tree 842fc06ea802fd1bcbc9f023577e96a0ab522d83
parent 94efaeb36ae65a78a178fd8483c0ef7f0049eeca
author Hector Dearman <hjd@google.com> 1519730257 +0000
committer Hector Dearman <hjd@google.com> 1519730257 +0000

ftrace_reader: Plumb overwrite from page header

The ftrace page header includes a field named "overwrite" which is in some way
related to the number of events overwritten. This plumbs that value to the
FtraceProtoBundle proto. Specifically we add a new field 'overwrite' which is the
total of all overwrite fields from the headers of all kernel ftrace pages we parsed
into this FtraceEventBundle. The value is zero if no overwriting occurred, a number
larger than zero if some overwriting occurred.

While we are here we also:
- Set cpu only once per ftrace_bundle.
- Remove cpu parameter from ParsePage.
- Add metadata out parameter to ParsePage for overwrite, inodes, pids of interest etc.

Bug: 72045210
Change-Id: I985ff880c88101317a2120b43d420fcd8272b113