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Building and running the subsuite 'damon' of kselftest, shows the following issues: selftests: damon: debugfs_attrs.sh /sys/kernel/debug/damon not found By creating a config file enabling DAMON fragments in the selftests/damon/ directory the tests pass. Link: https://lkml.kernel.org/r/20230412092854.3306197-1-anders.roxell@linaro.org Fixes: b348eb7abd09 ("mm/damon: add user space selftests") Signed-off-by: Anders Roxell <anders.roxell@linaro.org> Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org> Reviewed-by: SeongJae Park <sj@kernel.org> Acked-by: Shuah Khan <skhan@linuxfoundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>