diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/x86/mm/srat.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/x86/mm/srat.c | 193 |
1 files changed, 0 insertions, 193 deletions
diff --git a/ANDROID_3.4.5/arch/x86/mm/srat.c b/ANDROID_3.4.5/arch/x86/mm/srat.c deleted file mode 100644 index efb5b4b9..00000000 --- a/ANDROID_3.4.5/arch/x86/mm/srat.c +++ /dev/null @@ -1,193 +0,0 @@ -/* - * ACPI 3.0 based NUMA setup - * Copyright 2004 Andi Kleen, SuSE Labs. - * - * 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. - */ - -#include <linux/kernel.h> -#include <linux/acpi.h> -#include <linux/mmzone.h> -#include <linux/bitmap.h> -#include <linux/module.h> -#include <linux/topology.h> -#include <linux/bootmem.h> -#include <linux/memblock.h> -#include <linux/mm.h> -#include <asm/proto.h> -#include <asm/numa.h> -#include <asm/e820.h> -#include <asm/apic.h> -#include <asm/uv/uv.h> - -int acpi_numa __initdata; - -static __init int setup_node(int pxm) -{ - return acpi_map_pxm_to_node(pxm); -} - -static __init void bad_srat(void) -{ - printk(KERN_ERR "SRAT: SRAT not used.\n"); - acpi_numa = -1; -} - -static __init inline int srat_disabled(void) -{ - return acpi_numa < 0; -} - -/* Callback for SLIT parsing */ -void __init acpi_numa_slit_init(struct acpi_table_slit *slit) -{ - int i, j; - - for (i = 0; i < slit->locality_count; i++) - for (j = 0; j < slit->locality_count; j++) - numa_set_distance(pxm_to_node(i), pxm_to_node(j), - slit->entry[slit->locality_count * i + j]); -} - -/* Callback for Proximity Domain -> x2APIC mapping */ -void __init -acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa) -{ - int pxm, node; - int apic_id; - - if (srat_disabled()) - return; - if (pa->header.length < sizeof(struct acpi_srat_x2apic_cpu_affinity)) { - bad_srat(); - return; - } - if ((pa->flags & ACPI_SRAT_CPU_ENABLED) == 0) - return; - pxm = pa->proximity_domain; - apic_id = pa->apic_id; - if (!apic->apic_id_valid(apic_id)) { - printk(KERN_INFO "SRAT: PXM %u -> X2APIC 0x%04x ignored\n", - pxm, apic_id); - return; - } - node = setup_node(pxm); - if (node < 0) { - printk(KERN_ERR "SRAT: Too many proximity domains %x\n", pxm); - bad_srat(); - return; - } - - if (apic_id >= MAX_LOCAL_APIC) { - printk(KERN_INFO "SRAT: PXM %u -> APIC 0x%04x -> Node %u skipped apicid that is too big\n", pxm, apic_id, node); - return; - } - set_apicid_to_node(apic_id, node); - node_set(node, numa_nodes_parsed); - acpi_numa = 1; - printk(KERN_INFO "SRAT: PXM %u -> APIC 0x%04x -> Node %u\n", - pxm, apic_id, node); -} - -/* Callback for Proximity Domain -> LAPIC mapping */ -void __init -acpi_numa_processor_affinity_init(struct acpi_srat_cpu_affinity *pa) -{ - int pxm, node; - int apic_id; - - if (srat_disabled()) - return; - if (pa->header.length != sizeof(struct acpi_srat_cpu_affinity)) { - bad_srat(); - return; - } - if ((pa->flags & ACPI_SRAT_CPU_ENABLED) == 0) - return; - pxm = pa->proximity_domain_lo; - if (acpi_srat_revision >= 2) - pxm |= *((unsigned int*)pa->proximity_domain_hi) << 8; - node = setup_node(pxm); - if (node < 0) { - printk(KERN_ERR "SRAT: Too many proximity domains %x\n", pxm); - bad_srat(); - return; - } - - if (get_uv_system_type() >= UV_X2APIC) - apic_id = (pa->apic_id << 8) | pa->local_sapic_eid; - else - apic_id = pa->apic_id; - - if (apic_id >= MAX_LOCAL_APIC) { - printk(KERN_INFO "SRAT: PXM %u -> APIC 0x%02x -> Node %u skipped apicid that is too big\n", pxm, apic_id, node); - return; - } - - set_apicid_to_node(apic_id, node); - node_set(node, numa_nodes_parsed); - acpi_numa = 1; - printk(KERN_INFO "SRAT: PXM %u -> APIC 0x%02x -> Node %u\n", - pxm, apic_id, node); -} - -#ifdef CONFIG_MEMORY_HOTPLUG -static inline int save_add_info(void) {return 1;} -#else -static inline int save_add_info(void) {return 0;} -#endif - -/* Callback for parsing of the Proximity Domain <-> Memory Area mappings */ -void __init -acpi_numa_memory_affinity_init(struct acpi_srat_mem_affinity *ma) -{ - u64 start, end; - int node, pxm; - - if (srat_disabled()) - return; - if (ma->header.length != sizeof(struct acpi_srat_mem_affinity)) { - bad_srat(); - return; - } - if ((ma->flags & ACPI_SRAT_MEM_ENABLED) == 0) - return; - - if ((ma->flags & ACPI_SRAT_MEM_HOT_PLUGGABLE) && !save_add_info()) - return; - start = ma->base_address; - end = start + ma->length; - pxm = ma->proximity_domain; - if (acpi_srat_revision <= 1) - pxm &= 0xff; - node = setup_node(pxm); - if (node < 0) { - printk(KERN_ERR "SRAT: Too many proximity domains.\n"); - bad_srat(); - return; - } - - if (numa_add_memblk(node, start, end) < 0) { - bad_srat(); - return; - } - - printk(KERN_INFO "SRAT: Node %u PXM %u %Lx-%Lx\n", node, pxm, - start, end); -} - -void __init acpi_numa_arch_fixup(void) {} - -int __init x86_acpi_numa_init(void) -{ - int ret; - - ret = acpi_numa_init(); - if (ret < 0) - return ret; - return srat_disabled() ? -EINVAL : 0; -} |