ktest: Fix breakage from change of oldnoconfig to olddefconfig

Commit fb16d891 "kconfig: replace 'oldnoconfig' with 'olddefconfig', and
keep the old name", changed ktest's default config update from
oldnoconfig to olddefconfig without adding oldnoconfig as a backup.
The make oldnoconfig works much better than its backup of:
   yes '' | make oldconfig

But due to this change, and the fact that ktest is used to build lots of
older kernels (and for bisects), it forgoes the oldnoconfig completely.

Cc: Adam Lee <adam8157@gmail.com>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl
index 067337b..6b1e0c5 100755 (executable)
--- a/tools/testing/ktest/ktest.pl
+++ b/tools/testing/ktest/ktest.pl
@@ -1966,10 +1966,14 @@ sub make_oldconfig {
 
     if (!run_command "$make olddefconfig") {
        # Perhaps olddefconfig doesn't exist in this version of the kernel
-       # try a yes '' | oldconfig
-       doprint "olddefconfig failed, trying yes '' | make oldconfig\n";
-       run_command "yes '' | $make oldconfig" or
-           dodie "failed make config oldconfig";
+       # try oldnoconfig
+       doprint "olddefconfig failed, trying make oldnoconfig\n";
+       if (!run_command "$make oldnoconfig") {
+           doprint "oldnoconfig failed, trying yes '' | make oldconfig\n";
+           # try a yes '' | oldconfig
+           run_command "yes '' | $make oldconfig" or
+               dodie "failed make config oldconfig";
+       }
     }
 }