Introduce a separate initialization of kvfree_rcu() functionality.
For such purpose a kfree_rcu_batch_init() is renamed to a kvfree_rcu_init()
and it is invoked from the main.c right after rcu_init() is done.

Signed-off-by: Uladzislau Rezki (Sony) <ure...@gmail.com>
---
 include/linux/rcupdate.h | 1 +
 init/main.c              | 1 +
 kernel/rcu/tree.c        | 3 +--
 3 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index 48e5c03df1dd..acb0095b4dbe 100644
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -118,6 +118,7 @@ static inline void call_rcu_hurry(struct rcu_head *head, 
rcu_callback_t func)
 
 /* Internal to kernel */
 void rcu_init(void);
+void __init kvfree_rcu_init(void);
 extern int rcu_scheduler_active;
 void rcu_sched_clock_irq(int user);
 
diff --git a/init/main.c b/init/main.c
index 00fac1170294..893cb77aef22 100644
--- a/init/main.c
+++ b/init/main.c
@@ -992,6 +992,7 @@ void start_kernel(void)
        workqueue_init_early();
 
        rcu_init();
+       kvfree_rcu_init();
 
        /* Trace events are available after this */
        trace_init();
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index ff98233d4aa5..e69b867de8ef 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -5648,7 +5648,7 @@ static void __init rcu_dump_rcu_node_tree(void)
 
 struct workqueue_struct *rcu_gp_wq;
 
-static void __init kfree_rcu_batch_init(void)
+void __init kvfree_rcu_init(void)
 {
        int cpu;
        int i, j;
@@ -5703,7 +5703,6 @@ void __init rcu_init(void)
 
        rcu_early_boot_tests();
 
-       kfree_rcu_batch_init();
        rcu_bootup_announce();
        sanitize_kthread_prio();
        rcu_init_geometry();
-- 
2.39.5


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