Use new APIs to dynamically allocate the rcu-kfree shrinker.
Signed-off-by: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>
Reviewed-by: Joel Fernandes (Google) <joel@xxxxxxxxxxxxxxxxx>
Reviewed-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
CC: rcu@xxxxxxxxxxxxxxx
---
kernel/rcu/tree.c | 22 +++++++++++++---------
1 file changed, 13 insertions(+), 9 deletions(-)
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index cb1caefa8bd0..6d2f82f79c65 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -3449,13 +3449,6 @@ kfree_rcu_shrink_scan(struct shrinker *shrink, struct shrink_control *sc)
return freed == 0 ? SHRINK_STOP : freed;
}
-static struct shrinker kfree_rcu_shrinker = {
- .count_objects = kfree_rcu_shrink_count,
- .scan_objects = kfree_rcu_shrink_scan,
- .batch = 0,
- .seeks = DEFAULT_SEEKS,
-};
-
void __init kfree_rcu_scheduler_running(void)
{
int cpu;
@@ -4931,6 +4924,7 @@ static void __init kfree_rcu_batch_init(void)
{
int cpu;
int i, j;
+ struct shrinker *kfree_rcu_shrinker;
/* Clamp it to [0:100] seconds interval. */
if (rcu_delay_page_cache_fill_msec < 0 ||
@@ -4962,8 +4956,18 @@ static void __init kfree_rcu_batch_init(void)
INIT_DELAYED_WORK(&krcp->page_cache_work, fill_page_cache_func);
krcp->initialized = true;
}
- if (register_shrinker(&kfree_rcu_shrinker, "rcu-kfree"))
- pr_err("Failed to register kfree_rcu() shrinker!\n");
+
+ kfree_rcu_shrinker = shrinker_alloc(0, "rcu-kfree");
+ if (!kfree_rcu_shrinker) {
+ pr_err("Failed to allocate kfree_rcu() shrinker!\n");
+ return;
+ }
+
+ kfree_rcu_shrinker->count_objects = kfree_rcu_shrink_count;
+ kfree_rcu_shrinker->scan_objects = kfree_rcu_shrink_scan;
+ kfree_rcu_shrinker->seeks = DEFAULT_SEEKS;
+
+ shrinker_register(kfree_rcu_shrinker);
}
void __init rcu_init(void)
--
2.30.2
