diff options
Diffstat (limited to 'lib/test_objagg.c')
| -rw-r--r-- | lib/test_objagg.c | 1021 |
1 files changed, 1021 insertions, 0 deletions
diff --git a/lib/test_objagg.c b/lib/test_objagg.c new file mode 100644 index 0000000000..c0c957c506 --- /dev/null +++ b/lib/test_objagg.c @@ -0,0 +1,1021 @@ +// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 +/* Copyright (c) 2018 Mellanox Technologies. All rights reserved */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/random.h> +#include <linux/objagg.h> + +struct tokey { + unsigned int id; +}; + +#define NUM_KEYS 32 + +static int key_id_index(unsigned int key_id) +{ + if (key_id >= NUM_KEYS) { + WARN_ON(1); + return 0; + } + return key_id; +} + +#define BUF_LEN 128 + +struct world { + unsigned int root_count; + unsigned int delta_count; + char next_root_buf[BUF_LEN]; + struct objagg_obj *objagg_objs[NUM_KEYS]; + unsigned int key_refs[NUM_KEYS]; +}; + +struct root { + struct tokey key; + char buf[BUF_LEN]; +}; + +struct delta { + unsigned int key_id_diff; +}; + +static struct objagg_obj *world_obj_get(struct world *world, + struct objagg *objagg, + unsigned int key_id) +{ + struct objagg_obj *objagg_obj; + struct tokey key; + int err; + + key.id = key_id; + objagg_obj = objagg_obj_get(objagg, &key); + if (IS_ERR(objagg_obj)) { + pr_err("Key %u: Failed to get object.\n", key_id); + return objagg_obj; + } + if (!world->key_refs[key_id_index(key_id)]) { + world->objagg_objs[key_id_index(key_id)] = objagg_obj; + } else if (world->objagg_objs[key_id_index(key_id)] != objagg_obj) { + pr_err("Key %u: God another object for the same key.\n", + key_id); + err = -EINVAL; + goto err_key_id_check; + } + world->key_refs[key_id_index(key_id)]++; + return objagg_obj; + +err_key_id_check: + objagg_obj_put(objagg, objagg_obj); + return ERR_PTR(err); +} + +static void world_obj_put(struct world *world, struct objagg *objagg, + unsigned int key_id) +{ + struct objagg_obj *objagg_obj; + + if (!world->key_refs[key_id_index(key_id)]) + return; + objagg_obj = world->objagg_objs[key_id_index(key_id)]; + objagg_obj_put(objagg, objagg_obj); + world->key_refs[key_id_index(key_id)]--; +} + +#define MAX_KEY_ID_DIFF 5 + +static bool delta_check(void *priv, const void *parent_obj, const void *obj) +{ + const struct tokey *parent_key = parent_obj; + const struct tokey *key = obj; + int diff = key->id - parent_key->id; + + return diff >= 0 && diff <= MAX_KEY_ID_DIFF; +} + +static void *delta_create(void *priv, void *parent_obj, void *obj) +{ + struct tokey *parent_key = parent_obj; + struct world *world = priv; + struct tokey *key = obj; + int diff = key->id - parent_key->id; + struct delta *delta; + + if (!delta_check(priv, parent_obj, obj)) + return ERR_PTR(-EINVAL); + + delta = kzalloc(sizeof(*delta), GFP_KERNEL); + if (!delta) + return ERR_PTR(-ENOMEM); + delta->key_id_diff = diff; + world->delta_count++; + return delta; +} + +static void delta_destroy(void *priv, void *delta_priv) +{ + struct delta *delta = delta_priv; + struct world *world = priv; + + world->delta_count--; + kfree(delta); +} + +static void *root_create(void *priv, void *obj, unsigned int id) +{ + struct world *world = priv; + struct tokey *key = obj; + struct root *root; + + root = kzalloc(sizeof(*root), GFP_KERNEL); + if (!root) + return ERR_PTR(-ENOMEM); + memcpy(&root->key, key, sizeof(root->key)); + memcpy(root->buf, world->next_root_buf, sizeof(root->buf)); + world->root_count++; + return root; +} + +static void root_destroy(void *priv, void *root_priv) +{ + struct root *root = root_priv; + struct world *world = priv; + + world->root_count--; + kfree(root); +} + +static int test_nodelta_obj_get(struct world *world, struct objagg *objagg, + unsigned int key_id, bool should_create_root) +{ + unsigned int orig_root_count = world->root_count; + struct objagg_obj *objagg_obj; + const struct root *root; + int err; + + if (should_create_root) + get_random_bytes(world->next_root_buf, + sizeof(world->next_root_buf)); + + objagg_obj = world_obj_get(world, objagg, key_id); + if (IS_ERR(objagg_obj)) { + pr_err("Key %u: Failed to get object.\n", key_id); + return PTR_ERR(objagg_obj); + } + if (should_create_root) { + if (world->root_count != orig_root_count + 1) { + pr_err("Key %u: Root was not created\n", key_id); + err = -EINVAL; + goto err_check_root_count; + } + } else { + if (world->root_count != orig_root_count) { + pr_err("Key %u: Root was incorrectly created\n", + key_id); + err = -EINVAL; + goto err_check_root_count; + } + } + root = objagg_obj_root_priv(objagg_obj); + if (root->key.id != key_id) { + pr_err("Key %u: Root has unexpected key id\n", key_id); + err = -EINVAL; + goto err_check_key_id; + } + if (should_create_root && + memcmp(world->next_root_buf, root->buf, sizeof(root->buf))) { + pr_err("Key %u: Buffer does not match the expected content\n", + key_id); + err = -EINVAL; + goto err_check_buf; + } + return 0; + +err_check_buf: +err_check_key_id: +err_check_root_count: + objagg_obj_put(objagg, objagg_obj); + return err; +} + +static int test_nodelta_obj_put(struct world *world, struct objagg *objagg, + unsigned int key_id, bool should_destroy_root) +{ + unsigned int orig_root_count = world->root_count; + + world_obj_put(world, objagg, key_id); + + if (should_destroy_root) { + if (world->root_count != orig_root_count - 1) { + pr_err("Key %u: Root was not destroyed\n", key_id); + return -EINVAL; + } + } else { + if (world->root_count != orig_root_count) { + pr_err("Key %u: Root was incorrectly destroyed\n", + key_id); + return -EINVAL; + } + } + return 0; +} + +static int check_stats_zero(struct objagg *objagg) +{ + const struct objagg_stats *stats; + int err = 0; + + stats = objagg_stats_get(objagg); + if (IS_ERR(stats)) + return PTR_ERR(stats); + + if (stats->stats_info_count != 0) { + pr_err("Stats: Object count is not zero while it should be\n"); + err = -EINVAL; + } + + objagg_stats_put(stats); + return err; +} + +static int check_stats_nodelta(struct objagg *objagg) +{ + const struct objagg_stats *stats; + int i; + int err; + + stats = objagg_stats_get(objagg); + if (IS_ERR(stats)) + return PTR_ERR(stats); + + if (stats->stats_info_count != NUM_KEYS) { + pr_err("Stats: Unexpected object count (%u expected, %u returned)\n", + NUM_KEYS, stats->stats_info_count); + err = -EINVAL; + goto stats_put; + } + + for (i = 0; i < stats->stats_info_count; i++) { + if (stats->stats_info[i].stats.user_count != 2) { + pr_err("Stats: incorrect user count\n"); + err = -EINVAL; + goto stats_put; + } + if (stats->stats_info[i].stats.delta_user_count != 2) { + pr_err("Stats: incorrect delta user count\n"); + err = -EINVAL; + goto stats_put; + } + } + err = 0; + +stats_put: + objagg_stats_put(stats); + return err; +} + +static bool delta_check_dummy(void *priv, const void *parent_obj, + const void *obj) +{ + return false; +} + +static void *delta_create_dummy(void *priv, void *parent_obj, void *obj) +{ + return ERR_PTR(-EOPNOTSUPP); +} + +static void delta_destroy_dummy(void *priv, void *delta_priv) +{ +} + +static const struct objagg_ops nodelta_ops = { + .obj_size = sizeof(struct tokey), + .delta_check = delta_check_dummy, + .delta_create = delta_create_dummy, + .delta_destroy = delta_destroy_dummy, + .root_create = root_create, + .root_destroy = root_destroy, +}; + +static int test_nodelta(void) +{ + struct world world = {}; + struct objagg *objagg; + int i; + int err; + + objagg = objagg_create(&nodelta_ops, NULL, &world); + if (IS_ERR(objagg)) + return PTR_ERR(objagg); + + err = check_stats_zero(objagg); + if (err) + goto err_stats_first_zero; + + /* First round of gets, the root objects should be created */ + for (i = 0; i < NUM_KEYS; i++) { + err = test_nodelta_obj_get(&world, objagg, i, true); + if (err) + goto err_obj_first_get; + } + + /* Do the second round of gets, all roots are already created, + * make sure that no new root is created + */ + for (i = 0; i < NUM_KEYS; i++) { + err = test_nodelta_obj_get(&world, objagg, i, false); + if (err) + goto err_obj_second_get; + } + + err = check_stats_nodelta(objagg); + if (err) + goto err_stats_nodelta; + + for (i = NUM_KEYS - 1; i >= 0; i--) { + err = test_nodelta_obj_put(&world, objagg, i, false); + if (err) + goto err_obj_first_put; + } + for (i = NUM_KEYS - 1; i >= 0; i--) { + err = test_nodelta_obj_put(&world, objagg, i, true); + if (err) + goto err_obj_second_put; + } + + err = check_stats_zero(objagg); + if (err) + goto err_stats_second_zero; + + objagg_destroy(objagg); + return 0; + +err_stats_nodelta: +err_obj_first_put: +err_obj_second_get: + for (i--; i >= 0; i--) + world_obj_put(&world, objagg, i); + + i = NUM_KEYS; +err_obj_first_get: +err_obj_second_put: + for (i--; i >= 0; i--) + world_obj_put(&world, objagg, i); +err_stats_first_zero: +err_stats_second_zero: + objagg_destroy(objagg); + return err; +} + +static const struct objagg_ops delta_ops = { + .obj_size = sizeof(struct tokey), + .delta_check = delta_check, + .delta_create = delta_create, + .delta_destroy = delta_destroy, + .root_create = root_create, + .root_destroy = root_destroy, +}; + +enum action { + ACTION_GET, + ACTION_PUT, +}; + +enum expect_delta { + EXPECT_DELTA_SAME, + EXPECT_DELTA_INC, + EXPECT_DELTA_DEC, +}; + +enum expect_root { + EXPECT_ROOT_SAME, + EXPECT_ROOT_INC, + EXPECT_ROOT_DEC, +}; + +struct expect_stats_info { + struct objagg_obj_stats stats; + bool is_root; + unsigned int key_id; +}; + +struct expect_stats { + unsigned int info_count; + struct expect_stats_info info[NUM_KEYS]; +}; + +struct action_item { + unsigned int key_id; + enum action action; + enum expect_delta expect_delta; + enum expect_root expect_root; + struct expect_stats expect_stats; +}; + +#define EXPECT_STATS(count, ...) \ +{ \ + .info_count = count, \ + .info = { __VA_ARGS__ } \ +} + +#define ROOT(key_id, user_count, delta_user_count) \ + {{user_count, delta_user_count}, true, key_id} + +#define DELTA(key_id, user_count) \ + {{user_count, user_count}, false, key_id} + +static const struct action_item action_items[] = { + { + 1, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_INC, + EXPECT_STATS(1, ROOT(1, 1, 1)), + }, /* r: 1 d: */ + { + 7, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_INC, + EXPECT_STATS(2, ROOT(1, 1, 1), ROOT(7, 1, 1)), + }, /* r: 1, 7 d: */ + { + 3, ACTION_GET, EXPECT_DELTA_INC, EXPECT_ROOT_SAME, + EXPECT_STATS(3, ROOT(1, 1, 2), ROOT(7, 1, 1), + DELTA(3, 1)), + }, /* r: 1, 7 d: 3^1 */ + { + 5, ACTION_GET, EXPECT_DELTA_INC, EXPECT_ROOT_SAME, + EXPECT_STATS(4, ROOT(1, 1, 3), ROOT(7, 1, 1), + DELTA(3, 1), DELTA(5, 1)), + }, /* r: 1, 7 d: 3^1, 5^1 */ + { + 3, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, + EXPECT_STATS(4, ROOT(1, 1, 4), ROOT(7, 1, 1), + DELTA(3, 2), DELTA(5, 1)), + }, /* r: 1, 7 d: 3^1, 3^1, 5^1 */ + { + 1, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, + EXPECT_STATS(4, ROOT(1, 2, 5), ROOT(7, 1, 1), + DELTA(3, 2), DELTA(5, 1)), + }, /* r: 1, 1, 7 d: 3^1, 3^1, 5^1 */ + { + 30, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_INC, + EXPECT_STATS(5, ROOT(1, 2, 5), ROOT(7, 1, 1), ROOT(30, 1, 1), + DELTA(3, 2), DELTA(5, 1)), + }, /* r: 1, 1, 7, 30 d: 3^1, 3^1, 5^1 */ + { + 8, ACTION_GET, EXPECT_DELTA_INC, EXPECT_ROOT_SAME, + EXPECT_STATS(6, ROOT(1, 2, 5), ROOT(7, 1, 2), ROOT(30, 1, 1), + DELTA(3, 2), DELTA(5, 1), DELTA(8, 1)), + }, /* r: 1, 1, 7, 30 d: 3^1, 3^1, 5^1, 8^7 */ + { + 8, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, + EXPECT_STATS(6, ROOT(1, 2, 5), ROOT(7, 1, 3), ROOT(30, 1, 1), + DELTA(3, 2), DELTA(8, 2), DELTA(5, 1)), + }, /* r: 1, 1, 7, 30 d: 3^1, 3^1, 5^1, 8^7, 8^7 */ + { + 3, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, + EXPECT_STATS(6, ROOT(1, 2, 4), ROOT(7, 1, 3), ROOT(30, 1, 1), + DELTA(8, 2), DELTA(3, 1), DELTA(5, 1)), + }, /* r: 1, 1, 7, 30 d: 3^1, 5^1, 8^7, 8^7 */ + { + 3, ACTION_PUT, EXPECT_DELTA_DEC, EXPECT_ROOT_SAME, + EXPECT_STATS(5, ROOT(1, 2, 3), ROOT(7, 1, 3), ROOT(30, 1, 1), + DELTA(8, 2), DELTA(5, 1)), + }, /* r: 1, 1, 7, 30 d: 5^1, 8^7, 8^7 */ + { + 1, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, + EXPECT_STATS(5, ROOT(7, 1, 3), ROOT(1, 1, 2), ROOT(30, 1, 1), + DELTA(8, 2), DELTA(5, 1)), + }, /* r: 1, 7, 30 d: 5^1, 8^7, 8^7 */ + { + 1, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, + EXPECT_STATS(5, ROOT(7, 1, 3), ROOT(30, 1, 1), ROOT(1, 0, 1), + DELTA(8, 2), DELTA(5, 1)), + }, /* r: 7, 30 d: 5^1, 8^7, 8^7 */ + { + 5, ACTION_PUT, EXPECT_DELTA_DEC, EXPECT_ROOT_DEC, + EXPECT_STATS(3, ROOT(7, 1, 3), ROOT(30, 1, 1), + DELTA(8, 2)), + }, /* r: 7, 30 d: 8^7, 8^7 */ + { + 5, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_INC, + EXPECT_STATS(4, ROOT(7, 1, 3), ROOT(30, 1, 1), ROOT(5, 1, 1), + DELTA(8, 2)), + }, /* r: 7, 30, 5 d: 8^7, 8^7 */ + { + 6, ACTION_GET, EXPECT_DELTA_INC, EXPECT_ROOT_SAME, + EXPECT_STATS(5, ROOT(7, 1, 3), ROOT(5, 1, 2), ROOT(30, 1, 1), + DELTA(8, 2), DELTA(6, 1)), + }, /* r: 7, 30, 5 d: 8^7, 8^7, 6^5 */ + { + 8, ACTION_GET, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, + EXPECT_STATS(5, ROOT(7, 1, 4), ROOT(5, 1, 2), ROOT(30, 1, 1), + DELTA(8, 3), DELTA(6, 1)), + }, /* r: 7, 30, 5 d: 8^7, 8^7, 8^7, 6^5 */ + { + 8, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, + EXPECT_STATS(5, ROOT(7, 1, 3), ROOT(5, 1, 2), ROOT(30, 1, 1), + DELTA(8, 2), DELTA(6, 1)), + }, /* r: 7, 30, 5 d: 8^7, 8^7, 6^5 */ + { + 8, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, + EXPECT_STATS(5, ROOT(7, 1, 2), ROOT(5, 1, 2), ROOT(30, 1, 1), + DELTA(8, 1), DELTA(6, 1)), + }, /* r: 7, 30, 5 d: 8^7, 6^5 */ + { + 8, ACTION_PUT, EXPECT_DELTA_DEC, EXPECT_ROOT_SAME, + EXPECT_STATS(4, ROOT(5, 1, 2), ROOT(7, 1, 1), ROOT(30, 1, 1), + DELTA(6, 1)), + }, /* r: 7, 30, 5 d: 6^5 */ + { + 8, ACTION_GET, EXPECT_DELTA_INC, EXPECT_ROOT_SAME, + EXPECT_STATS(5, ROOT(5, 1, 3), ROOT(7, 1, 1), ROOT(30, 1, 1), + DELTA(6, 1), DELTA(8, 1)), + }, /* r: 7, 30, 5 d: 6^5, 8^5 */ + { + 7, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_DEC, + EXPECT_STATS(4, ROOT(5, 1, 3), ROOT(30, 1, 1), + DELTA(6, 1), DELTA(8, 1)), + }, /* r: 30, 5 d: 6^5, 8^5 */ + { + 30, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_DEC, + EXPECT_STATS(3, ROOT(5, 1, 3), + DELTA(6, 1), DELTA(8, 1)), + }, /* r: 5 d: 6^5, 8^5 */ + { + 5, ACTION_PUT, EXPECT_DELTA_SAME, EXPECT_ROOT_SAME, + EXPECT_STATS(3, ROOT(5, 0, 2), + DELTA(6, 1), DELTA(8, 1)), + }, /* r: d: 6^5, 8^5 */ + { + 6, ACTION_PUT, EXPECT_DELTA_DEC, EXPECT_ROOT_SAME, + EXPECT_STATS(2, ROOT(5, 0, 1), + DELTA(8, 1)), + }, /* r: d: 6^5 */ + { + 8, ACTION_PUT, EXPECT_DELTA_DEC, EXPECT_ROOT_DEC, + EXPECT_STATS(0, ), + }, /* r: d: */ +}; + +static int check_expect(struct world *world, + const struct action_item *action_item, + unsigned int orig_delta_count, + unsigned int orig_root_count) +{ + unsigned int key_id = action_item->key_id; + + switch (action_item->expect_delta) { + case EXPECT_DELTA_SAME: + if (orig_delta_count != world->delta_count) { + pr_err("Key %u: Delta count changed while expected to remain the same.\n", + key_id); + return -EINVAL; + } + break; + case EXPECT_DELTA_INC: + if (WARN_ON(action_item->action == ACTION_PUT)) + return -EINVAL; + if (orig_delta_count + 1 != world->delta_count) { + pr_err("Key %u: Delta count was not incremented.\n", + key_id); + return -EINVAL; + } + break; + case EXPECT_DELTA_DEC: + if (WARN_ON(action_item->action == ACTION_GET)) + return -EINVAL; + if (orig_delta_count - 1 != world->delta_count) { + pr_err("Key %u: Delta count was not decremented.\n", + key_id); + return -EINVAL; + } + break; + } + + switch (action_item->expect_root) { + case EXPECT_ROOT_SAME: + if (orig_root_count != world->root_count) { + pr_err("Key %u: Root count changed while expected to remain the same.\n", + key_id); + return -EINVAL; + } + break; + case EXPECT_ROOT_INC: + if (WARN_ON(action_item->action == ACTION_PUT)) + return -EINVAL; + if (orig_root_count + 1 != world->root_count) { + pr_err("Key %u: Root count was not incremented.\n", + key_id); + return -EINVAL; + } + break; + case EXPECT_ROOT_DEC: + if (WARN_ON(action_item->action == ACTION_GET)) + return -EINVAL; + if (orig_root_count - 1 != world->root_count) { + pr_err("Key %u: Root count was not decremented.\n", + key_id); + return -EINVAL; + } + } + + return 0; +} + +static unsigned int obj_to_key_id(struct objagg_obj *objagg_obj) +{ + const struct tokey *root_key; + const struct delta *delta; + unsigned int key_id; + + root_key = objagg_obj_root_priv(objagg_obj); + key_id = root_key->id; + delta = objagg_obj_delta_priv(objagg_obj); + if (delta) + key_id += delta->key_id_diff; + return key_id; +} + +static int +check_expect_stats_nums(const struct objagg_obj_stats_info *stats_info, + const struct expect_stats_info *expect_stats_info, + const char **errmsg) +{ + if (stats_info->is_root != expect_stats_info->is_root) { + if (errmsg) + *errmsg = "Incorrect root/delta indication"; + return -EINVAL; + } + if (stats_info->stats.user_count != + expect_stats_info->stats.user_count) { + if (errmsg) + *errmsg = "Incorrect user count"; + return -EINVAL; + } + if (stats_info->stats.delta_user_count != + expect_stats_info->stats.delta_user_count) { + if (errmsg) + *errmsg = "Incorrect delta user count"; + return -EINVAL; + } + return 0; +} + +static int +check_expect_stats_key_id(const struct objagg_obj_stats_info *stats_info, + const struct expect_stats_info *expect_stats_info, + const char **errmsg) +{ + if (obj_to_key_id(stats_info->objagg_obj) != + expect_stats_info->key_id) { + if (errmsg) + *errmsg = "incorrect key id"; + return -EINVAL; + } + return 0; +} + +static int check_expect_stats_neigh(const struct objagg_stats *stats, + const struct expect_stats *expect_stats, + int pos) +{ + int i; + int err; + + for (i = pos - 1; i >= 0; i--) { + err = check_expect_stats_nums(&stats->stats_info[i], + &expect_stats->info[pos], NULL); + if (err) + break; + err = check_expect_stats_key_id(&stats->stats_info[i], + &expect_stats->info[pos], NULL); + if (!err) + return 0; + } + for (i = pos + 1; i < stats->stats_info_count; i++) { + err = check_expect_stats_nums(&stats->stats_info[i], + &expect_stats->info[pos], NULL); + if (err) + break; + err = check_expect_stats_key_id(&stats->stats_info[i], + &expect_stats->info[pos], NULL); + if (!err) + return 0; + } + return -EINVAL; +} + +static int __check_expect_stats(const struct objagg_stats *stats, + const struct expect_stats *expect_stats, + const char **errmsg) +{ + int i; + int err; + + if (stats->stats_info_count != expect_stats->info_count) { + *errmsg = "Unexpected object count"; + return -EINVAL; + } + + for (i = 0; i < stats->stats_info_count; i++) { + err = check_expect_stats_nums(&stats->stats_info[i], + &expect_stats->info[i], errmsg); + if (err) + return err; + err = check_expect_stats_key_id(&stats->stats_info[i], + &expect_stats->info[i], errmsg); + if (err) { + /* It is possible that one of the neighbor stats with + * same numbers have the correct key id, so check it + */ + err = check_expect_stats_neigh(stats, expect_stats, i); + if (err) + return err; + } + } + return 0; +} + +static int check_expect_stats(struct objagg *objagg, + const struct expect_stats *expect_stats, + const char **errmsg) +{ + const struct objagg_stats *stats; + int err; + + stats = objagg_stats_get(objagg); + if (IS_ERR(stats)) { + *errmsg = "objagg_stats_get() failed."; + return PTR_ERR(stats); + } + err = __check_expect_stats(stats, expect_stats, errmsg); + objagg_stats_put(stats); + return err; +} + +static int test_delta_action_item(struct world *world, + struct objagg *objagg, + const struct action_item *action_item, + bool inverse) +{ + unsigned int orig_delta_count = world->delta_count; + unsigned int orig_root_count = world->root_count; + unsigned int key_id = action_item->key_id; + enum action action = action_item->action; + struct objagg_obj *objagg_obj; + const char *errmsg; + int err; + + if (inverse) + action = action == ACTION_GET ? ACTION_PUT : ACTION_GET; + + switch (action) { + case ACTION_GET: + objagg_obj = world_obj_get(world, objagg, key_id); + if (IS_ERR(objagg_obj)) + return PTR_ERR(objagg_obj); + break; + case ACTION_PUT: + world_obj_put(world, objagg, key_id); + break; + } + + if (inverse) + return 0; + err = check_expect(world, action_item, + orig_delta_count, orig_root_count); + if (err) + goto errout; + + err = check_expect_stats(objagg, &action_item->expect_stats, &errmsg); + if (err) { + pr_err("Key %u: Stats: %s\n", action_item->key_id, errmsg); + goto errout; + } + + return 0; + +errout: + /* This can only happen when action is not inversed. + * So in case of an error, cleanup by doing inverse action. + */ + test_delta_action_item(world, objagg, action_item, true); + return err; +} + +static int test_delta(void) +{ + struct world world = {}; + struct objagg *objagg; + int i; + int err; + + objagg = objagg_create(&delta_ops, NULL, &world); + if (IS_ERR(objagg)) + return PTR_ERR(objagg); + + for (i = 0; i < ARRAY_SIZE(action_items); i++) { + err = test_delta_action_item(&world, objagg, + &action_items[i], false); + if (err) + goto err_do_action_item; + } + + objagg_destroy(objagg); + return 0; + +err_do_action_item: + for (i--; i >= 0; i--) + test_delta_action_item(&world, objagg, &action_items[i], true); + + objagg_destroy(objagg); + return err; +} + +struct hints_case { + const unsigned int *key_ids; + size_t key_ids_count; + struct expect_stats expect_stats; + struct expect_stats expect_stats_hints; +}; + +static const unsigned int hints_case_key_ids[] = { + 1, 7, 3, 5, 3, 1, 30, 8, 8, 5, 6, 8, +}; + +static const struct hints_case hints_case = { + .key_ids = hints_case_key_ids, + .key_ids_count = ARRAY_SIZE(hints_case_key_ids), + .expect_stats = + EXPECT_STATS(7, ROOT(1, 2, 7), ROOT(7, 1, 4), ROOT(30, 1, 1), + DELTA(8, 3), DELTA(3, 2), + DELTA(5, 2), DELTA(6, 1)), + .expect_stats_hints = + EXPECT_STATS(7, ROOT(3, 2, 9), ROOT(1, 2, 2), ROOT(30, 1, 1), + DELTA(8, 3), DELTA(5, 2), + DELTA(6, 1), DELTA(7, 1)), +}; + +static void __pr_debug_stats(const struct objagg_stats *stats) +{ + int i; + + for (i = 0; i < stats->stats_info_count; i++) + pr_debug("Stat index %d key %u: u %d, d %d, %s\n", i, + obj_to_key_id(stats->stats_info[i].objagg_obj), + stats->stats_info[i].stats.user_count, + stats->stats_info[i].stats.delta_user_count, + stats->stats_info[i].is_root ? "root" : "noroot"); +} + +static void pr_debug_stats(struct objagg *objagg) +{ + const struct objagg_stats *stats; + + stats = objagg_stats_get(objagg); + if (IS_ERR(stats)) + return; + __pr_debug_stats(stats); + objagg_stats_put(stats); +} + +static void pr_debug_hints_stats(struct objagg_hints *objagg_hints) +{ + const struct objagg_stats *stats; + + stats = objagg_hints_stats_get(objagg_hints); + if (IS_ERR(stats)) + return; + __pr_debug_stats(stats); + objagg_stats_put(stats); +} + +static int check_expect_hints_stats(struct objagg_hints *objagg_hints, + const struct expect_stats *expect_stats, + const char **errmsg) +{ + const struct objagg_stats *stats; + int err; + + stats = objagg_hints_stats_get(objagg_hints); + if (IS_ERR(stats)) + return PTR_ERR(stats); + err = __check_expect_stats(stats, expect_stats, errmsg); + objagg_stats_put(stats); + return err; +} + +static int test_hints_case(const struct hints_case *hints_case) +{ + struct objagg_obj *objagg_obj; + struct objagg_hints *hints; + struct world world2 = {}; + struct world world = {}; + struct objagg *objagg2; + struct objagg *objagg; + const char *errmsg; + int i; + int err; + + objagg = objagg_create(&delta_ops, NULL, &world); + if (IS_ERR(objagg)) + return PTR_ERR(objagg); + + for (i = 0; i < hints_case->key_ids_count; i++) { + objagg_obj = world_obj_get(&world, objagg, + hints_case->key_ids[i]); + if (IS_ERR(objagg_obj)) { + err = PTR_ERR(objagg_obj); + goto err_world_obj_get; + } + } + + pr_debug_stats(objagg); + err = check_expect_stats(objagg, &hints_case->expect_stats, &errmsg); + if (err) { + pr_err("Stats: %s\n", errmsg); + goto err_check_expect_stats; + } + + hints = objagg_hints_get(objagg, OBJAGG_OPT_ALGO_SIMPLE_GREEDY); + if (IS_ERR(hints)) { + err = PTR_ERR(hints); + goto err_hints_get; + } + + pr_debug_hints_stats(hints); + err = check_expect_hints_stats(hints, &hints_case->expect_stats_hints, + &errmsg); + if (err) { + pr_err("Hints stats: %s\n", errmsg); + goto err_check_expect_hints_stats; + } + + objagg2 = objagg_create(&delta_ops, hints, &world2); + if (IS_ERR(objagg2)) + return PTR_ERR(objagg2); + + for (i = 0; i < hints_case->key_ids_count; i++) { + objagg_obj = world_obj_get(&world2, objagg2, + hints_case->key_ids[i]); + if (IS_ERR(objagg_obj)) { + err = PTR_ERR(objagg_obj); + goto err_world2_obj_get; + } + } + + pr_debug_stats(objagg2); + err = check_expect_stats(objagg2, &hints_case->expect_stats_hints, + &errmsg); + if (err) { + pr_err("Stats2: %s\n", errmsg); + goto err_check_expect_stats2; + } + + err = 0; + +err_check_expect_stats2: +err_world2_obj_get: + for (i--; i >= 0; i--) + world_obj_put(&world2, objagg, hints_case->key_ids[i]); + i = hints_case->key_ids_count; + objagg_destroy(objagg2); +err_check_expect_hints_stats: + objagg_hints_put(hints); +err_hints_get: +err_check_expect_stats: +err_world_obj_get: + for (i--; i >= 0; i--) + world_obj_put(&world, objagg, hints_case->key_ids[i]); + + objagg_destroy(objagg); + return err; +} +static int test_hints(void) +{ + return test_hints_case(&hints_case); +} + +static int __init test_objagg_init(void) +{ + int err; + + err = test_nodelta(); + if (err) + return err; + err = test_delta(); + if (err) + return err; + return test_hints(); +} + +static void __exit test_objagg_exit(void) +{ +} + +module_init(test_objagg_init); +module_exit(test_objagg_exit); +MODULE_LICENSE("Dual BSD/GPL"); +MODULE_AUTHOR("Jiri Pirko <jiri@mellanox.com>"); +MODULE_DESCRIPTION("Test module for objagg"); |