From: "Paul E. McKenney" <[email protected]>

This commit affines rcu_tasks_kthread() to the housekeeping CPUs
in CONFIG_NO_HZ_FULL builds.  This is just a default, so systems
administrators are free to put this kthread somewhere else if they wish.

Signed-off-by: Paul E. McKenney <[email protected]>
---
 kernel/rcu/update.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/kernel/rcu/update.c b/kernel/rcu/update.c
index 3ef8ba58694e..8a39e68ff8e0 100644
--- a/kernel/rcu/update.c
+++ b/kernel/rcu/update.c
@@ -531,7 +531,8 @@ static int __noreturn rcu_tasks_kthread(void *arg)
        struct rcu_head *next;
        LIST_HEAD(rcu_tasks_holdouts);
 
-       /* FIXME: Add housekeeping affinity. */
+       /* Run on housekeeping CPUs by default.  Sysadm can move if desired. */
+       housekeeping_affine(current);
 
        /*
         * Each pass through the following loop makes one check for
-- 
1.8.1.5

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