Root/
1 | /************************************************************************** |
2 | * |
3 | * Copyright 2006 Tungsten Graphics, Inc., Bismack, ND. USA. |
4 | * All Rights Reserved. |
5 | * |
6 | * Permission is hereby granted, free of charge, to any person obtaining a |
7 | * copy of this software and associated documentation files (the |
8 | * "Software"), to deal in the Software without restriction, including |
9 | * without limitation the rights to use, copy, modify, merge, publish, |
10 | * distribute, sub license, and/or sell copies of the Software, and to |
11 | * permit persons to whom the Software is furnished to do so, subject to |
12 | * the following conditions: |
13 | * |
14 | * The above copyright notice and this permission notice (including the |
15 | * next paragraph) shall be included in all copies or substantial portions |
16 | * of the Software. |
17 | * |
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
20 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
21 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, |
22 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
23 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
24 | * USE OR OTHER DEALINGS IN THE SOFTWARE. |
25 | * |
26 | * |
27 | **************************************************************************/ |
28 | /* |
29 | * Simple open hash tab implementation. |
30 | * |
31 | * Authors: |
32 | * Thomas Hellström <thomas-at-tungstengraphics-dot-com> |
33 | */ |
34 | |
35 | #ifndef DRM_HASHTAB_H |
36 | #define DRM_HASHTAB_H |
37 | |
38 | #include <linux/list.h> |
39 | |
40 | #define drm_hash_entry(_ptr, _type, _member) container_of(_ptr, _type, _member) |
41 | |
42 | struct drm_hash_item { |
43 | struct hlist_node head; |
44 | unsigned long key; |
45 | }; |
46 | |
47 | struct drm_open_hash { |
48 | struct hlist_head *table; |
49 | u8 order; |
50 | }; |
51 | |
52 | extern int drm_ht_create(struct drm_open_hash *ht, unsigned int order); |
53 | extern int drm_ht_insert_item(struct drm_open_hash *ht, struct drm_hash_item *item); |
54 | extern int drm_ht_just_insert_please(struct drm_open_hash *ht, struct drm_hash_item *item, |
55 | unsigned long seed, int bits, int shift, |
56 | unsigned long add); |
57 | extern int drm_ht_find_item(struct drm_open_hash *ht, unsigned long key, struct drm_hash_item **item); |
58 | |
59 | extern void drm_ht_verbose_list(struct drm_open_hash *ht, unsigned long key); |
60 | extern int drm_ht_remove_key(struct drm_open_hash *ht, unsigned long key); |
61 | extern int drm_ht_remove_item(struct drm_open_hash *ht, struct drm_hash_item *item); |
62 | extern void drm_ht_remove(struct drm_open_hash *ht); |
63 | |
64 | /* |
65 | * RCU-safe interface |
66 | * |
67 | * The user of this API needs to make sure that two or more instances of the |
68 | * hash table manipulation functions are never run simultaneously. |
69 | * The lookup function drm_ht_find_item_rcu may, however, run simultaneously |
70 | * with any of the manipulation functions as long as it's called from within |
71 | * an RCU read-locked section. |
72 | */ |
73 | #define drm_ht_insert_item_rcu drm_ht_insert_item |
74 | #define drm_ht_just_insert_please_rcu drm_ht_just_insert_please |
75 | #define drm_ht_remove_key_rcu drm_ht_remove_key |
76 | #define drm_ht_remove_item_rcu drm_ht_remove_item |
77 | #define drm_ht_find_item_rcu drm_ht_find_item |
78 | |
79 | #endif |
80 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9