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From: John Baldwin <jhb@FreeBSD.org>
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Subject: PERFORCE change 87906 for review
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http://perforce.freebsd.org/chv.cgi?CH=87906

Change 87906 by jhb@jhb_slimer on 2005/12/08 22:02:02

	Add an event for testing show mtx and show sx.

Affected files ...

.. //depot/projects/smpng/sys/modules/crash/crash.c#22 edit

Differences ...

==== //depot/projects/smpng/sys/modules/crash/crash.c#22 (text+ko) ====

@@ -83,6 +83,23 @@
 
 /* Events. */
 
+static void
+ddblock_test(void)
+{
+
+	mtx_lock(&test1_mtx);
+	kdb_enter("test1_mtx locked");
+	mtx_unlock(&test1_mtx);
+	sx_slock(&foo);
+	kdb_enter("foo slocked");
+	sx_sunlock(&foo);
+	sx_xlock(&foo);
+	kdb_enter("foo xlocked");
+	sx_xunlock(&foo);
+	kdb_enter("both unlocked");
+}
+CRASH_EVENT("ddb lock commands", ddblock_test);
+
 #ifdef WITNESS
 static void
 spinlock_test(void)