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- // SPDX-License-Identifier: GPL-2.0
- /*
- * Copyright 2019 NXP
- */
- #include <kunit/test.h>
- #include <linux/pm_qos.h>
- /* Basic test for aggregating two "min" requests */
- static void freq_qos_test_min(struct kunit *test)
- {
- struct freq_constraints qos;
- struct freq_qos_request req1, req2;
- int ret;
- freq_constraints_init(&qos);
- memset(&req1, 0, sizeof(req1));
- memset(&req2, 0, sizeof(req2));
- ret = freq_qos_add_request(&qos, &req1, FREQ_QOS_MIN, 1000);
- KUNIT_EXPECT_EQ(test, ret, 1);
- ret = freq_qos_add_request(&qos, &req2, FREQ_QOS_MIN, 2000);
- KUNIT_EXPECT_EQ(test, ret, 1);
- KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN), 2000);
- ret = freq_qos_remove_request(&req2);
- KUNIT_EXPECT_EQ(test, ret, 1);
- KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN), 1000);
- ret = freq_qos_remove_request(&req1);
- KUNIT_EXPECT_EQ(test, ret, 1);
- KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN),
- FREQ_QOS_MIN_DEFAULT_VALUE);
- }
- /* Test that requests for MAX_DEFAULT_VALUE have no effect */
- static void freq_qos_test_maxdef(struct kunit *test)
- {
- struct freq_constraints qos;
- struct freq_qos_request req1, req2;
- int ret;
- freq_constraints_init(&qos);
- memset(&req1, 0, sizeof(req1));
- memset(&req2, 0, sizeof(req2));
- KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MAX),
- FREQ_QOS_MAX_DEFAULT_VALUE);
- ret = freq_qos_add_request(&qos, &req1, FREQ_QOS_MAX,
- FREQ_QOS_MAX_DEFAULT_VALUE);
- KUNIT_EXPECT_EQ(test, ret, 0);
- ret = freq_qos_add_request(&qos, &req2, FREQ_QOS_MAX,
- FREQ_QOS_MAX_DEFAULT_VALUE);
- KUNIT_EXPECT_EQ(test, ret, 0);
- /* Add max 1000 */
- ret = freq_qos_update_request(&req1, 1000);
- KUNIT_EXPECT_EQ(test, ret, 1);
- KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MAX), 1000);
- /* Add max 2000, no impact */
- ret = freq_qos_update_request(&req2, 2000);
- KUNIT_EXPECT_EQ(test, ret, 0);
- KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MAX), 1000);
- /* Remove max 1000, new max 2000 */
- ret = freq_qos_remove_request(&req1);
- KUNIT_EXPECT_EQ(test, ret, 1);
- KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MAX), 2000);
- }
- /*
- * Test that a freq_qos_request can be added again after removal
- *
- * This issue was solved by commit 05ff1ba412fd ("PM: QoS: Invalidate frequency
- * QoS requests after removal")
- */
- static void freq_qos_test_readd(struct kunit *test)
- {
- struct freq_constraints qos;
- struct freq_qos_request req;
- int ret;
- freq_constraints_init(&qos);
- memset(&req, 0, sizeof(req));
- KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN),
- FREQ_QOS_MIN_DEFAULT_VALUE);
- /* Add */
- ret = freq_qos_add_request(&qos, &req, FREQ_QOS_MIN, 1000);
- KUNIT_EXPECT_EQ(test, ret, 1);
- KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN), 1000);
- /* Remove */
- ret = freq_qos_remove_request(&req);
- KUNIT_EXPECT_EQ(test, ret, 1);
- KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN),
- FREQ_QOS_MIN_DEFAULT_VALUE);
- /* Add again */
- ret = freq_qos_add_request(&qos, &req, FREQ_QOS_MIN, 2000);
- KUNIT_EXPECT_EQ(test, ret, 1);
- KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN), 2000);
- }
- static struct kunit_case pm_qos_test_cases[] = {
- KUNIT_CASE(freq_qos_test_min),
- KUNIT_CASE(freq_qos_test_maxdef),
- KUNIT_CASE(freq_qos_test_readd),
- {},
- };
- static struct kunit_suite pm_qos_test_module = {
- .name = "qos-kunit-test",
- .test_cases = pm_qos_test_cases,
- };
- kunit_test_suites(&pm_qos_test_module);
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