From: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
---
mm/vmstat.c | 42 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 42 insertions(+)
diff --git a/mm/vmstat.c b/mm/vmstat.c
index 0b218d9..9e5a862 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -1448,6 +1448,47 @@ static int zoneinfo_open(struct inode *inode, struct file *file)
.release = seq_release,
};
+static void fraginfo_show_print(struct seq_file *m, pg_data_t *pgdat,
+ struct zone *zone)
+{
+ int order;
+ int index;
+
+ seq_printf(m, "Node %d, zone %8s ", pgdat->node_id, zone->name);
+ for (order = 0; order < MAX_ORDER; ++order) {
+ index = zone->free_area[order].unusable_free_avg /
+ (1 << UNUSABLE_INDEX_FACTOR);
+ seq_printf(m, "0.%03d ", index);
+ }
+ seq_putc(m, '\n');
+}
+
+static int fraginfo_show(struct seq_file *m, void *arg)
+{
+ pg_data_t *pgdat = (pg_data_t *)arg;
+ walk_zones_in_node(m, pgdat, fraginfo_show_print);
+ return 0;
+}
+
+static const struct seq_operations fraginfo_op = {
+ .start = frag_start,
+ .next = frag_next,
+ .stop = frag_stop,
+ .show = fraginfo_show,
+};
+
+static int fraginfo_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &fraginfo_op);
+}
+
+static const struct file_operations fraginfo_file_operations = {
+ .open = fraginfo_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
enum writeback_stat_item {
NR_DIRTY_THRESHOLD,
NR_DIRTY_BG_THRESHOLD,
@@ -1778,6 +1819,7 @@ static int __init setup_vmstat(void)
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);
+ proc_create("fraginfo", S_IRUGO, NULL, &fraginfo_file_operations);
#endif
return 0;
}
--
1.9.1
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@xxxxxxxxx. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
