Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933975AbbKSEZw (ORCPT ); Wed, 18 Nov 2015 23:25:52 -0500 Received: from cn.fujitsu.com ([59.151.112.132]:49119 "EHLO heian.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S933848AbbKSEZq (ORCPT ); Wed, 18 Nov 2015 23:25:46 -0500 X-IronPort-AV: E=Sophos;i="5.20,242,1444665600"; d="scan'208";a="611410" From: Tang Chen To: , , , , , , , , , , , , CC: , , , , , Gu Zheng Subject: [PATCH v3 5/5] x86, acpi, cpu-hotplug: Set persistent cpuid <-> nodeid mapping when booting. Date: Thu, 19 Nov 2015 12:22:15 +0800 Message-ID: <1447906935-31899-6-git-send-email-tangchen@cn.fujitsu.com> X-Mailer: git-send-email 1.9.3 In-Reply-To: <1447906935-31899-1-git-send-email-tangchen@cn.fujitsu.com> References: <1447906935-31899-1-git-send-email-tangchen@cn.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.167.226.71] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4794 Lines: 154 From: Gu Zheng This patch finishes step 4. This patch set the persistent cpuid <-> nodeid mapping for all enabled/disabled processors at boot time via an additional acpi namespace walk for processors. Signed-off-by: Gu Zheng Signed-off-by: Tang Chen --- arch/ia64/kernel/acpi.c | 2 +- arch/x86/kernel/acpi/boot.c | 2 +- drivers/acpi/bus.c | 3 ++ drivers/acpi/processor_core.c | 65 +++++++++++++++++++++++++++++++++++++++++++ include/linux/acpi.h | 2 ++ 5 files changed, 72 insertions(+), 2 deletions(-) diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c index b1698bc..7db5563 100644 --- a/arch/ia64/kernel/acpi.c +++ b/arch/ia64/kernel/acpi.c @@ -796,7 +796,7 @@ int acpi_isa_irq_to_gsi(unsigned isa_irq, u32 *gsi) * ACPI based hotplug CPU support */ #ifdef CONFIG_ACPI_HOTPLUG_CPU -static int acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) +int acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) { #ifdef CONFIG_ACPI_NUMA /* diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index 0ce06ee..7d45261 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -696,7 +696,7 @@ static void __init acpi_set_irq_model_ioapic(void) #ifdef CONFIG_ACPI_HOTPLUG_CPU #include -static void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) +void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid) { #ifdef CONFIG_ACPI_NUMA int nid; diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index a212cef..d59e1cd 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -1094,6 +1094,9 @@ static int __init acpi_init(void) acpi_debugfs_init(); acpi_sleep_proc_init(); acpi_wakeup_device_init(); +#ifdef CONFIG_ACPI_HOTPLUG_CPU + acpi_set_processor_mapping(); +#endif return 0; } diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index 824b98b..45580ff 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -261,6 +261,71 @@ int acpi_get_cpuid(acpi_handle handle, int type, u32 acpi_id) } EXPORT_SYMBOL_GPL(acpi_get_cpuid); +#ifdef CONFIG_ACPI_HOTPLUG_CPU +static bool map_processor(acpi_handle handle, int *phys_id, int *cpuid) +{ + int type; + u32 acpi_id; + acpi_status status; + acpi_object_type acpi_type; + unsigned long long tmp; + union acpi_object object = { 0 }; + struct acpi_buffer buffer = { sizeof(union acpi_object), &object }; + + status = acpi_get_type(handle, &acpi_type); + if (ACPI_FAILURE(status)) + return false; + + switch (acpi_type) { + case ACPI_TYPE_PROCESSOR: + status = acpi_evaluate_object(handle, NULL, NULL, &buffer); + if (ACPI_FAILURE(status)) + return false; + acpi_id = object.processor.proc_id; + break; + case ACPI_TYPE_DEVICE: + status = acpi_evaluate_integer(handle, "_UID", NULL, &tmp); + if (ACPI_FAILURE(status)) + return false; + acpi_id = tmp; + break; + default: + return false; + } + + type = (acpi_type == ACPI_TYPE_DEVICE) ? 1 : 0; + + *phys_id = __acpi_get_phys_id(handle, type, acpi_id, false); + *cpuid = acpi_map_cpuid(*phys_id, acpi_id); + if (*cpuid == -1) + return false; + + return true; +} + +static acpi_status __init +set_processor_node_mapping(acpi_handle handle, u32 lvl, void *context, + void **rv) +{ + u32 apic_id; + int cpu_id; + + if (!map_processor(handle, &apic_id, &cpu_id)) + return AE_ERROR; + + acpi_map_cpu2node(handle, cpu_id, apic_id); + return AE_OK; +} + +void __init acpi_set_processor_mapping(void) +{ + /* Set persistent cpu <-> node mapping for all processors. */ + acpi_walk_namespace(ACPI_TYPE_PROCESSOR, ACPI_ROOT_OBJECT, + ACPI_UINT32_MAX, set_processor_node_mapping, + NULL, NULL, NULL); +} +#endif + #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC static int get_ioapic_id(struct acpi_subtable_header *entry, u32 gsi_base, u64 *phys_addr, int *ioapic_id) diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 0548339..c07f541 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -194,6 +194,8 @@ static inline bool invalid_phys_cpuid(phys_cpuid_t phys_id) /* Arch dependent functions for cpu hotplug support */ int acpi_map_cpu(acpi_handle handle, phys_cpuid_t physid, int *pcpu); int acpi_unmap_cpu(int cpu); +void acpi_map_cpu2node(acpi_handle handle, int cpu, int physid); +void __init acpi_set_processor_mapping(void); #endif /* CONFIG_ACPI_HOTPLUG_CPU */ #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/