From: Uladzislau Rezki (Sony) <urezki@gmail.com>
Date: Thu, 12 Dec 2024 18:02:04 +0000 (+0100)
Subject: rcu/kvfree: Initialize kvfree_rcu() separately
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=0f52b4db4f91320569311b97a1a14a18fb8ff256;p=users%2Fdwmw2%2Flinux.git

rcu/kvfree: Initialize kvfree_rcu() separately

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) <urezki@gmail.com>
Acked-by: Hyeonggon Yoo <hyeonggon.yoo@sk.com>
Tested-by: Hyeonggon Yoo <hyeonggon.yoo@sk.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
---

diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index 48e5c03df1dd8..acb0095b4dbe9 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 00fac1170294f..893cb77aef22e 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 ff98233d4aa59..e69b867de8ef4 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();