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When CONFIG_DAMON_SYSFS is disabled, the selftests fail with the following outputs, not ok 2 selftests: damon: sysfs_update_schemes_tried_regions_wss_estimation.py # exit=1 not ok 3 selftests: damon: damos_quota.py # exit=1 not ok 4 selftests: damon: damos_quota_goal.py # exit=1 not ok 5 selftests: damon: damos_apply_interval.py # exit=1 not ok 6 selftests: damon: damos_tried_regions.py # exit=1 not ok 7 selftests: damon: damon_nr_regions.py # exit=1 not ok 11 selftests: damon: sysfs_update_schemes_tried_regions_hang.py # exit=1 The root cause of this issue is that all the testcases above do not check the sysfs interface of DAMON whether it exists or not. With this patch applied, all the testcases above now pass successfully. Link: https://lkml.kernel.org/r/20250531093937.1555159-1-lienze@kylinos.cn Signed-off-by: Enze Li <lienze@kylinos.cn> Reviewed-by: SeongJae Park <sj@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.