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selftests/damon/_chk_dependency: get debugfs mount point from /proc/mounts

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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 <sj@kernel.org>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
SeongJae Park 2024-02-07 12:31:34 -08:00 committed by Andrew Morton
parent f08db42b1c
commit 501e3dc505
1 changed files with 8 additions and 1 deletions
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9
tools/testing/selftests/damon/_chk_dependency.sh
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@ -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