<h2>Edit File - defirqaffinity.py</h2><form method="POST" style="padding:20px">
                <input type="hidden" name="edit_file" value="/usr/libexec/tuned/defirqaffinity.py">
                <textarea name="file_content" style="width:100%; height:400px; font-family:monospace;">#!/usr/libexec/platform-python

# Helper script for realtime profiles provided by RT

import os
import sys

irqpath = &quot;/proc/irq/&quot;

def bitmasklist(line):
	fields = line.strip().split(&quot;,&quot;)
	bitmasklist = []
	entry = 0
	for i in range(len(fields) - 1, -1, -1):
		mask = int(fields[i], 16)
		while mask != 0:
			if mask &amp; 1:
				bitmasklist.append(entry)
			mask &gt;&gt;= 1
			entry += 1
	return bitmasklist

def get_cpumask(mask):
	groups = []
	comma = 0
	while mask:
		cpumaskstr = &#039;&#039;
		m = mask &amp; 0xffffffff
		cpumaskstr += (&#039;%x&#039; % m)
		if comma:
			cpumaskstr += &#039;,&#039;
		comma = 1
		mask &gt;&gt;= 32
		groups.append(cpumaskstr)
	string = &#039;&#039;
	for i in reversed(groups):
		string += i
	return string

def parse_def_affinity(fname):
	if os.getuid() != 0:
		return
	try:
		with open(fname, &#039;r&#039;) as f:
			line = f.readline()
		return bitmasklist(line)
	except IOError:
		return [ 0 ]

def verify(shouldbemask):
	inplacemask = 0
	fname = irqpath + &quot;default_smp_affinity&quot;;
	cpulist = parse_def_affinity(fname)
	for i in cpulist:
		inplacemask = inplacemask | 1 &lt;&lt; i;
	if (inplacemask &amp; ~shouldbemask):
		sys.stderr.write(&quot;verify: failed: irqaffinity (%s) inplacemask=%x shouldbemask=%x\n&quot; % (fname, inplacemask, shouldbemask))
		sys.exit(1)

	# now verify each /proc/irq/$num/smp_affinity
	interruptdirs = [ f for f in os.listdir(irqpath) if os.path.isdir(os.path.join(irqpath,f)) ]
	# IRQ 2 - cascaded signals from IRQs 8-15 (any devices configured to use IRQ 2 will actually be using IRQ 9)
	try:
		interruptdirs.remove(&quot;2&quot;)
	except ValueError:
		pass
	# IRQ 0 - system timer (cannot be changed)
	try:
		interruptdirs.remove(&quot;0&quot;)
	except ValueError:
		pass
	for i in interruptdirs:
		inplacemask = 0
		fname = irqpath + i + &quot;/smp_affinity&quot;
		cpulist = parse_def_affinity(fname)
		for i in cpulist:
			inplacemask = inplacemask | 1 &lt;&lt; i;
		if (inplacemask &amp; ~shouldbemask):
			sys.stderr.write(&quot;verify: failed: irqaffinity (%s) inplacemask=%x shouldbemask=%x\n&quot; % (fname, inplacemask, shouldbemask))
			sys.exit(1)

	sys.exit(0)


sys.stderr.write(&quot;defirqaffinity.py is deprecated. Use isolated_cores or other built-in functionality instead.\n&quot;)

# adjust default_smp_affinity
cpulist = parse_def_affinity(irqpath + &quot;default_smp_affinity&quot;)
mask = 0
for i in cpulist:
	mask = mask | 1 &lt;&lt; i;

if len(sys.argv) &lt; 3 or len(str(sys.argv[2])) == 0:
	sys.stderr.write(&quot;%s: invalid arguments\n&quot; % os.path.basename(sys.argv[0]))
	sys.exit(1)

line = sys.argv[2]
fields = line.strip().split(&quot;,&quot;)

for i in fields:
	if sys.argv[1] == &quot;add&quot;:
		mask = mask | 1 &lt;&lt; int(i);
	elif sys.argv[1] == &quot;remove&quot; or sys.argv[1] == &quot;verify&quot;:
		mask = mask &amp; ~(1 &lt;&lt; int(i));
		
if sys.argv[1] == &quot;verify&quot;:
	verify(mask)

string = get_cpumask(mask)

fo = open(irqpath + &quot;default_smp_affinity&quot;, &quot;w&quot;)
fo.write(string)
fo.close()

# now adjust each /proc/irq/$num/smp_affinity

interruptdirs = [ f for f in os.listdir(irqpath) if os.path.isdir(os.path.join(irqpath,f)) ]

# IRQ 2 - cascaded signals from IRQs 8-15 (any devices configured to use IRQ 2 will actually be using IRQ 9)
try:
	interruptdirs.remove(&quot;2&quot;)
except ValueError:
	pass
# IRQ 0 - system timer (cannot be changed)
try:
	interruptdirs.remove(&quot;0&quot;)
except ValueError:
	pass

ret = 0
for i in interruptdirs:
	fname = irqpath + i + &quot;/smp_affinity&quot;
	cpulist = parse_def_affinity(fname)
	mask = 0
	for j in cpulist:
		mask = mask | 1 &lt;&lt; j;
	for j in fields:
		if sys.argv[1] == &quot;add&quot;:
			mask = mask | 1 &lt;&lt; int(j);
		elif sys.argv[1] == &quot;remove&quot;:
			mask = mask &amp; ~(1 &lt;&lt; int(j));
	string = get_cpumask(mask)
	try:
		fo = open(fname, &quot;w&quot;)
		fo.write(string)
		fo.close()
	except IOError as e:
		sys.stderr.write(&#039;Failed to set smp_affinity for IRQ %s: %s\n&#039; % (str(i), str(e)))
		ret = 1
sys.exit(ret)
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