tree ab767ef5a0a7d4df817667d097f0e44333930408
parent 90c2cd36c6284a06a5246a03c9d554a50f634f32
author Yabin Cui <yabinc@google.com> 1466654332 -0700
committer Yabin Cui <yabinc@google.com> 1467857391 -0700

Simpleperf: add auto generated summaries in stat command.

When there are summaries monitoring one event type in user
space and kernel space at the same time period, we can automatically
generate a summary combining the results generated in user space and
kernel space.
This can help to decrease the number of needed hardware counters.

Also adjust scale check when deciding whether an event is monitored
all the time.

Bug: 29213742
Change-Id: I272e21420700c10fccb1336a1e60138db8d13b3d
Test: run simpleperf_unit_test.