Commit | Line | Data |
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9a19fea4 | 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 | ||
d856f1e3 JB |
12 | #ifndef _LINUX_KLIST_H |
13 | #define _LINUX_KLIST_H | |
14 | ||
9a19fea4 | 15 | #include <linux/spinlock.h> |
16 | #include <linux/completion.h> | |
17 | #include <linux/kref.h> | |
18 | #include <linux/list.h> | |
19 | ||
34bb61f9 | 20 | struct klist_node; |
9a19fea4 | 21 | struct klist { |
22 | spinlock_t k_lock; | |
23 | struct list_head k_list; | |
34bb61f9 JB |
24 | void (*get)(struct klist_node *); |
25 | void (*put)(struct klist_node *); | |
9a19fea4 | 26 | }; |
27 | ||
1da43e4a TH |
28 | #define KLIST_INIT(_name, _get, _put) \ |
29 | { .k_lock = __SPIN_LOCK_UNLOCKED(_name.k_lock), \ | |
30 | .k_list = LIST_HEAD_INIT(_name.k_list), \ | |
31 | .get = _get, \ | |
32 | .put = _put, } | |
33 | ||
34 | #define DEFINE_KLIST(_name, _get, _put) \ | |
35 | struct klist _name = KLIST_INIT(_name, _get, _put) | |
9a19fea4 | 36 | |
c3bb7fad | 37 | extern void klist_init(struct klist *k, void (*get)(struct klist_node *), |
34bb61f9 | 38 | void (*put)(struct klist_node *)); |
9a19fea4 | 39 | |
40 | struct klist_node { | |
a1ed5b0c | 41 | void *n_klist; /* never access directly */ |
9a19fea4 | 42 | struct list_head n_node; |
43 | struct kref n_ref; | |
44 | struct completion n_removed; | |
45 | }; | |
46 | ||
c3bb7fad GKH |
47 | extern void klist_add_tail(struct klist_node *n, struct klist *k); |
48 | extern void klist_add_head(struct klist_node *n, struct klist *k); | |
93dd4001 TH |
49 | extern void klist_add_after(struct klist_node *n, struct klist_node *pos); |
50 | extern void klist_add_before(struct klist_node *n, struct klist_node *pos); | |
9a19fea4 | 51 | |
c3bb7fad GKH |
52 | extern void klist_del(struct klist_node *n); |
53 | extern void klist_remove(struct klist_node *n); | |
9a19fea4 | 54 | |
c3bb7fad | 55 | extern int klist_node_attached(struct klist_node *n); |
8b0c250b | 56 | |
9a19fea4 | 57 | |
58 | struct klist_iter { | |
c3bb7fad | 59 | struct klist *i_klist; |
c3bb7fad | 60 | struct klist_node *i_cur; |
9a19fea4 | 61 | }; |
62 | ||
63 | ||
c3bb7fad GKH |
64 | extern void klist_iter_init(struct klist *k, struct klist_iter *i); |
65 | extern void klist_iter_init_node(struct klist *k, struct klist_iter *i, | |
66 | struct klist_node *n); | |
67 | extern void klist_iter_exit(struct klist_iter *i); | |
68 | extern struct klist_node *klist_next(struct klist_iter *i); | |
9a19fea4 | 69 | |
d856f1e3 | 70 | #endif |