#define CPU_FTR_NOEXECUTE 0
#endif
-int init_bootmem_done;
int mem_init_done;
unsigned long long memory_limit;
}
EXPORT_SYMBOL_GPL(walk_system_ram_range);
-/*
- * Initialize the bootmem system and give it all the memory we
- * have available. If we are using highmem, we only put the
- * lowmem into the bootmem system.
- */
#ifndef CONFIG_NEED_MULTIPLE_NODES
-void __init do_init_bootmem(void)
+void __init initmem_init(void)
{
- unsigned long start, bootmap_pages;
- unsigned long total_pages;
- struct memblock_region *reg;
- int boot_mapsize;
-
max_low_pfn = max_pfn = memblock_end_of_DRAM() >> PAGE_SHIFT;
- total_pages = (memblock_end_of_DRAM() - memstart_addr) >> PAGE_SHIFT;
+ min_low_pfn = MEMORY_START >> PAGE_SHIFT;
#ifdef CONFIG_HIGHMEM
- total_pages = total_lowmem >> PAGE_SHIFT;
max_low_pfn = lowmem_end_addr >> PAGE_SHIFT;
#endif
- /*
- * Find an area to use for the bootmem bitmap. Calculate the size of
- * bitmap required as (Total Memory) / PAGE_SIZE / BITS_PER_BYTE.
- * Add 1 additional page in case the address isn't page-aligned.
- */
- bootmap_pages = bootmem_bootmap_pages(total_pages);
-
- start = memblock_alloc(bootmap_pages << PAGE_SHIFT, PAGE_SIZE);
-
- min_low_pfn = MEMORY_START >> PAGE_SHIFT;
- boot_mapsize = init_bootmem_node(NODE_DATA(0), start >> PAGE_SHIFT, min_low_pfn, max_low_pfn);
-
/* Place all memblock_regions in the same node and merge contiguous
* memblock_regions
*/
memblock_set_node(0, (phys_addr_t)ULLONG_MAX, &memblock.memory, 0);
- /* Add all physical memory to the bootmem map, mark each area
- * present.
- */
-#ifdef CONFIG_HIGHMEM
- free_bootmem_with_active_regions(0, lowmem_end_addr >> PAGE_SHIFT);
-
- /* reserve the sections we're already using */
- for_each_memblock(reserved, reg) {
- unsigned long top = reg->base + reg->size - 1;
- if (top < lowmem_end_addr)
- reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT);
- else if (reg->base < lowmem_end_addr) {
- unsigned long trunc_size = lowmem_end_addr - reg->base;
- reserve_bootmem(reg->base, trunc_size, BOOTMEM_DEFAULT);
- }
- }
-#else
- free_bootmem_with_active_regions(0, max_pfn);
-
- /* reserve the sections we're already using */
- for_each_memblock(reserved, reg)
- reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT);
-#endif
/* XXX need to clip this if using highmem? */
sparse_memory_present_with_active_regions(0);
-
- init_bootmem_done = 1;
}
/* mark pages that don't exist as nosave */
mark_nonram_nosave();
}
-static void __init register_page_bootmem_info(void)
-{
- int i;
-
- for_each_online_node(i)
- register_page_bootmem_info_node(NODE_DATA(i));
-}
-
void __init mem_init(void)
{
/*
swiotlb_init(0);
#endif
- register_page_bootmem_info();
high_memory = (void *) __va(max_low_pfn * PAGE_SIZE);
set_max_mapnr(max_pfn);
free_all_bootmem();
return 0;
}
-/*
- * get_node_active_region - Return active region containing pfn
- * Active range returned is empty if none found.
- * @pfn: The page to return the region for
- * @node_ar: Returned set to the active region containing @pfn
- */
-static void __init get_node_active_region(unsigned long pfn,
- struct node_active_region *node_ar)
-{
- unsigned long start_pfn, end_pfn;
- int i, nid;
-
- for_each_mem_pfn_range(i, MAX_NUMNODES, &start_pfn, &end_pfn, &nid) {
- if (pfn >= start_pfn && pfn < end_pfn) {
- node_ar->nid = nid;
- node_ar->start_pfn = start_pfn;
- node_ar->end_pfn = end_pfn;
- break;
- }
- }
-}
-
static void reset_numa_cpu_lookup_table(void)
{
unsigned int cpu;
}
}
-/*
- * Allocate some memory, satisfying the memblock or bootmem allocator where
- * required. nid is the preferred node and end is the physical address of
- * the highest address in the node.
- *
- * Returns the virtual address of the memory.
- */
-static void __init *careful_zallocation(int nid, unsigned long size,
- unsigned long align,
- unsigned long end_pfn)
-{
- void *ret;
- int new_nid;
- unsigned long ret_paddr;
-
- ret_paddr = __memblock_alloc_base(size, align, end_pfn << PAGE_SHIFT);
-
- /* retry over all memory */
- if (!ret_paddr)
- ret_paddr = __memblock_alloc_base(size, align, memblock_end_of_DRAM());
-
- if (!ret_paddr)
- panic("numa.c: cannot allocate %lu bytes for node %d",
- size, nid);
-
- ret = __va(ret_paddr);
-
- /*
- * We initialize the nodes in numeric order: 0, 1, 2...
- * and hand over control from the MEMBLOCK allocator to the
- * bootmem allocator. If this function is called for
- * node 5, then we know that all nodes <5 are using the
- * bootmem allocator instead of the MEMBLOCK allocator.
- *
- * So, check the nid from which this allocation came
- * and double check to see if we need to use bootmem
- * instead of the MEMBLOCK. We don't free the MEMBLOCK memory
- * since it would be useless.
- */
- new_nid = early_pfn_to_nid(ret_paddr >> PAGE_SHIFT);
- if (new_nid < nid) {
- ret = __alloc_bootmem_node(NODE_DATA(new_nid),
- size, align, 0);
-
- dbg("alloc_bootmem %p %lx\n", ret, size);
- }
-
- memset(ret, 0, size);
- return ret;
-}
-
static struct notifier_block ppc64_numa_nb = {
.notifier_call = cpu_numa_callback,
.priority = 1 /* Must run before sched domains notifier. */
};
-static void __init mark_reserved_regions_for_nid(int nid)
+/* Initialize NODE_DATA for a node on the local memory */
+static void __init setup_node_data(int nid, u64 start_pfn, u64 end_pfn)
{
- struct pglist_data *node = NODE_DATA(nid);
- struct memblock_region *reg;
-
- for_each_memblock(reserved, reg) {
- unsigned long physbase = reg->base;
- unsigned long size = reg->size;
- unsigned long start_pfn = physbase >> PAGE_SHIFT;
- unsigned long end_pfn = PFN_UP(physbase + size);
- struct node_active_region node_ar;
- unsigned long node_end_pfn = pgdat_end_pfn(node);
-
- /*
- * Check to make sure that this memblock.reserved area is
- * within the bounds of the node that we care about.
- * Checking the nid of the start and end points is not
- * sufficient because the reserved area could span the
- * entire node.
- */
- if (end_pfn <= node->node_start_pfn ||
- start_pfn >= node_end_pfn)
- continue;
-
- get_node_active_region(start_pfn, &node_ar);
- while (start_pfn < end_pfn &&
- node_ar.start_pfn < node_ar.end_pfn) {
- unsigned long reserve_size = size;
- /*
- * if reserved region extends past active region
- * then trim size to active region
- */
- if (end_pfn > node_ar.end_pfn)
- reserve_size = (node_ar.end_pfn << PAGE_SHIFT)
- - physbase;
- /*
- * Only worry about *this* node, others may not
- * yet have valid NODE_DATA().
- */
- if (node_ar.nid == nid) {
- dbg("reserve_bootmem %lx %lx nid=%d\n",
- physbase, reserve_size, node_ar.nid);
- reserve_bootmem_node(NODE_DATA(node_ar.nid),
- physbase, reserve_size,
- BOOTMEM_DEFAULT);
- }
- /*
- * if reserved region is contained in the active region
- * then done.
- */
- if (end_pfn <= node_ar.end_pfn)
- break;
-
- /*
- * reserved region extends past the active region
- * get next active region that contains this
- * reserved region
- */
- start_pfn = node_ar.end_pfn;
- physbase = start_pfn << PAGE_SHIFT;
- size = size - reserve_size;
- get_node_active_region(start_pfn, &node_ar);
- }
- }
+ u64 spanned_pages = end_pfn - start_pfn;
+ const size_t nd_size = roundup(sizeof(pg_data_t), SMP_CACHE_BYTES);
+ u64 nd_pa;
+ void *nd;
+ int tnid;
+
+ if (spanned_pages)
+ pr_info("Initmem setup node %d [mem %#010Lx-%#010Lx]\n",
+ nid, start_pfn << PAGE_SHIFT,
+ (end_pfn << PAGE_SHIFT) - 1);
+ else
+ pr_info("Initmem setup node %d\n", nid);
+
+ nd_pa = memblock_alloc_try_nid(nd_size, SMP_CACHE_BYTES, nid);
+ nd = __va(nd_pa);
+
+ /* report and initialize */
+ pr_info(" NODE_DATA [mem %#010Lx-%#010Lx]\n",
+ nd_pa, nd_pa + nd_size - 1);
+ tnid = early_pfn_to_nid(nd_pa >> PAGE_SHIFT);
+ if (tnid != nid)
+ pr_info(" NODE_DATA(%d) on node %d\n", nid, tnid);
+
+ node_data[nid] = nd;
+ memset(NODE_DATA(nid), 0, sizeof(pg_data_t));
+ NODE_DATA(nid)->node_id = nid;
+ NODE_DATA(nid)->node_start_pfn = start_pfn;
+ NODE_DATA(nid)->node_spanned_pages = spanned_pages;
}
-
-void __init do_init_bootmem(void)
+void __init initmem_init(void)
{
int nid, cpu;
- min_low_pfn = 0;
max_low_pfn = memblock_end_of_DRAM() >> PAGE_SHIFT;
max_pfn = max_low_pfn;
else
dump_numa_memory_topology();
+ memblock_dump_all();
+
for_each_online_node(nid) {
unsigned long start_pfn, end_pfn;
- void *bootmem_vaddr;
- unsigned long bootmap_pages;
get_pfn_range_for_nid(nid, &start_pfn, &end_pfn);
-
- /*
- * Allocate the node structure node local if possible
- *
- * Be careful moving this around, as it relies on all
- * previous nodes' bootmem to be initialized and have
- * all reserved areas marked.
- */
- NODE_DATA(nid) = careful_zallocation(nid,
- sizeof(struct pglist_data),
- SMP_CACHE_BYTES, end_pfn);
-
- dbg("node %d\n", nid);
- dbg("NODE_DATA() = %p\n", NODE_DATA(nid));
-
- NODE_DATA(nid)->bdata = &bootmem_node_data[nid];
- NODE_DATA(nid)->node_start_pfn = start_pfn;
- NODE_DATA(nid)->node_spanned_pages = end_pfn - start_pfn;
-
- if (NODE_DATA(nid)->node_spanned_pages == 0)
- continue;
-
- dbg("start_paddr = %lx\n", start_pfn << PAGE_SHIFT);
- dbg("end_paddr = %lx\n", end_pfn << PAGE_SHIFT);
-
- bootmap_pages = bootmem_bootmap_pages(end_pfn - start_pfn);
- bootmem_vaddr = careful_zallocation(nid,
- bootmap_pages << PAGE_SHIFT,
- PAGE_SIZE, end_pfn);
-
- dbg("bootmap_vaddr = %p\n", bootmem_vaddr);
-
- init_bootmem_node(NODE_DATA(nid),
- __pa(bootmem_vaddr) >> PAGE_SHIFT,
- start_pfn, end_pfn);
-
- free_bootmem_with_active_regions(nid, end_pfn);
- /*
- * Be very careful about moving this around. Future
- * calls to careful_zallocation() depend on this getting
- * done correctly.
- */
- mark_reserved_regions_for_nid(nid);
+ setup_node_data(nid, start_pfn, end_pfn);
sparse_memory_present_with_active_regions(nid);
}
- init_bootmem_done = 1;
-
- /*
- * Now bootmem is initialised we can create the node to cpumask
- * lookup tables and setup the cpu callback to populate them.
- */
setup_node_to_cpumask_map();
reset_numa_cpu_lookup_table();
projects / cascardo / linux.git / commitdiff