From patchwork Sat Oct 10 08:44:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tianxianting X-Patchwork-Id: 1380032 X-Patchwork-Delegate: bpf@iogearbox.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=h3c.com Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4C7jNj6KLVz9sS8 for ; Sat, 10 Oct 2020 22:28:05 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728686AbgJJLZA (ORCPT ); Sat, 10 Oct 2020 07:25:00 -0400 Received: from smtp.h3c.com ([60.191.123.50]:52168 "EHLO h3cspam02-ex.h3c.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729246AbgJJKWg (ORCPT ); Sat, 10 Oct 2020 06:22:36 -0400 Received: from h3cspam02-ex.h3c.com (localhost [127.0.0.2] (may be forged)) by h3cspam02-ex.h3c.com with ESMTP id 09A8wqlb054679 for ; Sat, 10 Oct 2020 16:58:52 +0800 (GMT-8) (envelope-from tian.xianting@h3c.com) Received: from DAG2EX03-BASE.srv.huawei-3com.com ([10.8.0.66]) by h3cspam02-ex.h3c.com with ESMTPS id 09A8s6nc045991 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Sat, 10 Oct 2020 16:54:06 +0800 (GMT-8) (envelope-from tian.xianting@h3c.com) Received: from localhost.localdomain (10.99.212.201) by DAG2EX03-BASE.srv.huawei-3com.com (10.8.0.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Sat, 10 Oct 2020 16:54:09 +0800 From: Xianting Tian To: , , , , , , , , , , CC: , , , Xianting Tian Subject: [PATCH] bpf: Avoid allocing memory on memoryless numa node Date: Sat, 10 Oct 2020 16:44:17 +0800 Message-ID: <20201010084417.5400-1-tian.xianting@h3c.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Originating-IP: [10.99.212.201] X-ClientProxiedBy: BJSMTP02-EX.srv.huawei-3com.com (10.63.20.133) To DAG2EX03-BASE.srv.huawei-3com.com (10.8.0.66) X-DNSRBL: X-MAIL: h3cspam02-ex.h3c.com 09A8s6nc045991 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org In architecture like powerpc, we can have cpus without any local memory attached to it. In such cases the node does not have real memory. Use local_memory_node(), which is guaranteed to have memory. local_memory_node is a noop in other architectures that does not support memoryless nodes. Signed-off-by: Xianting Tian --- kernel/bpf/cpumap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/bpf/cpumap.c b/kernel/bpf/cpumap.c index 6386b7bb9..2c885c00a 100644 --- a/kernel/bpf/cpumap.c +++ b/kernel/bpf/cpumap.c @@ -423,7 +423,7 @@ __cpu_map_entry_alloc(struct bpf_cpumap_val *value, u32 cpu, int map_id) struct xdp_bulk_queue *bq; /* Have map->numa_node, but choose node of redirect target CPU */ - numa = cpu_to_node(cpu); + numa = local_memory_node(cpu_to_node(cpu)); rcpu = kzalloc_node(sizeof(*rcpu), gfp, numa); if (!rcpu)