net,rcu: convert call_rcu(free_dm_hw_stat) to kfree_rcu() (fa81c0e1) · Commits · 戴 / test

The rcu callback free_dm_hw_stat() just calls a kfree(), so we use kfree_rcu() instead of the call_rcu(free_dm_hw_stat). Signed-off-by:

net/core/drop_monitor.c

+2 −10

Original line number	Diff line number	Diff line
		@@ -207,14 +207,6 @@ static void trace_napi_poll_hit(void ignore, struct napi_struct napi)
		rcu_read_unlock();
		}


		static void free_dm_hw_stat(struct rcu_head *head)
		{
		struct dm_hw_stat_delta *n;
		n = container_of(head, struct dm_hw_stat_delta, rcu);
		kfree(n);
		}

		static int set_all_monitor_traces(int state)
		{
		int rc = 0;
		@@ -245,7 +237,7 @@ static int set_all_monitor_traces(int state)
		list_for_each_entry_safe(new_stat, temp, &hw_stats_list, list) {
		if (new_stat->dev == NULL) {
		list_del_rcu(&new_stat->list);
		call_rcu(&new_stat->rcu, free_dm_hw_stat);
		kfree_rcu(new_stat, rcu);
		}
		}
		break;
		@@ -314,7 +306,7 @@ static int dropmon_net_event(struct notifier_block *ev_block,
		new_stat->dev = NULL;
		if (trace_state == TRACE_OFF) {
		list_del_rcu(&new_stat->list);
		call_rcu(&new_stat->rcu, free_dm_hw_stat);
		kfree_rcu(new_stat, rcu);
		break;
		}
		}