Commit 30088ad8 authored by Lai Jiangshan's avatar Lai Jiangshan Committed by Paul E. McKenney

cgroup,rcu: convert call_rcu(free_css_set_rcu) to kfree_rcu()

The rcu callback free_css_set_rcu() just calls a kfree(),
so we use kfree_rcu() instead of the call_rcu(free_css_set_rcu).
Signed-off-by: default avatarLai Jiangshan <laijs@cn.fujitsu.com>
Acked-by: default avatarPaul Menage <menage@google.com>
Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: default avatarJosh Triplett <josh@joshtriplett.org>
parent 1217ed1b
...@@ -326,12 +326,6 @@ static struct hlist_head *css_set_hash(struct cgroup_subsys_state *css[]) ...@@ -326,12 +326,6 @@ static struct hlist_head *css_set_hash(struct cgroup_subsys_state *css[])
return &css_set_table[index]; return &css_set_table[index];
} }
static void free_css_set_rcu(struct rcu_head *obj)
{
struct css_set *cg = container_of(obj, struct css_set, rcu_head);
kfree(cg);
}
/* We don't maintain the lists running through each css_set to its /* We don't maintain the lists running through each css_set to its
* task until after the first call to cgroup_iter_start(). This * task until after the first call to cgroup_iter_start(). This
* reduces the fork()/exit() overhead for people who have cgroups * reduces the fork()/exit() overhead for people who have cgroups
...@@ -375,7 +369,7 @@ static void __put_css_set(struct css_set *cg, int taskexit) ...@@ -375,7 +369,7 @@ static void __put_css_set(struct css_set *cg, int taskexit)
} }
write_unlock(&css_set_lock); write_unlock(&css_set_lock);
call_rcu(&cg->rcu_head, free_css_set_rcu); kfree_rcu(cg, rcu_head);
} }
/* /*
......
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