1 files changed, 8 insertions, 0 deletions

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 166144c04ef6..92744e3f1556 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -555,6 +555,14 @@ struct task_struct {
         unsigned long                   wakee_flip_decay_ts;
         struct task_struct              *last_wakee;
 
+        /*
+         * recent_used_cpu is initially set as the last CPU used by a task
+         * that wakes affine another task. Waker/wakee relationships can
+         * push tasks around a CPU where each wakeup moves to the next one.
+         * Tracking a recently used CPU allows a quick search for a recently
+         * used CPU that may be idle.
+         */
+        int                             recent_used_cpu;
         int                             wake_cpu;
 #endif
         int                             on_rq;