tree 9ffea4161c1d263aedd221a54fcb73d74689b28a
parent f0d1100a7149dce7efa44e42f9c1f0952e6c9ab0
author Ryan Savitski <rsavitski@google.com> 1573223241 +0000
committer Ryan Savitski <rsavitski@google.com> 1573223241 +0000

ui: remove "idle process" process/thread tracks (utid 0)

Each cpu core appears to have its own "idle thread" from the perspective of the
scheduling events (e.g. swapper/0, swapper/1, etc). But since all of them share
the same tid, they get collapsed into a single thread in the trace processor
tables.

The UI thread track for the idle process is therefore meaningless, as
it juxtaposes scheduling events across all cpu cores.

Note: I don't know what I'm doing with the UI code. I didn't touch any of the
other thread-table queries, as they didn't seem relevant.
Change-Id: I64d62ad4d94ea258c526893f50387e6045810e85