/* * klist.h - Some generic list helpers, extending struct list_head a bit. * * Implementations are found in lib/klist.c * * * Copyright (C) 2005 Patrick Mochel * * This file is rleased under the GPL v2. */ #ifndef _LINUX_KLIST_H #define _LINUX_KLIST_H #include <linux/spinlock.h> #include <linux/completion.h> #include <linux/kref.h> #include <linux/list.h> struct klist_node; struct klist { spinlock_t k_lock; struct list_head k_list; void (*get)(struct klist_node *); void (*put)(struct klist_node *); }; #define KLIST_INIT(_name, _get, _put) \ { .k_lock = __SPIN_LOCK_UNLOCKED(_name.k_lock), \ .k_list = LIST_HEAD_INIT(_name.k_list), \ .get = _get, \ .put = _put, } #define DEFINE_KLIST(_name, _get, _put) \ struct klist _name = KLIST_INIT(_name, _get, _put) extern void klist_init(struct klist *k, void (*get)(struct klist_node *), void (*put)(struct klist_node *)); struct klist_node { void *n_klist; /* never access directly */ struct list_head n_node; struct kref n_ref; struct completion n_removed; }; extern void klist_add_tail(struct klist_node *n, struct klist *k); extern void klist_add_head(struct klist_node *n, struct klist *k); extern void klist_add_after(struct klist_node *n, struct klist_node *pos); extern void klist_add_before(struct klist_node *n, struct klist_node *pos); extern void klist_del(struct klist_node *n); extern void klist_remove(struct klist_node *n); extern int klist_node_attached(struct klist_node *n); struct klist_iter { struct klist *i_klist; struct klist_node *i_cur; }; extern void klist_iter_init(struct klist *k, struct klist_iter *i); extern void klist_iter_init_node(struct klist *k, struct klist_iter *i, struct klist_node *n); extern void klist_iter_exit(struct klist_iter *i); extern struct klist_node *klist_next(struct klist_iter *i); #endif