locking: rwsem: spin faster

tweak rwsem owner spinning a bit Signed-off-by: Alexandre Frade <kernel@xanmod.org>
xanmod · Jan 8, 2024 · 8c459ef · 8c459ef
1 parent 59a51f8
commit 8c459ef
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/kernel/locking/rwsem.c b/kernel/locking/rwsem.c
@@ -749,6 +749,7 @@ rwsem_spin_on_owner(struct rw_semaphore *sem)
 	struct task_struct *new, *owner;
 	unsigned long flags, new_flags;
 	enum owner_state state;
+	int i = 0;
 
 	lockdep_assert_preemption_disabled();
 
@@ -785,7 +786,8 @@ rwsem_spin_on_owner(struct rw_semaphore *sem)
 			break;
 		}
 
-		cpu_relax();
+		if (i++ > 1000)
+			cpu_relax();
 	}
 
 	return state;