int cpu;
for_each_possible_early_cpu(cpu) {
- if (cpu == 0) {
- void *cpu0_data = __cpu0_per_cpu;
- __per_cpu_offset[cpu] = (char*)cpu0_data -
- __per_cpu_start;
- } else if (node == node_cpuid[cpu].nid) {
- memcpy(__va(cpu_data), __phys_per_cpu_start,
- __per_cpu_end - __per_cpu_start);
- __per_cpu_offset[cpu] = (char*)__va(cpu_data) -
- __per_cpu_start;
- cpu_data += PERCPU_PAGE_SIZE;
- }
+ void *src = cpu == 0 ? __cpu0_per_cpu : __phys_per_cpu_start;
+
+ if (node != node_cpuid[cpu].nid)
+ continue;
+
+ memcpy(__va(cpu_data), src, __per_cpu_end - __per_cpu_start);
+ __per_cpu_offset[cpu] = (char *)__va(cpu_data) -
+ __per_cpu_start;
+
+ /*
+ * percpu area for cpu0 is moved from the __init area
+ * which is setup by head.S and used till this point.
+ * Update ar.k3. This move is ensures that percpu
+ * area for cpu0 is on the correct node and its
+ * virtual address isn't insanely far from other
+ * percpu areas which is important for congruent
+ * percpu allocator.
+ */
+ if (cpu == 0)
+ ia64_set_kr(IA64_KR_PER_CPU_DATA,
+ (unsigned long)cpu_data -
+ (unsigned long)__per_cpu_start);
+
+ cpu_data += PERCPU_PAGE_SIZE;
}
#endif
return cpu_data;
}
+#ifdef CONFIG_SMP
+/**
+ * setup_per_cpu_areas - setup percpu areas
+ *
+ * Arch code has already allocated and initialized percpu areas. All
+ * this function has to do is to teach the determined layout to the
+ * dynamic percpu allocator, which happens to be more complex than
+ * creating whole new ones using helpers.
+ */
+void __init setup_per_cpu_areas(void)
+{
+ struct pcpu_alloc_info *ai;
+ struct pcpu_group_info *uninitialized_var(gi);
+ unsigned int *cpu_map;
+ void *base;
+ unsigned long base_offset;
+ unsigned int cpu;
+ ssize_t static_size, reserved_size, dyn_size;
+ int node, prev_node, unit, nr_units, rc;
+
+ ai = pcpu_alloc_alloc_info(MAX_NUMNODES, nr_cpu_ids);
+ if (!ai)
+ panic("failed to allocate pcpu_alloc_info");
+ cpu_map = ai->groups[0].cpu_map;
+
+ /* determine base */
+ base = (void *)ULONG_MAX;
+ for_each_possible_cpu(cpu)
+ base = min(base,
+ (void *)(__per_cpu_offset[cpu] + __per_cpu_start));
+ base_offset = (void *)__per_cpu_start - base;
+
+ /* build cpu_map, units are grouped by node */
+ unit = 0;
+ for_each_node(node)
+ for_each_possible_cpu(cpu)
+ if (node == node_cpuid[cpu].nid)
+ cpu_map[unit++] = cpu;
+ nr_units = unit;
+
+ /* set basic parameters */
+ static_size = __per_cpu_end - __per_cpu_start;
+ reserved_size = PERCPU_MODULE_RESERVE;
+ dyn_size = PERCPU_PAGE_SIZE - static_size - reserved_size;
+ if (dyn_size < 0)
+ panic("percpu area overflow static=%zd reserved=%zd\n",
+ static_size, reserved_size);
+
+ ai->static_size = static_size;
+ ai->reserved_size = reserved_size;
+ ai->dyn_size = dyn_size;
+ ai->unit_size = PERCPU_PAGE_SIZE;
+ ai->atom_size = PAGE_SIZE;
+ ai->alloc_size = PERCPU_PAGE_SIZE;
+
+ /*
+ * CPUs are put into groups according to node. Walk cpu_map
+ * and create new groups at node boundaries.
+ */
+ prev_node = -1;
+ ai->nr_groups = 0;
+ for (unit = 0; unit < nr_units; unit++) {
+ cpu = cpu_map[unit];
+ node = node_cpuid[cpu].nid;
+
+ if (node == prev_node) {
+ gi->nr_units++;
+ continue;
+ }
+ prev_node = node;
+
+ gi = &ai->groups[ai->nr_groups++];
+ gi->nr_units = 1;
+ gi->base_offset = __per_cpu_offset[cpu] + base_offset;
+ gi->cpu_map = &cpu_map[unit];
+ }
+
+ rc = pcpu_setup_first_chunk(ai, base);
+ if (rc)
+ panic("failed to setup percpu area (err=%d)", rc);
+
+ pcpu_free_alloc_info(ai);
+}
+#endif
+
/**
* fill_pernode - initialize pernode data.
* @node: the node id.
/* Set the node_data pointer for each per-cpu struct */
for_each_possible_early_cpu(cpu) {
node = node_cpuid[cpu].nid;
- per_cpu(cpu_info, cpu).node_data = mem_data[node].node_data;
+ per_cpu(ia64_cpu_info, cpu).node_data =
+ mem_data[node].node_data;
}
#else
{
cpu = 0;
node = node_cpuid[cpu].nid;
cpu0_cpu_info = (struct cpuinfo_ia64 *)(__phys_per_cpu_start +
- ((char *)&per_cpu__cpu_info - __per_cpu_start));
+ ((char *)&per_cpu__ia64_cpu_info - __per_cpu_start));
cpu0_cpu_info->node_data = mem_data[node].node_data;
}
#endif /* CONFIG_SMP */
sparse_init();
#ifdef CONFIG_VIRTUAL_MEM_MAP
- vmalloc_end -= PAGE_ALIGN(ALIGN(max_low_pfn, MAX_ORDER_NR_PAGES) *
+ VMALLOC_END -= PAGE_ALIGN(ALIGN(max_low_pfn, MAX_ORDER_NR_PAGES) *
sizeof(struct page));
- vmem_map = (struct page *) vmalloc_end;
+ vmem_map = (struct page *) VMALLOC_END;
efi_memmap_walk(create_mem_map_page_table, NULL);
printk("Virtual mem_map starts at 0x%p\n", vmem_map);
#endif
projects / linux-flexiantxendom0-3.2.10.git / blobdiff