tree e5d76228bf9cdb626227122b5c51e501f5fd407f
parent d6c5a064609241d747b6aa68207f33dc7cc9bddf
author Alan Leung <acleung@google.com> 1468432794 -0700
committer Alan Leung <acleung@google.com> 1468891843 +0000

Fix thread priority after boosting.

The previous CL wrongly restores all priority to nice 0.

This CL changes two things:

1. It remembers and restores the previous priority.
2. If the thread has priority of < -2. Do not set it to -2.

BUG: 29930920
Change-Id: I927e060d789c9bbf92f6a166f44317d9db0f5205
(cherry picked from commit d6e67e6a165e0f1161090730996f5e82d3b6421b)