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################################################################################
# BSD LICENSE
#
# Copyright(c) 2019-2023 Intel Corporation. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Intel Corporation nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
################################################################################
import os
import logging
import subprocess
import time
import psutil
from testlib.env import Env
## @cond
logging.basicConfig(level=logging.DEBUG)
## @endcond
class Test:
log = logging.getLogger('rdt-test')
membw = None
rdtset = None
pqos = None
def init(self, request):
self.membw = request.config.membw
self.rdtset = request.config.rdtset
self.pqos = request.config.pqos
if os.path.isdir("/sys/fs/resctrl/info"):
subprocess.call("umount /sys/fs/resctrl".split(),
stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
reset_opt = ""
if Env().exists('cat', 'l3'):
reset_opt += 'l3cdp-off,'
if Env().exists('cat', 'l2'):
reset_opt += 'l2cdp-off,'
subprocess.call(f"{self.pqos} --iface=msr -R {reset_opt}".split(),
stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
subprocess.call(f"{self.pqos} --iface=msr -r -t 0".split(),
stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
def fini(self):
subprocess.call("killall -9 memtester".split(),
stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
subprocess.call("killall -9 membw".split(),
stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
## Runs command and adds output to log
def run(self, command, quiet=False):
with subprocess.Popen(command.split(), stdout=subprocess.PIPE, stderr=subprocess.PIPE,
encoding="utf-8") as child:
(stdout, stderr) = child.communicate()
# repeat command on RMID exhaustion
if "Failed to create resctrl group /sys/fs/resctrl/COS" in stdout:
# wait for limbo list cleanup
time.sleep(1)
with subprocess.Popen(command.split(), stdout=subprocess.PIPE, stderr=subprocess.PIPE,
encoding="utf-8") as child:
(stdout, stderr) = child.communicate()
if not quiet:
self.log.debug(command)
if not quiet and stdout:
self.log.debug("===> stdout")
self.log.debug(stdout)
if not quiet and stderr:
self.log.debug("===> stderr")
self.log.debug(stderr)
return stdout, stderr, child.returncode
@staticmethod
def cmd(iface, app, params):
command = app
if iface == "OS":
command = command + " --iface=os"
elif iface == "MSR":
command = command + " --iface=msr"
command = command + " " + params
return command
def cmd_pqos(self, iface, params):
return self.cmd(iface, self.pqos, params)
def cmd_rdtset(self, iface, params):
return self.cmd(iface, self.rdtset, params)
## Runs pqos command
def run_pqos(self, iface, params):
command = self.cmd_pqos(iface, params)
return self.run(command)
## Runs rdtset command
def run_rdtset(self, iface, params):
command = self.cmd_rdtset(iface, params)
return self.run(command)
## Wait for line in the output
def stdout_wait(self, process, line):
while True:
stdout = process.stdout.readline()
assert stdout != '' or process.poll() is None
if line in stdout:
break
@staticmethod
def get_pid_children(pid):
if int(pid) < 0:
return []
try:
children = []
process = psutil.Process(int(pid))
for child in process.children(recursive=True):
children.append(child.pid)
return children
except Exception:
return []
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