svn commit: r205764 - stable/8/sys/kern

[Bjoern A. Zeeb]

Author: bz
Date: Sat Mar 27 17:54:44 2010
New Revision: 205764
URL: http://svn.freebsd.org/changeset/base/205764

Log:
  MFC r205626:
  
    Print the pointer to the lock with the panic message. The previous
          panic: rw lock not unlocked
    was not really helpful for debugging. Now one can at least call
          show lock <ptr>
    form ddb to learn more about the lock.

Modified:
  stable/8/sys/kern/kern_rwlock.c
Directory Properties:
  stable/8/sys/   (props changed)
  stable/8/sys/amd64/include/xen/   (props changed)
  stable/8/sys/cddl/contrib/opensolaris/   (props changed)
  stable/8/sys/contrib/dev/acpica/   (props changed)
  stable/8/sys/contrib/pf/   (props changed)
  stable/8/sys/dev/xen/xenpci/   (props changed)

Modified: stable/8/sys/kern/kern_rwlock.c
==============================================================================
--- stable/8/sys/kern/kern_rwlock.c	Sat Mar 27 17:52:56 2010	(r205763)
+++ stable/8/sys/kern/kern_rwlock.c	Sat Mar 27 17:54:44 2010	(r205764)
@@ -196,8 +196,8 @@ void
 rw_destroy(struct rwlock *rw)
 {
 
-	KASSERT(rw->rw_lock == RW_UNLOCKED, ("rw lock not unlocked"));
-	KASSERT(rw->rw_recurse == 0, ("rw lock still recursed"));
+	KASSERT(rw->rw_lock == RW_UNLOCKED, ("rw lock %p not unlocked", rw));
+	KASSERT(rw->rw_recurse == 0, ("rw lock %p still recursed", rw));
 	rw->rw_lock = RW_DESTROYED;
 	lock_destroy(&rw->lock_object);
 }