1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #include <linux/gfp.h> 3 #include <linux/types.h> 4 #include <linux/radix-tree.h> 5 #include <linux/rcupdate.h> 6 7 struct item { 8 struct rcu_head rcu_head; 9 unsigned long index; 10 unsigned int order; 11 }; 12 13 struct item *item_create(unsigned long index, unsigned int order); 14 int __item_insert(struct radix_tree_root *root, struct item *item); 15 int item_insert(struct radix_tree_root *root, unsigned long index); 16 void item_sanity(struct item *item, unsigned long index); 17 int item_insert_order(struct radix_tree_root *root, unsigned long index, 18 unsigned order); 19 int item_delete(struct radix_tree_root *root, unsigned long index); 20 int item_delete_rcu(struct radix_tree_root *root, unsigned long index); 21 struct item *item_lookup(struct radix_tree_root *root, unsigned long index); 22 23 void item_check_present(struct radix_tree_root *root, unsigned long index); 24 void item_check_absent(struct radix_tree_root *root, unsigned long index); 25 void item_gang_check_present(struct radix_tree_root *root, 26 unsigned long start, unsigned long nr, 27 int chunk, int hop); 28 void item_full_scan(struct radix_tree_root *root, unsigned long start, 29 unsigned long nr, int chunk); 30 void item_kill_tree(struct radix_tree_root *root); 31 32 int tag_tagged_items(struct radix_tree_root *, pthread_mutex_t *, 33 unsigned long start, unsigned long end, unsigned batch, 34 unsigned iftag, unsigned thentag); 35 unsigned long find_item(struct radix_tree_root *, void *item); 36 37 void tag_check(void); 38 void multiorder_checks(void); 39 void iteration_test(unsigned order, unsigned duration); 40 void benchmark(void); 41 void idr_checks(void); 42 void ida_tests(void); 43 44 struct item * 45 item_tag_set(struct radix_tree_root *root, unsigned long index, int tag); 46 struct item * 47 item_tag_clear(struct radix_tree_root *root, unsigned long index, int tag); 48 int item_tag_get(struct radix_tree_root *root, unsigned long index, int tag); 49 void tree_verify_min_height(struct radix_tree_root *root, int maxindex); 50 void verify_tag_consistency(struct radix_tree_root *root, unsigned int tag); 51 52 extern int nr_allocated; 53 54 /* Normally private parts of lib/radix-tree.c */ 55 struct radix_tree_node *entry_to_node(void *ptr); 56 void radix_tree_dump(struct radix_tree_root *root); 57 int root_tag_get(struct radix_tree_root *root, unsigned int tag); 58 unsigned long node_maxindex(struct radix_tree_node *); 59 unsigned long shift_maxindex(unsigned int shift); 60 int radix_tree_cpu_dead(unsigned int cpu); 61 struct radix_tree_preload { 62 unsigned nr; 63 struct radix_tree_node *nodes; 64 }; 65 extern struct radix_tree_preload radix_tree_preloads; 66