Index: uma_core.c
===================================================================
RCS file: /home/FreeBSD/ncvs/src/sys/vm/uma_core.c,v
retrieving revision 1.173
diff -u -r1.173 uma_core.c
--- uma_core.c	27 Jan 2012 20:18:31 -0000	1.173
+++ uma_core.c	22 May 2012 02:57:20 -0000
@@ -3160,6 +3160,10 @@
 	    keg->uk_ipers, keg->uk_ppera,
 	    (keg->uk_ipers * keg->uk_pages) - keg->uk_free, keg->uk_free,
 	    (keg->uk_maxpages / keg->uk_ppera) * keg->uk_ipers);
+	printf("pages %d maxpages %d slabzone %p\n",
+	    keg->uk_pages,
+	    keg->uk_maxpages,
+	    keg->uk_slabzone);
 	printf("Part slabs:\n");
 	LIST_FOREACH(slab, &keg->uk_part_slab, us_link)
 		slab_print(slab);
@@ -3388,3 +3392,10 @@
 	}
 }
 #endif
+
+DB_SHOW_COMMAND(kegs, db_show_kegs)
+{
+	db_printf("master kegs at %p:\n", kegs);
+	uma_print_zone(kegs);
+}
+#endif