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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 9E55BC3A59F for ; Sat, 31 Aug 2019 06:00:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 792502377D for ; Sat, 31 Aug 2019 06:00:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727501AbfHaGA5 (ORCPT ); Sat, 31 Aug 2019 02:00:57 -0400 Received: from szxga04-in.huawei.com ([45.249.212.190]:6155 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726679AbfHaGAx (ORCPT ); Sat, 31 Aug 2019 02:00:53 -0400 Received: from DGGEMS404-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id 01665F323856A90C7C6B; Sat, 31 Aug 2019 14:00:47 +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 14:00:37 +0800 From: Yunsheng Lin To: , , , , , , , , , , , , , , , , , , , , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v2 9/9] mips: numa: check the node id consistently for mips loongson64 Date: Sat, 31 Aug 2019 13:58:23 +0800 Message-ID: <1567231103-13237-10-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 Content-Type: text/plain X-Originating-IP: [10.67.212.75] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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). Since mips loongson64 uses __node_data instead of node_to_cpumask_map, this patch checks node id with the below case before returning &__node_data[node]->cpumask: 1. if node_id >= MAX_NUMNODES, return cpu_none_mask 2. if node_id < 0, return cpu_online_mask 3. if hub_data(node) 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/mips/include/asm/mach-loongson64/topology.h | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/arch/mips/include/asm/mach-loongson64/topology.h b/arch/mips/include/asm/mach-loongson64/topology.h index 7ff819a..b19b983 100644 --- a/arch/mips/include/asm/mach-loongson64/topology.h +++ b/arch/mips/include/asm/mach-loongson64/topology.h @@ -5,7 +5,17 @@ #ifdef CONFIG_NUMA #define cpu_to_node(cpu) (cpu_logical_map(cpu) >> 2) -#define cpumask_of_node(node) (&__node_data[(node)]->cpumask) + +static inline const struct cpumask *cpumask_of_node(int node) +{ + if (node >= MAX_NUMNODES) + return cpu_none_mask; + + if (node < 0 || !__node_data[node]) + return cpu_online_mask; + + return &__node_data[node]->cpumask; +} struct pci_bus; extern int pcibus_to_node(struct pci_bus *); -- 2.8.1