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Jerry Snitselaar
b58904e25f
JIRA: https://issues.redhat.com/browse/RHEL-147902 Upstream-Status: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git commit b820b9077b7f4008cc44a40261aefa681c63c7d3 Author: Marie Zhussupova <marievic@google.com> Date: Tue Aug 26 17:13:34 2025 +0800 kunit: Enable direct registration of parameter arrays to a KUnit test KUnit parameterized tests currently support two primary methods f or getting parameters: 1. Defining custom logic within a generate_params() function. 2. Using the KUNIT_ARRAY_PARAM() and KUNIT_ARRAY_PARAM_DESC() macros with a pre-defined static array and passing the created *_gen_params() to KUNIT_CASE_PARAM(). These methods present limitations when dealing with dynamically generated parameter arrays, or in scenarios where populating parameters sequentially via generate_params() is inefficient or overly complex. This patch addresses these limitations by adding a new `params_array` field to `struct kunit`, of the type `kunit_params`. The `struct kunit_params` is designed to store the parameter array itself, along with essential metadata including the parameter count, parameter size, and a get_description() function for providing custom descriptions for individual parameters. The `params_array` field can be populated by calling the new kunit_register_params_array() macro from within a param_init() function. This will register the array as part of the parameterized test context. The user will then need to pass kunit_array_gen_params() to the KUNIT_CASE_PARAM_WITH_INIT() macro as the generator function, if not providing their own. kunit_array_gen_params() is a KUnit helper that will use the registered array to generate parameters. The arrays passed to KUNIT_ARRAY_PARAM(,DESC) will also be registered to the parameterized test context for consistency as well as for higher availability of the parameter count that will be used for outputting a KTAP test plan for a parameterized test. This modification provides greater flexibility to the KUnit framework, allowing testers to easily register and utilize both dynamic and static parameter arrays. Link: https://lore.kernel.org/r/20250826091341.1427123-5-davidgow@google.com Reviewed-by: David Gow <davidgow@google.com> Reviewed-by: Rae Moar <rmoar@google.com> Signed-off-by: Marie Zhussupova <marievic@google.com> [Only output the test plan if using kunit_array_gen_params --David] Signed-off-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> (cherry picked from commit b820b9077b7f4008cc44a40261aefa681c63c7d3) Signed-off-by: Jerry Snitselaar <jsnitsel@redhat.com>