X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=mm%2Fsparse.c;h=52843a76feede7b7f46b15874b7ff68dc32ca9a2;hb=f64dc58c5412233d4d44b0275eaebdc11bde23b3;hp=3047bf06c1f3256bd59965fc064a32b439135369;hpb=dd6ccfe64dad4ea498392805b477308abef43a4c;p=linux-2.6

diff --git a/mm/sparse.c b/mm/sparse.c
index 3047bf06c1..52843a76fe 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -9,6 +9,8 @@
 #include <linux/spinlock.h>
 #include <linux/vmalloc.h>
 #include <asm/dma.h>
+#include <asm/pgalloc.h>
+#include <asm/pgtable.h>
 
 /*
  * Permanent SPARSEMEM data:
@@ -41,6 +43,15 @@ int page_to_nid(struct page *page)
 	return section_to_node_table[page_to_section(page)];
 }
 EXPORT_SYMBOL(page_to_nid);
+
+static void set_section_nid(unsigned long section_nr, int nid)
+{
+	section_to_node_table[section_nr] = nid;
+}
+#else /* !NODE_NOT_IN_PAGE_FLAGS */
+static inline void set_section_nid(unsigned long section_nr, int nid)
+{
+}
 #endif
 
 #ifdef CONFIG_SPARSEMEM_EXTREME
@@ -68,10 +79,6 @@ static int __meminit sparse_index_init(unsigned long section_nr, int nid)
 	struct mem_section *section;
 	int ret = 0;
 
-#ifdef NODE_NOT_IN_PAGE_FLAGS
-	section_to_node_table[section_nr] = nid;
-#endif
-
 	if (mem_section[root])
 		return -EEXIST;
 
@@ -101,7 +108,7 @@ static inline int sparse_index_init(unsigned long section_nr, int nid)
 
 /*
  * Although written for the SPARSEMEM_EXTREME case, this happens
- * to also work for the flat array case becase
+ * to also work for the flat array case because
  * NR_SECTION_ROOTS==NR_MEM_SECTIONS.
  */
 int __section_nr(struct mem_section* ms)
@@ -148,6 +155,7 @@ void __init memory_present(int nid, unsigned long start, unsigned long end)
 		struct mem_section *ms;
 
 		sparse_index_init(section, nid);
+		set_section_nid(section, nid);
 
 		ms = __nr_to_section(section);
 		if (!ms->section_mem_map)
@@ -170,7 +178,7 @@ unsigned long __init node_memmap_size_bytes(int nid, unsigned long start_pfn,
 		if (nid != early_pfn_to_nid(pfn))
 			continue;
 
-		if (pfn_valid(pfn))
+		if (pfn_present(pfn))
 			nr_pages += PAGES_PER_SECTION;
 	}
 
@@ -200,11 +208,12 @@ struct page *sparse_decode_mem_map(unsigned long coded_mem_map, unsigned long pn
 static int __meminit sparse_init_one_section(struct mem_section *ms,
 		unsigned long pnum, struct page *mem_map)
 {
-	if (!valid_section(ms))
+	if (!present_section(ms))
 		return -EINVAL;
 
 	ms->section_mem_map &= ~SECTION_MAP_MASK;
-	ms->section_mem_map |= sparse_encode_mem_map(mem_map, pnum);
+	ms->section_mem_map |= sparse_encode_mem_map(mem_map, pnum) |
+							SECTION_HAS_MEM_MAP;
 
 	return 1;
 }
@@ -215,11 +224,10 @@ void *alloc_bootmem_high_node(pg_data_t *pgdat, unsigned long size)
 	return NULL;
 }
 
-static struct page __init *sparse_early_mem_map_alloc(unsigned long pnum)
+#ifndef CONFIG_SPARSEMEM_VMEMMAP
+struct page __init *sparse_early_mem_map_populate(unsigned long pnum, int nid)
 {
 	struct page *map;
-	struct mem_section *ms = __nr_to_section(pnum);
-	int nid = sparse_early_nid(ms);
 
 	map = alloc_remap(nid, sizeof(struct page) * PAGES_PER_SECTION);
 	if (map)
@@ -232,10 +240,22 @@ static struct page __init *sparse_early_mem_map_alloc(unsigned long pnum)
 
 	map = alloc_bootmem_node(NODE_DATA(nid),
 			sizeof(struct page) * PAGES_PER_SECTION);
+	return map;
+}
+#endif /* !CONFIG_SPARSEMEM_VMEMMAP */
+
+struct page __init *sparse_early_mem_map_alloc(unsigned long pnum)
+{
+	struct page *map;
+	struct mem_section *ms = __nr_to_section(pnum);
+	int nid = sparse_early_nid(ms);
+
+	map = sparse_early_mem_map_populate(pnum, nid);
 	if (map)
 		return map;
 
-	printk(KERN_WARNING "%s: allocation failed\n", __FUNCTION__);
+	printk(KERN_ERR "%s: sparsemem memory map backing failed "
+			"some memory will not be available.\n", __FUNCTION__);
 	ms->section_mem_map = 0;
 	return NULL;
 }
@@ -250,7 +270,7 @@ void __init sparse_init(void)
 	struct page *map;
 
 	for (pnum = 0; pnum < NR_MEM_SECTIONS; pnum++) {
-		if (!valid_section_nr(pnum))
+		if (!present_section_nr(pnum))
 			continue;
 
 		map = sparse_early_mem_map_alloc(pnum);