Use relaxed increment for stats in ring buffer. am: 34e6c9d3d1
Use relaxed increment for stats in ring buffer.
am: 34e6c9d3d1

Change-Id: I0ca66a3190784c820a0ef4e81bf0fb94656fdb29

google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto