def _create_event_attributes(event_name, disabled):
"""Creates perf_event_attr structure for perf_event_open syscall"""
attr = pc.PerfEventAttr()
attr.size = pc.PERF_ATTR_SIZE_VER5
if event_name == MetricName.MEMSTALL:
attr.type = pc.PerfType.PERF_TYPE_RAW
attr.config = _get_memstall_config()
elif event_name in pc.HardwareEventNameMap:
attr.type = pc.PerfType.PERF_TYPE_HARDWARE
attr.config = pc.HardwareEventNameMap[event_name]
elif '__r' in event_name:
attr.type = pc.PerfType.PERF_TYPE_RAW
attr.config = _parse_raw_event_name(event_name)
else:
raise Exception('unknown event name %r' % event_name)
log.log(logger.TRACE, 'perf: event_attribute: name=%r type=%r config=%r',
event_name, attr.type, attr.config)
attr.sample_type = pc.PERF_SAMPLE_IDENTIFIER
attr.read_format = (pc.PERF_FORMAT_GROUP
| pc.PERF_FORMAT_TOTAL_TIME_ENABLED
| pc.PERF_FORMAT_TOTAL_TIME_RUNNING
| pc.PERF_FORMAT_ID)
attr.flags = pc.AttrFlags.exclude_guest
if disabled:
attr.flags |= pc.AttrFlags.disabled
return attr
def _create_event_attributes(pmu_type, disabled, event: Event):
"""Creates perf_event_attr structure for perf_event_open syscall"""
attr = pc.PerfEventAttr()
attr.size = pc.PERF_ATTR_SIZE_VER5
attr.type = pmu_type
attr.config = event.config
attr.config1 = event.config1
attr.sample_type = pc.PERF_SAMPLE_IDENTIFIER
attr.read_format = (pc.PERF_FORMAT_GROUP
| pc.PERF_FORMAT_TOTAL_TIME_ENABLED
| pc.PERF_FORMAT_TOTAL_TIME_RUNNING
| pc.PERF_FORMAT_ID)
attr.flags = pc.AttrFlags.inherit
if disabled:
attr.flags |= pc.AttrFlags.disabled
return attr