#include <linux/errno.h>
#include <linux/acpi.h>
#include <acpi/acpi_bus.h>
-#include <acpi/acmacros.h>
+
+#define PREFIX "ACPI: "
#define ACPI_NUMA 0x80000000
#define _COMPONENT ACPI_NUMA
ACPI_MODULE_NAME("numa");
static nodemask_t nodes_found_map = NODE_MASK_NONE;
-#define PXM_INVAL -1
-#define NID_INVAL -1
/* maps to convert between proximity domain and logical node ID */
static int pxm_to_node_map[MAX_PXM_DOMAINS]
return node_to_pxm_map[node];
}
-int __cpuinit acpi_map_pxm_to_node(int pxm)
+void __acpi_map_pxm_to_node(int pxm, int node)
+{
+ pxm_to_node_map[pxm] = node;
+ node_to_pxm_map[node] = pxm;
+}
+
+int acpi_map_pxm_to_node(int pxm)
{
int node = pxm_to_node_map[pxm];
if (nodes_weight(nodes_found_map) >= MAX_NUMNODES)
return NID_INVAL;
node = first_unset_node(nodes_found_map);
- pxm_to_node_map[pxm] = node;
- node_to_pxm_map[node] = pxm;
+ __acpi_map_pxm_to_node(pxm, node);
node_set(node, nodes_found_map);
}
return node;
}
+#if 0
void __cpuinit acpi_unmap_pxm_to_node(int node)
{
int pxm = node_to_pxm_map[node];
node_to_pxm_map[node] = PXM_INVAL;
node_clear(node, nodes_found_map);
}
+#endif /* 0 */
-void __init acpi_table_print_srat_entry(struct acpi_subtable_header * header)
+static void __init
+acpi_table_print_srat_entry(struct acpi_subtable_header *header)
{
ACPI_FUNCTION_NAME("acpi_table_print_srat_entry");
struct acpi_srat_mem_affinity *p =
(struct acpi_srat_mem_affinity *)header;
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
- "SRAT Memory (0x%lx length 0x%lx type 0x%x) in proximity domain %d %s%s\n",
+ "SRAT Memory (0x%lx length 0x%lx) in proximity domain %d %s%s\n",
(unsigned long)p->base_address,
(unsigned long)p->length,
- p->memory_type, p->proximity_domain,
+ p->proximity_domain,
(p->flags & ACPI_SRAT_MEM_ENABLED)?
"enabled" : "disabled",
(p->flags & ACPI_SRAT_MEM_HOT_PLUGGABLE)?
#endif /* ACPI_DEBUG_OUTPUT */
break;
+ case ACPI_SRAT_TYPE_X2APIC_CPU_AFFINITY:
+#ifdef ACPI_DEBUG_OUTPUT
+ {
+ struct acpi_srat_x2apic_cpu_affinity *p =
+ (struct acpi_srat_x2apic_cpu_affinity *)header;
+ ACPI_DEBUG_PRINT((ACPI_DB_INFO,
+ "SRAT Processor (x2apicid[0x%08x]) in"
+ " proximity domain %d %s\n",
+ p->apic_id,
+ p->proximity_domain,
+ (p->flags & ACPI_SRAT_CPU_ENABLED) ?
+ "enabled" : "disabled"));
+ }
+#endif /* ACPI_DEBUG_OUTPUT */
+ break;
default:
printk(KERN_WARNING PREFIX
"Found unsupported SRAT entry (type = 0x%x)\n",
}
}
+/*
+ * A lot of BIOS fill in 10 (= no distance) everywhere. This messes
+ * up the NUMA heuristics which wants the local node to have a smaller
+ * distance than the others.
+ * Do some quick checks here and only use the SLIT if it passes.
+ */
+static __init int slit_valid(struct acpi_table_slit *slit)
+{
+ int i, j;
+ int d = slit->locality_count;
+ for (i = 0; i < d; i++) {
+ for (j = 0; j < d; j++) {
+ u8 val = slit->entry[d*i + j];
+ if (i == j) {
+ if (val != LOCAL_DISTANCE)
+ return 0;
+ } else if (val <= LOCAL_DISTANCE)
+ return 0;
+ }
+ }
+ return 1;
+}
+
static int __init acpi_parse_slit(struct acpi_table_header *table)
{
struct acpi_table_slit *slit;
- u32 localities;
if (!table)
return -EINVAL;
slit = (struct acpi_table_slit *)table;
- /* downcast just for %llu vs %lu for i386/ia64 */
- localities = (u32) slit->locality_count;
-
+ if (!slit_valid(slit)) {
+ printk(KERN_INFO "ACPI: SLIT table looks invalid. Not used.\n");
+ return -EINVAL;
+ }
acpi_numa_slit_init(slit);
return 0;
}
+void __init __attribute__ ((weak))
+acpi_numa_x2apic_affinity_init(struct acpi_srat_x2apic_cpu_affinity *pa)
+{
+ printk(KERN_WARNING PREFIX
+ "Found unsupported x2apic [0x%08x] SRAT entry\n", pa->apic_id);
+ return;
+}
+
+
+static int __init
+acpi_parse_x2apic_affinity(struct acpi_subtable_header *header,
+ const unsigned long end)
+{
+ struct acpi_srat_x2apic_cpu_affinity *processor_affinity;
+
+ processor_affinity = (struct acpi_srat_x2apic_cpu_affinity *)header;
+ if (!processor_affinity)
+ return -EINVAL;
+
+ acpi_table_print_srat_entry(header);
+
+ /* let architecture-dependent part to do it */
+ acpi_numa_x2apic_affinity_init(processor_affinity);
+
+ return 0;
+}
+
static int __init
-acpi_parse_processor_affinity(struct acpi_subtable_header * header,
+acpi_parse_processor_affinity(struct acpi_subtable_header *header,
const unsigned long end)
{
struct acpi_srat_cpu_affinity *processor_affinity;
return 0;
}
-int __init
+static int __init
acpi_table_parse_srat(enum acpi_srat_type id,
acpi_table_entry_handler handler, unsigned int max_entries)
{
int __init acpi_numa_init(void)
{
- int result;
-
/* SRAT: Static Resource Affinity Table */
if (!acpi_table_parse(ACPI_SIG_SRAT, acpi_parse_srat)) {
- result = acpi_table_parse_srat(ACPI_SRAT_TYPE_CPU_AFFINITY,
- acpi_parse_processor_affinity,
- NR_CPUS);
- result = acpi_table_parse_srat(ACPI_SRAT_TYPE_MEMORY_AFFINITY, acpi_parse_memory_affinity, NR_NODE_MEMBLKS); // IA64 specific
+ acpi_table_parse_srat(ACPI_SRAT_TYPE_X2APIC_CPU_AFFINITY,
+ acpi_parse_x2apic_affinity, NR_CPUS);
+ acpi_table_parse_srat(ACPI_SRAT_TYPE_CPU_AFFINITY,
+ acpi_parse_processor_affinity, NR_CPUS);
+ acpi_table_parse_srat(ACPI_SRAT_TYPE_MEMORY_AFFINITY,
+ acpi_parse_memory_affinity,
+ NR_NODE_MEMBLKS);
}
/* SLIT: System Locality Information Table */
int acpi_get_pxm(acpi_handle h)
{
- unsigned long pxm;
+ unsigned long long pxm;
acpi_status status;
acpi_handle handle;
acpi_handle phandle = h;
} while (ACPI_SUCCESS(status));
return -1;
}
-EXPORT_SYMBOL(acpi_get_pxm);
int acpi_get_node(acpi_handle *handle)
{
int pxm, node = -1;
pxm = acpi_get_pxm(handle);
- if (pxm >= 0)
+ if (pxm >= 0 && pxm < MAX_PXM_DOMAINS)
node = acpi_map_pxm_to_node(pxm);
return node;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff