tests: avoid sort-spinlock-abuse false positive under heavy load

* tests/misc/sort-spinlock-abuse: Classify as "very expensive" to
avoid unwarranted failure once and for all.

diff --git a/tests/misc/sort-spinlock-abuse b/tests/misc/sort-spinlock-abuse
index 4cf8866..0e1c86b 100755 (executable)
--- a/tests/misc/sort-spinlock-abuse
+++ b/tests/misc/sort-spinlock-abuse
@@ -20,6 +20,12 @@
 . "${srcdir=.}/init.sh"; path_prepend_ ../src
 print_ver_ sort
 
+# This isn't terribly expensive, but it must not be run under heavy load.
+# Since the "very expensive" are already run only with -j1, adding this
+# test to the list ensures it still gets _some_ (albeit minimal) coverage
+# while not causing false-positive failures in day to day runs.
+very_expensive_
+
 grep '^#define HAVE_PTHREAD_T 1' "$CONFIG_HEADER" > /dev/null ||
   skip_ 'requires pthreads'