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gerrit-public.fairphone.software / kernel / msm-4.9 / 3f368a0d58cb8cadab298546286f94ca14220f65 / . / include / linux / klist.h
blob: 74071254c9d38c348b0bba649d9e8c9ebb4cb049 [file] [log] [blame]
mochel@digitalimplant.org9a19fea2005-03-21 11:45:16 -0800[diff] [blame]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
James Bottomleyd856f1e32005-08-19 09:14:01 -0400[diff] [blame]12#ifndef _LINUX_KLIST_H
13#define _LINUX_KLIST_H
14
mochel@digitalimplant.org9a19fea2005-03-21 11:45:16 -0800[diff] [blame]15#include <linux/spinlock.h>
16#include <linux/completion.h>
17#include <linux/kref.h>
18#include <linux/list.h>
19
James Bottomley34bb61f2005-09-06 16:56:51 -0700[diff] [blame]20struct klist_node;
mochel@digitalimplant.org9a19fea2005-03-21 11:45:16 -0800[diff] [blame]21struct klist {
22 spinlock_t k_lock;
23 struct list_head k_list;
James Bottomley34bb61f2005-09-06 16:56:51 -0700[diff] [blame]24 void (*get)(struct klist_node *);
25 void (*put)(struct klist_node *);
mochel@digitalimplant.org9a19fea2005-03-21 11:45:16 -0800[diff] [blame]26};
27
28
James Bottomley34bb61f2005-09-06 16:56:51 -0700[diff] [blame]29extern void klist_init(struct klist * k, void (*get)(struct klist_node *),
30 void (*put)(struct klist_node *));
mochel@digitalimplant.org9a19fea2005-03-21 11:45:16 -0800[diff] [blame]31
32struct klist_node {
33 struct klist * n_klist;
34 struct list_head n_node;
35 struct kref n_ref;
36 struct completion n_removed;
37};
38
James Bottomleyd856f1e32005-08-19 09:14:01 -0400[diff] [blame]39extern void klist_add_tail(struct klist_node * n, struct klist * k);
40extern void klist_add_head(struct klist_node * n, struct klist * k);
mochel@digitalimplant.org9a19fea2005-03-21 11:45:16 -0800[diff] [blame]41
42extern void klist_del(struct klist_node * n);
43extern void klist_remove(struct klist_node * n);
44
mochel@digitalimplant.org8b0c2502005-03-24 12:58:57 -0800[diff] [blame]45extern int klist_node_attached(struct klist_node * n);
46
mochel@digitalimplant.org9a19fea2005-03-21 11:45:16 -0800[diff] [blame]47
48struct klist_iter {
49 struct klist * i_klist;
50 struct list_head * i_head;
51 struct klist_node * i_cur;
52};
53
54
55extern void klist_iter_init(struct klist * k, struct klist_iter * i);
56extern void klist_iter_init_node(struct klist * k, struct klist_iter * i,
57 struct klist_node * n);
58extern void klist_iter_exit(struct klist_iter * i);
59extern struct klist_node * klist_next(struct klist_iter * i);
60
James Bottomleyd856f1e32005-08-19 09:14:01 -0400[diff] [blame]61#endif