When Performance profile is modified from realTime true to realTime false , the change in workloadhints doesnt stop stalld. 

4.13.0-0.nightly-2023-03-14-053612

everytime

1. Setup multinode BM cluster with 2 workers
2. Create a mcp pool worker-cnf
3. Create a profile as show below:

spec:
  cpu:
    balanceIsolated: false
    isolated: 2-39,42-79
    reserved: 0-1,40-41
  machineConfigPoolSelector:
    machineconfiguration.openshift.io/role: worker-cnf
  nodeSelector:
    node-role.kubernetes.io/worker-cnf: ""
  numa:
    topologyPolicy: single-numa-node
  realTimeKernel:
    enabled: true
  workloadHints:
    realTime: true   

spec:
  cpu:
    balanceIsolated: false
    isolated: 2-39,42-79
    reserved: 0-1,40-41
  machineConfigPoolSelector:
    machineconfiguration.openshift.io/role: worker-cnf
  nodeSelector:
    node-role.kubernetes.io/worker-cnf: ""
  numa:
    topologyPolicy: single-numa-node
  realTimeKernel:
    enabled: false
  workloadHints:
    realTime: false   

[root@registry kni]# oc get nodes
NAME       STATUS   ROLES                  AGE    VERSION
master-0   Ready    control-plane,master   5d6h   v1.26.2+bc894ae
master-1   Ready    control-plane,master   5d6h   v1.26.2+bc894ae
master-2   Ready    control-plane,master   5d6h   v1.26.2+bc894ae
worker-0   Ready    worker,worker-cnf      5d5h   v1.26.2+bc894ae
worker-1   Ready    worker                 5d5h   v1.26.2+bc894ae

[root@registry kni]# oc debug node/worker-0
Temporary namespace openshift-debug-k9knn is created for debugging node...
Starting pod/worker-0-debug ...
To use host binaries, run `chroot /host`
Pod IP: 10.46.80.2
If you don't see a command prompt, try pressing enter.
sh-4.4# chroot /host
sh-5.1# systemctl status stalld
● stalld.service - Stall Monitor
     Loaded: loaded (/usr/lib/systemd/system/stalld.service; enabled; preset: disabled)
     Active: active (running) since Tue 2023-03-21 16:36:13 UTC; 12min ago
   Main PID: 1785 (stalld)
      Tasks: 1 (limit: 3299464)
     Memory: 720.0K
        CPU: 66ms
     CGroup: /system.slice/stalld.service
             └─1785 /usr/bin/stalld --systemd -p 1000000000 -r 20000 -d 3 -t 20 --foreground --pidfile /run/stalld.pidMar 21 16:36:13 localhost stalld[1785]: lockdown mode is off
Mar 21 16:36:13 localhost stalld[1785]: /sys/kernel/debug/sched/features exists
Mar 21 16:36:13 localhost stalld[1785]: dl_runtime is shorter than 1ms, setting HRTICK_DL
Mar 21 16:36:13 localhost stalld[1785]: /sys/kernel/debug/sched/debug exists
Mar 21 16:36:13 localhost stalld[1785]: boosted pid 0 (undef) using SCHED_DEADLINE
Mar 21 16:36:13 localhost systemd[1]: Started Stall Monitor.
Mar 21 16:36:13 localhost stalld[1785]: using SCHED_DEADLINE for boosting
Mar 21 16:36:13 localhost stalld[1785]: initial config_buffer_size set to 614400
Mar 21 16:36:13 localhost stalld[1785]: detected new task format
Mar 21 16:36:13 localhost stalld[1785]: single threaded mode
sh-5.1# ps -ef | grep stalld
root        1785       1  0 16:36 ?        00:00:00 /usr/bin/stalld --systemd -p 1000000000 -r 20000 -d 3 -t 20 --foreground --pidfile /run/stalld.pid
root       13676   13420  0 16:49 ?        00:00:00 grep stalld

stalld should be disabled