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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-07-15 07:44:51 +0200
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-07-15 07:44:51 +0200
commit43d2548bb2ef7e6d753f91468a746784041e522d (patch)
tree77d13fcd48fd998393abb825ec36e2b732684a73 /include/drm/drm_hashtab.h
parentpowerpc: Fix pte_update for CONFIG_PTE_64BIT and !PTE_ATOMIC_UPDATES (diff)
parentMerge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm (diff)
downloadlinux-43d2548bb2ef7e6d753f91468a746784041e522d.tar.xz
linux-43d2548bb2ef7e6d753f91468a746784041e522d.zip
Merge commit '85082fd7cbe3173198aac0eb5e85ab1edcc6352c' into test-build
Manual fixup of: arch/powerpc/Kconfig
Diffstat (limited to 'include/drm/drm_hashtab.h')
-rw-r--r--include/drm/drm_hashtab.h67
1 files changed, 67 insertions, 0 deletions
diff --git a/include/drm/drm_hashtab.h b/include/drm/drm_hashtab.h
new file mode 100644
index 000000000000..cd2b189e1be6
--- /dev/null
+++ b/include/drm/drm_hashtab.h
@@ -0,0 +1,67 @@
+/**************************************************************************
+ *
+ * Copyright 2006 Tungsten Graphics, Inc., Bismack, ND. USA.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ *
+ **************************************************************************/
+/*
+ * Simple open hash tab implementation.
+ *
+ * Authors:
+ * Thomas Hellström <thomas-at-tungstengraphics-dot-com>
+ */
+
+#ifndef DRM_HASHTAB_H
+#define DRM_HASHTAB_H
+
+#define drm_hash_entry(_ptr, _type, _member) container_of(_ptr, _type, _member)
+
+struct drm_hash_item {
+ struct hlist_node head;
+ unsigned long key;
+};
+
+struct drm_open_hash {
+ unsigned int size;
+ unsigned int order;
+ unsigned int fill;
+ struct hlist_head *table;
+ int use_vmalloc;
+};
+
+
+extern int drm_ht_create(struct drm_open_hash *ht, unsigned int order);
+extern int drm_ht_insert_item(struct drm_open_hash *ht, struct drm_hash_item *item);
+extern int drm_ht_just_insert_please(struct drm_open_hash *ht, struct drm_hash_item *item,
+ unsigned long seed, int bits, int shift,
+ unsigned long add);
+extern int drm_ht_find_item(struct drm_open_hash *ht, unsigned long key, struct drm_hash_item **item);
+
+extern void drm_ht_verbose_list(struct drm_open_hash *ht, unsigned long key);
+extern int drm_ht_remove_key(struct drm_open_hash *ht, unsigned long key);
+extern int drm_ht_remove_item(struct drm_open_hash *ht, struct drm_hash_item *item);
+extern void drm_ht_remove(struct drm_open_hash *ht);
+
+
+#endif