diff mbox

[RFC,v4,23/40] mm: Fix vmstat to also account for freepages in the region allocator

Message ID 20130925231903.26184.23956.stgit@srivatsabhat.in.ibm.com (mailing list archive)
State RFC, archived
Headers show

Commit Message

Srivatsa S. Bhat Sept. 25, 2013, 11:19 p.m. UTC 
Currently vmstat considers only the freepages present in the buddy freelists
of the page allocator. But with the newly introduced region allocator in
place, freepages could be present in the region allocator as well. So teach
vmstat to take them into consideration when reporting free memory.

Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
---

 mm/vmstat.c |    8 ++++++++
 1 file changed, 8 insertions(+)


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diff mbox

Patch

diff --git a/mm/vmstat.c b/mm/vmstat.c
index bb44d30..4dc103e 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -868,6 +868,8 @@  static void frag_show_print(struct seq_file *m, pg_data_t *pgdat,
 {
 	int i, order, t;
 	struct free_area *area;
+	struct free_area_region *reg_area;
+	struct region_allocator *reg_alloc;
 
 	seq_printf(m, "Node %d, zone %8s \n", pgdat->node_id, zone->name);
 
@@ -884,6 +886,12 @@  static void frag_show_print(struct seq_file *m, pg_data_t *pgdat,
 				nr_free +=
 					area->free_list[t].mr_list[i].nr_free;
 			}
+
+			/* Add up freepages in the region allocator as well */
+			reg_alloc = &zone->region_allocator;
+			reg_area = &reg_alloc->region[i].region_area[order];
+			nr_free += reg_area->nr_free;
+
 			seq_printf(m, "%6lu ", nr_free);
 		}
 		seq_putc(m, '\n');