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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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#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: Got 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_obj(*delta); 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_obj(*root); 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 intcheck_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 intcheck_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)) { *errmsg = "objagg_hints_stats_get() failed."; return PTR_ERR(stats); } err = __check_expect_stats(stats, expect_stats, errmsg); objagg_stats_put(stats); return err;}
static int test_hints_case2(const struct hints_case *hints_case, struct objagg_hints *hints, struct objagg *objagg){ struct objagg_obj *objagg_obj; struct world world2 = {}; struct objagg *objagg2; const char *errmsg; int i; int err;
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); return err; }
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);
return err;}
static int test_hints_case(const struct hints_case *hints_case){ struct objagg_obj *objagg_obj; struct objagg_hints *hints; struct world world = {}; 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; }
err = test_hints_case2(hints_case, hints, objagg);
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");