Add a test for callout_halt (and incidentally, fast softints).

regress/sys/kern/callout1/Makefile

@@ -0,0 +1,13 @@
+#	$NetBSD: Makefile,v 1.1 2008/03/28 20:44:57 ad Exp $
+
+KMOD=   callout1_test
+
+NOMAN=
+
+.PATH:	${.CURDIR}/../lkmcommon
+
+SRCS=	lkminit_test.c test_callout1.c
+CPPFLAGS+=-DLKMENTRY=callout1_test_lkmentry
+
+.include <bsd.kmod.mk>
+.include <bsd.subdir.mk>

regress/sys/kern/callout1/test_callout1.c

@@ -0,0 +1,117 @@
+/*	$NetBSD: test_callout1.c,v 1.1 2008/03/28 20:44:57 ad Exp $	*/
+
+/*-
+ * Copyright (c) 2007, 2008 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Andrew Doran.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the NetBSD
+ *	Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: test_callout1.c,v 1.1 2008/03/28 20:44:57 ad Exp $");
+
+#include <sys/param.h>
+#include <sys/ioctl.h>
+#include <sys/systm.h>
+#include <sys/proc.h>
+#include <sys/kthread.h>
+#include <sys/kernel.h>
+#include <sys/callout.h>
+
+int	testcall(struct lwp *, void *, register_t *);
+
+void	test_callout(void *);
+void	test_softint(void *);
+
+kmutex_t	test_mutex;
+kcondvar_t	test_cv;
+int		test_done;
+void		*test_sih;
+callout_t	test_ch;
+
+void
+test_callout(void *cookie)
+{
+	int s;
+	
+	/* Trigger soft interrupt. */
+	s = splhigh();
+	softint_schedule(test_sih);
+	splx(s);
+
+	mutex_enter(&test_mutex);
+	test_done = 1;
+	cv_broadcast(&test_cv);
+	mutex_exit(&test_mutex);
+}
+
+void
+test_softint(void *cookie)
+{
+
+	printf("l_ncsw = %d\n", (int)curlwp->l_ncsw);
+	callout_halt(&test_ch);
+	printf("l_ncsw = %d\n", (int)curlwp->l_ncsw);
+}
+
+int
+testcall(struct lwp *l, void *uap, register_t *retval)
+{
+
+	printf("test: initializing\n");
+
+	mutex_init(&test_mutex, MUTEX_DEFAULT, IPL_NONE);
+	cv_init(&test_cv, "testcv");
+	test_sih = softint_establish(SOFTINT_MPSAFE | SOFTINT_SERIAL,
+	    test_softint, NULL);
+	callout_init(&test_ch, CALLOUT_MPSAFE);
+	callout_setfunc(&test_ch, test_callout, NULL);
+
+	printf("test: firing\n");
+	callout_schedule(&test_ch, hz / 10);
+
+	printf("test: waiting\n");
+	mutex_enter(&test_mutex);
+	while (!test_done) {
+		cv_wait(&test_cv, &test_mutex);
+	}
+	mutex_exit(&test_mutex);
+
+	printf("test: finished\n");
+
+	callout_destroy(&test_ch);
+	softint_disestablish(test_sih);
+	mutex_destroy(&test_mutex);
+	cv_destroy(&test_cv);
+
+	return 0;
+}