patches/old/selftests-damon-introduce-_commonsh-to-host-shared-function.patch

From: Enze Li <lienze@kylinos.cn>
Subject: selftests/damon: introduce _common.sh to host shared function
Date: Fri, 18 Jul 2025 14:42:17 +0800

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>
---

 tools/testing/selftests/damon/_common.sh                         |   11 ++++++++++
 tools/testing/selftests/damon/lru_sort.sh                        |    8 ++-----
 tools/testing/selftests/damon/reclaim.sh                         |    8 ++-----
 tools/testing/selftests/damon/sysfs.sh                           |   11 +---------
 tools/testing/selftests/damon/sysfs_update_removed_scheme_dir.sh |    8 ++-----
 5 files changed, 22 insertions(+), 24 deletions(-)

diff --git a/tools/testing/selftests/damon/_common.sh a/tools/testing/selftests/damon/_common.sh
new file mode 100644
--- /dev/null
+++ a/tools/testing/selftests/damon/_common.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+check_dependencies()
+{
+	if [ $EUID -ne 0 ]
+	then
+		echo "Run as root"
+		exit $ksft_skip
+	fi
+}
--- a/tools/testing/selftests/damon/lru_sort.sh~selftests-damon-introduce-_commonsh-to-host-shared-function
+++ a/tools/testing/selftests/damon/lru_sort.sh
@@ -1,14 +1,12 @@
 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 
+source _common.sh
+
 # Kselftest framework requirement - SKIP code is 4.
 ksft_skip=4
 
-if [ $EUID -ne 0 ]
-then
-	echo "Run as root"
-	exit $ksft_skip
-fi
+check_dependencies
 
 damon_lru_sort_enabled="/sys/module/damon_lru_sort/parameters/enabled"
 if [ ! -f "$damon_lru_sort_enabled" ]
--- a/tools/testing/selftests/damon/reclaim.sh~selftests-damon-introduce-_commonsh-to-host-shared-function
+++ a/tools/testing/selftests/damon/reclaim.sh
@@ -1,14 +1,12 @@
 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 
+source _common.sh
+
 # Kselftest framework requirement - SKIP code is 4.
 ksft_skip=4
 
-if [ $EUID -ne 0 ]
-then
-	echo "Run as root"
-	exit $ksft_skip
-fi
+check_dependencies
 
 damon_reclaim_enabled="/sys/module/damon_reclaim/parameters/enabled"
 if [ ! -f "$damon_reclaim_enabled" ]
--- a/tools/testing/selftests/damon/sysfs.sh~selftests-damon-introduce-_commonsh-to-host-shared-function
+++ a/tools/testing/selftests/damon/sysfs.sh
@@ -1,6 +1,8 @@
 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 
+source _common.sh
+
 # Kselftest frmework requirement - SKIP code is 4.
 ksft_skip=4
 
@@ -364,14 +366,5 @@ test_damon_sysfs()
 	test_kdamonds "$damon_sysfs/kdamonds"
 }
 
-check_dependencies()
-{
-	if [ $EUID -ne 0 ]
-	then
-		echo "Run as root"
-		exit $ksft_skip
-	fi
-}
-
 check_dependencies
 test_damon_sysfs "/sys/kernel/mm/damon/admin"
--- a/tools/testing/selftests/damon/sysfs_update_removed_scheme_dir.sh~selftests-damon-introduce-_commonsh-to-host-shared-function
+++ a/tools/testing/selftests/damon/sysfs_update_removed_scheme_dir.sh
@@ -1,14 +1,12 @@
 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 
+source _common.sh
+
 # Kselftest framework requirement - SKIP code is 4.
 ksft_skip=4
 
-if [ $EUID -ne 0 ]
-then
-	echo "Run as root"
-	exit $ksft_skip
-fi
+check_dependencies
 
 damon_sysfs="/sys/kernel/mm/damon/admin"
 if [ ! -d "$damon_sysfs" ]
_