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instruments: Add Perfetto instrument

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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>
This commit is contained in:
Kajetan Puchalski
2023-02-07 13:49:19 +00:00
committed by Marc Bonnici
parent 775b24f7a3
commit 8d4fe9556b
2 changed files with 104 additions and 1 deletions

4
wa/instruments/trace_cmd.py

@ -22,7 +22,7 @@ from devlib import FtraceCollector
from wa import Instrument, Parameter
from wa.framework import signal
from wa.framework.instrument import very_slow
from wa.framework.instrument import very_slow, is_installed
from wa.framework.exception import InstrumentError
from wa.utils.types import list_of_strings
from wa.utils.misc import which
@ -235,6 +235,8 @@ class TraceCmdInstrument(Instrument):
def validate(self):
if self.report and not self.report_on_target and not which('trace-cmd'):
raise InstrumentError('trace-cmd is not in PATH; is it installed?')
if is_installed('perfetto'):
raise InstrumentError('trace-cmd cannot be used at the same time as perfetto')
def mark_start(self, context):
if self.is_enabled: