def get_wbt_lat(device: Device):
wbt_lat_config_path = os.path.join(get_sysfs_path(device.get_device_id()),
"queue/wbt_lat_usec")
return int(
TestRun.executor.run_expect_success(
f"cat {wbt_lat_config_path}").stdout)
def set_wbt_lat(device: Device, value: int):
if value < 0:
raise ValueError("Write back latency can't be negative number")
wbt_lat_config_path = os.path.join(get_sysfs_path(device.get_device_id()),
"queue/wbt_lat_usec")
return TestRun.executor.run_expect_success(
f"echo {value} > {wbt_lat_config_path}")