From dc6db24d2476cd09c0ecf2b8d80313539f737a89 Mon Sep 17 00:00:00 2001 From: Gu Zheng Date: Thu, 25 Aug 2016 16:35:18 +0800 Subject: x86/acpi: Set persistent cpuid <-> nodeid mapping when booting The whole patch-set aims at making cpuid <-> nodeid mapping persistent. So that, when node online/offline happens, cache based on cpuid <-> nodeid mapping such as wq_numa_possible_cpumask will not cause any problem. It contains 4 steps: 1. Enable apic registeration flow to handle both enabled and disabled cpus. 2. Introduce a new array storing all possible cpuid <-> apicid mapping. 3. Enable _MAT and MADT relative apis to return non-present or disabled cpus' apicid. 4. Establish all possible cpuid <-> nodeid mapping. 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. [ tglx: Remove the unneeded exports ] Signed-off-by: Gu Zheng Signed-off-by: Tang Chen Signed-off-by: Zhu Guihua Signed-off-by: Dou Liyang Acked-by: Ingo Molnar Cc: mika.j.penttila@gmail.com Cc: len.brown@intel.com Cc: rafael@kernel.org Cc: rjw@rjwysocki.net Cc: yasu.isimatu@gmail.com Cc: linux-mm@kvack.org Cc: linux-acpi@vger.kernel.org Cc: isimatu.yasuaki@jp.fujitsu.com Cc: gongzhaogang@inspur.com Cc: tj@kernel.org Cc: izumi.taku@jp.fujitsu.com Cc: cl@linux.com Cc: chen.tang@easystack.cn Cc: akpm@linux-foundation.org Cc: kamezawa.hiroyu@jp.fujitsu.com Cc: lenb@kernel.org Link: http://lkml.kernel.org/r/1472114120-3281-6-git-send-email-douly.fnst@cn.fujitsu.com Signed-off-by: Thomas Gleixner --- include/linux/acpi.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'include/linux/acpi.h') diff --git a/include/linux/acpi.h b/include/linux/acpi.h index c9a596b9535c..5b4f9accf96b 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -271,8 +271,11 @@ 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); +int acpi_map_cpu2node(acpi_handle handle, int cpu, int physid); #endif /* CONFIG_ACPI_HOTPLUG_CPU */ +void acpi_set_processor_mapping(void); + #ifdef CONFIG_ACPI_HOTPLUG_IOAPIC int acpi_get_ioapic_id(acpi_handle handle, u32 gsi_base, u64 *phys_addr); #endif -- cgit v1.2.3