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Diffstat (limited to 'mm/vmstat.c')
-rw-r--r--mm/vmstat.c39
1 files changed, 25 insertions, 14 deletions
diff --git a/mm/vmstat.c b/mm/vmstat.c
index 44e7ac0fdb6..baa4ab387db 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -17,6 +17,7 @@
#include <linux/vmstat.h>
#include <linux/sched.h>
#include <linux/math64.h>
+#include <linux/writeback.h>
#ifdef CONFIG_VM_EVENT_COUNTERS
DEFINE_PER_CPU(struct vm_event_state, vm_event_states) = {{0}};
@@ -747,6 +748,8 @@ static const char * const vmstat_text[] = {
"nr_shmem",
"nr_dirtied",
"nr_written",
+ "nr_dirty_threshold",
+ "nr_dirty_background_threshold",
#ifdef CONFIG_NUMA
"numa_hit",
@@ -907,36 +910,44 @@ static const struct file_operations proc_zoneinfo_file_operations = {
.release = seq_release,
};
+enum writeback_stat_item {
+ NR_DIRTY_THRESHOLD,
+ NR_DIRTY_BG_THRESHOLD,
+ NR_VM_WRITEBACK_STAT_ITEMS,
+};
+
static void *vmstat_start(struct seq_file *m, loff_t *pos)
{
unsigned long *v;
-#ifdef CONFIG_VM_EVENT_COUNTERS
- unsigned long *e;
-#endif
- int i;
+ int i, stat_items_size;
if (*pos >= ARRAY_SIZE(vmstat_text))
return NULL;
+ stat_items_size = NR_VM_ZONE_STAT_ITEMS * sizeof(unsigned long) +
+ NR_VM_WRITEBACK_STAT_ITEMS * sizeof(unsigned long);
#ifdef CONFIG_VM_EVENT_COUNTERS
- v = kmalloc(NR_VM_ZONE_STAT_ITEMS * sizeof(unsigned long)
- + sizeof(struct vm_event_state), GFP_KERNEL);
-#else
- v = kmalloc(NR_VM_ZONE_STAT_ITEMS * sizeof(unsigned long),
- GFP_KERNEL);
+ stat_items_size += sizeof(struct vm_event_state);
#endif
+
+ v = kmalloc(stat_items_size, GFP_KERNEL);
m->private = v;
if (!v)
return ERR_PTR(-ENOMEM);
for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++)
v[i] = global_page_state(i);
+ v += NR_VM_ZONE_STAT_ITEMS;
+
+ global_dirty_limits(v + NR_DIRTY_BG_THRESHOLD,
+ v + NR_DIRTY_THRESHOLD);
+ v += NR_VM_WRITEBACK_STAT_ITEMS;
+
#ifdef CONFIG_VM_EVENT_COUNTERS
- e = v + NR_VM_ZONE_STAT_ITEMS;
- all_vm_events(e);
- e[PGPGIN] /= 2; /* sectors -> kbytes */
- e[PGPGOUT] /= 2;
+ all_vm_events(v);
+ v[PGPGIN] /= 2; /* sectors -> kbytes */
+ v[PGPGOUT] /= 2;
#endif
- return v + *pos;
+ return m->private + *pos;
}
static void *vmstat_next(struct seq_file *m, void *arg, loff_t *pos)