From 501e3dc505f7c8ce8da0532db81e99fae6688074 Mon Sep 17 00:00:00 2001 From: SeongJae Park Date: Wed, 7 Feb 2024 12:31:34 -0800 Subject: [PATCH] selftests/damon/_chk_dependency: get debugfs mount point from /proc/mounts DAMON debugfs selftests dependency checker assumes debugfs would be mounted at /sys/kernel/debug. That would be ok for many cases, but some systems might mounted the file system on some different places. Parse the real mount point using /proc/mounts file. Link: https://lkml.kernel.org/r/20240207203134.69976-9-sj@kernel.org Signed-off-by: SeongJae Park Cc: Shuah Khan Signed-off-by: Andrew Morton --- tools/testing/selftests/damon/_chk_dependency.sh | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/damon/_chk_dependency.sh b/tools/testing/selftests/damon/_chk_dependency.sh index 350f8c2b071d..dda3a87dc00a 100644 --- a/tools/testing/selftests/damon/_chk_dependency.sh +++ b/tools/testing/selftests/damon/_chk_dependency.sh @@ -4,7 +4,14 @@ # Kselftest framework requirement - SKIP code is 4. ksft_skip=4 -DBGFS=/sys/kernel/debug/damon +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