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xarray: Move multiorder_shrink to kernel tests

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Test this functionality inside the kernel as well as in userspace.
Also remove insert_bug() as there's no comparable thing to test
in the XArray code.

Signed-off-by: Matthew Wilcox <willy@infradead.org>
This commit is contained in:
Matthew Wilcox
2018-09-08 12:09:52 -04:00
parent d6427f8179
commit 93eb07f72c
2 changed files with 37 additions and 173 deletions
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173
tools/testing/radix-tree/multiorder.c
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@@ -20,127 +20,6 @@
#include "test.h"
#define for_each_index(i, base, order) \
for (i = base; i < base + (1 << order); i++)
static void __multiorder_tag_test(int index, int order)
{
RADIX_TREE(tree, GFP_KERNEL);
int base, err, i;
/* our canonical entry */
base = index & ~((1 << order) - 1);
printv(2, "Multiorder tag test with index %d, canonical entry %d\n",
index, base);
err = item_insert_order(&tree, index, order);
assert(!err);
/*
* Verify we get collisions for covered indices. We try and fail to
* insert a value entry so we don't leak memory via
* item_insert_order().
*/
for_each_index(i, base, order) {
err = __radix_tree_insert(&tree, i, order, xa_mk_value(0xA0));
assert(err == -EEXIST);
}
for_each_index(i, base, order) {
assert(!radix_tree_tag_get(&tree, i, 0));
assert(!radix_tree_tag_get(&tree, i, 1));
}
assert(radix_tree_tag_set(&tree, index, 0));
for_each_index(i, base, order) {
assert(radix_tree_tag_get(&tree, i, 0));
assert(!radix_tree_tag_get(&tree, i, 1));
}
assert(tag_tagged_items(&tree, 0, ~0UL, 10, XA_MARK_0, XA_MARK_1) == 1);
assert(radix_tree_tag_clear(&tree, index, 0));
for_each_index(i, base, order) {
assert(!radix_tree_tag_get(&tree, i, 0));
assert(radix_tree_tag_get(&tree, i, 1));
}
assert(radix_tree_tag_clear(&tree, index, 1));
assert(!radix_tree_tagged(&tree, 0));
assert(!radix_tree_tagged(&tree, 1));
item_kill_tree(&tree);
}
static void __multiorder_tag_test2(unsigned order, unsigned long index2)
{
RADIX_TREE(tree, GFP_KERNEL);
unsigned long index = (1 << order);
index2 += index;
assert(item_insert_order(&tree, 0, order) == 0);
assert(item_insert(&tree, index2) == 0);
assert(radix_tree_tag_set(&tree, 0, 0));
assert(radix_tree_tag_set(&tree, index2, 0));
assert(tag_tagged_items(&tree, 0, ~0UL, 10, XA_MARK_0, XA_MARK_1) == 2);
item_kill_tree(&tree);
}
static void multiorder_tag_tests(void)
{
int i, j;
/* test multi-order entry for indices 0-7 with no sibling pointers */
__multiorder_tag_test(0, 3);
__multiorder_tag_test(5, 3);
/* test multi-order entry for indices 8-15 with no sibling pointers */
__multiorder_tag_test(8, 3);
__multiorder_tag_test(15, 3);
/*
* Our order 5 entry covers indices 0-31 in a tree with height=2.
* This is broken up as follows:
* 0-7: canonical entry
* 8-15: sibling 1
* 16-23: sibling 2
* 24-31: sibling 3
*/
__multiorder_tag_test(0, 5);
__multiorder_tag_test(29, 5);
/* same test, but with indices 32-63 */
__multiorder_tag_test(32, 5);
__multiorder_tag_test(44, 5);
/*
* Our order 8 entry covers indices 0-255 in a tree with height=3.
* This is broken up as follows:
* 0-63: canonical entry
* 64-127: sibling 1
* 128-191: sibling 2
* 192-255: sibling 3
*/
__multiorder_tag_test(0, 8);
__multiorder_tag_test(190, 8);
/* same test, but with indices 256-511 */
__multiorder_tag_test(256, 8);
__multiorder_tag_test(300, 8);
__multiorder_tag_test(0x12345678UL, 8);
for (i = 1; i < 10; i++)
for (j = 0; j < (10 << i); j++)
__multiorder_tag_test2(i, j);
}
static void multiorder_check(unsigned long index, int order)
{
unsigned long i;
@@ -181,53 +60,6 @@ static void multiorder_check(unsigned long index, int order)
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;
printv(2, "Multiorder shrink index %ld, order %d\n", index, order);
assert(item_insert_order(&tree, 0, order) == 0);
node = tree.xa_head;
assert(item_insert(&tree, index) == 0);
assert(node != tree.xa_head);
assert(item_delete(&tree, index) != 0);
assert(node == tree.xa_head);
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)) {
printv(2, "failed to delete index %ld (order %d)\n", index, order);
abort();
}
for (i = 0; i < 2*max; i++)
item_check_absent(&tree, i);
}
static void multiorder_insert_bug(void)
{
RADIX_TREE(tree, GFP_KERNEL);
item_insert(&tree, 0);
radix_tree_tag_set(&tree, 0, 0);
item_insert_order(&tree, 3 << 6, 6);
item_kill_tree(&tree);
}
void multiorder_iteration(void)
{
RADIX_TREE(tree, GFP_KERNEL);
@@ -427,11 +259,6 @@ void multiorder_checks(void)
multiorder_check((1UL << i) + 1, i);
}
for (i = 0; i < 15; i++)
multiorder_shrink((1UL << (i + RADIX_TREE_MAP_SHIFT)), i);
multiorder_insert_bug();
multiorder_tag_tests();
multiorder_iteration();
multiorder_tagged_iteration();
multiorder_iteration_race();