[src/trunk]: src/sys/kern DTrace: missed kern_dtrace.c (thanks rmind!)

[darran <darran%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/e763071e586e
branches:  trunk
changeset: 752255:e763071e586e
user:      darran <darran%NetBSD.org@localhost>
date:      Sun Feb 21 07:28:51 2010 +0000

description:
DTrace: missed kern_dtrace.c (thanks rmind!)

diffstat:

 sys/kern/kern_dtrace.c |  95 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 95 insertions(+), 0 deletions(-)

diffs (99 lines):

diff -r 71d9565594a2 -r e763071e586e sys/kern/kern_dtrace.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/kern/kern_dtrace.c    Sun Feb 21 07:28:51 2010 +0000
@@ -0,0 +1,95 @@
+/*     $NetBSD: kern_dtrace.c,v 1.1 2010/02/21 07:28:51 darran Exp $   */
+
+/*-
+ * Copyright (c) 2007-2008 John Birrell <jb%FreeBSD.org@localhost>
+ * All rights reserved.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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: kern_dtrace.c,v 1.1 2010/02/21 07:28:51 darran Exp $");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/malloc.h>
+#include <sys/kmem.h>
+#include <sys/proc.h>
+#include <sys/dtrace_bsd.h>
+
+#define KDTRACE_PROC_SIZE      64
+#define KDTRACE_PROC_ZERO      8
+#define        KDTRACE_THREAD_SIZE     256
+#define        KDTRACE_THREAD_ZERO     64
+
+/* Return the DTrace process data size compiled in the kernel hooks. */
+size_t
+kdtrace_proc_size()
+{
+
+       return(KDTRACE_PROC_SIZE);
+}
+
+void
+kdtrace_proc_ctor(void *arg, struct proc *p)
+{
+
+       p->p_dtrace = kmem_alloc(KDTRACE_PROC_SIZE, KM_SLEEP);
+       memset(p->p_dtrace, 0, KDTRACE_PROC_ZERO);
+}
+
+void
+kdtrace_proc_dtor(void *arg, struct proc *p)
+{
+
+       if (p->p_dtrace != NULL) {
+               kmem_free(p->p_dtrace, KDTRACE_PROC_SIZE);
+               p->p_dtrace = NULL;
+       }
+}
+
+/* Return the DTrace thread data size compiled in the kernel hooks. */
+size_t
+kdtrace_thread_size()
+{
+
+       return(KDTRACE_THREAD_SIZE);
+}
+
+void
+kdtrace_thread_ctor(void *arg, struct lwp *l)
+{
+
+       l->l_dtrace = kmem_alloc(KDTRACE_THREAD_SIZE, KM_SLEEP);
+       memset(l->l_dtrace, 0, KDTRACE_THREAD_ZERO);
+}
+
+void
+kdtrace_thread_dtor(void *arg, struct lwp *l)
+{
+
+       if (l->l_dtrace != NULL) {
+               kmem_free(l->l_dtrace, KDTRACE_THREAD_SIZE);
+               l->l_dtrace = NULL;
+       }
+}