Commit 553b0142 authored by SeongJae Park's avatar SeongJae Park Committed by Andrew Morton
Browse files

selftests/damon/sysfs: test filters directory 

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: default avatarSeongJae Park <sj@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 29cbb9a1

tools/testing/selftests/damon/sysfs.sh

+29 −0
Original line number Diff line number Diff line
@@ -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"

}