profiles: Replace calls to defirqaffinity.py

In the cpu-partitioning profile, IRQ affinity change is already done
as part of the 'isolated_cores' option of the scheduler plugin, so
calling defirqaffinity is, at best, redundant. So let's remove the call.

In the realtime* profiles, it's essentially the same, except that tuna
was used instead of isolated_cores. So let's use built-in functionality
instead of tuna and drop calls to defirqaffinity.

Resolves: rhbz#1590937

Signed-off-by: Ondřej Lysoněk <olysonek@redhat.com>

profiles/cpu-partitioning/script.sh

@@ -39,7 +39,6 @@ start() {
     mkdir -p "${TUNED_tmpdir}/usr/lib/dracut/hooks/pre-udev"
     cp /etc/systemd/system.conf "${TUNED_tmpdir}/etc/systemd/"
     cp 00-tuned-pre-udev.sh "${TUNED_tmpdir}/usr/lib/dracut/hooks/pre-udev/"
-    python /usr/libexec/tuned/defirqaffinity.py "remove" "$TUNED_isolated_cores_expanded"
     sed -i '/^IRQBALANCE_BANNED_CPUS=/d' /etc/sysconfig/irqbalance
     echo "IRQBALANCE_BANNED_CPUS=$TUNED_isolated_cpumask" >>/etc/sysconfig/irqbalance
     setup_kvm_mod_low_latency
@@ -51,7 +50,6 @@ start() {
 }
 
 stop() {
-    python /usr/libexec/tuned/defirqaffinity.py "add" "$TUNED_isolated_cores_expanded"
     if [ "$1" = "full_rollback" ]
     then
         sed -i '/^IRQBALANCE_BANNED_CPUS=/d' /etc/sysconfig/irqbalance
@@ -62,9 +60,4 @@ stop() {
     return "$?"
 }
 
-verify() {
-    python /usr/libexec/tuned/defirqaffinity.py "verify" "$TUNED_isolated_cores_expanded"
-    return "$?"
-}
-
 process $@

profiles/realtime-virtual-guest/script.sh

@@ -1,20 +0,0 @@
-#!/bin/sh
-
-. /usr/lib/tuned/functions
-
-start() {
-    python /usr/libexec/tuned/defirqaffinity.py "remove" "$TUNED_isolated_cores_expanded" &&
-    return "$?"
-}
-
-stop() {
-    python /usr/libexec/tuned/defirqaffinity.py "add" "$TUNED_isolated_cores_expanded"
-    return "$?"
-}
-
-verify() {
-    python /usr/libexec/tuned/defirqaffinity.py "verify" "$TUNED_isolated_cores_expanded"
-    return "$?"
-}
-
-process $@

profiles/realtime-virtual-guest/tuned.conf

@@ -34,8 +34,7 @@ group.rcub=0:f:4:*:rcub.*
 # for i in `pgrep ktimersoftd` ; do grep Cpus_allowed_list /proc/$i/status ; done
 group.ktimersoftd=0:f:3:*:ktimersoftd.*
 
-[script]
-script=${i:PROFILE_DIR}/script.sh
+ps_blacklist=ksoftirqd.*;rcuc.*;rcub.*;ktimersoftd.*
 
 [bootloader]
 cmdline_rvg=+nohz=on nohz_full=${isolated_cores} rcu_nocbs=${isolated_cores}

profiles/realtime-virtual-host/script.sh

@@ -44,10 +44,6 @@ run_tsc_deadline_latency()
 }
 
 start() {
-    if ! /usr/libexec/tuned/defirqaffinity.py "remove" "$TUNED_isolated_cores_expanded"; then
-	die defirqaffinity.py remove failed
-    fi
-
     setup_kvm_mod_low_latency
 
     disable_ksm
@@ -97,15 +93,12 @@ start() {
 
 stop() {
     [ "$1" = "full_rollback" ] && teardown_kvm_mod_low_latency
-    python /usr/libexec/tuned/defirqaffinity.py "add" "$TUNED_isolated_cores_expanded"
     enable_ksm
     return "$?"
 }
 
 verify() {
-    python /usr/libexec/tuned/defirqaffinity.py "verify" "$TUNED_isolated_cores_expanded"
-    retval=$?
-    if [ $retval -eq 0 -a -f /sys/module/kvm/parameters/kvmclock_periodic_sync ]; then
+    if [ -f /sys/module/kvm/parameters/kvmclock_periodic_sync ]; then
         test "$(cat /sys/module/kvm/parameters/kvmclock_periodic_sync)" = 0
         retval=$?
     fi

profiles/realtime-virtual-host/tuned.conf

@@ -39,6 +39,8 @@ group.rcub=0:f:4:*:rcub.*
 # for i in `pgrep ktimersoftd` ; do grep Cpus_allowed_list /proc/$i/status ; done
 group.ktimersoftd=0:f:3:*:ktimersoftd.*
 
+ps_blacklist=ksoftirqd.*;rcuc.*;rcub.*;ktimersoftd.*
+
 [script]
 script=${i:PROFILE_DIR}/script.sh
 

profiles/realtime/script.sh

@@ -3,15 +3,7 @@
 . /usr/lib/tuned/functions
 
 start() {
-    if [ -z "$TUNED_isolated_cores" ]; then
-      echo "no isolated cores set, realtime profile not correctly activated" >&2
-      exit 1
-    fi
-
-    # move threads off the selected cpu cores
-    tuna -c "$TUNED_isolated_cores" -i
-
-    return "$?"
+    return 0
 }
 
 stop() {

profiles/realtime/tuned.conf

@@ -40,3 +40,6 @@ cmdline_realtime=+isolcpus=${isolated_cores} intel_pstate=disable nosoftlockup
 
 [script]
 script = ${i:PROFILE_DIR}/script.sh
+
+[scheduler]
+isolated_cores=${isolated_cores}