diff -Nupr src.orig/mm/slub.c src/mm/slub.c
--- src.orig/mm/slub.c	2020-03-10 10:35:55.138562683 -0400
+++ src/mm/slub.c	2020-03-10 10:36:22.189508057 -0400
@@ -5716,6 +5716,9 @@ void get_slabinfo(struct kmem_cache *s,
 	unsigned long nr_free = 0;
 	int node;
 
+	if (!jiffies)
+		printk("slabinfo\n");
+
 	for_each_online_node(node) {
 		struct kmem_cache_node *n = get_node(s, node);