[PATCH] selftests/damon: Remove the remaining test scripts for DAMON debugfs interface

[PATCH] selftests/damon: Remove the remaining test scripts for DAMON debugfs interface

[Enze Li]

From: Enze Li <lienze@kylinos.cn>

DAMON has dropped debugfs support; therefore, remove these unused
scripts.

Fixes: 5ec4333b1967 ("mm/damon: remove DAMON debugfs interface")
Signed-off-by: Enze Li <lienze@kylinos.cn>
---
 tools/testing/selftests/damon/Makefile        |  2 +-
 .../selftests/damon/_chk_dependency.sh        | 52 ---------------
 .../selftests/damon/_debugfs_common.sh        | 64 -------------------
 3 files changed, 1 insertion(+), 117 deletions(-)
 delete mode 100644 tools/testing/selftests/damon/_chk_dependency.sh
 delete mode 100644 tools/testing/selftests/damon/_debugfs_common.sh

diff --git a/tools/testing/selftests/damon/Makefile b/tools/testing/selftests/damon/Makefile
index ecbf07afc6dd..ff21524be458 100644
--- a/tools/testing/selftests/damon/Makefile
+++ b/tools/testing/selftests/damon/Makefile
@@ -3,7 +3,7 @@
 
 TEST_GEN_FILES += access_memory access_memory_even
 
-TEST_FILES = _chk_dependency.sh _damon_sysfs.py
+TEST_FILES = _damon_sysfs.py
 
 # functionality tests
 TEST_PROGS += sysfs.sh
diff --git a/tools/testing/selftests/damon/_chk_dependency.sh b/tools/testing/selftests/damon/_chk_dependency.sh
deleted file mode 100644
index dda3a87dc00a..000000000000
--- a/tools/testing/selftests/damon/_chk_dependency.sh
+++ /dev/null
@@ -1,52 +0,0 @@
-#!/bin/bash
-# SPDX-License-Identifier: GPL-2.0
-
-# Kselftest framework requirement - SKIP code is 4.
-ksft_skip=4
-
-DBGFS=$(grep debugfs /proc/mounts --max-count 1 | awk '{print $2}')
-if [ "$DBGFS" = "" ]
-then
-	echo "debugfs not mounted"
-	exit $ksft_skip
-fi
-
-DBGFS+="/damon"
-
-if [ $EUID -ne 0 ];
-then
-	echo "Run as root"
-	exit $ksft_skip
-fi
-
-if [ ! -d "$DBGFS" ]
-then
-	echo "$DBGFS not found"
-	exit $ksft_skip
-fi
-
-if [ -f "$DBGFS/monitor_on_DEPRECATED" ]
-then
-	monitor_on_file="monitor_on_DEPRECATED"
-else
-	monitor_on_file="monitor_on"
-fi
-
-for f in attrs target_ids "$monitor_on_file"
-do
-	if [ ! -f "$DBGFS/$f" ]
-	then
-		echo "$f not found"
-		exit 1
-	fi
-done
-
-permission_error="Operation not permitted"
-for f in attrs target_ids "$monitor_on_file"
-do
-	status=$( cat "$DBGFS/$f" 2>&1 )
-	if [ "${status#*$permission_error}" != "$status" ]; then
-		echo "Permission for reading $DBGFS/$f denied; maybe secureboot enabled?"
-		exit $ksft_skip
-	fi
-done
diff --git a/tools/testing/selftests/damon/_debugfs_common.sh b/tools/testing/selftests/damon/_debugfs_common.sh
deleted file mode 100644
index 54d45791b0d9..000000000000
--- a/tools/testing/selftests/damon/_debugfs_common.sh
+++ /dev/null
@@ -1,64 +0,0 @@
-#!/bin/bash
-# SPDX-License-Identifier: GPL-2.0
-
-test_write_result() {
-	file=$1
-	content=$2
-	orig_content=$3
-	expect_reason=$4
-	expected=$5
-
-	if [ "$expected" = "0" ]
-	then
-		echo "$content" > "$file"
-	else
-		echo "$content" > "$file" 2> /dev/null
-	fi
-	if [ $? -ne "$expected" ]
-	then
-		echo "writing $content to $file doesn't return $expected"
-		echo "expected because: $expect_reason"
-		echo "$orig_content" > "$file"
-		exit 1
-	fi
-}
-
-test_write_succ() {
-	test_write_result "$1" "$2" "$3" "$4" 0
-}
-
-test_write_fail() {
-	test_write_result "$1" "$2" "$3" "$4" 1
-}
-
-test_content() {
-	file=$1
-	orig_content=$2
-	expected=$3
-	expect_reason=$4
-
-	content=$(cat "$file")
-	if [ "$content" != "$expected" ]
-	then
-		echo "reading $file expected $expected but $content"
-		echo "expected because: $expect_reason"
-		echo "$orig_content" > "$file"
-		exit 1
-	fi
-}
-
-source ./_chk_dependency.sh
-
-damon_onoff="$DBGFS/monitor_on"
-if [ -f "$DBGFS/monitor_on_DEPRECATED" ]
-then
-	damon_onoff="$DBGFS/monitor_on_DEPRECATED"
-else
-	damon_onoff="$DBGFS/monitor_on"
-fi
-
-if [ $(cat "$damon_onoff") = "on" ]
-then
-	echo "monitoring is on"
-	exit $ksft_skip
-fi

base-commit: 3b07108ada81a8ebcebf1fe61367b4e436c895bd
-- 
2.43.0

Re: [PATCH] selftests/damon: Remove the remaining test scripts for DAMON debugfs interface

[SeongJae Park]

On Fri, 11 Apr 2025 10:43:32 +0800 Enze Li <enze.li@linux.dev> wrote:

> From: Enze Li <lienze@kylinos.cn>
> 
> DAMON has dropped debugfs support; therefore, remove these unused
> scripts.

Nice finding, thank you for this patch!

> 
> Fixes: 5ec4333b1967 ("mm/damon: remove DAMON debugfs interface")
> Signed-off-by: Enze Li <lienze@kylinos.cn>

Reviewed-by: SeongJae Park <sj@kernel.org>


Thanks,
SJ

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