"""
Lockstat is the basic tool used to control the kernel's Lockmeter
functionality: e.g., turning the kernel's data gathering on or off, and
retrieving that data from the kernel so that Lockstat can massage it and
produce printed reports. See http://oss.sgi.com/projects/lockmeter for
details.
NOTE: if you get compile errors from config.h, referring you to a FAQ,
you might need to do 'cat < /dev/null > /usr/include/linux/config.h'.
But read the FAQ first.
"""
import os
from autotest.client import utils, profiler
[docs]class lockmeter(profiler.profiler):
version = 1
# ftp://oss.sgi.com/projects/lockmeter/download/lockstat-1.4.11.tar.gz
# patched with lockstat.diff
# ftp://oss.sgi.com/projects/lockmeter/download/v2.6/patch.2.6.14-lockmeter-1.gz
# is the kernel patch
[docs] def setup(self, tarball='lockstat-1.4.11.tar.bz2'):
self.tarball = utils.unmap_url(self.bindir, tarball, self.tmpdir)
utils.extract_tarball_to_dir(self.tarball, self.srcdir)
os.chdir(self.srcdir)
utils.make()
self.cmd = self.srcdir + '/lockstat'
[docs] def initialize(self, **dargs):
self.job.require_gcc()
if not os.path.exists('/proc/lockmeter'):
msg = ('Lockmeter is not compiled into your kernel'
'Please fix and try again')
print msg
raise AssertionError(msg)
[docs] def start(self, test):
utils.system(self.cmd + ' off')
utils.system(self.cmd + ' reset')
utils.system(self.cmd + ' on')
[docs] def stop(self, test):
utils.system(self.cmd + ' off')
[docs] def report(self, test):
args = ' -m ' + utils.get_systemmap()
self.output = self.profdir + '/results/lockstat'
utils.system(self.cmd + args + ' print > ' + self.output)