[RFC PATCH v3 6/7] lockref: use hq-spinlock

Fedorov Nikita
2026-04-15T16:47:47Z

Example of hq-spinlock enabled for dentry->lockref spinlock
(used in nginx testing scenario)

In the evaluated nginx single-file workload on Kunpeng 920, throughput
gains reached 68-78% at 64-96 workers.

Co-developed-by: Anatoly Stepanov <stepanov.anatoly@huawei.com>
Signed-off-by: Anatoly Stepanov <stepanov.anatoly@huawei.com>
Co-developed-by: Nikita Fedorov <fedorov.nikita@h-partners.com>
Signed-off-by: Nikita Fedorov <fedorov.nikita@h-partners.com>
---
include/linux/lockref.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/lockref.h b/include/linux/lockref.h
index 6ded24cdb4..19a1c3823c 100644
--- a/include/linux/lockref.h
+++ b/include/linux/lockref.h
@@ -42,7 +42,7 @@ struct lockref {
*/
static inline void lockref_init(struct lockref *lockref)
{
- spin_lock_init(&lockref->lock);
+ spin_lock_init_hq(&lockref->lock);
lockref->count = 1;
}

--
2.34.1