* Machine setup..
*/
-struct cpuinfo_x86 boot_cpu_data;
+struct cpuinfo_x86 boot_cpu_data __read_mostly;
unsigned long mmu_cr4_features;
int acpi_disabled;
EXPORT_SYMBOL(acpi_disabled);
-#ifdef CONFIG_ACPI_BOOT
+#ifdef CONFIG_ACPI
extern int __initdata acpi_ht;
extern acpi_interrupt_flags acpi_sci_flags;
int __initdata acpi_force = 0;
maxcpus = simple_strtoul(from + 8, NULL, 0);
}
#endif
-#ifdef CONFIG_ACPI_BOOT
+#ifdef CONFIG_ACPI
/* "acpi=off" disables both ACPI table parsing and interpreter init */
if (!memcmp(from, "acpi=off", 8))
disable_acpi();
init_memory_mapping(0, (end_pfn_map << PAGE_SHIFT));
-#ifdef CONFIG_ACPI_BOOT
+#ifdef CONFIG_ACPI
/*
* Initialize the ACPI boot-time table parser (gets the RSDP and SDT).
* Call this early for SRAT node setup.
}
}
#endif
-
- sparse_init();
-
#ifdef CONFIG_KEXEC
if (crashk_res.start != crashk_res.end) {
reserve_bootmem(crashk_res.start,
crashk_res.end - crashk_res.start + 1);
}
#endif
+
+ sparse_init();
+
paging_init();
check_ioapic();
-#ifdef CONFIG_ACPI_BOOT
+#ifdef CONFIG_ACPI
/*
* Read APIC and some other early information from ACPI tables.
*/
}
}
+#ifdef CONFIG_NUMA
+static int nearby_node(int apicid)
+{
+ int i;
+ for (i = apicid - 1; i >= 0; i--) {
+ int node = apicid_to_node[i];
+ if (node != NUMA_NO_NODE && node_online(node))
+ return node;
+ }
+ for (i = apicid + 1; i < MAX_LOCAL_APIC; i++) {
+ int node = apicid_to_node[i];
+ if (node != NUMA_NO_NODE && node_online(node))
+ return node;
+ }
+ return first_node(node_online_map); /* Shouldn't happen */
+}
+#endif
+
/*
* On a AMD dual core setup the lower bits of the APIC id distingush the cores.
* Assumes number of cores is a power of two.
{
#ifdef CONFIG_SMP
int cpu = smp_processor_id();
- int node = 0;
unsigned bits;
+#ifdef CONFIG_NUMA
+ int node = 0;
+ unsigned apicid = phys_proc_id[cpu];
+#endif
bits = 0;
while ((1 << bits) < c->x86_num_cores)
phys_proc_id[cpu] >>= bits;
#ifdef CONFIG_NUMA
- /* When an ACPI SRAT table is available use the mappings from SRAT
- instead. */
- if (acpi_numa <= 0) {
- node = phys_proc_id[cpu];
- if (!node_online(node))
- node = first_node(node_online_map);
- cpu_to_node[cpu] = node;
- } else {
- node = cpu_to_node[cpu];
- }
+ node = phys_proc_id[cpu];
+ if (apicid_to_node[apicid] != NUMA_NO_NODE)
+ node = apicid_to_node[apicid];
+ if (!node_online(node)) {
+ /* Two possibilities here:
+ - The CPU is missing memory and no node was created.
+ In that case try picking one from a nearby CPU
+ - The APIC IDs differ from the HyperTransport node IDs
+ which the K8 northbridge parsing fills in.
+ Assume they are all increased by a constant offset,
+ but in the same order as the HT nodeids.
+ If that doesn't result in a usable node fall back to the
+ path for the previous case. */
+ int ht_nodeid = apicid - (phys_proc_id[0] << bits);
+ if (ht_nodeid >= 0 &&
+ apicid_to_node[ht_nodeid] != NUMA_NO_NODE)
+ node = apicid_to_node[ht_nodeid];
+ /* Pick a nearby node */
+ if (!node_online(node))
+ node = nearby_node(apicid);
+ }
+ cpu_to_node[cpu] = node;
+
+ printk(KERN_INFO "CPU %d(%d) -> Node %d -> Core %d\n",
+ cpu, c->x86_num_cores, node, cpu_core_id[cpu]);
#endif
-
- printk(KERN_INFO "CPU %d(%d) -> Node %d -> Core %d\n",
- cpu, c->x86_num_cores, node, cpu_core_id[cpu]);
#endif
}
c->x86_num_cores = intel_num_cpu_cores(c);
}
-void __cpuinit get_cpu_vendor(struct cpuinfo_x86 *c)
+static void __cpuinit get_cpu_vendor(struct cpuinfo_x86 *c)
{
char *v = c->x86_vendor_id;