提交 cefcb602 编写于 作者: P Paul E. McKenney

net,rcu: Convert call_rcu(xt_rateest_free_rcu) to kfree_rcu()

The RCU callback xt_rateest_free_rcu() just calls kfree(), so we can
use kfree_rcu() instead of call_rcu().  This also allows us to dispense
with an rcu_barrier() call, speeding up unloading of this module.
Signed-off-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Patrick McHardy <kaber@trash.net>
Reviewed-by: NJosh Triplett <josh@joshtriplett.org>
上级 a95cded3
......@@ -60,11 +60,6 @@ struct xt_rateest *xt_rateest_lookup(const char *name)
}
EXPORT_SYMBOL_GPL(xt_rateest_lookup);
static void xt_rateest_free_rcu(struct rcu_head *head)
{
kfree(container_of(head, struct xt_rateest, rcu));
}
void xt_rateest_put(struct xt_rateest *est)
{
mutex_lock(&xt_rateest_mutex);
......@@ -75,7 +70,7 @@ void xt_rateest_put(struct xt_rateest *est)
* gen_estimator est_timer() might access est->lock or bstats,
* wait a RCU grace period before freeing 'est'
*/
call_rcu(&est->rcu, xt_rateest_free_rcu);
kfree_rcu(est, rcu);
}
mutex_unlock(&xt_rateest_mutex);
}
......@@ -188,7 +183,6 @@ static int __init xt_rateest_tg_init(void)
static void __exit xt_rateest_tg_fini(void)
{
xt_unregister_target(&xt_rateest_tg_reg);
rcu_barrier(); /* Wait for completion of call_rcu()'s (xt_rateest_free_rcu) */
}
......
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