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selftests/damon/sysfs: test filters directory

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Add simple test cases for scheme filters of DAMON sysfs interface.  The
test cases check if the files are populated as expected, receives some
valid inputs, and refuses some invalid inputs.

Link: https://lkml.kernel.org/r/20221205230830.144349-10-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
SeongJae Park 2022-12-05 23:08:28 +00:00 committed by Andrew Morton
parent 29cbb9a13f
commit 553b014244
1 changed files with 29 additions and 0 deletions
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29
tools/testing/selftests/damon/sysfs.sh
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@ -96,6 +96,34 @@ test_stats()
done
}
test_filter()
{
filter_dir=$1
ensure_file "$filter_dir/type" "exist" "600"
ensure_write_succ "$filter_dir/type" "anon" "valid input"
ensure_write_succ "$filter_dir/type" "memcg" "valid input"
ensure_write_fail "$filter_dir/type" "foo" "invalid input"
ensure_file "$filter_dir/matching" "exist" "600"
ensure_file "$filter_dir/memcg_path" "exist" "600"
}
test_filters()
{
filters_dir=$1
ensure_dir "$filters_dir" "exist"
ensure_file "$filters_dir/nr_filters" "exist" "600"
ensure_write_succ "$filters_dir/nr_filters" "1" "valid input"
test_filter "$filters_dir/0"
ensure_write_succ "$filters_dir/nr_filters" "2" "valid input"
test_filter "$filters_dir/0"
test_filter "$filters_dir/1"
ensure_write_succ "$filters_dir/nr_filters" "0" "valid input"
ensure_dir "$filters_dir/0" "not_exist"
ensure_dir "$filters_dir/1" "not_exist"
}
test_watermarks()
{
watermarks_dir=$1
@ -143,6 +171,7 @@ test_scheme()
test_access_pattern "$scheme_dir/access_pattern"
test_quotas "$scheme_dir/quotas"
test_watermarks "$scheme_dir/watermarks"
test_filters "$scheme_dir/filters"
test_stats "$scheme_dir/stats"
test_tried_regions "$scheme_dir/tried_regions"
}