From patchwork Wed Apr 20 01:40:37 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Daney X-Patchwork-Id: 8884721 Return-Path: X-Original-To: patchwork-linux-acpi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 5FB1DBF29F for ; Wed, 20 Apr 2016 01:42:33 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 38E86202D1 for ; Wed, 20 Apr 2016 01:42:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DBAE12026F for ; Wed, 20 Apr 2016 01:42:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932810AbcDTBmK (ORCPT ); Tue, 19 Apr 2016 21:42:10 -0400 Received: from mail-pa0-f41.google.com ([209.85.220.41]:35205 "EHLO mail-pa0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932671AbcDTBlC (ORCPT ); Tue, 19 Apr 2016 21:41:02 -0400 Received: by mail-pa0-f41.google.com with SMTP id fs9so12255528pac.2; Tue, 19 Apr 2016 18:41:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=ctcTgySnuMEH2ItnD+aa0AfrNdJBc9RhlOdajFLp14k=; b=kYq7zPfFdHXgrNT3flMLMhPfBKcUC3PpZTjeuEMibWaGzPMFPoJmsOvpGGX8zFej5C IXuegThntFwrrylEEC3GbkIG5yQ//qytjNYCvsjHWu+KBKKhT99zjgRdzRTnU6OjQ7Sn 6IJBtvfV0idfq/FZZ4fPAP/9uVLB7ugGQpa4w5KjfDaSr//looXzsKPa/8VrGvvzzGAH Gyl7T/BFEmwF836DKRSAbDh4wHwf0CfgrEtqkT3iOcJjbo576K/4qfyz2RFyHNnVK6HV oCTIXhAUCeHQfPIz5BHifbYK2N3ocUUarG8LYarMBTBY7G+MopA2PD4mx+0QhtirPlyC 7bZQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=ctcTgySnuMEH2ItnD+aa0AfrNdJBc9RhlOdajFLp14k=; b=HerWxEvBE6iXKHq5e3tCISsWJWzirsMRtjYNDyoPkFUVL5oeCWOW1tn0FYAGb+2Cgm 2v15en2RUZ0HTHEWiw2YYXZOuw7UCjitlQWhCjqqdGINM0sWVQ0SC1HMdLj0eqpcagjO UfC/eDLB4DLydhh3lRwQLrf8kn72BFJUccFQ7Eko0jmsredEp2AhcniybZEaMXbsNfew 0mrJo+LSkxfoMAqAqxv1hHOx7vkiLWrlPrJUCzSqe2qKSGpkuxA2YR6FkfsmprvqeE++ YQ/PxzCpJ3H/Xyk11znigNASp8CEpHef9NDFYZUM9IOq3NHjttrrjTWkDDUxKglc8hy9 UODQ== X-Gm-Message-State: AOPr4FVZk14XkH6gDZy3Lf6OL1YLc4ZcBbxQSFDtliE7NjRUhx3TLCgsrzHh2vlbxB+yrw== X-Received: by 10.66.235.9 with SMTP id ui9mr8544663pac.135.1461116461601; Tue, 19 Apr 2016 18:41:01 -0700 (PDT) Received: from dl.caveonetworks.com ([64.2.3.194]) by smtp.gmail.com with ESMTPSA id l81sm93659240pfj.21.2016.04.19.18.40.50 (version=TLS1 cipher=AES128-SHA bits=128/128); Tue, 19 Apr 2016 18:40:52 -0700 (PDT) Received: from dl.caveonetworks.com (localhost.localdomain [127.0.0.1]) by dl.caveonetworks.com (8.14.5/8.14.5) with ESMTP id u3K1ensu023088; Tue, 19 Apr 2016 18:40:49 -0700 Received: (from ddaney@localhost) by dl.caveonetworks.com (8.14.5/8.14.5/Submit) id u3K1enDM023087; Tue, 19 Apr 2016 18:40:49 -0700 From: David Daney To: Will Deacon , linux-arm-kernel@lists.infradead.org, Mark Rutland , Catalin Marinas , Tony Luck , Fenghua Yu , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , x86@kernel.org, "Rafael J. Wysocki" , Len Brown , Rob Herring , Frank Rowand , Grant Likely , Robert Moore , Lv Zheng , Hanjun Guo , Marc Zyngier , linux-ia64@vger.kernel.org, linux-acpi@vger.kernel.org, devel@acpica.org Cc: linux-kernel@vger.kernel.org, Robert Richter , Ganapatrao Kulkarni , David Daney Subject: [PATCH v5 12/14] arm64, acpi, numa: NUMA support based on SRAT and SLIT Date: Tue, 19 Apr 2016 18:40:37 -0700 Message-Id: <1461116439-22991-13-git-send-email-ddaney.cavm@gmail.com> X-Mailer: git-send-email 1.7.11.7 In-Reply-To: <1461116439-22991-1-git-send-email-ddaney.cavm@gmail.com> References: <1461116439-22991-1-git-send-email-ddaney.cavm@gmail.com> Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Spam-Status: No, score=-7.8 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Hanjun Guo Introduce a new file to hold ACPI based NUMA information parsing from SRAT and SLIT. SRAT includes the CPU ACPI ID to Proximity Domain mappings and memory ranges to Proximity Domain mapping. SLIT has the information of inter node distances(relative number for access latency). Signed-off-by: Hanjun Guo Signed-off-by: Ganapatrao Kulkarni [rrichter@cavium.com Reworked for numa v10 series ] Signed-off-by: Robert Richter [david.daney@cavium.com reorderd and combinded with other patches in Hanjun Guo's original set] Signed-off-by: David Daney --- arch/arm64/include/asm/acpi.h | 8 +++ arch/arm64/include/asm/numa.h | 2 + arch/arm64/kernel/Makefile | 1 + arch/arm64/kernel/acpi_numa.c | 149 ++++++++++++++++++++++++++++++++++++++++++ arch/arm64/kernel/smp.c | 2 + arch/arm64/mm/numa.c | 5 +- 6 files changed, 166 insertions(+), 1 deletion(-) create mode 100644 arch/arm64/kernel/acpi_numa.c diff --git a/arch/arm64/include/asm/acpi.h b/arch/arm64/include/asm/acpi.h index aee323b..4b13ecd 100644 --- a/arch/arm64/include/asm/acpi.h +++ b/arch/arm64/include/asm/acpi.h @@ -113,4 +113,12 @@ static inline const char *acpi_get_enable_method(int cpu) pgprot_t arch_apei_get_mem_attribute(phys_addr_t addr); #endif +#ifdef CONFIG_ACPI_NUMA +int arm64_acpi_numa_init(void); +int acpi_numa_get_nid(unsigned int cpu, u64 hwid); +#else +static inline int arm64_acpi_numa_init(void) { return -ENOSYS; } +static inline int acpi_numa_get_nid(unsigned int cpu, u64 hwid) { return NUMA_NO_NODE; } +#endif /* CONFIG_ACPI_NUMA */ + #endif /*_ASM_ACPI_H*/ diff --git a/arch/arm64/include/asm/numa.h b/arch/arm64/include/asm/numa.h index e9b4f29..600887e 100644 --- a/arch/arm64/include/asm/numa.h +++ b/arch/arm64/include/asm/numa.h @@ -5,6 +5,8 @@ #ifdef CONFIG_NUMA +#define NR_NODE_MEMBLKS (MAX_NUMNODES * 2) + /* currently, arm64 implements flat NUMA topology */ #define parent_node(node) (node) diff --git a/arch/arm64/kernel/Makefile b/arch/arm64/kernel/Makefile index 3793003..69569c6 100644 --- a/arch/arm64/kernel/Makefile +++ b/arch/arm64/kernel/Makefile @@ -42,6 +42,7 @@ arm64-obj-$(CONFIG_EFI) += efi.o efi-entry.stub.o arm64-obj-$(CONFIG_PCI) += pci.o arm64-obj-$(CONFIG_ARMV8_DEPRECATED) += armv8_deprecated.o arm64-obj-$(CONFIG_ACPI) += acpi.o +arm64-obj-$(CONFIG_ACPI_NUMA) += acpi_numa.o arm64-obj-$(CONFIG_ARM64_ACPI_PARKING_PROTOCOL) += acpi_parking_protocol.o arm64-obj-$(CONFIG_PARAVIRT) += paravirt.o arm64-obj-$(CONFIG_RANDOMIZE_BASE) += kaslr.o diff --git a/arch/arm64/kernel/acpi_numa.c b/arch/arm64/kernel/acpi_numa.c new file mode 100644 index 0000000..fd72070 --- /dev/null +++ b/arch/arm64/kernel/acpi_numa.c @@ -0,0 +1,149 @@ +/* + * ACPI 5.1 based NUMA setup for ARM64 + * Lots of code was borrowed from arch/x86/mm/srat.c + * + * Copyright 2004 Andi Kleen, SuSE Labs. + * Copyright (C) 2013-2016, Linaro Ltd. + * Author: Hanjun Guo + * + * Reads the ACPI SRAT table to figure out what memory belongs to which CPUs. + * + * Called from acpi_numa_init while reading the SRAT and SLIT tables. + * Assumes all memory regions belonging to a single proximity domain + * are in one chunk. Holes between them will be included in the node. + */ + +#define pr_fmt(fmt) "ACPI: NUMA: " fmt + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +static int cpus_in_srat; + +struct __node_cpu_hwid { + u32 node_id; /* logical node containing this CPU */ + u64 cpu_hwid; /* MPIDR for this CPU */ +}; + +static struct __node_cpu_hwid early_node_cpu_hwid[NR_CPUS] = { +[0 ... NR_CPUS - 1] = {NUMA_NO_NODE, PHYS_CPUID_INVALID} }; + +int acpi_numa_get_nid(unsigned int cpu, u64 hwid) +{ + int i; + + for (i = 0; i < cpus_in_srat; i++) { + if (hwid == early_node_cpu_hwid[i].cpu_hwid) + return early_node_cpu_hwid[i].node_id; + } + + return NUMA_NO_NODE; +} + +static int __init get_mpidr_in_madt(int acpi_id, u64 *mpidr) +{ + unsigned long madt_end, entry; + struct acpi_table_madt *madt; + acpi_size tbl_size; + + if (ACPI_FAILURE(acpi_get_table_with_size(ACPI_SIG_MADT, 0, + (struct acpi_table_header **)&madt, &tbl_size))) + return -ENODEV; + + entry = (unsigned long)madt; + madt_end = entry + madt->header.length; + + /* Parse all entries looking for a match. */ + entry += sizeof(struct acpi_table_madt); + while (entry + sizeof(struct acpi_subtable_header) < madt_end) { + struct acpi_subtable_header *header = + (struct acpi_subtable_header *)entry; + + if (header->type == ACPI_MADT_TYPE_GENERIC_INTERRUPT) { + struct acpi_madt_generic_interrupt *gicc = + container_of(header, + struct acpi_madt_generic_interrupt, header); + + if ((gicc->flags & ACPI_MADT_ENABLED) && + (gicc->uid == acpi_id)) { + *mpidr = gicc->arm_mpidr; + early_acpi_os_unmap_memory(madt, tbl_size); + return 0; + } + } + entry += header->length; + } + + early_acpi_os_unmap_memory(madt, tbl_size); + return -ENODEV; +} + +/* Callback for Proximity Domain -> ACPI processor UID mapping */ +void __init acpi_numa_gicc_affinity_init(struct acpi_srat_gicc_affinity *pa) +{ + int pxm, node; + u64 mpidr; + + if (srat_disabled()) + return; + + if (pa->header.length < sizeof(struct acpi_srat_gicc_affinity)) { + pr_err("SRAT: Invalid SRAT header length: %d\n", + pa->header.length); + bad_srat(); + return; + } + + if (!(pa->flags & ACPI_SRAT_GICC_ENABLED)) + return; + + if (cpus_in_srat >= NR_CPUS) { + pr_warn_once("SRAT: cpu_to_node_map[%d] is too small, may not be able to use all cpus\n", + NR_CPUS); + return; + } + + pxm = pa->proximity_domain; + node = acpi_map_pxm_to_node(pxm); + + if (node == NUMA_NO_NODE || node >= MAX_NUMNODES) { + pr_err("SRAT: Too many proximity domains %d\n", pxm); + bad_srat(); + return; + } + + if (get_mpidr_in_madt(pa->acpi_processor_uid, &mpidr)) { + pr_err("SRAT: PXM %d with ACPI ID %d has no valid MPIDR in MADT\n", + pxm, pa->acpi_processor_uid); + bad_srat(); + return; + } + + early_node_cpu_hwid[cpus_in_srat].node_id = node; + early_node_cpu_hwid[cpus_in_srat].cpu_hwid = mpidr; + node_set(node, numa_nodes_parsed); + cpus_in_srat++; + pr_info("SRAT: PXM %d -> MPIDR 0x%Lx -> Node %d cpu %d\n", + pxm, mpidr, node, cpus_in_srat); +} + +int __init arm64_acpi_numa_init(void) +{ + int ret; + + ret = acpi_numa_init(); + if (ret) + return ret; + + return srat_disabled() ? -EINVAL : 0; +} diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c index bebc4c6..6c7ef8f 100644 --- a/arch/arm64/kernel/smp.c +++ b/arch/arm64/kernel/smp.c @@ -524,6 +524,8 @@ acpi_map_gic_cpu_interface(struct acpi_madt_generic_interrupt *processor) */ acpi_set_mailbox_entry(cpu_count, processor); + early_map_cpu_to_node(cpu_count, acpi_numa_get_nid(cpu_count, hwid)); + cpu_count++; } diff --git a/arch/arm64/mm/numa.c b/arch/arm64/mm/numa.c index 6cb03f9..fc15186 100644 --- a/arch/arm64/mm/numa.c +++ b/arch/arm64/mm/numa.c @@ -17,6 +17,7 @@ * along with this program. If not, see . */ +#include #include #include #include @@ -388,7 +389,9 @@ static int __init dummy_numa_init(void) void __init arm64_numa_init(void) { if (!numa_off) { - if (!numa_init(of_numa_init)) + if (!acpi_disabled && !numa_init(arm64_acpi_numa_init)) + return; + if (acpi_disabled && !numa_init(of_numa_init)) return; }