forked from mirrors/linux
b66b5a48b8
In preparation for the removal of the multiorder radix tree code, convert item_delete_rcu() to use the XArray so it can still be called for XArrays containing multi-index entries. Signed-off-by: Matthew Wilcox <willy@infradead.org>
62 lines
2.3 KiB
C
62 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#include <linux/gfp.h>
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#include <linux/types.h>
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#include <linux/radix-tree.h>
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#include <linux/rcupdate.h>
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struct item {
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struct rcu_head rcu_head;
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unsigned long index;
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unsigned int order;
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};
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struct item *item_create(unsigned long index, unsigned int order);
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int item_insert(struct radix_tree_root *root, unsigned long index);
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void item_sanity(struct item *item, unsigned long index);
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void item_free(struct item *item, unsigned long index);
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int item_delete(struct radix_tree_root *root, unsigned long index);
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int item_delete_rcu(struct xarray *xa, unsigned long index);
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struct item *item_lookup(struct radix_tree_root *root, unsigned long index);
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void item_check_present(struct radix_tree_root *root, unsigned long index);
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void item_check_absent(struct radix_tree_root *root, unsigned long index);
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void item_gang_check_present(struct radix_tree_root *root,
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unsigned long start, unsigned long nr,
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int chunk, int hop);
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void item_full_scan(struct radix_tree_root *root, unsigned long start,
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unsigned long nr, int chunk);
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void item_kill_tree(struct radix_tree_root *root);
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int tag_tagged_items(struct xarray *, unsigned long start, unsigned long end,
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unsigned batch, xa_mark_t iftag, xa_mark_t thentag);
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void xarray_tests(void);
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void tag_check(void);
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void multiorder_checks(void);
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void iteration_test(unsigned order, unsigned duration);
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void benchmark(void);
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void idr_checks(void);
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void ida_tests(void);
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struct item *
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item_tag_set(struct radix_tree_root *root, unsigned long index, int tag);
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struct item *
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item_tag_clear(struct radix_tree_root *root, unsigned long index, int tag);
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int item_tag_get(struct radix_tree_root *root, unsigned long index, int tag);
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void tree_verify_min_height(struct radix_tree_root *root, int maxindex);
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void verify_tag_consistency(struct radix_tree_root *root, unsigned int tag);
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extern int nr_allocated;
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/* Normally private parts of lib/radix-tree.c */
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struct radix_tree_node *entry_to_node(void *ptr);
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void radix_tree_dump(struct radix_tree_root *root);
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int root_tag_get(struct radix_tree_root *root, unsigned int tag);
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unsigned long node_maxindex(struct radix_tree_node *);
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unsigned long shift_maxindex(unsigned int shift);
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int radix_tree_cpu_dead(unsigned int cpu);
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struct radix_tree_preload {
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unsigned nr;
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struct radix_tree_node *nodes;
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};
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extern struct radix_tree_preload radix_tree_preloads;
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