1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
/*
* multiorder.c: Multi-order radix tree entry testing
* Copyright (c) 2016 Intel Corporation
* Author: Ross Zwisler <ross.zwisler@linux.intel.com>
* Author: Matthew Wilcox <matthew.r.wilcox@intel.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*/
#include <linux/radix-tree.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include "test.h"
static void multiorder_check(unsigned long index, int order)
{
unsigned long i;
unsigned long min = index & ~((1UL << order) - 1);
unsigned long max = min + (1UL << order);
RADIX_TREE(tree, GFP_KERNEL);
printf("Multiorder index %ld, order %d\n", index, order);
assert(item_insert_order(&tree, index, order) == 0);
for (i = min; i < max; i++) {
struct item *item = item_lookup(&tree, i);
assert(item != 0);
assert(item->index == index);
}
for (i = 0; i < min; i++)
item_check_absent(&tree, i);
for (i = max; i < 2*max; i++)
item_check_absent(&tree, i);
assert(item_delete(&tree, index) != 0);
for (i = 0; i < 2*max; i++)
item_check_absent(&tree, i);
}
static void multiorder_shrink(unsigned long index, int order)
{
unsigned long i;
unsigned long max = 1 << order;
RADIX_TREE(tree, GFP_KERNEL);
struct radix_tree_node *node;
printf("Multiorder shrink index %ld, order %d\n", index, order);
assert(item_insert_order(&tree, 0, order) == 0);
node = tree.rnode;
assert(item_insert(&tree, index) == 0);
assert(node != tree.rnode);
assert(item_delete(&tree, index) != 0);
assert(node == tree.rnode);
for (i = 0; i < max; i++) {
struct item *item = item_lookup(&tree, i);
assert(item != 0);
assert(item->index == 0);
}
for (i = max; i < 2*max; i++)
item_check_absent(&tree, i);
if (!item_delete(&tree, 0)) {
printf("failed to delete index %ld (order %d)\n", index, order); abort();
}
for (i = 0; i < 2*max; i++)
item_check_absent(&tree, i);
}
void multiorder_checks(void)
{
int i;
for (i = 0; i < 20; i++) {
multiorder_check(200, i);
multiorder_check(0, i);
multiorder_check((1UL << i) + 1, i);
}
for (i = 0; i < 15; i++)
multiorder_shrink((1UL << (i + RADIX_TREE_MAP_SHIFT)), i);
}
|
