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selftests/damon: add tests for DAMON_LRU_SORT's enabled parameter

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Add simple test cases for DAMON_LRU_SORT's 'enabled' parameter.  Those
tests are focusing on the synchronous behavior of DAMON_RECLAIM enabling
and disabling.

Link: https://lkml.kernel.org/r/20221025173650.90624-5-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
SeongJae Park 2022-10-25 17:36:50 +00:00 committed by Andrew Morton
parent 7a034fbba3
commit 9cd6ffa602
2 changed files with 42 additions and 1 deletions
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2
tools/testing/selftests/damon/Makefile
View File

@ -8,6 +8,6 @@ TEST_PROGS = debugfs_attrs.sh debugfs_schemes.sh debugfs_target_ids.sh
TEST_PROGS += debugfs_empty_targets.sh debugfs_huge_count_read_write.sh
TEST_PROGS += debugfs_duplicate_context_creation.sh
TEST_PROGS += sysfs.sh
TEST_PROGS += reclaim.sh
TEST_PROGS += reclaim.sh lru_sort.sh
include ../lib.mk

41
tools/testing/selftests/damon/lru_sort.sh Normal file
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@ -0,0 +1,41 @@
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# Kselftest framework requirement - SKIP code is 4.
ksft_skip=4
if [ $EUID -ne 0 ]
then
echo "Run as root"
exit $ksft_skip
fi
damon_lru_sort_enabled="/sys/module/damon_lru_sort/parameters/enabled"
if [ ! -f "$damon_lru_sort_enabled" ]
then
echo "No 'enabled' file. Maybe DAMON_LRU_SORT not built"
exit $ksft_skip
fi
nr_kdamonds=$(pgrep kdamond | wc -l)
if [ "$nr_kdamonds" -ne 0 ]
then
echo "Another kdamond is running"
exit $ksft_skip
fi
echo Y > "$damon_lru_sort_enabled"
nr_kdamonds=$(pgrep kdamond | wc -l)
if [ "$nr_kdamonds" -ne 1 ]
then
echo "kdamond is not turned on"
exit 1
fi
echo N > "$damon_lru_sort_enabled"
nr_kdamonds=$(pgrep kdamond | wc -l)
if [ "$nr_kdamonds" -ne 0 ]
then
echo "kdamond is not turned off"
exit 1
fi