Date: Tue, 22 May 2012 03:00:59 GMT From: Mark Linimon <linimon@FreeBSD.org> To: FreeBSD-gnats-submit@FreeBSD.org Subject: kern/168212: [kernel] [patch] some suggested additions for uma_core.c Message-ID: <201205220300.q4M30xTX061072@freefall.freebsd.org> Resent-Message-ID: <201205220310.q4M3A2tr067665@freefall.freebsd.org>
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>Number: 168212
>Category: kern
>Synopsis: [kernel] [patch] some suggested additions for uma_core.c
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Tue May 22 03:10:02 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator: Mark Linimon
>Release: FreeBSD 9.0-STABLE i386
>Organization:
FreeBSD
>Environment:
System: FreeBSD freefall.freebsd.org 9.0-STABLE FreeBSD 9.0-STABLE #6 r235139: Tue May 8 21:19:03 UTC 2012 simon@freefall.freebsd.org:/usr/obj/usr/src/sys/FREEFALL i386
>Description:
While trying to debug a problem for a customer, I've found the following
additional code to be helfpul. Perhaps it is useful enough for others?
>How-To-Repeat:
>Fix:
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
>Release-Note:
>Audit-Trail:
>Unformatted:
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