X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=mm%2Fpage_alloc.c;h=54a4f5375bbaeaaa9af8faef441e4a758b89d12e;hb=2e8a538d865de0eb9813c8a0f2284e920299c0cc;hp=d61671260f924fce3d6d40e98d7b8578d41f739e;hpb=ca889e6c45e0b112cb2ca9d35afc66297519b5d5;p=linux-2.6

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index d61671260f..54a4f5375b 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -14,7 +14,6 @@
  *          (lots of bits borrowed from Ingo Molnar & Andrew Morton)
  */
 
-#include <linux/config.h>
 #include <linux/stddef.h>
 #include <linux/mm.h>
 #include <linux/swap.h>
@@ -456,7 +455,7 @@ static void __free_pages_ok(struct page *page, unsigned int order)
 
 	kernel_map_pages(page, 1 << order, 0);
 	local_irq_save(flags);
-	__mod_page_state(pgfree, 1 << order);
+	__count_vm_events(PGFREE, 1 << order);
 	free_one_page(page_zone(page), page, order);
 	local_irq_restore(flags);
 }
@@ -729,7 +728,7 @@ static void fastcall free_hot_cold_page(struct page *page, int cold)
 
 	pcp = &zone_pcp(zone, get_cpu())->pcp[cold];
 	local_irq_save(flags);
-	__inc_page_state(pgfree);
+	__count_vm_event(PGFREE);
 	list_add(&page->lru, &pcp->list);
 	pcp->count++;
 	if (pcp->count >= pcp->high) {
@@ -805,7 +804,7 @@ again:
 			goto failed;
 	}
 
-	__mod_page_state_zone(zone, pgalloc, 1 << order);
+	__count_zone_vm_events(PGALLOC, zone, 1 << order);
 	zone_statistics(zonelist, zone);
 	local_irq_restore(flags);
 	put_cpu();
@@ -2006,6 +2005,10 @@ static void __meminit free_area_init_core(struct pglist_data *pgdat,
 
 		zone->spanned_pages = size;
 		zone->present_pages = realsize;
+#ifdef CONFIG_NUMA
+		zone->min_unmapped_ratio = (realsize*sysctl_min_unmapped_ratio)
+						/ 100;
+#endif
 		zone->name = zone_names[j];
 		spin_lock_init(&zone->lock);
 		spin_lock_init(&zone->lru_lock);
@@ -2101,24 +2104,11 @@ static int page_alloc_cpu_notify(struct notifier_block *self,
 				 unsigned long action, void *hcpu)
 {
 	int cpu = (unsigned long)hcpu;
-	unsigned long *src, *dest;
 
 	if (action == CPU_DEAD) {
-		int i;
-
 		local_irq_disable();
 		__drain_pages(cpu);
-
-		/* Add dead cpu's page_states to our own. */
-		dest = (unsigned long *)&__get_cpu_var(page_states);
-		src = (unsigned long *)&per_cpu(page_states, cpu);
-
-		for (i = 0; i < sizeof(struct page_state)/sizeof(unsigned long);
-				i++) {
-			dest[i] += src[i];
-			src[i] = 0;
-		}
-
+		vm_events_fold_cpu(cpu);
 		local_irq_enable();
 		refresh_cpu_vm_stats(cpu);
 	}
@@ -2312,6 +2302,24 @@ int min_free_kbytes_sysctl_handler(ctl_table *table, int write,
 	return 0;
 }
 
+#ifdef CONFIG_NUMA
+int sysctl_min_unmapped_ratio_sysctl_handler(ctl_table *table, int write,
+	struct file *file, void __user *buffer, size_t *length, loff_t *ppos)
+{
+	struct zone *zone;
+	int rc;
+
+	rc = proc_dointvec_minmax(table, write, file, buffer, length, ppos);
+	if (rc)
+		return rc;
+
+	for_each_zone(zone)
+		zone->min_unmapped_ratio = (zone->present_pages *
+				sysctl_min_unmapped_ratio) / 100;
+	return 0;
+}
+#endif
+
 /*
  * lowmem_reserve_ratio_sysctl_handler - just a wrapper around
  *	proc_dointvec() so that we can call setup_per_zone_lowmem_reserve()