diff options
Diffstat (limited to 'kernel/include/linux/interval_tree.h')
| -rw-r--r-- | kernel/include/linux/interval_tree.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/kernel/include/linux/interval_tree.h b/kernel/include/linux/interval_tree.h new file mode 100644 index 000000000..724556aa3 --- /dev/null +++ b/kernel/include/linux/interval_tree.h @@ -0,0 +1,27 @@ +#ifndef _LINUX_INTERVAL_TREE_H +#define _LINUX_INTERVAL_TREE_H + +#include <linux/rbtree.h> + +struct interval_tree_node { + struct rb_node rb; + unsigned long start; /* Start of interval */ + unsigned long last; /* Last location _in_ interval */ + unsigned long __subtree_last; +}; + +extern void +interval_tree_insert(struct interval_tree_node *node, struct rb_root *root); + +extern void +interval_tree_remove(struct interval_tree_node *node, struct rb_root *root); + +extern struct interval_tree_node * +interval_tree_iter_first(struct rb_root *root, + unsigned long start, unsigned long last); + +extern struct interval_tree_node * +interval_tree_iter_next(struct interval_tree_node *node, + unsigned long start, unsigned long last); + +#endif /* _LINUX_INTERVAL_TREE_H */ |