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2020-12-02fs: ext4: Modify inode-test.c to use KUnit parameterized testing featureArpitha Raghunandan1-156/+164
Modify fs/ext4/inode-test.c to use the parameterized testing feature of KUnit. Signed-off-by: Arpitha Raghunandan <98.arpi@gmail.com> Signed-off-by: Marco Elver <elver@google.com> Reviewed-by: Marco Elver <elver@google.com> Tested-by: David Gow <davidgow@google.com> Reviewed-by: David Gow <davidgow@google.com> Reviewed-by: Iurii Zaikin <yzaikin@google.com> Acked-by: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2020-01-09kunit: allow kunit tests to be loaded as a moduleAlan Maguire1-1/+3
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>
2019-12-09fs/ext4/inode-test: Fix inode test on 32 bit platforms.Iurii Zaikin1-1/+1
Fixes the issue caused by the fact that in C in the expression of the form -1234L only 1234L is the actual literal, the unary minus is an operation applied to the literal. Which means that to express the lower bound for the type one has to negate the upper bound and subtract 1. Original error: Expected test_data[i].expected.tv_sec == timestamp.tv_sec, but test_data[i].expected.tv_sec == -2147483648 timestamp.tv_sec == 2147483648 1901-12-13 Lower bound of 32bit < 0 timestamp, no extra bits: msb:1 lower_bound:1 extra_bits: 0 Expected test_data[i].expected.tv_sec == timestamp.tv_sec, but test_data[i].expected.tv_sec == 2147483648 timestamp.tv_sec == 6442450944 2038-01-19 Lower bound of 32bit <0 timestamp, lo extra sec bit on: msb:1 lower_bound:1 extra_bits: 1 Expected test_data[i].expected.tv_sec == timestamp.tv_sec, but test_data[i].expected.tv_sec == 6442450944 timestamp.tv_sec == 10737418240 2174-02-25 Lower bound of 32bit <0 timestamp, hi extra sec bit on: msb:1 lower_bound:1 extra_bits: 2 not ok 1 - inode_test_xtimestamp_decoding not ok 1 - ext4_inode_test Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Iurii Zaikin <yzaikin@google.com> Tested-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Brendan Higgins <brendanhiggins@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2019-10-23ext4: add kunit test for decoding extended timestampsIurii Zaikin1-0/+272
KUnit tests for decoding extended 64 bit timestamps that verify the seconds part of [a/c/m] timestamps in ext4 inode structs are decoded correctly. Test data is derived from the table in the Inode Timestamps section of Documentation/filesystems/ext4/inodes.rst. KUnit tests run during boot and output the results to the debug log in TAP format (http://testanything.org/). Only useful for kernel devs running KUnit test harness and are not for inclusion into a production build. Signed-off-by: Iurii Zaikin <yzaikin@google.com> Reviewed-by: Theodore Ts'o <tytso@mit.edu> Reviewed-by: Brendan Higgins <brendanhiggins@google.com> Tested-by: Brendan Higgins <brendanhiggins@google.com> Reviewed-by: Shuah Khan <skhan@linuxfoundation.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>