The basic idea is add timestamp for MmFilemapAddToPageCache.
Treat the first receiving MmFilemapAddToPageCache timestamp as
the start time. The end time is the sum of start time and duration.
Any MmFilemapAddToPageCache after end time is filtered out.
Test: pytest trace2db_test.py
Bug: 137398235
Change-Id: Ib9c439f3ae0ca666eacb08492361217d89adec34
Compiler will be used for experimentation purpose since it's both easier
to develop in python and it accepts ftrace, making it very easy to write
complicated-experimental changes that we aren't sure are worth it yet
for the on-device C++/perfetto compiler.
This 'new' compiler accepts ftrace/systrace files as input,
then generates an in-memory sqlite3 database (using the trace_analyzer
source code), and finally code-generates a TraceFile.pb protobuf.
(Also refactor trace_analyzer into a library, and update it to
parse systrace.html files)
Limitations: currently does not accept perfetto_trace.pb files due to
'ofs' fields missing (see bug#135555191)
Test: py.test-3 frameworks/base/startop/scripts
Test: ./compiler.py -i tmp_sargo/textcache -t tmp_sargo/trace.html -o tmp/output.pb
Test: ./compiler.py -i tmp_sargo/textcache -t tmp_sargo/trace.html -o tmp/output.pb -f '^/data'
Test: ./trace_analyzer music_run.trace tmp_dbs/12345.db
Bug: 135557978
Bug: 134789969
Change-Id: Ic8295900ee9e634b4cfd8cf99b671ae08d2ea4f7
Adds a simple python parser to convert .ftrace file into
sqlite3 database.
The rest of the analysis logic is done through a series of SQL
commands that build tables/views/select queries.
Bug: 134705245
Test: trace_analyzer some_ftrace_file.trace tmp_file.db
Change-Id: I25274e25a0ab1f091ae4e6161e6726e006e346a5
