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1 | /* |
2 | * klist.h - Some generic list helpers, extending struct list_head a bit. |
3 | * |
4 | * Implementations are found in lib/klist.c |
5 | * |
6 | * |
7 | * Copyright (C) 2005 Patrick Mochel |
8 | * |
9 | * This file is rleased under the GPL v2. |
10 | */ |
11 | |
12 | #include <linux/spinlock.h> |
13 | #include <linux/completion.h> |
14 | #include <linux/kref.h> |
15 | #include <linux/list.h> |
16 | |
17 | |
18 | struct klist { |
19 | spinlock_t k_lock; |
20 | struct list_head k_list; |
21 | }; |
22 | |
23 | |
24 | extern void klist_init(struct klist * k); |
25 | |
26 | |
27 | struct klist_node { |
28 | struct klist * n_klist; |
29 | struct list_head n_node; |
30 | struct kref n_ref; |
31 | struct completion n_removed; |
32 | }; |
33 | |
34 | extern void klist_add_tail(struct klist * k, struct klist_node * n); |
35 | extern void klist_add_head(struct klist * k, struct klist_node * n); |
36 | |
37 | extern void klist_del(struct klist_node * n); |
38 | extern void klist_remove(struct klist_node * n); |
39 | |
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40 | extern int klist_node_attached(struct klist_node * n); |
41 | |
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42 | |
43 | struct klist_iter { |
44 | struct klist * i_klist; |
45 | struct list_head * i_head; |
46 | struct klist_node * i_cur; |
47 | }; |
48 | |
49 | |
50 | extern void klist_iter_init(struct klist * k, struct klist_iter * i); |
51 | extern void klist_iter_init_node(struct klist * k, struct klist_iter * i, |
52 | struct klist_node * n); |
53 | extern void klist_iter_exit(struct klist_iter * i); |
54 | extern struct klist_node * klist_next(struct klist_iter * i); |
55 | |