linux/tools/testing/selftests/damon/reclaim.sh
Enze Li 511914506d selftests/damon: introduce _common.sh to host shared function
The current test scripts contain duplicated root permission checks in
multiple locations.  This patch consolidates these checks into _common.sh
to eliminate code redundancy.

Link: https://lkml.kernel.org/r/20250718064217.299300-1-lienze@kylinos.cn
Signed-off-by: Enze Li <lienze@kylinos.cn>
Reviewed-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-07-26 15:08:21 -07:00

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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
source _common.sh
# Kselftest framework requirement - SKIP code is 4.
ksft_skip=4
check_dependencies
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