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[src/trunk]: src/sys/external/bsd Rewrite hashtable.h locally so it might wor...
details: https://anonhg.NetBSD.org/src/rev/db1f4a98670f
branches: trunk
changeset: 992425:db1f4a98670f
user: riastradh <riastradh%NetBSD.org@localhost>
date: Mon Aug 27 06:23:19 2018 +0000
description:
Rewrite hashtable.h locally so it might work here.
diffstat:
sys/external/bsd/common/include/linux/list.h | 29 ++++++++-
sys/external/bsd/drm2/include/linux/hashtable.h | 85 ++++++++++++++----------
2 files changed, 78 insertions(+), 36 deletions(-)
diffs (165 lines):
diff -r e431619cbda2 -r db1f4a98670f sys/external/bsd/common/include/linux/list.h
--- a/sys/external/bsd/common/include/linux/list.h Mon Aug 27 06:19:26 2018 +0000
+++ b/sys/external/bsd/common/include/linux/list.h Mon Aug 27 06:23:19 2018 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: list.h,v 1.5 2014/08/20 15:26:52 riastradh Exp $ */
+/* $NetBSD: list.h,v 1.6 2018/08/27 06:23:19 riastradh Exp $ */
/*-
* Copyright (c) 2013 The NetBSD Foundation, Inc.
@@ -259,6 +259,25 @@
LIST_ENTRY(hlist_node) hln_entry;
};
+/*
+ * XXX This works only because LIST_HEAD_INITIALIZER doesn't actually
+ * use the name. Really, this is just initialization to a null
+ * pointer.
+ */
+#define HLIST_HEAD_INIT LIST_HEAD_INITIALIZER(dummy)
+
+static inline void
+INIT_HLIST_HEAD(struct hlist_head *head)
+{
+ LIST_INIT(head);
+}
+
+static inline bool
+hlist_empty(struct hlist_head *head)
+{
+ return LIST_EMPTY(head);
+}
+
static inline struct hlist_node *
hlist_first(struct hlist_head *head)
{
@@ -306,6 +325,14 @@
(VAR) = hlist_entry(LIST_NEXT(&(VAR)->FIELD, hln_entry), \
typeof(*(VAR)), FIELD))
+#define hlist_for_each_entry_safe(VAR, NEXT, HEAD, FIELD) \
+ for ((VAR) = hlist_entry(LIST_FIRST((HEAD)), typeof(*(VAR)), FIELD), \
+ (NEXT) = (&(VAR)->FIELD == NULL ? NULL : \
+ hlist_entry(LIST_NEXT(&(VAR)->FIELD, hln_entry), \
+ typeof(*(VAR)), FIELD)); \
+ &(VAR)->FIELD != NULL; \
+ (VAR) = (NEXT))
+
/*
* XXX The nominally RCU-safe APIs below lack dependent read barriers,
* so they're not actually RCU-safe...on the alpha, anyway. Someone^TM
diff -r e431619cbda2 -r db1f4a98670f sys/external/bsd/drm2/include/linux/hashtable.h
--- a/sys/external/bsd/drm2/include/linux/hashtable.h Mon Aug 27 06:19:26 2018 +0000
+++ b/sys/external/bsd/drm2/include/linux/hashtable.h Mon Aug 27 06:23:19 2018 +0000
@@ -1,61 +1,76 @@
-/* $OpenBSD$ */
-/*
- * Copyright (c) 2013, 2014, 2015 Mark Kettenis
- * Copyright (c) 2017 Martin Pieuchot
+/* $NetBSD: hashtable.h,v 1.4 2018/08/27 06:23:19 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.
*
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
+ * 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.
*
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ * 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_HASHTABLE_H_
#define _LINUX_HASHTABLE_H_
+#include <sys/cdefs.h>
+
#include <linux/list.h>
-#define DECLARE_HASHTABLE(name, bits) struct list_head name[1 << (bits)]
+/*
+ * XXX This assumes that HLIST_HEAD_INIT is just initialization to a
+ * null pointer.
+ */
+#define DECLARE_HASHTABLE(name, bits) \
+ struct hlist_head name[1u << (bits)] = { HLIST_HEAD_INIT }
static inline void
-__hash_init(struct list_head *table, u_int size)
+__hash_init(struct hlist_head *hash, unsigned n)
{
- u_int i;
- for (i = 0; i < size; i++)
- INIT_LIST_HEAD(&table[i]);
+ while (n --> 0)
+ INIT_HLIST_HEAD(&hash[n]);
}
static inline bool
-__hash_empty(struct list_head *table, u_int size)
+__hash_empty(struct hlist_head *hash, unsigned n)
{
- u_int i;
- for (i = 0; i < size; i++) {
- if (!list_empty(&table[i]))
+ while (n --> 0) {
+ if (!hlist_empty(&hash[n]))
return false;
}
return true;
}
-#define __hash(table, key) &table[key % (nitems(table) - 1)]
-
-#define hash_init(table) __hash_init(table, nitems(table))
-#define hash_add(table, node, key) \
- hlist_add_head(node, __hash(table, key))
-#define hash_del(node) hlist_del_init(node)
-#define hash_empty(table) __hash_empty(table, nitems(table))
-#define hash_for_each_possible(table, obj, member, key) \
- hlist_for_each_entry(obj, __hash(table, key), member)
-#define hash_for_each_safe(table, i, tmp, obj, member) \
- for (i = 0; i < nitems(table); i++) \
- list_for_each_entry_safe(obj, tmp, &table[i], member)
+#define hash_init(h) __hash_init((h), __arraycount(h))
+#define hash_add(h, n, k) hlist_add_head(n, &(h)[(k) % __arraycount(h)])
+#define hash_del(n) hlist_del_init(n)
+#define hash_empty(h) __hash_empty((h), __arraycount(h))
+#define hash_for_each_possible(h, n, f, k) \
+ hlist_for_each_entry(n, &(h)[(k) % __arraycount(h)], f)
+#define hash_for_each_safe(h, i, t, n, f) \
+ for ((i) = 0; (i) < __arraycount(h); (i)++) \
+ hlist_for_each_entry_safe(n, t, &(h)[i], f)
#endif /*_LINUX_HASHTABLE_H_*/
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