will most likely come from the same node as the kernel image, which is necessarily in a nonmovable node. Then, once any known hotplug memory has been marked, allocation can be reset back to top-down. On x86, this is done in numa_init(). This patch does the same on power, in numa initmem_init(). Signed-off-by: Reza Arbab --- arch/powerpc/mm/numa.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index d7ac419..fdf1e69 100644 --- a/arch/powerpc/mm/numa.c +++ b/arch/powerpc/mm/numa.c @@ -945,6 +945,9 @@ void __init initmem_init(void) max_low_pfn = memblock_end_of_DRAM() >> PAGE_SHIFT; max_pfn = max_low_pfn; + /* bottom-up allocation may have been set by movable_node */ + memblock_set_bottom_up(false); + if (parse_numa_properties()) setup_nonnuma(); else