kcsan: Add atomic builtin test case

Adds test case to kcsan-test module, to test atomic builtin
instrumentation works.

Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Marco Elver 2020-07-03 15:40:31 +02:00 • committed by Paul E. McKenney
commit f9ea631931