diff options
Diffstat (limited to 'tools/testing/radix-tree/test.c')
| -rw-r--r-- | tools/testing/radix-tree/test.c | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/tools/testing/radix-tree/test.c b/tools/testing/radix-tree/test.c new file mode 100644 index 000000000000..2bebf34cdc27 --- /dev/null +++ b/tools/testing/radix-tree/test.c @@ -0,0 +1,219 @@ +#include <stdlib.h> +#include <assert.h> +#include <stdio.h> +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/bitops.h> + +#include "test.h" + +struct item * +item_tag_set(struct radix_tree_root *root, unsigned long index, int tag) +{ + return radix_tree_tag_set(root, index, tag); +} + +struct item * +item_tag_clear(struct radix_tree_root *root, unsigned long index, int tag) +{ + return radix_tree_tag_clear(root, index, tag); +} + +int item_tag_get(struct radix_tree_root *root, unsigned long index, int tag) +{ + return radix_tree_tag_get(root, index, tag); +} + +int __item_insert(struct radix_tree_root *root, struct item *item) +{ + return radix_tree_insert(root, item->index, item); +} + +int item_insert(struct radix_tree_root *root, unsigned long index) +{ + return __item_insert(root, item_create(index)); +} + +int item_delete(struct radix_tree_root *root, unsigned long index) +{ + struct item *item = radix_tree_delete(root, index); + + if (item) { + assert(item->index == index); + free(item); + return 1; + } + return 0; +} + +struct item *item_create(unsigned long index) +{ + struct item *ret = malloc(sizeof(*ret)); + + ret->index = index; + return ret; +} + +void item_check_present(struct radix_tree_root *root, unsigned long index) +{ + struct item *item; + + item = radix_tree_lookup(root, index); + assert(item != 0); + assert(item->index == index); +} + +struct item *item_lookup(struct radix_tree_root *root, unsigned long index) +{ + return radix_tree_lookup(root, index); +} + +void item_check_absent(struct radix_tree_root *root, unsigned long index) +{ + struct item *item; + + item = radix_tree_lookup(root, index); + assert(item == 0); +} + +/* + * Scan only the passed (start, start+nr] for present items + */ +void item_gang_check_present(struct radix_tree_root *root, + unsigned long start, unsigned long nr, + int chunk, int hop) +{ + struct item *items[chunk]; + unsigned long into; + + for (into = 0; into < nr; ) { + int nfound; + int nr_to_find = chunk; + int i; + + if (nr_to_find > (nr - into)) + nr_to_find = nr - into; + + nfound = radix_tree_gang_lookup(root, (void **)items, + start + into, nr_to_find); + assert(nfound == nr_to_find); + for (i = 0; i < nfound; i++) + assert(items[i]->index == start + into + i); + into += hop; + } +} + +/* + * Scan the entire tree, only expecting present items (start, start+nr] + */ +void item_full_scan(struct radix_tree_root *root, unsigned long start, + unsigned long nr, int chunk) +{ + struct item *items[chunk]; + unsigned long into = 0; + unsigned long this_index = start; + int nfound; + int i; + +// printf("%s(0x%08lx, 0x%08lx, %d)\n", __FUNCTION__, start, nr, chunk); + + while ((nfound = radix_tree_gang_lookup(root, (void **)items, into, + chunk))) { +// printf("At 0x%08lx, nfound=%d\n", into, nfound); + for (i = 0; i < nfound; i++) { + assert(items[i]->index == this_index); + this_index++; + } +// printf("Found 0x%08lx->0x%08lx\n", +// items[0]->index, items[nfound-1]->index); + into = this_index; + } + if (chunk) + assert(this_index == start + nr); + nfound = radix_tree_gang_lookup(root, (void **)items, + this_index, chunk); + assert(nfound == 0); +} + +static int verify_node(struct radix_tree_node *slot, unsigned int tag, + unsigned int height, int tagged) +{ + int anyset = 0; + int i; + int j; + + slot = indirect_to_ptr(slot); + + /* Verify consistency at this level */ + for (i = 0; i < RADIX_TREE_TAG_LONGS; i++) { + if (slot->tags[tag][i]) { + anyset = 1; + break; + } + } + if (tagged != anyset) { + printf("tag: %u, height %u, tagged: %d, anyset: %d\n", tag, height, tagged, anyset); + for (j = 0; j < RADIX_TREE_MAX_TAGS; j++) { + printf("tag %d: ", j); + for (i = 0; i < RADIX_TREE_TAG_LONGS; i++) + printf("%016lx ", slot->tags[j][i]); + printf("\n"); + } + return 1; + } + assert(tagged == anyset); + + /* Go for next level */ + if (height > 1) { + for (i = 0; i < RADIX_TREE_MAP_SIZE; i++) + if (slot->slots[i]) + if (verify_node(slot->slots[i], tag, height - 1, + !!test_bit(i, slot->tags[tag]))) { + printf("Failure at off %d\n", i); + for (j = 0; j < RADIX_TREE_MAX_TAGS; j++) { + printf("tag %d: ", j); + for (i = 0; i < RADIX_TREE_TAG_LONGS; i++) + printf("%016lx ", slot->tags[j][i]); + printf("\n"); + } + return 1; + } + } + return 0; +} + +void verify_tag_consistency(struct radix_tree_root *root, unsigned int tag) +{ + if (!root->height) + return; + verify_node(root->rnode, tag, root->height, !!root_tag_get(root, tag)); +} + +void item_kill_tree(struct radix_tree_root *root) +{ + struct item *items[32]; + int nfound; + + while ((nfound = radix_tree_gang_lookup(root, (void **)items, 0, 32))) { + int i; + + for (i = 0; i < nfound; i++) { + void *ret; + + ret = radix_tree_delete(root, items[i]->index); + assert(ret == items[i]); + free(items[i]); + } + } + assert(radix_tree_gang_lookup(root, (void **)items, 0, 32) == 0); + assert(root->rnode == NULL); +} + +void tree_verify_min_height(struct radix_tree_root *root, int maxindex) +{ + assert(radix_tree_maxindex(root->height) >= maxindex); + if (root->height > 1) + assert(radix_tree_maxindex(root->height-1) < maxindex); + else if (root->height == 1) + assert(radix_tree_maxindex(root->height-1) <= maxindex); +} |