af6363374c
net_prio is the only cgroup which is allowed to be built as a module. The savings from allowing one controller to be built as a module are tiny especially given that cgroup module support itself adds quite a bit of complexity. Given that none of other controllers has much chance of being made a module and that we're unlikely to add new modular controllers, the added complexity is simply not justifiable. As a first step to drop cgroup module support, this patch changes the config option to bool from tristate and drops module related code from it. Also, while an earlier commitfe1217c4f3("net: net_cls: move cgroupfs classid handling into core") dropped module support from net_cls cgroup, it retained a call to cgroup_load_subsys(), which is noop for built-in controllers. Drop it along with init_netclassid_cgroup(). v2: Removed modular version of task_netprioidx() in include/net/netprio_cgroup.h as suggested by Li Zefan. v3: Rebased on top offe1217c4f3("net: net_cls: move cgroupfs classid handling into core"). net_cls cgroup part is mostly dropped except for removal of init_netclassid_cgroup(). Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Neil Horman <nhorman@tuxdriver.com> Acked-by: "David S. Miller" <davem@davemloft.net> Acked-by: Li Zefan <lizefan@huawei.com> Cc: Thomas Graf <tgraf@suug.ch>
51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
/*
|
|
* netprio_cgroup.h Control Group Priority set
|
|
*
|
|
*
|
|
* Authors: Neil Horman <nhorman@tuxdriver.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the Free
|
|
* Software Foundation; either version 2 of the License, or (at your option)
|
|
* any later version.
|
|
*
|
|
*/
|
|
|
|
#ifndef _NETPRIO_CGROUP_H
|
|
#define _NETPRIO_CGROUP_H
|
|
|
|
#include <linux/cgroup.h>
|
|
#include <linux/hardirq.h>
|
|
#include <linux/rcupdate.h>
|
|
|
|
#if IS_ENABLED(CONFIG_CGROUP_NET_PRIO)
|
|
struct netprio_map {
|
|
struct rcu_head rcu;
|
|
u32 priomap_len;
|
|
u32 priomap[];
|
|
};
|
|
|
|
void sock_update_netprioidx(struct sock *sk);
|
|
|
|
static inline u32 task_netprioidx(struct task_struct *p)
|
|
{
|
|
struct cgroup_subsys_state *css;
|
|
u32 idx;
|
|
|
|
rcu_read_lock();
|
|
css = task_css(p, net_prio_subsys_id);
|
|
idx = css->cgroup->id;
|
|
rcu_read_unlock();
|
|
return idx;
|
|
}
|
|
#else /* !CONFIG_CGROUP_NET_PRIO */
|
|
static inline u32 task_netprioidx(struct task_struct *p)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#define sock_update_netprioidx(sk)
|
|
|
|
#endif /* CONFIG_CGROUP_NET_PRIO */
|
|
#endif /* _NET_CLS_CGROUP_H */
|