The kdamond 'refresh_ms' sysfs file makes DAMON periodically update its read-only sysfs files (DAMOS stats, tuned monitoring intervals and the kdamond pid) on its own, so users don't have to write update keywords such as 'update_schemes_stats' to the 'state' file. It has no selftest coverage.
The first patch adds refresh_ms support to the _damon_sysfs.py test control module. The second adds a test that sets refresh_ms and confirms a scheme's stats are updated under sysfs without an explicit update request; the test skips on kernels that predate the refresh_ms file. Tested on current mainline under a DAMON-enabled kernel: the new test passes and the existing DAMON selftests show no new failures. Ruslan Valiyev (2): selftests/damon/_damon_sysfs: support kdamond refresh_ms selftests/damon/sysfs_refresh: test kdamond refresh_ms tools/testing/selftests/damon/Makefile | 1 + tools/testing/selftests/damon/_damon_sysfs.py | 9 ++- .../testing/selftests/damon/sysfs_refresh.py | 75 +++++++++++++++++++ 3 files changed, 84 insertions(+), 1 deletion(-) create mode 100755 tools/testing/selftests/damon/sysfs_refresh.py base-commit: 174914ea551314c52a61713b9c4bde9e42d48073 -- 2.43.0
