atomics: Add test for atomic operations with _relaxed variants

Some atomic operations now have _relaxed/acquire/release variants, this
patch adds some trivial tests for two purposes:

  1. test the behavior of these new operations in single-CPU
     environment.

  2. make their code generated before we actually use them somewhere,
     so that we can examine their assembly code.

Signed-off-by: Boqun Feng <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Davidlohr Bueso <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Paul E. McKenney <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Waiman Long <[email protected]>
Cc: Will Deacon <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>

0 files changed, 0 insertions, 0 deletions