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Date: Tue, 27 Jul 2021 19:58:48 -0300
From: José Aquiles Guedes de Rezende
<jjoseaquiless@...il.com>
To: Jiri Pirko <jiri@...dia.com>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
brendanhiggins@...gle.com, dlatypov@...gle.com,
davidgow@...gle.com, linux-kselftest@...r.kernel.org,
~lkcamp/patches@...ts.sr.ht,
José Aquiles Guedes de Rezende
<jjoseaquiless@...il.com>,
Matheus Henrique de Souza Silva
<matheushenriquedesouzasilva@...tonmail.com>
Subject: [PATCH] lib: use of kunit in test_parman.c
Convert the parman test module to use the KUnit test framework.
This makes thetest clearer by leveraging KUnit's assertion macros
and test case definitions,as well as helps standardize on a testing framework.
Co-developed-by: Matheus Henrique de Souza Silva <matheushenriquedesouzasilva@...tonmail.com>
Signed-off-by: Matheus Henrique de Souza Silva <matheushenriquedesouzasilva@...tonmail.com>
Signed-off-by: José Aquiles Guedes de Rezende <jjoseaquiless@...il.com>
---
lib/test_parman.c | 145 +++++++++++++++++++---------------------------
1 file changed, 60 insertions(+), 85 deletions(-)
diff --git a/lib/test_parman.c b/lib/test_parman.c
index 35e32243693c..bd5010f0a412 100644
--- a/lib/test_parman.c
+++ b/lib/test_parman.c
@@ -41,6 +41,8 @@
#include <linux/err.h>
#include <linux/random.h>
#include <linux/parman.h>
+#include <linux/sched.h>
+#include <kunit/test.h>
#define TEST_PARMAN_PRIO_SHIFT 7 /* defines number of prios for testing */
#define TEST_PARMAN_PRIO_COUNT BIT(TEST_PARMAN_PRIO_SHIFT)
@@ -91,12 +93,14 @@ struct test_parman {
static int test_parman_resize(void *priv, unsigned long new_count)
{
+ struct kunit *test = current->kunit_test;
struct test_parman *test_parman = priv;
struct test_parman_item **prio_array;
unsigned long old_count;
prio_array = krealloc(test_parman->prio_array,
ITEM_PTRS_SIZE(new_count), GFP_KERNEL);
+ KUNIT_EXPECT_NOT_ERR_OR_NULL(test, prio_array);
if (new_count == 0)
return 0;
if (!prio_array)
@@ -214,42 +218,39 @@ static void test_parman_items_fini(struct test_parman *test_parman)
}
}
-static struct test_parman *test_parman_create(const struct parman_ops *ops)
+static int test_parman_create(struct kunit *test)
{
struct test_parman *test_parman;
int err;
- test_parman = kzalloc(sizeof(*test_parman), GFP_KERNEL);
- if (!test_parman)
- return ERR_PTR(-ENOMEM);
+ test_parman = kunit_kzalloc(test, sizeof(*test_parman), GFP_KERNEL);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, test_parman);
+
err = test_parman_resize(test_parman, TEST_PARMAN_BASE_COUNT);
- if (err)
- goto err_resize;
- test_parman->parman = parman_create(ops, test_parman);
- if (!test_parman->parman) {
- err = -ENOMEM;
- goto err_parman_create;
- }
+ KUNIT_ASSERT_EQ(test, err, 0);
+
+ test_parman->parman = parman_create(&test_parman_lsort_ops, test_parman);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, test_parman->parman);
+
test_parman_rnd_init(test_parman);
test_parman_prios_init(test_parman);
test_parman_items_init(test_parman);
test_parman->run_budget = TEST_PARMAN_RUN_BUDGET;
- return test_parman;
-
-err_parman_create:
- test_parman_resize(test_parman, 0);
-err_resize:
- kfree(test_parman);
- return ERR_PTR(err);
+ test->priv = test_parman;
+ return 0;
}
-static void test_parman_destroy(struct test_parman *test_parman)
+static void test_parman_destroy(struct kunit *test)
{
+ struct test_parman *test_parman = test->priv;
+
+ if (!test_parman)
+ return;
test_parman_items_fini(test_parman);
test_parman_prios_fini(test_parman);
parman_destroy(test_parman->parman);
test_parman_resize(test_parman, 0);
- kfree(test_parman);
+ kunit_kfree(test, test_parman);
}
static bool test_parman_run_check_budgets(struct test_parman *test_parman)
@@ -265,8 +266,9 @@ static bool test_parman_run_check_budgets(struct test_parman *test_parman)
return true;
}
-static int test_parman_run(struct test_parman *test_parman)
+static void test_parman_run(struct kunit *test)
{
+ struct test_parman *test_parman = test->priv;
unsigned int i = test_parman_rnd_get(test_parman);
int err;
@@ -281,8 +283,8 @@ static int test_parman_run(struct test_parman *test_parman)
err = parman_item_add(test_parman->parman,
&item->prio->parman_prio,
&item->parman_item);
- if (err)
- return err;
+ KUNIT_ASSERT_EQ(test, err, 0);
+
test_parman->prio_array[item->parman_item.index] = item;
test_parman->used_items++;
} else {
@@ -294,22 +296,19 @@ static int test_parman_run(struct test_parman *test_parman)
}
item->used = !item->used;
}
- return 0;
}
-static int test_parman_check_array(struct test_parman *test_parman,
- bool gaps_allowed)
+static void test_parman_check_array(struct kunit *test, bool gaps_allowed)
{
unsigned int last_unused_items = 0;
unsigned long last_priority = 0;
unsigned int used_items = 0;
int i;
+ struct test_parman *test_parman = test->priv;
- if (test_parman->prio_array_limit < TEST_PARMAN_BASE_COUNT) {
- pr_err("Array limit is lower than the base count (%lu < %lu)\n",
- test_parman->prio_array_limit, TEST_PARMAN_BASE_COUNT);
- return -EINVAL;
- }
+ KUNIT_ASSERT_GE_MSG(test, test_parman->prio_array_limit, TEST_PARMAN_BASE_COUNT,
+ "Array limit is lower than the base count (%lu < %lu)\n",
+ test_parman->prio_array_limit, TEST_PARMAN_BASE_COUNT);
for (i = 0; i < test_parman->prio_array_limit; i++) {
struct test_parman_item *item = test_parman->prio_array[i];
@@ -318,77 +317,53 @@ static int test_parman_check_array(struct test_parman *test_parman,
last_unused_items++;
continue;
}
- if (last_unused_items && !gaps_allowed) {
- pr_err("Gap found in array even though they are forbidden\n");
- return -EINVAL;
- }
+
+ KUNIT_ASSERT_FALSE_MSG(test, last_unused_items && !gaps_allowed,
+ "Gap found in array even though they are forbidden\n");
last_unused_items = 0;
used_items++;
- if (item->prio->priority < last_priority) {
- pr_err("Item belongs under higher priority then the last one (current: %lu, previous: %lu)\n",
- item->prio->priority, last_priority);
- return -EINVAL;
- }
- last_priority = item->prio->priority;
+ KUNIT_ASSERT_GE_MSG(test, item->prio->priority, last_priority,
+ "Item belongs under higher priority then the last one (current: %lu, previous: %lu)\n",
+ item->prio->priority, last_priority);
- if (item->parman_item.index != i) {
- pr_err("Item has different index in compare to where it actually is (%lu != %d)\n",
- item->parman_item.index, i);
- return -EINVAL;
- }
- }
+ last_priority = item->prio->priority;
- if (used_items != test_parman->used_items) {
- pr_err("Number of used items in array does not match (%u != %u)\n",
- used_items, test_parman->used_items);
- return -EINVAL;
- }
+ KUNIT_ASSERT_EQ_MSG(test, item->parman_item.index, (unsigned long)i,
+ "Item has different index in compare to where it actually is (%lu != %d)\n",
+ item->parman_item.index, i);
- if (last_unused_items >= TEST_PARMAN_RESIZE_STEP_COUNT) {
- pr_err("Number of unused item at the end of array is bigger than resize step (%u >= %lu)\n",
- last_unused_items, TEST_PARMAN_RESIZE_STEP_COUNT);
- return -EINVAL;
}
- pr_info("Priority array check successful\n");
+ KUNIT_ASSERT_EQ_MSG(test, used_items, test_parman->used_items,
+ "Number of used items in array does not match (%u != %u)\n",
+ used_items, test_parman->used_items);
- return 0;
+ KUNIT_ASSERT_LT_MSG(test, (unsigned long)last_unused_items, TEST_PARMAN_RESIZE_STEP_COUNT,
+ "Number of unused item at the end of array is bigger than resize step (%u >= %lu)\n",
+ last_unused_items, TEST_PARMAN_RESIZE_STEP_COUNT);
}
-static int test_parman_lsort(void)
+static void test_parman_lsort(struct kunit *test)
{
- struct test_parman *test_parman;
- int err;
-
- test_parman = test_parman_create(&test_parman_lsort_ops);
- if (IS_ERR(test_parman))
- return PTR_ERR(test_parman);
-
- err = test_parman_run(test_parman);
- if (err)
- goto out;
-
- err = test_parman_check_array(test_parman, false);
- if (err)
- goto out;
-out:
- test_parman_destroy(test_parman);
- return err;
+ test_parman_run(test);
+ test_parman_check_array(test, false);
}
-static int __init test_parman_init(void)
-{
- return test_parman_lsort();
-}
+static struct kunit_case parman_test_case[] = {
+ KUNIT_CASE(test_parman_lsort),
+ {}
+};
-static void __exit test_parman_exit(void)
-{
-}
+static struct kunit_suite parman_test_suite = {
+ .name = "parman",
+ .init = test_parman_create,
+ .exit = test_parman_destroy,
+ .test_cases = parman_test_case,
+};
-module_init(test_parman_init);
-module_exit(test_parman_exit);
+kunit_test_suite(parman_test_suite);
MODULE_LICENSE("Dual BSD/GPL");
MODULE_AUTHOR("Jiri Pirko <jiri@...lanox.com>");
--
2.32.0
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