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radix tree test: Convert multiorder tests to XArray 

This is the last remaining user of the multiorder functionality of the
radix tree.  Test the XArray instead.

Signed-off-by: Matthew Wilcox <willy@infradead.org>
This commit is contained in:
Matthew Wilcox 2018-09-22 16:12:41 -04:00
parent b66b5a48b8
commit 542980aa93
1 changed files with 50 additions and 57 deletions
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107
tools/testing/radix-tree/multiorder.c
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@ -39,21 +39,20 @@ static int item_insert_order(struct xarray *xa, unsigned long index,
return xas_error(&xas);
}
void multiorder_iteration(void)
void multiorder_iteration(struct xarray *xa)
{
RADIX_TREE(tree, GFP_KERNEL);
struct radix_tree_iter iter;
void **slot;
XA_STATE(xas, xa, 0);
struct item *item;
int i, j, err;
printv(1, "Multiorder iteration test\n");
#define NUM_ENTRIES 11
int index[NUM_ENTRIES] = {0, 2, 4, 8, 16, 32, 34, 36, 64, 72, 128};
int order[NUM_ENTRIES] = {1, 1, 2, 3, 4, 1, 0, 1, 3, 0, 7};
printv(1, "Multiorder iteration test\n");
for (i = 0; i < NUM_ENTRIES; i++) {
err = item_insert_order(&tree, index[i], order[i]);
err = item_insert_order(xa, index[i], order[i]);
assert(!err);
}
@ -62,14 +61,14 @@ void multiorder_iteration(void)
if (j <= (index[i] | ((1 << order[i]) - 1)))
break;
radix_tree_for_each_slot(slot, &tree, &iter, j) {
int height = order[i] / RADIX_TREE_MAP_SHIFT;
int shift = height * RADIX_TREE_MAP_SHIFT;
xas_set(&xas, j);
xas_for_each(&xas, item, ULONG_MAX) {
int height = order[i] / XA_CHUNK_SHIFT;
int shift = height * XA_CHUNK_SHIFT;
unsigned long mask = (1UL << order[i]) - 1;
struct item *item = *slot;
assert((iter.index | mask) == (index[i] | mask));
assert(iter.shift == shift);
assert((xas.xa_index | mask) == (index[i] | mask));
assert(xas.xa_node->shift == shift);
assert(!radix_tree_is_internal_node(item));
assert((item->index | mask) == (index[i] | mask));
assert(item->order == order[i]);
@ -77,18 +76,15 @@ void multiorder_iteration(void)
}
}
item_kill_tree(&tree);
item_kill_tree(xa);
}
void multiorder_tagged_iteration(void)
void multiorder_tagged_iteration(struct xarray *xa)
{
RADIX_TREE(tree, GFP_KERNEL);
struct radix_tree_iter iter;
void **slot;
XA_STATE(xas, xa, 0);
struct item *item;
int i, j;
printv(1, "Multiorder tagged iteration test\n");
#define MT_NUM_ENTRIES 9
int index[MT_NUM_ENTRIES] = {0, 2, 4, 16, 32, 40, 64, 72, 128};
int order[MT_NUM_ENTRIES] = {1, 0, 2, 4, 3, 1, 3, 0, 7};
@ -96,13 +92,15 @@ void multiorder_tagged_iteration(void)
#define TAG_ENTRIES 7
int tag_index[TAG_ENTRIES] = {0, 4, 16, 40, 64, 72, 128};
for (i = 0; i < MT_NUM_ENTRIES; i++)
assert(!item_insert_order(&tree, index[i], order[i]));
printv(1, "Multiorder tagged iteration test\n");
assert(!radix_tree_tagged(&tree, 1));
for (i = 0; i < MT_NUM_ENTRIES; i++)
assert(!item_insert_order(xa, index[i], order[i]));
assert(!xa_marked(xa, XA_MARK_1));
for (i = 0; i < TAG_ENTRIES; i++)
assert(radix_tree_tag_set(&tree, tag_index[i], 1));
xa_set_mark(xa, tag_index[i], XA_MARK_1);
for (j = 0; j < 256; j++) {
int k;
@ -114,22 +112,22 @@ void multiorder_tagged_iteration(void)
break;
}
radix_tree_for_each_tagged(slot, &tree, &iter, j, 1) {
xas_set(&xas, j);
xas_for_each_marked(&xas, item, ULONG_MAX, XA_MARK_1) {
unsigned long mask;
struct item *item = *slot;
for (k = i; index[k] < tag_index[i]; k++)
;
mask = (1UL << order[k]) - 1;
assert((iter.index | mask) == (tag_index[i] | mask));
assert(!radix_tree_is_internal_node(item));
assert((xas.xa_index | mask) == (tag_index[i] | mask));
assert(!xa_is_internal(item));
assert((item->index | mask) == (tag_index[i] | mask));
assert(item->order == order[k]);
i++;
}
}
assert(tag_tagged_items(&tree, 0, ~0UL, TAG_ENTRIES, XA_MARK_1,
assert(tag_tagged_items(xa, 0, ULONG_MAX, TAG_ENTRIES, XA_MARK_1,
XA_MARK_2) == TAG_ENTRIES);
for (j = 0; j < 256; j++) {
@ -142,29 +140,31 @@ void multiorder_tagged_iteration(void)
break;
}
radix_tree_for_each_tagged(slot, &tree, &iter, j, 2) {
struct item *item = *slot;
xas_set(&xas, j);
xas_for_each_marked(&xas, item, ULONG_MAX, XA_MARK_2) {
for (k = i; index[k] < tag_index[i]; k++)
;
mask = (1 << order[k]) - 1;
assert((iter.index | mask) == (tag_index[i] | mask));
assert(!radix_tree_is_internal_node(item));
assert((xas.xa_index | mask) == (tag_index[i] | mask));
assert(!xa_is_internal(item));
assert((item->index | mask) == (tag_index[i] | mask));
assert(item->order == order[k]);
i++;
}
}
assert(tag_tagged_items(&tree, 1, ~0UL, MT_NUM_ENTRIES * 2, XA_MARK_1,
assert(tag_tagged_items(xa, 1, ULONG_MAX, MT_NUM_ENTRIES * 2, XA_MARK_1,
XA_MARK_0) == TAG_ENTRIES);
i = 0;
radix_tree_for_each_tagged(slot, &tree, &iter, 0, 0) {
assert(iter.index == tag_index[i]);
xas_set(&xas, 0);
xas_for_each_marked(&xas, item, ULONG_MAX, XA_MARK_0) {
assert(xas.xa_index == tag_index[i]);
i++;
}
assert(i == TAG_ENTRIES);
item_kill_tree(&tree);
item_kill_tree(xa);
}
bool stop_iteration = false;
@ -187,52 +187,45 @@ static void *creator_func(void *ptr)
static void *iterator_func(void *ptr)
{
struct radix_tree_root *tree = ptr;
struct radix_tree_iter iter;
XA_STATE(xas, ptr, 0);
struct item *item;
void **slot;
while (!stop_iteration) {
rcu_read_lock();
radix_tree_for_each_slot(slot, tree, &iter, 0) {
item = radix_tree_deref_slot(slot);
if (!item)
xas_for_each(&xas, item, ULONG_MAX) {
if (xas_retry(&xas, item))
continue;
if (radix_tree_deref_retry(item)) {
slot = radix_tree_iter_retry(&iter);
continue;
}
item_sanity(item, iter.index);
item_sanity(item, xas.xa_index);
}
rcu_read_unlock();
}
return NULL;
}
static void multiorder_iteration_race(void)
static void multiorder_iteration_race(struct xarray *xa)
{
const int num_threads = sysconf(_SC_NPROCESSORS_ONLN);
pthread_t worker_thread[num_threads];
RADIX_TREE(tree, GFP_KERNEL);
int i;
pthread_create(&worker_thread[0], NULL, &creator_func, &tree);
pthread_create(&worker_thread[0], NULL, &creator_func, xa);
for (i = 1; i < num_threads; i++)
pthread_create(&worker_thread[i], NULL, &iterator_func, &tree);
pthread_create(&worker_thread[i], NULL, &iterator_func, xa);
for (i = 0; i < num_threads; i++)
pthread_join(worker_thread[i], NULL);
item_kill_tree(&tree);
item_kill_tree(xa);
}
static DEFINE_XARRAY(array);
void multiorder_checks(void)
{
multiorder_iteration();
multiorder_tagged_iteration();
multiorder_iteration_race();
multiorder_iteration(&array);
multiorder_tagged_iteration(&array);
multiorder_iteration_race(&array);
radix_tree_cpu_dead(0);
}