From patchwork Sat Aug 31 05:58:18 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yunsheng Lin X-Patchwork-Id: 11124791 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 BCB051800 for ; Sat, 31 Aug 2019 06:01:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A5D9123697 for ; Sat, 31 Aug 2019 06:01:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725899AbfHaGAs (ORCPT ); Sat, 31 Aug 2019 02:00:48 -0400 Received: from szxga07-in.huawei.com ([45.249.212.35]:49362 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726135AbfHaGAs (ORCPT ); Sat, 31 Aug 2019 02:00:48 -0400 Received: from DGGEMS404-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id DFA271D7914D6E80DE7C; Sat, 31 Aug 2019 14:00:41 +0800 (CST) Received: from localhost.localdomain (10.67.212.75) by DGGEMS404-HUB.china.huawei.com (10.3.19.204) with Microsoft SMTP Server id 14.3.439.0; Sat, 31 Aug 2019 14:00:35 +0800 From: Yunsheng Lin To: , , , , , , , , , , , , , , , , , , , , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v2 4/9] powerpc: numa: check the node id consistently for powerpc Date: Sat, 31 Aug 2019 13:58:18 +0800 Message-ID: <1567231103-13237-5-git-send-email-linyunsheng@huawei.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1567231103-13237-1-git-send-email-linyunsheng@huawei.com> References: <1567231103-13237-1-git-send-email-linyunsheng@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.212.75] X-CFilter-Loop: Reflected Sender: linux-mips-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.org According to Section 6.2.14 from ACPI spec 6.3 [1], the setting of proximity domain is optional, as below: This optional object is used to describe proximity domain associations within a machine. _PXM evaluates to an integer that identifies a device as belonging to a Proximity Domain defined in the System Resource Affinity Table (SRAT). This patch checks node id with the below case before returning node_to_cpumask_map[node]: 1. if node_id >= nr_node_ids, return cpu_none_mask 2. if node_id < 0, return cpu_online_mask 3. if node_to_cpumask_map[node_id] is NULL, return cpu_online_mask [1] https://uefi.org/sites/default/files/resources/ACPI_6_3_final_Jan30.pdf Signed-off-by: Yunsheng Lin --- arch/powerpc/include/asm/topology.h | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/arch/powerpc/include/asm/topology.h b/arch/powerpc/include/asm/topology.h index 2f7e1ea..217dc9b 100644 --- a/arch/powerpc/include/asm/topology.h +++ b/arch/powerpc/include/asm/topology.h @@ -17,9 +17,16 @@ struct device_node; #include -#define cpumask_of_node(node) ((node) == -1 ? \ - cpu_all_mask : \ - node_to_cpumask_map[node]) +static inline const struct cpumask *cpumask_of_node(int node) +{ + if (node >= nr_node_ids) + return cpu_none_mask; + + if (node < 0 || !node_to_cpumask_map[node]) + return cpu_online_mask; + + return node_to_cpumask_map[node]; +} struct pci_bus; #ifdef CONFIG_PCI