477 lines
15 KiB
Python
477 lines
15 KiB
Python
# SPDX-License-Identifier: GPL-2.0
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from __future__ import print_function
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import os
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import sys
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import glob
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import optparse
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import platform
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import tempfile
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import logging
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import re
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import shutil
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import subprocess
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try:
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import configparser
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except ImportError:
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import ConfigParser as configparser
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def data_equal(a, b):
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# Allow multiple values in assignment separated by '|'
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a_list = a.split('|')
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b_list = b.split('|')
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for a_item in a_list:
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for b_item in b_list:
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if (a_item == b_item):
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return True
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elif (a_item == '*') or (b_item == '*'):
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return True
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return False
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class Fail(Exception):
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def __init__(self, test, msg):
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self.msg = msg
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self.test = test
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def getMsg(self):
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return '\'%s\' - %s' % (self.test.path, self.msg)
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class Notest(Exception):
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def __init__(self, test, arch):
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self.arch = arch
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self.test = test
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def getMsg(self):
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return '[%s] \'%s\'' % (self.arch, self.test.path)
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class Unsup(Exception):
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def __init__(self, test):
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self.test = test
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def getMsg(self):
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return '\'%s\'' % self.test.path
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class Event(dict):
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terms = [
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'cpu',
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'flags',
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'type',
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'size',
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'config',
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'sample_period',
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'sample_type',
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'read_format',
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'disabled',
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'inherit',
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'pinned',
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'exclusive',
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'exclude_user',
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'exclude_kernel',
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'exclude_hv',
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'exclude_idle',
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'mmap',
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'comm',
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'freq',
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'inherit_stat',
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'enable_on_exec',
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'task',
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'watermark',
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'precise_ip',
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'mmap_data',
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'sample_id_all',
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'exclude_host',
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'exclude_guest',
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'exclude_callchain_kernel',
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'exclude_callchain_user',
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'wakeup_events',
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'bp_type',
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'config1',
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'config2',
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'branch_sample_type',
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'sample_regs_user',
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'sample_stack_user',
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]
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def add(self, data):
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for key, val in data:
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log.debug(" %s = %s" % (key, val))
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self[key] = val
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def __init__(self, name, data, base):
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log.debug(" Event %s" % name);
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self.name = name;
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self.group = ''
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self.add(base)
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self.add(data)
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def equal(self, other):
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for t in Event.terms:
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log.debug(" [%s] %s %s" % (t, self[t], other[t]));
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if t not in self or t not in other:
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return False
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if not data_equal(self[t], other[t]):
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return False
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return True
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def optional(self):
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if 'optional' in self and self['optional'] == '1':
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return True
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return False
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def diff(self, other):
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for t in Event.terms:
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if t not in self or t not in other:
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continue
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if not data_equal(self[t], other[t]):
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log.warning("expected %s=%s, got %s" % (t, self[t], other[t]))
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def parse_version(version):
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if not version:
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return None
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return [int(v) for v in version.split(".")[0:2]]
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# Test file description needs to have following sections:
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# [config]
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# - just single instance in file
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# - needs to specify:
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# 'command' - perf command name
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# 'args' - special command arguments
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# 'ret' - Skip test if Perf doesn't exit with this value (0 by default)
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# 'test_ret'- If set to 'true', fail test instead of skipping for 'ret' argument
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# 'arch' - architecture specific test (optional)
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# comma separated list, ! at the beginning
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# negates it.
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# 'auxv' - Truthy statement that is evaled in the scope of the auxv map. When false,
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# the test is skipped. For example 'auxv["AT_HWCAP"] == 10'. (optional)
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# 'kernel_since' - Inclusive kernel version from which the test will start running. Only the
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# first two values are supported, for example "6.1" (optional)
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# 'kernel_until' - Exclusive kernel version from which the test will stop running. (optional)
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# [eventX:base]
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# - one or multiple instances in file
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# - expected values assignments
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class Test(object):
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def __init__(self, path, options):
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parser = configparser.ConfigParser()
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parser.read(path)
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log.warning("running '%s'" % path)
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self.path = path
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self.test_dir = options.test_dir
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self.perf = options.perf
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self.command = parser.get('config', 'command')
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self.args = parser.get('config', 'args')
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try:
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self.ret = parser.get('config', 'ret')
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except:
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self.ret = 0
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self.test_ret = parser.getboolean('config', 'test_ret', fallback=False)
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try:
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self.arch = parser.get('config', 'arch')
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log.warning("test limitation '%s'" % self.arch)
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except:
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self.arch = ''
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self.auxv = parser.get('config', 'auxv', fallback=None)
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self.kernel_since = parse_version(parser.get('config', 'kernel_since', fallback=None))
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self.kernel_until = parse_version(parser.get('config', 'kernel_until', fallback=None))
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self.expect = {}
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self.result = {}
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log.debug(" loading expected events");
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self.load_events(path, self.expect)
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def is_event(self, name):
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if name.find("event") == -1:
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return False
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else:
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return True
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def skip_test_kernel_since(self):
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if not self.kernel_since:
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return False
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return not self.kernel_since <= parse_version(platform.release())
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def skip_test_kernel_until(self):
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if not self.kernel_until:
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return False
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return not parse_version(platform.release()) < self.kernel_until
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def skip_test_auxv(self):
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def new_auxv(a, pattern):
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items = list(filter(None, pattern.split(a)))
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# AT_HWCAP is hex but doesn't have a prefix, so special case it
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if items[0] == "AT_HWCAP":
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value = int(items[-1], 16)
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else:
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try:
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value = int(items[-1], 0)
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except:
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value = items[-1]
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return (items[0], value)
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if not self.auxv:
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return False
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auxv = subprocess.check_output("LD_SHOW_AUXV=1 sleep 0", shell=True) \
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.decode(sys.stdout.encoding)
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pattern = re.compile(r"[: ]+")
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auxv = dict([new_auxv(a, pattern) for a in auxv.splitlines()])
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return not eval(self.auxv)
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def skip_test_arch(self, myarch):
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# If architecture not set always run test
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if self.arch == '':
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# log.warning("test for arch %s is ok" % myarch)
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return False
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# Allow multiple values in assignment separated by ','
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arch_list = self.arch.split(',')
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# Handle negated list such as !s390x,ppc
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if arch_list[0][0] == '!':
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arch_list[0] = arch_list[0][1:]
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log.warning("excluded architecture list %s" % arch_list)
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for arch_item in arch_list:
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# log.warning("test for %s arch is %s" % (arch_item, myarch))
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if arch_item == myarch:
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return True
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return False
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for arch_item in arch_list:
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# log.warning("test for architecture '%s' current '%s'" % (arch_item, myarch))
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if arch_item == myarch:
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return False
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return True
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def restore_sample_rate(self, value=10000):
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try:
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# Check value of sample_rate
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with open("/proc/sys/kernel/perf_event_max_sample_rate", "r") as fIn:
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curr_value = fIn.readline()
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# If too low restore to reasonable value
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if not curr_value or int(curr_value) < int(value):
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with open("/proc/sys/kernel/perf_event_max_sample_rate", "w") as fOut:
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fOut.write(str(value))
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except IOError as e:
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log.warning("couldn't restore sample_rate value: I/O error %s" % e)
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except ValueError as e:
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log.warning("couldn't restore sample_rate value: Value error %s" % e)
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except TypeError as e:
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log.warning("couldn't restore sample_rate value: Type error %s" % e)
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def load_events(self, path, events):
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parser_event = configparser.ConfigParser()
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parser_event.read(path)
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# The event record section header contains 'event' word,
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# optionaly followed by ':' allowing to load 'parent
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# event' first as a base
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for section in filter(self.is_event, parser_event.sections()):
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parser_items = parser_event.items(section);
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base_items = {}
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# Read parent event if there's any
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if (':' in section):
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base = section[section.index(':') + 1:]
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parser_base = configparser.ConfigParser()
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parser_base.read(self.test_dir + '/' + base)
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base_items = parser_base.items('event')
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e = Event(section, parser_items, base_items)
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events[section] = e
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def run_cmd(self, tempdir):
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junk1, junk2, junk3, junk4, myarch = (os.uname())
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if self.skip_test_arch(myarch):
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raise Notest(self, myarch)
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if self.skip_test_auxv():
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raise Notest(self, "auxv skip")
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if self.skip_test_kernel_since():
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raise Notest(self, "old kernel skip")
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if self.skip_test_kernel_until():
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raise Notest(self, "new kernel skip")
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self.restore_sample_rate()
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cmd = "PERF_TEST_ATTR=%s %s %s -o %s/perf.data %s" % (tempdir,
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self.perf, self.command, tempdir, self.args)
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ret = os.WEXITSTATUS(os.system(cmd))
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log.info(" '%s' ret '%s', expected '%s'" % (cmd, str(ret), str(self.ret)))
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if not data_equal(str(ret), str(self.ret)):
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if self.test_ret:
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raise Fail(self, "Perf exit code failure")
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else:
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raise Unsup(self)
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def compare(self, expect, result):
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match = {}
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log.debug(" compare");
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# For each expected event find all matching
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# events in result. Fail if there's not any.
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for exp_name, exp_event in expect.items():
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exp_list = []
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res_event = {}
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log.debug(" matching [%s]" % exp_name)
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for res_name, res_event in result.items():
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log.debug(" to [%s]" % res_name)
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if (exp_event.equal(res_event)):
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exp_list.append(res_name)
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log.debug(" ->OK")
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else:
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log.debug(" ->FAIL");
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log.debug(" match: [%s] matches %s" % (exp_name, str(exp_list)))
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# we did not any matching event - fail
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if not exp_list:
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if exp_event.optional():
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log.debug(" %s does not match, but is optional" % exp_name)
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else:
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if not res_event:
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log.debug(" res_event is empty");
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else:
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exp_event.diff(res_event)
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raise Fail(self, 'match failure');
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match[exp_name] = exp_list
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# For each defined group in the expected events
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# check we match the same group in the result.
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for exp_name, exp_event in expect.items():
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group = exp_event.group
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if (group == ''):
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continue
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for res_name in match[exp_name]:
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res_group = result[res_name].group
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if res_group not in match[group]:
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raise Fail(self, 'group failure')
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log.debug(" group: [%s] matches group leader %s" %
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(exp_name, str(match[group])))
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log.debug(" matched")
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def resolve_groups(self, events):
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for name, event in events.items():
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group_fd = event['group_fd'];
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if group_fd == '-1':
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continue;
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for iname, ievent in events.items():
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if (ievent['fd'] == group_fd):
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event.group = iname
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log.debug('[%s] has group leader [%s]' % (name, iname))
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break;
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def run(self):
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tempdir = tempfile.mkdtemp();
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try:
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# run the test script
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self.run_cmd(tempdir);
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# load events expectation for the test
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log.debug(" loading result events");
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for f in glob.glob(tempdir + '/event*'):
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self.load_events(f, self.result);
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# resolve group_fd to event names
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self.resolve_groups(self.expect);
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self.resolve_groups(self.result);
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# do the expectation - results matching - both ways
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self.compare(self.expect, self.result)
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self.compare(self.result, self.expect)
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finally:
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# cleanup
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shutil.rmtree(tempdir)
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def run_tests(options):
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for f in glob.glob(options.test_dir + '/' + options.test):
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try:
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Test(f, options).run()
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except Unsup as obj:
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log.warning("unsupp %s" % obj.getMsg())
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except Notest as obj:
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log.warning("skipped %s" % obj.getMsg())
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def setup_log(verbose):
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global log
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level = logging.CRITICAL
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if verbose == 1:
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level = logging.WARNING
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if verbose == 2:
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level = logging.INFO
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if verbose >= 3:
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level = logging.DEBUG
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log = logging.getLogger('test')
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log.setLevel(level)
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ch = logging.StreamHandler()
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ch.setLevel(level)
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formatter = logging.Formatter('%(message)s')
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ch.setFormatter(formatter)
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log.addHandler(ch)
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USAGE = '''%s [OPTIONS]
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-d dir # tests dir
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-p path # perf binary
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-t test # single test
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-v # verbose level
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''' % sys.argv[0]
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def main():
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parser = optparse.OptionParser(usage=USAGE)
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parser.add_option("-t", "--test",
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action="store", type="string", dest="test")
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parser.add_option("-d", "--test-dir",
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action="store", type="string", dest="test_dir")
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parser.add_option("-p", "--perf",
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action="store", type="string", dest="perf")
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parser.add_option("-v", "--verbose",
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default=0, action="count", dest="verbose")
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options, args = parser.parse_args()
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if args:
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parser.error('FAILED wrong arguments %s' % ' '.join(args))
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return -1
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setup_log(options.verbose)
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if not options.test_dir:
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print('FAILED no -d option specified')
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sys.exit(-1)
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if not options.test:
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options.test = 'test*'
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try:
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run_tests(options)
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except Fail as obj:
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print("FAILED %s" % obj.getMsg())
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sys.exit(-1)
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sys.exit(0)
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if __name__ == '__main__':
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main()
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