X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=mm%2Fvmstat.c;h=6051fbab67ba26533594103c62790f779cd21c08;hb=efc1a3b16930c41d64ffefde16b87d82f603a8a0;hp=f45d7245a282d20dfccad35f58011d3c3caa6183;hpb=8f32f7e5ac2ed11b0659b6b55af926f3d58ffd9d;p=safe%2Fjmp%2Flinux-2.6

diff --git a/mm/vmstat.c b/mm/vmstat.c
index f45d724..6051fba 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -20,14 +20,14 @@
 DEFINE_PER_CPU(struct vm_event_state, vm_event_states) = {{0}};
 EXPORT_PER_CPU_SYMBOL(vm_event_states);
 
-static void sum_vm_events(unsigned long *ret, cpumask_t *cpumask)
+static void sum_vm_events(unsigned long *ret, const struct cpumask *cpumask)
 {
 	int cpu;
 	int i;
 
 	memset(ret, 0, NR_VM_EVENT_ITEMS * sizeof(unsigned long));
 
-	for_each_cpu_mask_nr(cpu, *cpumask) {
+	for_each_cpu(cpu, cpumask) {
 		struct vm_event_state *this = &per_cpu(vm_event_states, cpu);
 
 		for (i = 0; i < NR_VM_EVENT_ITEMS; i++)
@@ -43,7 +43,7 @@ static void sum_vm_events(unsigned long *ret, cpumask_t *cpumask)
 void all_vm_events(unsigned long *ret)
 {
 	get_online_cpus();
-	sum_vm_events(ret, &cpu_online_map);
+	sum_vm_events(ret, cpu_online_mask);
 	put_online_cpus();
 }
 EXPORT_SYMBOL_GPL(all_vm_events);
@@ -135,11 +135,7 @@ static void refresh_zone_stat_thresholds(void)
 	int cpu;
 	int threshold;
 
-	for_each_zone(zone) {
-
-		if (!zone->present_pages)
-			continue;
-
+	for_each_populated_zone(zone) {
 		threshold = calculate_threshold(zone);
 
 		for_each_online_cpu(cpu)
@@ -301,12 +297,9 @@ void refresh_cpu_vm_stats(int cpu)
 	int i;
 	int global_diff[NR_VM_ZONE_STAT_ITEMS] = { 0, };
 
-	for_each_zone(zone) {
+	for_each_populated_zone(zone) {
 		struct per_cpu_pageset *p;
 
-		if (!populated_zone(zone))
-			continue;
-
 		p = zone_pcp(zone, cpu);
 
 		for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++)
@@ -516,22 +509,11 @@ static void pagetypeinfo_showblockcount_print(struct seq_file *m,
 			continue;
 
 		page = pfn_to_page(pfn);
-#ifdef CONFIG_ARCH_FLATMEM_HAS_HOLES
-		/*
-		 * Ordinarily, memory holes in flatmem still have a valid
-		 * memmap for the PFN range. However, an architecture for
-		 * embedded systems (e.g. ARM) can free up the memmap backing
-		 * holes to save memory on the assumption the memmap is
-		 * never used. The page_zone linkages are then broken even
-		 * though pfn_valid() returns true. Skip the page if the
-		 * linkages are broken. Even if this test passed, the impact
-		 * is that the counters for the movable type are off but
-		 * fragmentation monitoring is likely meaningless on small
-		 * systems.
-		 */
-		if (page_zone(page) != zone)
+
+		/* Watch for unexpected holes punched in the memmap */
+		if (!memmap_valid_within(pfn, page, zone))
 			continue;
-#endif
+
 		mtype = get_pageblock_migratetype(page);
 
 		if (mtype < MIGRATE_TYPES)
@@ -600,13 +582,25 @@ static const struct file_operations fragmentation_file_operations = {
 	.release	= seq_release,
 };
 
-const struct seq_operations pagetypeinfo_op = {
+static const struct seq_operations pagetypeinfo_op = {
 	.start	= frag_start,
 	.next	= frag_next,
 	.stop	= frag_stop,
 	.show	= pagetypeinfo_show,
 };
 
+static int pagetypeinfo_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &pagetypeinfo_op);
+}
+
+static const struct file_operations pagetypeinfo_file_ops = {
+	.open		= pagetypeinfo_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release,
+};
+
 #ifdef CONFIG_ZONE_DMA
 #define TEXT_FOR_DMA(xx) xx "_dma",
 #else
@@ -635,10 +629,8 @@ static const char * const vmstat_text[] = {
 	"nr_active_anon",
 	"nr_inactive_file",
 	"nr_active_file",
-#ifdef CONFIG_UNEVICTABLE_LRU
 	"nr_unevictable",
 	"nr_mlock",
-#endif
 	"nr_anon_pages",
 	"nr_mapped",
 	"nr_file_pages",
@@ -647,11 +639,14 @@ static const char * const vmstat_text[] = {
 	"nr_slab_reclaimable",
 	"nr_slab_unreclaimable",
 	"nr_page_table_pages",
+	"nr_kernel_stack",
 	"nr_unstable",
 	"nr_bounce",
 	"nr_vmscan_write",
 	"nr_writeback_temp",
-
+	"nr_isolated_anon",
+	"nr_isolated_file",
+	"nr_shmem",
 #ifdef CONFIG_NUMA
 	"numa_hit",
 	"numa_miss",
@@ -681,10 +676,16 @@ static const char * const vmstat_text[] = {
 	TEXTS_FOR_ZONES("pgscan_kswapd")
 	TEXTS_FOR_ZONES("pgscan_direct")
 
+#ifdef CONFIG_NUMA
+	"zone_reclaim_failed",
+#endif
 	"pginodesteal",
 	"slabs_scanned",
 	"kswapd_steal",
 	"kswapd_inodesteal",
+	"kswapd_low_wmark_hit_quickly",
+	"kswapd_high_wmark_hit_quickly",
+	"kswapd_skip_congestion_wait",
 	"pageoutrun",
 	"allocstall",
 
@@ -693,7 +694,6 @@ static const char * const vmstat_text[] = {
 	"htlb_buddy_alloc_success",
 	"htlb_buddy_alloc_fail",
 #endif
-#ifdef CONFIG_UNEVICTABLE_LRU
 	"unevictable_pgs_culled",
 	"unevictable_pgs_scanned",
 	"unevictable_pgs_rescued",
@@ -703,7 +703,6 @@ static const char * const vmstat_text[] = {
 	"unevictable_pgs_stranded",
 	"unevictable_pgs_mlockfreed",
 #endif
-#endif
 };
 
 static void zoneinfo_show_print(struct seq_file *m, pg_data_t *pgdat,
@@ -716,18 +715,14 @@ static void zoneinfo_show_print(struct seq_file *m, pg_data_t *pgdat,
 		   "\n        min      %lu"
 		   "\n        low      %lu"
 		   "\n        high     %lu"
-		   "\n        scanned  %lu (aa: %lu ia: %lu af: %lu if: %lu)"
+		   "\n        scanned  %lu"
 		   "\n        spanned  %lu"
 		   "\n        present  %lu",
 		   zone_page_state(zone, NR_FREE_PAGES),
-		   zone->pages_min,
-		   zone->pages_low,
-		   zone->pages_high,
+		   min_wmark_pages(zone),
+		   low_wmark_pages(zone),
+		   high_wmark_pages(zone),
 		   zone->pages_scanned,
-		   zone->lru[LRU_ACTIVE_ANON].nr_scan,
-		   zone->lru[LRU_INACTIVE_ANON].nr_scan,
-		   zone->lru[LRU_ACTIVE_FILE].nr_scan,
-		   zone->lru[LRU_INACTIVE_FILE].nr_scan,
 		   zone->spanned_pages,
 		   zone->present_pages);
 
@@ -783,7 +778,7 @@ static int zoneinfo_show(struct seq_file *m, void *arg)
 	return 0;
 }
 
-const struct seq_operations zoneinfo_op = {
+static const struct seq_operations zoneinfo_op = {
 	.start	= frag_start, /* iterate over all zones. The same as in
 			       * fragmentation. */
 	.next	= frag_next,
@@ -791,6 +786,18 @@ const struct seq_operations zoneinfo_op = {
 	.show	= zoneinfo_show,
 };
 
+static int zoneinfo_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &zoneinfo_op);
+}
+
+static const struct file_operations proc_zoneinfo_file_operations = {
+	.open		= zoneinfo_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release,
+};
+
 static void *vmstat_start(struct seq_file *m, loff_t *pos)
 {
 	unsigned long *v;
@@ -846,13 +853,24 @@ static void vmstat_stop(struct seq_file *m, void *arg)
 	m->private = NULL;
 }
 
-const struct seq_operations vmstat_op = {
+static const struct seq_operations vmstat_op = {
 	.start	= vmstat_start,
 	.next	= vmstat_next,
 	.stop	= vmstat_stop,
 	.show	= vmstat_show,
 };
 
+static int vmstat_open(struct inode *inode, struct file *file)
+{
+	return seq_open(file, &vmstat_op);
+}
+
+static const struct file_operations proc_vmstat_file_operations = {
+	.open		= vmstat_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= seq_release,
+};
 #endif /* CONFIG_PROC_FS */
 
 #ifdef CONFIG_SMP
@@ -863,15 +881,15 @@ static void vmstat_update(struct work_struct *w)
 {
 	refresh_cpu_vm_stats(smp_processor_id());
 	schedule_delayed_work(&__get_cpu_var(vmstat_work),
-		sysctl_stat_interval);
+		round_jiffies_relative(sysctl_stat_interval));
 }
 
 static void __cpuinit start_cpu_timer(int cpu)
 {
-	struct delayed_work *vmstat_work = &per_cpu(vmstat_work, cpu);
+	struct delayed_work *work = &per_cpu(vmstat_work, cpu);
 
-	INIT_DELAYED_WORK_DEFERRABLE(vmstat_work, vmstat_update);
-	schedule_delayed_work_on(cpu, vmstat_work, HZ + cpu);
+	INIT_DELAYED_WORK_DEFERRABLE(work, vmstat_update);
+	schedule_delayed_work_on(cpu, work, __round_jiffies_relative(HZ, cpu));
 }
 
 /*
@@ -925,6 +943,9 @@ static int __init setup_vmstat(void)
 #endif
 #ifdef CONFIG_PROC_FS
 	proc_create("buddyinfo", S_IRUGO, NULL, &fragmentation_file_operations);
+	proc_create("pagetypeinfo", S_IRUGO, NULL, &pagetypeinfo_file_ops);
+	proc_create("vmstat", S_IRUGO, NULL, &proc_vmstat_file_operations);
+	proc_create("zoneinfo", S_IRUGO, NULL, &proc_zoneinfo_file_operations);
 #endif
 	return 0;
 }