2 files changed, 9 insertions, 0 deletions

diff --git a/init/Kconfig b/init/Kconfig
index 3c1faaa2af4a..c1fd2863d4ba 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -472,6 +472,13 @@ config TASK_IO_ACCOUNTING
 
 endmenu # "CPU/Task time and stats accounting"
 
+config CPU_ISOLATION
+        bool "CPU isolation"
+        help
+          Make sure that CPUs running critical tasks are not disturbed by
+          any source of "noise" such as unbound workqueues, timers, kthreads...
+          Unbound jobs get offloaded to housekeeping CPUs.
+
 source "kernel/rcu/Kconfig"
 
 config BUILD_BIN2C
diff --git a/init/main.c b/init/main.c
index 0ee9c6866ada..4610c99ae306 100644
--- a/init/main.c
+++ b/init/main.c
@@ -46,6 +46,7 @@
 #include <linux/cgroup.h>
 #include <linux/efi.h>
 #include <linux/tick.h>
+#include <linux/sched/isolation.h>
 #include <linux/interrupt.h>
 #include <linux/taskstats_kern.h>
 #include <linux/delayacct.h>
@@ -606,6 +607,7 @@ asmlinkage __visible void __init start_kernel(void)
         early_irq_init();
         init_IRQ();
         tick_init();
+        housekeeping_init();
         rcu_init_nohz();
         init_timers();
         hrtimers_init();