diff options
| -rw-r--r-- | mm/vmstat.c | 39 |
1 files changed, 25 insertions, 14 deletions
diff --git a/mm/vmstat.c b/mm/vmstat.c index 44e7ac0fdb66..baa4ab387db7 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) |