ktest: Allow a test case to undefine a default value

Allow a test case in the config file to undefine a default
value by specifying the option and equal sign but not assigning
it a value:

  OPTION =

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl
index 3d88be784df01437bc9f9eb6cdd40df6821f0b83..962c0f773e20112f54d0ad63513db7a29d0d05e2 100755 (executable)
--- a/tools/testing/ktest/ktest.pl
+++ b/tools/testing/ktest/ktest.pl
@@ -97,6 +97,11 @@ sub set_value {
        die "Error: Option $lvalue defined more than once!\n";
     }
     $opt{$lvalue} = $rvalue;
+    if ($rvalue =~ /^\s*$/) {
+       delete $opt{$lvalue};
+    } else {
+       $opt{$lvalue} = $rvalue;
+    }
 }
 
 sub read_config {