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Patch series "selftests/damon: add Python-written DAMON functionality tests", v2. DAMON exports most of its functionality via its sysfs interface. Hence most DAMON functionality tests could be implemented using the interface. However, because the interfaces require simple but multiple operations for many controls, writing all such tests from the scratch could be repetitive and time consuming. Implement a minimum DAMON sysfs control module, and a couple of DAMON functionality tests using the control module. The first test is for ensuring minimum accuracy of data access monitoring, and the second test is for finding if a previously found and fixed bug is introduced again. Note that the DAMON sysfs control module is only for avoiding duplicating code in tests. For convenient and general control of DAMON, users should use DAMON user-space tools that developed for the purpose, such as damo[1]. [1] https://github.com/damonitor/damo Patches Sequence ---------------- This patchset is constructed with five patches. The first three patches implement a Python-written test implementation-purpose DAMON sysfs control module. The implementation is incrementally done in the sequence of the basic data structure (first patch) first, kdamonds start command (second patch) next, and finally DAMOS tried bytes update command (third patch). Then two patches for implementing selftests using the module follows. The fourth patch implements a basic functionality test of DAMON for working set estimation accuracy. Finally, the fifth patch implements a corner case test for a previously found bug. This patch (of 5): Implement a python module for DAMON sysfs controls. The module is aimed to be useful for writing DAMON functionality tests in future. Nonetheless, this module is only representing a subset of DAMON sysfs files. Following commits will implement more DAMON sysfs controls. Link: https://lkml.kernel.org/r/20231212194810.54457-1-sj@kernel.org Link: https://lkml.kernel.org/r/20231212194810.54457-2-sj@kernel.org Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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