Make test suite setscheduler calls asynchronously. Remove the waits in the test cases and add a new testcase to verify the correctness of the setscheduler priority propagation. Signed-off-by: Thomas Gleixner <[email protected]> Signed-off-by: Ingo Molnar <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>