forked from mirrors/linux
c475c77d5b
As tests are added to kunit, it will become less feasible to execute
all built tests together. By supporting modular tests we provide
a simple way to do selective execution on a running system; specifying
CONFIG_KUNIT=y
CONFIG_KUNIT_EXAMPLE_TEST=m
...means we can simply "insmod example-test.ko" to run the tests.
To achieve this we need to do the following:
o export the required symbols in kunit
o string-stream tests utilize non-exported symbols so for now we skip
building them when CONFIG_KUNIT_TEST=m.
o drivers/base/power/qos-test.c contains a few unexported interface
references, namely freq_qos_read_value() and freq_constraints_init().
Both of these could be potentially defined as static inline functions
in include/linux/pm_qos.h, but for now we simply avoid supporting
module build for that test suite.
o support a new way of declaring test suites. Because a module cannot
do multiple late_initcall()s, we provide a kunit_test_suites() macro
to declare multiple suites within the same module at once.
o some test module names would have been too general ("test-test"
and "example-test" for kunit tests, "inode-test" for ext4 tests);
rename these as appropriate ("kunit-test", "kunit-example-test"
and "ext4-inode-test" respectively).
Also define kunit_test_suite() via kunit_test_suites()
as callers in other trees may need the old definition.
Co-developed-by: Knut Omang <knut.omang@oracle.com>
Signed-off-by: Knut Omang <knut.omang@oracle.com>
Signed-off-by: Alan Maguire <alan.maguire@oracle.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Acked-by: Theodore Ts'o <tytso@mit.edu> # for ext4 bits
Acked-by: David Gow <davidgow@google.com> # For list-test
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
117 lines
3.4 KiB
C
117 lines
3.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright 2019 NXP
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*/
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#include <kunit/test.h>
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#include <linux/pm_qos.h>
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/* Basic test for aggregating two "min" requests */
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static void freq_qos_test_min(struct kunit *test)
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{
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struct freq_constraints qos;
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struct freq_qos_request req1, req2;
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int ret;
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freq_constraints_init(&qos);
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memset(&req1, 0, sizeof(req1));
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memset(&req2, 0, sizeof(req2));
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ret = freq_qos_add_request(&qos, &req1, FREQ_QOS_MIN, 1000);
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KUNIT_EXPECT_EQ(test, ret, 1);
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ret = freq_qos_add_request(&qos, &req2, FREQ_QOS_MIN, 2000);
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KUNIT_EXPECT_EQ(test, ret, 1);
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KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN), 2000);
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ret = freq_qos_remove_request(&req2);
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KUNIT_EXPECT_EQ(test, ret, 1);
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KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN), 1000);
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ret = freq_qos_remove_request(&req1);
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KUNIT_EXPECT_EQ(test, ret, 1);
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KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN),
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FREQ_QOS_MIN_DEFAULT_VALUE);
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}
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/* Test that requests for MAX_DEFAULT_VALUE have no effect */
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static void freq_qos_test_maxdef(struct kunit *test)
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{
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struct freq_constraints qos;
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struct freq_qos_request req1, req2;
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int ret;
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freq_constraints_init(&qos);
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memset(&req1, 0, sizeof(req1));
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memset(&req2, 0, sizeof(req2));
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KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MAX),
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FREQ_QOS_MAX_DEFAULT_VALUE);
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ret = freq_qos_add_request(&qos, &req1, FREQ_QOS_MAX,
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FREQ_QOS_MAX_DEFAULT_VALUE);
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KUNIT_EXPECT_EQ(test, ret, 0);
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ret = freq_qos_add_request(&qos, &req2, FREQ_QOS_MAX,
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FREQ_QOS_MAX_DEFAULT_VALUE);
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KUNIT_EXPECT_EQ(test, ret, 0);
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/* Add max 1000 */
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ret = freq_qos_update_request(&req1, 1000);
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KUNIT_EXPECT_EQ(test, ret, 1);
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KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MAX), 1000);
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/* Add max 2000, no impact */
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ret = freq_qos_update_request(&req2, 2000);
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KUNIT_EXPECT_EQ(test, ret, 0);
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KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MAX), 1000);
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/* Remove max 1000, new max 2000 */
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ret = freq_qos_remove_request(&req1);
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KUNIT_EXPECT_EQ(test, ret, 1);
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KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MAX), 2000);
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}
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/*
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* Test that a freq_qos_request can be added again after removal
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*
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* This issue was solved by commit 05ff1ba412fd ("PM: QoS: Invalidate frequency
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* QoS requests after removal")
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*/
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static void freq_qos_test_readd(struct kunit *test)
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{
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struct freq_constraints qos;
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struct freq_qos_request req;
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int ret;
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freq_constraints_init(&qos);
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memset(&req, 0, sizeof(req));
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KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN),
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FREQ_QOS_MIN_DEFAULT_VALUE);
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/* Add */
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ret = freq_qos_add_request(&qos, &req, FREQ_QOS_MIN, 1000);
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KUNIT_EXPECT_EQ(test, ret, 1);
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KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN), 1000);
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/* Remove */
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ret = freq_qos_remove_request(&req);
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KUNIT_EXPECT_EQ(test, ret, 1);
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KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN),
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FREQ_QOS_MIN_DEFAULT_VALUE);
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/* Add again */
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ret = freq_qos_add_request(&qos, &req, FREQ_QOS_MIN, 2000);
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KUNIT_EXPECT_EQ(test, ret, 1);
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KUNIT_EXPECT_EQ(test, freq_qos_read_value(&qos, FREQ_QOS_MIN), 2000);
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}
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static struct kunit_case pm_qos_test_cases[] = {
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KUNIT_CASE(freq_qos_test_min),
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KUNIT_CASE(freq_qos_test_maxdef),
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KUNIT_CASE(freq_qos_test_readd),
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{},
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};
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static struct kunit_suite pm_qos_test_module = {
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.name = "qos-kunit-test",
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.test_cases = pm_qos_test_cases,
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};
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kunit_test_suites(&pm_qos_test_module);
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