include/linux/interval_tree.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _LINUX_INTERVAL_TREE_H
   3 #define _LINUX_INTERVAL_TREE_H
   4
   5 #include <linux/rbtree.h>
   6
   7 struct interval_tree_node {
   8         struct rb_node rb;
   9         unsigned long start;    /* Start of interval */
  10         unsigned long last;     /* Last location _in_ interval */
  11         unsigned long __subtree_last;
  12 };
  13
  14 extern void
  15 interval_tree_insert(struct interval_tree_node *node,
  16                      struct rb_root_cached *root);
  17
  18 extern void
  19 interval_tree_remove(struct interval_tree_node *node,
  20                      struct rb_root_cached *root);
  21
  22 extern struct interval_tree_node *
  23 interval_tree_iter_first(struct rb_root_cached *root,
  24                          unsigned long start, unsigned long last);
  25
  26 extern struct interval_tree_node *
  27 interval_tree_iter_next(struct interval_tree_node *node,
  28                         unsigned long start, unsigned long last);
  29
  30 #endif  /* _LINUX_INTERVAL_TREE_H */