Author: kib
Date: Sat Aug 10 21:42:14 2013
New Revision: 254195
URL: http://svnweb.freebsd.org/changeset/base/254195
Log:
The r254167 moved initialization of the sleepqueues before the witness
is operational. init_sleepqueues() initializes 256 mutexes, which,
due to witness still being cold, started to overflow the pending_locks
array.
As stated in the reported panic message, increase WITNESS_PENDLIST
from 768 to 1024, which provides space for additional 256 locks.
Reported by: many
Tested by: rakuco, bdrewery
Modified:
head/sys/kern/subr_witness.c
Modified: head/sys/kern/subr_witness.c
==============================================================================
--- head/sys/kern/subr_witness.c Sat Aug 10 21:31:35 2013
(r254194)
+++ head/sys/kern/subr_witness.c Sat Aug 10 21:42:14 2013
(r254195)
@@ -135,7 +135,7 @@ __FBSDID("$FreeBSD$");
#define WITNESS_COUNT 1024
#define WITNESS_CHILDCOUNT (WITNESS_COUNT * 4)
#define WITNESS_HASH_SIZE 251 /* Prime, gives load factor < 2
*/
-#define WITNESS_PENDLIST 768
+#define WITNESS_PENDLIST 1024
/* Allocate 256 KB of stack data space */
#define WITNESS_LO_DATA_COUNT 2048
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