提交 8fb974c9 编写于 作者: D Daniel Wagner 提交者: Tejun Heo

cgroup: net_cls: Do not define task_cls_classid() when not selected

task_cls_classid() should not be defined in case the configuration is
CONFIG_NET_CLS_CGROUP=n. The reason is that in a following patch the
net_cls_subsys_id will only be defined if CONFIG_NET_CLS_CGROUP!=n.
When net_cls is not built at all a callee should only get an empty
task_cls_classid() without any references to net_cls_subsys_id.
Signed-off-by: NDaniel Wagner <daniel.wagner@bmw-carit.de>
Signed-off-by: NTejun Heo <tj@kernel.org>
Acked-by: NLi Zefan <lizefan@huawei.com>
Acked-by: NNeil Horman <nhorman@tuxdriver.com>
Cc: Gao feng <gaofeng@cn.fujitsu.com>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: John Fastabend <john.r.fastabend@intel.com>
Cc: netdev@vger.kernel.org
Cc: cgroups@vger.kernel.org
上级 f3419807
......@@ -17,7 +17,7 @@
#include <linux/hardirq.h>
#include <linux/rcupdate.h>
#ifdef CONFIG_CGROUPS
#if IS_ENABLED(CONFIG_NET_CLS_CGROUP)
struct cgroup_cls_state
{
struct cgroup_subsys_state css;
......@@ -26,7 +26,7 @@ struct cgroup_cls_state
extern void sock_update_classid(struct sock *sk);
#ifdef CONFIG_NET_CLS_CGROUP
#if IS_BUILTIN(CONFIG_NET_CLS_CGROUP)
static inline u32 task_cls_classid(struct task_struct *p)
{
int classid;
......@@ -41,7 +41,8 @@ static inline u32 task_cls_classid(struct task_struct *p)
return classid;
}
#else
#elif IS_MODULE(CONFIG_NET_CLS_CGROUP)
extern int net_cls_subsys_id;
static inline u32 task_cls_classid(struct task_struct *p)
......@@ -63,7 +64,7 @@ static inline u32 task_cls_classid(struct task_struct *p)
return classid;
}
#endif
#else
#else /* !CGROUP_NET_CLS_CGROUP */
static inline void sock_update_classid(struct sock *sk)
{
}
......@@ -72,5 +73,5 @@ static inline u32 task_cls_classid(struct task_struct *p)
{
return 0;
}
#endif
#endif /* CGROUP_NET_CLS_CGROUP */
#endif /* _NET_CLS_CGROUP_H */
......@@ -1223,6 +1223,7 @@ static void sk_prot_free(struct proto *prot, struct sock *sk)
}
#ifdef CONFIG_CGROUPS
#if IS_ENABLED(CONFIG_NET_CLS_CGROUP)
void sock_update_classid(struct sock *sk)
{
u32 classid;
......@@ -1234,6 +1235,7 @@ void sock_update_classid(struct sock *sk)
sk->sk_classid = classid;
}
EXPORT_SYMBOL(sock_update_classid);
#endif
void sock_update_netprioidx(struct sock *sk, struct task_struct *task)
{
......
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