This is required to prevent callbacks triggering RCU machinery too
quickly and too often, which adds more power to the system.
Signed-off-by: Joel Fernandes (Google) <joel@xxxxxxxxxxxxxxxxx>
---
kernel/fork.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/kernel/fork.c b/kernel/fork.c
index c9a2e19d67e5..a4535cf5446f 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -227,7 +227,7 @@ static void thread_stack_delayed_free(struct task_struct *tsk)
struct vm_stack *vm_stack = tsk->stack;
vm_stack->stack_vm_area = tsk->stack_vm_area;
- call_rcu(&vm_stack->rcu, thread_stack_free_rcu);
+ call_rcu_lazy(&vm_stack->rcu, thread_stack_free_rcu);
}
static int free_vm_stack_cache(unsigned int cpu)
@@ -354,7 +354,7 @@ static void thread_stack_delayed_free(struct task_struct *tsk)
{
struct rcu_head *rh = tsk->stack;
- call_rcu(rh, thread_stack_free_rcu);
+ call_rcu_lazy(rh, thread_stack_free_rcu);
}
static int alloc_thread_stack_node(struct task_struct *tsk, int node)
@@ -389,7 +389,7 @@ static void thread_stack_delayed_free(struct task_struct *tsk)
{
struct rcu_head *rh = tsk->stack;
- call_rcu(rh, thread_stack_free_rcu);
+ call_rcu_lazy(rh, thread_stack_free_rcu);
}
static int alloc_thread_stack_node(struct task_struct *tsk, int node)
--
2.37.2.609.g9ff673ca1a-goog
