Merge branch 'linus' into timers/hpettip-timers-hpet-2008-06-16_09.25_Mon

1 files changed, 22 insertions, 95 deletions

diff --git a/arch/mips/sgi-ip27/ip27-memory.c b/arch/mips/sgi-ip27/ip27-memory.c
index bf438d02366e..42cd10956306 100644
--- a/arch/mips/sgi-ip27/ip27-memory.c
+++ b/arch/mips/sgi-ip27/ip27-memory.c
@@ -33,10 +33,6 @@
 #define SLOT_PFNSHIFT           (SLOT_SHIFT - PAGE_SHIFT)
 #define PFN_NASIDSHFT           (NASID_SHFT - PAGE_SHIFT)
 
-#define SLOT_IGNORED		0xffff
-
-static short __initdata slot_lastfilled_cache[MAX_COMPACT_NODES];
-static unsigned short __initdata slot_psize_cache[MAX_COMPACT_NODES][MAX_MEM_SLOTS];
 static struct bootmem_data __initdata plat_node_bdata[MAX_COMPACT_NODES];
 
 struct node_data *__node_data[MAX_COMPACT_NODES];
@@ -267,51 +263,6 @@ static pfn_t __init slot_getbasepfn(cnodeid_t cnode, int slot)
 	return ((pfn_t)nasid << PFN_NASIDSHFT) | (slot << SLOT_PFNSHIFT);
 }
 
-/*
- * Return the number of pages of memory provided by the given slot
- * on the specified node.
- */
-static pfn_t __init slot_getsize(cnodeid_t node, int slot)
-{
-	return (pfn_t) slot_psize_cache[node][slot];
-}
-
-/*
- * Return highest slot filled
- */
-static int __init node_getlastslot(cnodeid_t node)
-{
-	return (int) slot_lastfilled_cache[node];
-}
-
-/*
- * Return the pfn of the last free page of memory on a node.
- */
-static pfn_t __init node_getmaxclick(cnodeid_t node)
-{
-	pfn_t	slot_psize;
-	int	slot;
-
-	/*
-	 * Start at the top slot. When we find a slot with memory in it,
-	 * that's the winner.
-	 */
-	for (slot = (MAX_MEM_SLOTS - 1); slot >= 0; slot--) {
-		if ((slot_psize = slot_getsize(node, slot))) {
-			if (slot_psize == SLOT_IGNORED)
-				continue;
-			/* Return the basepfn + the slot size, minus 1. */
-			return slot_getbasepfn(node, slot) + slot_psize - 1;
-		}
-	}
-
-	/*
-	 * If there's no memory on the node, return 0. This is likely
-	 * to cause problems.
-	 */
-	return 0;
-}
-
 static pfn_t __init slot_psize_compute(cnodeid_t node, int slot)
 {
 	nasid_t nasid;
@@ -404,13 +355,13 @@ static void __init mlreset(void)
 static void __init szmem(void)
 {
 	pfn_t slot_psize, slot0sz = 0, nodebytes;	/* Hack to detect problem configs */
-	int slot, ignore;
+	int slot;
 	cnodeid_t node;
 
 	num_physpages = 0;
 
 	for_each_online_node(node) {
-		ignore = nodebytes = 0;
+		nodebytes = 0;
 		for (slot = 0; slot < MAX_MEM_SLOTS; slot++) {
 			slot_psize = slot_psize_compute(node, slot);
 			if (slot == 0)
@@ -420,21 +371,20 @@ static void __init szmem(void)
 			 * kernel text.
 			 */
 			nodebytes += (1LL << SLOT_SHIFT);
+
+			if (!slot_psize)
+				continue;
+
 			if ((nodebytes >> PAGE_SHIFT) * (sizeof(struct page)) >
-						(slot0sz << PAGE_SHIFT))
-				ignore = 1;
-			if (ignore && slot_psize) {
+						(slot0sz << PAGE_SHIFT)) {
 				printk("Ignoring slot %d onwards on node %d\n",
 								slot, node);
-				slot_psize_cache[node][slot] = SLOT_IGNORED;
 				slot = MAX_MEM_SLOTS;
 				continue;
 			}
 			num_physpages += slot_psize;
-			slot_psize_cache[node][slot] =
-					(unsigned short) slot_psize;
-			if (slot_psize)
-				slot_lastfilled_cache[node] = slot;
+			add_active_range(node, slot_getbasepfn(node, slot),
+					 slot_getbasepfn(node, slot) + slot_psize);
 		}
 	}
 }
@@ -442,18 +392,20 @@ static void __init szmem(void)
 static void __init node_mem_init(cnodeid_t node)
 {
 	pfn_t slot_firstpfn = slot_getbasepfn(node, 0);
-	pfn_t slot_lastpfn = slot_firstpfn + slot_getsize(node, 0);
 	pfn_t slot_freepfn = node_getfirstfree(node);
-	struct pglist_data *pd;
 	unsigned long bootmap_size;
+	pfn_t start_pfn, end_pfn;
+
+	get_pfn_range_for_nid(node, &start_pfn, &end_pfn);
 
 	/*
 	 * Allocate the node data structures on the node first.
 	 */
 	__node_data[node] = __va(slot_freepfn << PAGE_SHIFT);
 
-	pd = NODE_DATA(node);
-	pd->bdata = &plat_node_bdata[node];
+	NODE_DATA(node)->bdata = &plat_node_bdata[node];
+	NODE_DATA(node)->node_start_pfn = start_pfn;
+	NODE_DATA(node)->node_spanned_pages = end_pfn - start_pfn;
 
 	cpus_clear(hub_data(node)->h_cpus);
 
@@ -461,12 +413,12 @@ static void __init node_mem_init(cnodeid_t node)
 			       sizeof(struct hub_data));
 
   	bootmap_size = init_bootmem_node(NODE_DATA(node), slot_freepfn,
-					slot_firstpfn, slot_lastpfn);
-	free_bootmem_node(NODE_DATA(node), slot_firstpfn << PAGE_SHIFT,
-			(slot_lastpfn - slot_firstpfn) << PAGE_SHIFT);
+					start_pfn, end_pfn);
+	free_bootmem_with_active_regions(node, end_pfn);
 	reserve_bootmem_node(NODE_DATA(node), slot_firstpfn << PAGE_SHIFT,
 		((slot_freepfn - slot_firstpfn) << PAGE_SHIFT) + bootmap_size,
 		BOOTMEM_DEFAULT);
+	sparse_memory_present_with_active_regions(node);
 }
 
 /*
@@ -515,16 +467,15 @@ void __init paging_init(void)
 	pagetable_init();
 
 	for_each_online_node(node) {
-		pfn_t start_pfn = slot_getbasepfn(node, 0);
-		pfn_t end_pfn = node_getmaxclick(node) + 1;
+		pfn_t start_pfn, end_pfn;
 
-		zones_size[ZONE_NORMAL] = end_pfn - start_pfn;
-		free_area_init_node(node, NODE_DATA(node),
-				zones_size, start_pfn, NULL);
+		get_pfn_range_for_nid(node, &start_pfn, &end_pfn);
 
 		if (end_pfn > max_low_pfn)
 			max_low_pfn = end_pfn;
 	}
+	zones_size[ZONE_NORMAL] = max_low_pfn;
+	free_area_init_nodes(zones_size);
 }
 
 void __init mem_init(void)
@@ -535,34 +486,10 @@ void __init mem_init(void)
 	high_memory = (void *) __va(num_physpages << PAGE_SHIFT);
 
 	for_each_online_node(node) {
-		unsigned slot, numslots;
-		struct page *end, *p;
-
 		/*
 		 * This will free up the bootmem, ie, slot 0 memory.
 		 */
 		totalram_pages += free_all_bootmem_node(NODE_DATA(node));
-
-		/*
-		 * We need to manually do the other slots.
-		 */
-		numslots = node_getlastslot(node);
-		for (slot = 1; slot <= numslots; slot++) {
-			p = nid_page_nr(node, slot_getbasepfn(node, slot) -
-					      slot_getbasepfn(node, 0));
-
-			/*
-			 * Free valid memory in current slot.
-			 */
-			for (end = p + slot_getsize(node, slot); p < end; p++) {
-				/* if (!page_is_ram(pgnr)) continue; */
-				/* commented out until page_is_ram works */
-				ClearPageReserved(p);
-				init_page_count(p);
-				__free_page(p);
-				totalram_pages++;
-			}
-		}
 	}
 
 	totalram_pages -= setup_zero_pages();	/* This comes from node 0 */