[RFC PATCH v2 06/14] tools/vm/slabinfo: Add defrag_used_ratio output

Tobin C. Harding
2019-04-03T04:32:29Z

Add output for the newly added defrag_used_ratio sysfs knob.

Signed-off-by: Tobin C. Harding <tobin@kernel.org>
---
tools/vm/slabinfo.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/tools/vm/slabinfo.c b/tools/vm/slabinfo.c
index d2c22f9ee2d8..ef4ff93df4cc 100644
--- a/tools/vm/slabinfo.c
+++ b/tools/vm/slabinfo.c
@@ -34,6 +34,7 @@ struct slabinfo {
unsigned int sanity_checks, slab_size, store_user, trace;
int order, poison, reclaim_account, red_zone;
int movable, ctor;
+ int defrag_used_ratio;
int remote_node_defrag_ratio;
unsigned long partial, objects, slabs, objects_partial, objects_total;
unsigned long alloc_fastpath, alloc_slowpath;
@@ -549,6 +550,8 @@ static void report(struct slabinfo *s)
printf("** Slabs are destroyed via RCU\n");
if (s->reclaim_account)
printf("** Reclaim accounting active\n");
+ if (s->movable)
+ printf("** Defragmentation at %d%%\n", s->defrag_used_ratio);

printf("\nSizes (bytes) Slabs Debug Memory\n");
printf("------------------------------------------------------------------------\n");
@@ -1279,6 +1282,7 @@ static void read_slab_dir(void)
slab->deactivate_bypass = get_obj("deactivate_bypass");
slab->remote_node_defrag_ratio =
get_obj("remote_node_defrag_ratio");
+ slab->defrag_used_ratio = get_obj("defrag_used_ratio");
chdir("..");
if (read_slab_obj(slab, "ops")) {
if (strstr(buffer, "ctor :"))
--
2.21.0