OCPBUGS-25860: Disable managed interrupts for smartpqi

This driver does not obey the isolcpus=managed_irq hint and
is causing interference.

This kernel argument makes sure the interrupt affinity
can be managed by userspace services.

The alternative approach using /etc/modprobe.d/smartpqi.conf
with option smartpqi ... does not work, because the driver
is loaded early at the initrd stage and we would have to
rebuild the RHCOS initrd. That is much heavier than a simple
kernel arg.

assets/performanceprofile/tuned/openshift-node-performance

@@ -168,6 +168,18 @@ cmdline_pstate=+intel_pstate=active
 cmdline_pstate=+intel_pstate=disable
 {{end}}
 
+# In case a smartpqi device is present, make sure the interrupt affinity
+# can be managed by userspace services. This driver does not obey
+# the isolcpus=managed_irq hint and is causing interference.
+# See: https://issues.redhat.com/browse/OCPBUGS-25860
+<<<<<<< HEAD
+[bootloader_smartpqi]
+devices_udev_regex==DRIVER=smartpqi
+cmdline_smartpqi=+smartpqi.disable_managed_interrupts=1
+=======
+cmdline_smartpqi=+${f:regex_search_ternary:${f:exec:/usr/sbin/lsmod}:\bsmartpqi\b:smartpqi.disable_managed_interrupts=1:}
+>>>>>>> 6616ca50 (f tuned)
+
 [rtentsk]
 
 {{ if .HardwareTuning }}