svn commit: r192609 - user/kmacy/releng_7_2_fcs/sys/kern

Kip Macy kmacy at FreeBSD.org
Fri May 22 22:48:56 UTC 2009


Author: kmacy
Date: Fri May 22 22:48:55 2009
New Revision: 192609
URL: http://svn.freebsd.org/changeset/base/192609

Log:
  enable condvar and friends to operate on spin locks

Modified:
  user/kmacy/releng_7_2_fcs/sys/kern/kern_mutex.c

Modified: user/kmacy/releng_7_2_fcs/sys/kern/kern_mutex.c
==============================================================================
--- user/kmacy/releng_7_2_fcs/sys/kern/kern_mutex.c	Fri May 22 22:22:21 2009	(r192608)
+++ user/kmacy/releng_7_2_fcs/sys/kern/kern_mutex.c	Fri May 22 22:48:55 2009	(r192609)
@@ -141,7 +141,7 @@ void
 lock_spin(struct lock_object *lock, int how)
 {
 
-	panic("spin locks can only use msleep_spin");
+	mtx_lock_spin((struct mtx *)lock);
 }
 
 int
@@ -158,8 +158,11 @@ unlock_mtx(struct lock_object *lock)
 int
 unlock_spin(struct lock_object *lock)
 {
+	struct mtx *m;
 
-	panic("spin locks can only use msleep_spin");
+	m = (struct mtx *)lock;
+	mtx_assert(m, MA_OWNED | MA_NOTRECURSED);
+	mtx_unlock_spin(m);
 }
 
 /*


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