Commit 1e0416fb authored by Jaroslav Škarvada's avatar Jaroslav Škarvada

utils: added pmqos-static script for debug purposes

resolves: rhbz#1015676
Signed-off-by: default avatarJaroslav Škarvada <jskarvad@redhat.com>
parent f8d89a78
......@@ -15,7 +15,7 @@ archive: clean
cp tuned.py tuned.spec tuned.service tuned.tmpfiles Makefile tuned-adm.py \
tuned.bash dbus.conf recommend.conf tuned-main.conf $(VERSIONED_NAME)
cp -a doc experiments man profiles systemtap tuned $(VERSIONED_NAME)
cp -a doc experiments libexec man profiles systemtap tuned $(VERSIONED_NAME)
tar cjf $(VERSIONED_NAME).tar.bz2 $(VERSIONED_NAME)
......@@ -94,6 +94,12 @@ install:
cp -a doc/* $(DESTDIR)/usr/share/doc/$(VERSIONED_NAME)
cp AUTHORS COPYING README $(DESTDIR)/usr/share/doc/$(VERSIONED_NAME)
# Install libexec scripts
install -m 0755 -Dd $(DESTDIR)/usr/libexec/tuned
for file in libexec/*; do \
install -m 0755 $$file $(DESTDIR)/usr/libexec/tuned; \
done
clean:
find -name "*.pyc" | xargs rm -f
rm -rf $(VERSIONED_NAME) rpm-build-dir
......
#!/usr/bin/python
#
# pmqos-static.py: Simple daemon for setting static PM QoS values. It is a part
# of 'tuned' and it should not be called manually.
#
# Copyright (C) 2011 Red Hat, Inc.
# Authors: Jan Vcelak <jvcelak@redhat.com>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
import os
import signal
import struct
import sys
import time
# Used interface is described in Linux kernel documentation:
# Documentation/power/pm_qos_interface.txt
ALLOWED_INTERFACES = [ "cpu_dma_latency", "network_latency", "network_throughput" ]
PIDFILE = "/var/run/tuned/pmqos-static.pid"
def do_fork():
pid = os.fork()
if pid > 0:
sys.exit(0)
def close_fds():
s_in = file('/dev/null', 'r')
s_out = file('/dev/null', 'a+')
s_err = file('/dev/null', 'a+', 0)
os.dup2(s_in.fileno(), sys.stdin.fileno())
os.dup2(s_out.fileno(), sys.stdout.fileno())
os.dup2(s_err.fileno(), sys.stderr.fileno())
def write_pidfile():
f = os.open(PIDFILE, os.O_CREAT | os.O_TRUNC | os.O_WRONLY, 0644)
os.write(f, "%d" % os.getpid())
os.close(f)
def daemonize():
do_fork()
os.chdir("/")
os.setsid()
os.umask(0)
do_fork()
close_fds()
def set_pmqos(name, value):
filename = "/dev/%s" % name
bin_value = struct.pack("i", int(value))
fd = os.open(filename, os.O_WRONLY)
os.write(fd, bin_value)
return fd
def sleep_forever():
while True:
time.sleep(86400)
def sigterm_handler(signum, frame):
global pmqos_fds
if type(pmqos_fds) is list:
for fd in pmqos_fds:
os.close(fd)
sys.exit(0)
def run_daemon(options):
try:
daemonize()
write_pidfile()
signal.signal(signal.SIGTERM, sigterm_handler)
except Exception, e:
print >>sys.stderr, "Cannot daemonize (%s)." % e
return False
global pmqos_fds
pmqos_fds = []
for (name, value) in options.items():
try:
new_fd = set_pmqos(name, value)
pmqos_fds.append(new_fd)
except:
# we are daemonized
pass
if len(pmqos_fds) > 0:
sleep_forever()
else:
return False
def kill_daemon(force = False):
try:
with open(PIDFILE, "r") as pidfile:
daemon_pid = int(pidfile.read())
except IOError, e:
if not force: print >>sys.stderr, "Cannot open PID file (%s)." % e
return False
try:
os.kill(daemon_pid, signal.SIGTERM)
except OSError, e:
if not force: print >>sys.stderr, "Cannot terminate the daemon (%s)." % e
return False
try:
os.unlink(PIDFILE)
except OSError, e:
if not force: print >>sys.stderr, "Cannot delete the PID file (%s)." % e
return False
return True
if __name__ == "__main__":
disable = False
options = {}
for option in sys.argv[1:]:
if option == "disable":
disable = True
break
try:
(name, value) = option.split("=")
except ValueError:
name = option
value = None
if name in ALLOWED_INTERFACES and len(value) > 0:
options[name] = value
else:
print >>sys.stderr, "Invalid option (%s)." % option
if disable:
sys.exit(0 if kill_daemon() else 1)
if len(options) == 0:
print >>sys.stderr, "No options set. Not starting."
sys.exit(1)
kill_daemon(True)
run_daemon(options)
sys.exit(1)
......@@ -26,8 +26,8 @@ Summary: Various tuned utilities
Requires: powertop
%description utils
This package contains utilities that can help you to fine tune your
system and manage tuned profiles.
This package contains utilities that can help you to fine tune and
debug your system and manage tuned profiles.
%package utils-systemtap
Summary: Disk and net statistic monitoring systemtap scripts
......@@ -124,6 +124,7 @@ sed -i 's|.*/\([^/]\+\)/[^\.]\+\.conf|\1|' /etc/tuned/active_profile
%defattr(-,root,root,-)
%doc COPYING
%{_bindir}/powertop2tuned
%{_libexecdir}/tuned/
%files utils-systemtap
%defattr(-,root,root,-)
......
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