svn commit: r269459 - in head/sys: conf kern

[Warner Losh]

Author: imp
Date: Sun Aug  3 05:00:43 2014
New Revision: 269459
URL: http://svnweb.freebsd.org/changeset/base/269459

Log:
  Make the witness lock limit an option.

Modified:
  head/sys/conf/options
  head/sys/kern/subr_witness.c

Modified: head/sys/conf/options
==============================================================================
--- head/sys/conf/options	Sun Aug  3 03:51:33 2014	(r269458)
+++ head/sys/conf/options	Sun Aug  3 05:00:43 2014	(r269459)
@@ -685,6 +685,7 @@ WITNESS			opt_global.h
 WITNESS_KDB		opt_witness.h
 WITNESS_NO_VNODE	opt_witness.h
 WITNESS_SKIPSPIN	opt_witness.h
+WITNESS_COUNT		opt_witness.h
 OPENSOLARIS_WITNESS	opt_global.h
 
 # options for ACPI support

Modified: head/sys/kern/subr_witness.c
==============================================================================
--- head/sys/kern/subr_witness.c	Sun Aug  3 03:51:33 2014	(r269458)
+++ head/sys/kern/subr_witness.c	Sun Aug  3 05:00:43 2014	(r269459)
@@ -132,7 +132,9 @@ __FBSDID("$FreeBSD$");
 /* Define this to check for blessed mutexes */
 #undef BLESSING
 
+#ifndef WITNESS_COUNT
 #define	WITNESS_COUNT 		1536
+#endif
 #define	WITNESS_CHILDCOUNT 	(WITNESS_COUNT * 4)
 #define	WITNESS_HASH_SIZE	251	/* Prime, gives load factor < 2 */
 #define	WITNESS_PENDLIST	(1024 + MAXCPU)