From 147e615f83c2c36caf89e7a3bf78090ade6f266c Mon Sep 17 00:00:00 2001 From: Michel Lespinasse Date: Mon, 8 Oct 2012 16:31:30 -0700 Subject: prio_tree: remove After both prio_tree users have been converted to use red-black trees, there is no need to keep around the prio tree library anymore. Signed-off-by: Michel Lespinasse Cc: Rik van Riel Cc: Hillf Danton Cc: Peter Zijlstra Cc: Catalin Marinas Cc: Andrea Arcangeli Cc: David Woodhouse Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/prio_tree.h | 120 ---------------------------------------------- 1 file changed, 120 deletions(-) delete mode 100644 include/linux/prio_tree.h (limited to 'include/linux/prio_tree.h') 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 */ -- cgit v1.2.3