Re: [ndctl PATCH] ndctl, test: make btt-pad-compat dynamically detect a patched kernel

The btt-pad-compat test can detect whether it is running on a patched kernel by checking for the two newly added debugfs files in the fix for this bug. Use that instead of hard coding a kernel version dependency. Cc: Dan Williams <dan.j.williams(a)intel.com&gt; Signed-off-by: Vishal Verma <vishal.l.verma(a)intel.com&gt; --- test/btt-pad-compat.sh | 15 ++++----------- 1 file changed, 4 insertions(+), 11 deletions(-) diff --git a/test/btt-pad-compat.sh b/test/btt-pad-compat.sh index d10efe3..faa773c 100755 --- a/test/btt-pad-compat.sh +++ b/test/btt-pad-compat.sh @@ -41,17 +41,6 @@ err() exit "$rc" } -check_min_kver() -{ - local ver="$1" - : "${KVER:=$(uname -r)}" - - [ -n "$ver" ] || return 1 - [[ "$ver" == "$(echo -e "$ver\n$KVER" | sort -V | head -1)" ]] -} - -check_min_kver "4.15" || { echo "kernel $KVER may not have btt padding compat fixes"; exit "$rc"; } - check_prereq() { if ! command -v "$1" >/dev/null; then @@ -70,6 +59,10 @@ create() [ $size -gt 0 ] || err "$LINENO" 2 bttdev=$(cat /sys/bus/nd/devices/$dev/holder) [ -n "$bttdev" ] || err "$LINENO" 2 + if [ ! -e /sys/kernel/debug/btt/$bttdev/arena0/log_index_0 ]; then + echo "kernel $(uname -r) seems to be missing the BTT compatibility fixes, skipping" + exit 77 + fi }