selftests/nolibc: always keep test kernel configuration up to date

Avoid using a stale test kernel configuration by always synchronizing
it to the current source tree.
kbuild is smart enough to avoid spurious rebuilds.

Shuffle the code around a bit to keep all the commands with side-effects
together.

Acked-by: Willy Tarreau <w@1wt.eu>
Link: https://lore.kernel.org/r/20250123-nolibc-config-v2-5-5701c35995d6@weissschuh.net
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>

diff --git a/tools/testing/selftests/nolibc/run-tests.sh b/tools/testing/selftests/nolibc/run-tests.sh
index 9c5160c5388122deeeb59ecfced7633000d69b10..bc4e92b4f1b98278a0a72345a5cd67f1a429b6a2 100755 (executable)
--- a/tools/testing/selftests/nolibc/run-tests.sh
+++ b/tools/testing/selftests/nolibc/run-tests.sh
@@ -157,10 +157,6 @@ test_arch() {
        fi
        MAKE=(make -j"${nproc}" XARCH="${arch}" CROSS_COMPILE="${cross_compile}" LLVM="${llvm}" O="${build_dir}")
 
-       mkdir -p "$build_dir"
-       if [ "$test_mode" = "system" ] && [ ! -f "${build_dir}/.config" ]; then
-               swallow_output "${MAKE[@]}" defconfig
-       fi
        case "$test_mode" in
                'system')
                        test_target=run
@@ -173,6 +169,9 @@ test_arch() {
                        exit 1
        esac
        printf '%-15s' "$arch:"
+
+       mkdir -p "$build_dir"
+       swallow_output "${MAKE[@]}" defconfig
        swallow_output "${MAKE[@]}" CFLAGS_EXTRA="$CFLAGS_EXTRA" "$test_target" V=1
        cp run.out run.out."${arch}"
        "${MAKE[@]}" report | grep passed