From patchwork Mon Nov 20 02:54:20 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henry Wang X-Patchwork-Id: 13460743 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 0B5E9C5ACB3 for ; Mon, 20 Nov 2023 02:55:25 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.636361.991795 (Exim 4.92) (envelope-from ) id 1r4uRN-000163-8P; Mon, 20 Nov 2023 02:55:13 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 636361.991795; Mon, 20 Nov 2023 02:55:13 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1r4uRN-00015m-4V; Mon, 20 Nov 2023 02:55:13 +0000 Received: by outflank-mailman (input) for mailman id 636361; Mon, 20 Nov 2023 02:55:12 +0000 Received: from se1-gles-sth1-in.inumbo.com ([159.253.27.254] helo=se1-gles-sth1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1r4uRM-00081B-0t for xen-devel@lists.xenproject.org; Mon, 20 Nov 2023 02:55:12 +0000 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by se1-gles-sth1.inumbo.com (Halon) with ESMTP id 38983935-8750-11ee-98df-6d05b1d4d9a1; Mon, 20 Nov 2023 03:55:11 +0100 (CET) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id E69BC1042; Sun, 19 Nov 2023 18:55:56 -0800 (PST) Received: from a015966.shanghai.arm.com (a015966.shanghai.arm.com [10.169.190.5]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 4E6503F6C4; Sun, 19 Nov 2023 18:55:08 -0800 (PST) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 38983935-8750-11ee-98df-6d05b1d4d9a1 From: Henry Wang To: xen-devel@lists.xenproject.org Cc: Wei Chen , Stefano Stabellini , Julien Grall , Bertrand Marquis , Michal Orzel , Volodymyr Babchuk , Henry Wang Subject: [PATCH v6 06/17] xen/arm: Add boot and secondary CPU to NUMA system Date: Mon, 20 Nov 2023 10:54:20 +0800 Message-Id: <20231120025431.14845-7-Henry.Wang@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231120025431.14845-1-Henry.Wang@arm.com> References: <20231120025431.14845-1-Henry.Wang@arm.com> MIME-Version: 1.0 From: Wei Chen In this patch, we make NUMA node online and add cpu to its NUMA node. This will make NUMA-aware components have NUMA affinity data to support their work. To keep the mostly the same behavior of x86, we use numa_detect_cpu_node to online node. The difference is that, we have prepared cpu_to_node in dt_smp_init_cpus, so we don't need to setup cpu_to_node in numa_detect_cpu_node. Signed-off-by: Wei Chen Signed-off-by: Henry Wang --- v2 -> v6: - Rebase on top of staging without code changes. v1 -> v2: - Use unsigned int instead of int for cpu id. - Use static inline for stub to do type check. --- xen/arch/arm/include/asm/numa.h | 9 +++++++++ xen/arch/arm/numa.c | 10 ++++++++++ xen/arch/arm/setup.c | 5 +++++ 3 files changed, 24 insertions(+) diff --git a/xen/arch/arm/include/asm/numa.h b/xen/arch/arm/include/asm/numa.h index 97d4a67dea..b04ace26db 100644 --- a/xen/arch/arm/include/asm/numa.h +++ b/xen/arch/arm/include/asm/numa.h @@ -35,6 +35,7 @@ typedef u8 nodeid_t; extern bool numa_disabled(void); extern void numa_set_distance(nodeid_t from, nodeid_t to, unsigned int distance); +extern void numa_detect_cpu_node(unsigned int cpu); #else @@ -72,6 +73,14 @@ static inline void numa_set_node(unsigned int cpu, nodeid_t node) { } +static inline void numa_add_cpu(unsigned int cpu) +{ +} + +static inline void numa_detect_cpu_node(unsigned int cpu) +{ +} + #endif #define arch_want_default_dmazone() (false) diff --git a/xen/arch/arm/numa.c b/xen/arch/arm/numa.c index e9b2ec93bc..b5a87531f7 100644 --- a/xen/arch/arm/numa.c +++ b/xen/arch/arm/numa.c @@ -76,6 +76,16 @@ void __init numa_set_distance(nodeid_t from, nodeid_t to, node_distance_map[from][to] = distance; } +void numa_detect_cpu_node(unsigned int cpu) +{ + nodeid_t node = cpu_to_node[cpu]; + + if ( node == NUMA_NO_NODE ) + node = 0; + + node_set_online(node); +} + unsigned char __node_distance(nodeid_t from, nodeid_t to) { if ( from == to ) diff --git a/xen/arch/arm/setup.c b/xen/arch/arm/setup.c index 3f3a45719c..02bc887725 100644 --- a/xen/arch/arm/setup.c +++ b/xen/arch/arm/setup.c @@ -1208,6 +1208,11 @@ void __init start_xen(unsigned long boot_phys_offset, for_each_present_cpu ( i ) { + /* Detect and online node based on cpu_to_node[]. */ + numa_detect_cpu_node(i); + /* Set up node_to_cpumask based on cpu_to_node[]. */ + numa_add_cpu(i); + if ( (num_online_cpus() < nr_cpu_ids) && !cpu_online(i) ) { int ret = cpu_up(i);