summaryrefslogtreecommitdiff
path: root/include/linux/prio_tree.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/prio_tree.h')
-rw-r--r--include/linux/prio_tree.h120
1 files changed, 0 insertions, 120 deletions
diff --git a/include/linux/prio_tree.h b/include/linux/prio_tree.h
deleted file mode 100644
index db04abb557e0..000000000000
--- a/include/linux/prio_tree.h
+++ /dev/null
@@ -1,120 +0,0 @@
-#ifndef _LINUX_PRIO_TREE_H
-#define _LINUX_PRIO_TREE_H
-
-/*
- * K&R 2nd ed. A8.3 somewhat obliquely hints that initial sequences of struct
- * fields with identical types should end up at the same location. We'll use
- * this until we can scrap struct raw_prio_tree_node.
- *
- * Note: all this could be done more elegantly by using unnamed union/struct
- * fields. However, gcc 2.95.3 and apparently also gcc 3.0.4 don't support this
- * language extension.
- */
-
-struct raw_prio_tree_node {
- struct prio_tree_node *left;
- struct prio_tree_node *right;
- struct prio_tree_node *parent;
-};
-
-struct prio_tree_node {
- struct prio_tree_node *left;
- struct prio_tree_node *right;
- struct prio_tree_node *parent;
- unsigned long start;
- unsigned long last; /* last location _in_ interval */
-};
-
-struct prio_tree_root {
- struct prio_tree_node *prio_tree_node;
- unsigned short index_bits;
- unsigned short raw;
- /*
- * 0: nodes are of type struct prio_tree_node
- * 1: nodes are of type raw_prio_tree_node
- */
-};
-
-struct prio_tree_iter {
- struct prio_tree_node *cur;
- unsigned long mask;
- unsigned long value;
- int size_level;
-
- struct prio_tree_root *root;
- pgoff_t r_index;
- pgoff_t h_index;
-};
-
-static inline void prio_tree_iter_init(struct prio_tree_iter *iter,
- struct prio_tree_root *root, pgoff_t r_index, pgoff_t h_index)
-{
- iter->root = root;
- iter->r_index = r_index;
- iter->h_index = h_index;
- iter->cur = NULL;
-}
-
-#define __INIT_PRIO_TREE_ROOT(ptr, _raw) \
-do { \
- (ptr)->prio_tree_node = NULL; \
- (ptr)->index_bits = 1; \
- (ptr)->raw = (_raw); \
-} while (0)
-
-#define INIT_PRIO_TREE_ROOT(ptr) __INIT_PRIO_TREE_ROOT(ptr, 0)
-#define INIT_RAW_PRIO_TREE_ROOT(ptr) __INIT_PRIO_TREE_ROOT(ptr, 1)
-
-#define INIT_PRIO_TREE_NODE(ptr) \
-do { \
- (ptr)->left = (ptr)->right = (ptr)->parent = (ptr); \
-} while (0)
-
-#define INIT_PRIO_TREE_ITER(ptr) \
-do { \
- (ptr)->cur = NULL; \
- (ptr)->mask = 0UL; \
- (ptr)->value = 0UL; \
- (ptr)->size_level = 0; \
-} while (0)
-
-#define prio_tree_entry(ptr, type, member) \
- ((type *)((char *)(ptr)-(unsigned long)(&((type *)0)->member)))
-
-static inline int prio_tree_empty(const struct prio_tree_root *root)
-{
- return root->prio_tree_node == NULL;
-}
-
-static inline int prio_tree_root(const struct prio_tree_node *node)
-{
- return node->parent == node;
-}
-
-static inline int prio_tree_left_empty(const struct prio_tree_node *node)
-{
- return node->left == node;
-}
-
-static inline int prio_tree_right_empty(const struct prio_tree_node *node)
-{
- return node->right == node;
-}
-
-
-struct prio_tree_node *prio_tree_replace(struct prio_tree_root *root,
- struct prio_tree_node *old, struct prio_tree_node *node);
-struct prio_tree_node *prio_tree_insert(struct prio_tree_root *root,
- struct prio_tree_node *node);
-void prio_tree_remove(struct prio_tree_root *root, struct prio_tree_node *node);
-struct prio_tree_node *prio_tree_next(struct prio_tree_iter *iter);
-
-#define raw_prio_tree_replace(root, old, node) \
- prio_tree_replace(root, (struct prio_tree_node *) (old), \
- (struct prio_tree_node *) (node))
-#define raw_prio_tree_insert(root, node) \
- prio_tree_insert(root, (struct prio_tree_node *) (node))
-#define raw_prio_tree_remove(root, node) \
- prio_tree_remove(root, (struct prio_tree_node *) (node))
-
-#endif /* _LINUX_PRIO_TREE_H */