Bug 1148546

Cause: Previously plugin_scheduler has no support for tuning of newly spawned processes. Consequence: plugin_scheduler could only tune CPU affinity and real-time scheduling attributes of processes that existed when the Tuned profile was applied. Newly spawned processes weren't tuned until Tuned was restarted or the Tuned profile re-appplied. Fix: The code was added to plugin_scheduler that monitors newly spawned processes through perf infrastructure and those which match the settings in Tuned profile are also tuned. Result: Newly spawned processes are tuned the same way as the processes that existed when the Tuned profile was applied. Moreover if the newly spawned processes exist when the Tuned profile is unapplied, their tuning is rolled back.