Add an instrument that uses devlib's PerfettoCollector to collect a
Perfetto trace during the execution of a workload.
The instrument takes a path to a Perfetto config file which specifies
how Perfetto should be configured for the tracing.
Signed-off-by: Kajetan Puchalski <kajetan.puchalski@arm.com>
Allow optionally setting the top level ftrace buffer size separately
from the devlib buffer size. The parameter will be passed to the devlib
FtraceCollector and take effect there.
Signed-off-by: Kajetan Puchalski <kajetan.puchalski@arm.com>
- Add copyright headers to files that did not already have them
- Update the year to the last year the file was modified in files with
existing headers.
Extracting trace and pulling the trace file from the target can take a
relatively long time, as the trace file can be tens, and even hundreds,
of MB. Add an info-level log message to inform the user why WA execution
appears to have paused for a few seconds.
Both the instrument and utility functions were called `trace-cmd.py`.
`"-"`'s are not valid python identifiers therefore when trying to import
the `trace-cmd` module this causes an error.
