x86: rename the i8259_32/64.c leftovers to irqinit_32/64.c

[linux-2.6] / mm / memory_hotplug.c

diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index c8b3ca79de2d65ab2430f17f9cd92bfb4c417728..b17dca7249f8a41e0806e4465291f1dd2eba4913 100644 (file)
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -29,6 +29,8 @@
 
 #include <asm/tlbflush.h>
 
+#include "internal.h"
+
 /* add this memory to iomem resource */
 static struct resource *register_memory_resource(u64 start, u64 size)
 {
@@ -58,8 +60,105 @@ static void release_memory_resource(struct resource *res)
        return;
 }
 
-
 #ifdef CONFIG_MEMORY_HOTPLUG_SPARSE
+#ifndef CONFIG_SPARSEMEM_VMEMMAP
+static void get_page_bootmem(unsigned long info,  struct page *page, int magic)
+{
+       atomic_set(&page->_mapcount, magic);
+       SetPagePrivate(page);
+       set_page_private(page, info);
+       atomic_inc(&page->_count);
+}
+
+void put_page_bootmem(struct page *page)
+{
+       int magic;
+
+       magic = atomic_read(&page->_mapcount);
+       BUG_ON(magic >= -1);
+
+       if (atomic_dec_return(&page->_count) == 1) {
+               ClearPagePrivate(page);
+               set_page_private(page, 0);
+               reset_page_mapcount(page);
+               __free_pages_bootmem(page, 0);
+       }
+
+}
+
+void register_page_bootmem_info_section(unsigned long start_pfn)
+{
+       unsigned long *usemap, mapsize, section_nr, i;
+       struct mem_section *ms;
+       struct page *page, *memmap;
+
+       if (!pfn_valid(start_pfn))
+               return;
+
+       section_nr = pfn_to_section_nr(start_pfn);
+       ms = __nr_to_section(section_nr);
+
+       /* Get section's memmap address */
+       memmap = sparse_decode_mem_map(ms->section_mem_map, section_nr);
+
+       /*
+        * Get page for the memmap's phys address
+        * XXX: need more consideration for sparse_vmemmap...
+        */
+       page = virt_to_page(memmap);
+       mapsize = sizeof(struct page) * PAGES_PER_SECTION;
+       mapsize = PAGE_ALIGN(mapsize) >> PAGE_SHIFT;
+
+       /* remember memmap's page */
+       for (i = 0; i < mapsize; i++, page++)
+               get_page_bootmem(section_nr, page, SECTION_INFO);
+
+       usemap = __nr_to_section(section_nr)->pageblock_flags;
+       page = virt_to_page(usemap);
+
+       mapsize = PAGE_ALIGN(usemap_size()) >> PAGE_SHIFT;
+
+       for (i = 0; i < mapsize; i++, page++)
+               get_page_bootmem(section_nr, page, MIX_INFO);
+
+}
+
+void register_page_bootmem_info_node(struct pglist_data *pgdat)
+{
+       unsigned long i, pfn, end_pfn, nr_pages;
+       int node = pgdat->node_id;
+       struct page *page;
+       struct zone *zone;
+
+       nr_pages = PAGE_ALIGN(sizeof(struct pglist_data)) >> PAGE_SHIFT;
+       page = virt_to_page(pgdat);
+
+       for (i = 0; i < nr_pages; i++, page++)
+               get_page_bootmem(node, page, NODE_INFO);
+
+       zone = &pgdat->node_zones[0];
+       for (; zone < pgdat->node_zones + MAX_NR_ZONES - 1; zone++) {
+               if (zone->wait_table) {
+                       nr_pages = zone->wait_table_hash_nr_entries
+                               * sizeof(wait_queue_head_t);
+                       nr_pages = PAGE_ALIGN(nr_pages) >> PAGE_SHIFT;
+                       page = virt_to_page(zone->wait_table);
+
+                       for (i = 0; i < nr_pages; i++, page++)
+                               get_page_bootmem(node, page, NODE_INFO);
+               }
+       }
+
+       pfn = pgdat->node_start_pfn;
+       end_pfn = pfn + pgdat->node_spanned_pages;
+
+       /* register_section info */
+       for (; pfn < end_pfn; pfn += PAGES_PER_SECTION)
+               register_page_bootmem_info_section(pfn);
+
+}
+#endif /* !CONFIG_SPARSEMEM_VMEMMAP */
+
 static int __add_zone(struct zone *zone, unsigned long phys_start_pfn)
 {
        struct pglist_data *pgdat = zone->zone_pgdat;
@@ -101,6 +200,16 @@ static int __add_section(struct zone *zone, unsigned long phys_start_pfn)
        return register_new_memory(__pfn_to_section(phys_start_pfn));
 }
 
+#ifdef CONFIG_SPARSEMEM_VMEMMAP
+static int __remove_section(struct zone *zone, struct mem_section *ms)
+{
+       /*
+        * XXX: Freeing memmap with vmemmap is not implement yet.
+        *      This should be removed later.
+        */
+       return -EBUSY;
+}
+#else
 static int __remove_section(struct zone *zone, struct mem_section *ms)
 {
        unsigned long flags;
@@ -119,6 +228,7 @@ static int __remove_section(struct zone *zone, struct mem_section *ms)
        pgdat_resize_unlock(pgdat, &flags);
        return 0;
 }
+#endif
 
 /*
  * Reasonably generic function for adding memory.  It is