Commit 4cc0ee77 authored by SeongJae Park's avatar SeongJae Park Committed by Andrew Morton
Browse files

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

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

Link: https://lkml.kernel.org/r/20221025173650.90624-3-sj@kernel.org


Signed-off-by: default avatarSeongJae Park <sj@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 04e98764

tools/testing/selftests/damon/Makefile

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Original line number Diff line number Diff line
@@ -8,5 +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



include ../lib.mk

tools/testing/selftests/damon/reclaim.sh

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Original line number Diff line number Diff line 
#!/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_reclaim_enabled="/sys/module/damon_reclaim/parameters/enabled"

if [ ! -f "$damon_reclaim_enabled" ]

then

	echo "No 'enabled' file.  Maybe DAMON_RECLAIM 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_reclaim_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_reclaim_enabled"

nr_kdamonds=$(pgrep kdamond | wc -l)

if [ "$nr_kdamonds" -ne 0 ]

then

	echo "kdamond is not turned off"

	exit 1

fi