[src/trunk]: src/sys/external/bsd/drm2/include/linux Define Linux array_size ...

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

details:   https://anonhg.NetBSD.org/src/rev/82d45567122d
branches:  trunk
changeset: 1027860:82d45567122d
user:      riastradh <riastradh%NetBSD.org@localhost>
date:      Sun Dec 19 00:59:01 2021 +0000

description:
Define Linux array_size function and expose via vmalloc.h.

diffstat:

 sys/external/bsd/drm2/include/linux/overflow.h |  48 ++++++++++++++++++++++++++
 sys/external/bsd/drm2/include/linux/vmalloc.h  |   3 +-
 2 files changed, 50 insertions(+), 1 deletions(-)

diffs (69 lines):

diff -r a8880d27e98d -r 82d45567122d sys/external/bsd/drm2/include/linux/overflow.h
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/external/bsd/drm2/include/linux/overflow.h    Sun Dec 19 00:59:01 2021 +0000
@@ -0,0 +1,48 @@
+/*     $NetBSD: overflow.h,v 1.1 2021/12/19 00:59:01 riastradh Exp $   */
+
+/*-
+ * Copyright (c) 2018 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Taylor R. Campbell.
+ *
+ * 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 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.
+ */
+
+#ifndef _LINUX_OVERFLOW_H_
+#define _LINUX_OVERFLOW_H_
+
+#include <sys/types.h>
+
+static inline size_t
+array_size(size_t nelem, size_t elemsize)
+{
+
+       KASSERT(elemsize != 0);
+       if (nelem >= SIZE_MAX/elemsize)
+               return SIZE_MAX;
+
+       return nelem*elemsize;
+}
+
+#endif  /* _LINUX_OVERFLOW_H_ */
diff -r a8880d27e98d -r 82d45567122d sys/external/bsd/drm2/include/linux/vmalloc.h
--- a/sys/external/bsd/drm2/include/linux/vmalloc.h     Sun Dec 19 00:58:50 2021 +0000
+++ b/sys/external/bsd/drm2/include/linux/vmalloc.h     Sun Dec 19 00:59:01 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: vmalloc.h,v 1.7 2018/08/27 14:40:56 riastradh Exp $    */
+/*     $NetBSD: vmalloc.h,v 1.8 2021/12/19 00:59:01 riastradh Exp $    */
 
 /*-
  * Copyright (c) 2013, 2018 The NetBSD Foundation, Inc.
@@ -37,6 +37,7 @@
 #include <uvm/uvm_extern.h>
 
 #include <linux/mm_types.h>
+#include <linux/overflow.h>
 
 #include <asm/page.h>