commit b8fb623dc940ec2aed46dbca96bb3fd7040987fa
Author: Jim Gauld <james.gauld@windriver.com>
Date:   Sun Oct 18 21:07:19 2020 -0400

    Enable 'rcu_nocb_poll' kernel config option
    
    This update adds 'rcu_nocb_poll' kernel config option to
    aio_and_worker kickstarts on low-latency systems.
    
    This relieves each CPU from the responsibility of awakening
    their RCU offload threads.
    
    Change-Id: I99d06d3018c01da27376f612b3afc4a14e85d25e
    Partial-Bug: 1900342
    Signed-off-by: Jim Gauld <james.gauld@windriver.com>

diff --git a/bsp-files/kickstarts/post_kernel_aio_and_worker.cfg b/bsp-files/kickstarts/post_kernel_aio_and_worker.cfg
index 5d90d31..5c2d524 100644
--- a/bsp-files/kickstarts/post_kernel_aio_and_worker.cfg
+++ b/bsp-files/kickstarts/post_kernel_aio_and_worker.cfg
@@ -49,6 +49,12 @@ else
   KERN_OPTS="${KERN_OPTS} nmi_watchdog=panic,1 softlockup_panic=1"
 fi
 
+# Add kernel options to relieve each CPU from the responsibility of awakening
+# their RCU offload threads
+if [[ "$subfunction" =~ lowlatency ]]; then
+  KERN_OPTS="${KERN_OPTS} rcu_nocb_poll"
+fi
+
 # Add kernel option to panic on a softdog timeout
 KERN_OPTS="${KERN_OPTS} softdog.soft_panic=1"