Initialize on-stack rcu_head for debugobjects
void init_rcu_head_on_stack(struct rcu_head * head);
head
pointer to rcu_head structure to be initialized
This function informs debugobjects of a new rcu_head structure that has been allocated as an auto variable on the stack. This function is not required for rcu_head structures that are statically defined or that are dynamically allocated on the heap. This function has no effect for !CONFIG_DEBUG_OBJECTS_RCU_HEAD kernel builds.