diff -Nupr src.orig/mm/slub.c src/mm/slub.c

--- src.orig/mm/slub.c	2020-05-12 11:14:32.110667908 -0400

+++ src/mm/slub.c	2020-05-12 11:14:52.439786867 -0400

@@ -5852,6 +5852,9 @@ void get_slabinfo(struct kmem_cache *s,

 	int node;

 	struct kmem_cache_node *n;

+	if (!jiffies)

+		printk("slabinfo\n");

+

 	for_each_kmem_cache_node(s, node, n) {

 		nr_slabs += node_nr_slabs(n);

 		nr_objs += node_nr_objs(n);