39d3e7584a
Added rdma cgroup controller that does accounting, limit enforcement on rdma/IB resources. Added rdma cgroup header file which defines its APIs to perform charging/uncharging functionality. It also defined APIs for RDMA/IB stack for device registration. Devices which are registered will participate in controller functions of accounting and limit enforcements. It define rdmacg_device structure to bind IB stack and RDMA cgroup controller. RDMA resources are tracked using resource pool. Resource pool is per device, per cgroup entity which allows setting up accounting limits on per device basis. Currently resources are defined by the RDMA cgroup. Resource pool is created/destroyed dynamically whenever charging/uncharging occurs respectively and whenever user configuration is done. Its a tradeoff of memory vs little more code space that creates resource pool object whenever necessary, instead of creating them during cgroup creation and device registration time. Signed-off-by: Parav Pandit <pandit.parav@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
54 lines
1.3 KiB
C
54 lines
1.3 KiB
C
/*
|
|
* Copyright (C) 2016 Parav Pandit <pandit.parav@gmail.com>
|
|
*
|
|
* This file is subject to the terms and conditions of version 2 of the GNU
|
|
* General Public License. See the file COPYING in the main directory of the
|
|
* Linux distribution for more details.
|
|
*/
|
|
|
|
#ifndef _CGROUP_RDMA_H
|
|
#define _CGROUP_RDMA_H
|
|
|
|
#include <linux/cgroup.h>
|
|
|
|
enum rdmacg_resource_type {
|
|
RDMACG_RESOURCE_HCA_HANDLE,
|
|
RDMACG_RESOURCE_HCA_OBJECT,
|
|
RDMACG_RESOURCE_MAX,
|
|
};
|
|
|
|
#ifdef CONFIG_CGROUP_RDMA
|
|
|
|
struct rdma_cgroup {
|
|
struct cgroup_subsys_state css;
|
|
|
|
/*
|
|
* head to keep track of all resource pools
|
|
* that belongs to this cgroup.
|
|
*/
|
|
struct list_head rpools;
|
|
};
|
|
|
|
struct rdmacg_device {
|
|
struct list_head dev_node;
|
|
struct list_head rpools;
|
|
char *name;
|
|
};
|
|
|
|
/*
|
|
* APIs for RDMA/IB stack to publish when a device wants to
|
|
* participate in resource accounting
|
|
*/
|
|
int rdmacg_register_device(struct rdmacg_device *device);
|
|
void rdmacg_unregister_device(struct rdmacg_device *device);
|
|
|
|
/* APIs for RDMA/IB stack to charge/uncharge pool specific resources */
|
|
int rdmacg_try_charge(struct rdma_cgroup **rdmacg,
|
|
struct rdmacg_device *device,
|
|
enum rdmacg_resource_type index);
|
|
void rdmacg_uncharge(struct rdma_cgroup *cg,
|
|
struct rdmacg_device *device,
|
|
enum rdmacg_resource_type index);
|
|
#endif /* CONFIG_CGROUP_RDMA */
|
|
#endif /* _CGROUP_RDMA_H */
|