include/linux/cgroup_rdma.h

   1 /*
   2  * Copyright (C) 2016 Parav Pandit <pandit.parav@gmail.com>
   3  *
   4  * This file is subject to the terms and conditions of version 2 of the GNU
   5  * General Public License. See the file COPYING in the main directory of the
   6  * Linux distribution for more details.
   7  */
   8
   9 #ifndef _CGROUP_RDMA_H
  10 #define _CGROUP_RDMA_H
  11
  12 #include <linux/cgroup.h>
  13
  14 enum rdmacg_resource_type {
  15         RDMACG_RESOURCE_HCA_HANDLE,
  16         RDMACG_RESOURCE_HCA_OBJECT,
  17         RDMACG_RESOURCE_MAX,
  18 };
  19
  20 #ifdef CONFIG_CGROUP_RDMA
  21
  22 struct rdma_cgroup {
  23         struct cgroup_subsys_state      css;
  24
  25         /*
  26          * head to keep track of all resource pools
  27          * that belongs to this cgroup.
  28          */
  29         struct list_head                rpools;
  30 };
  31
  32 struct rdmacg_device {
  33         struct list_head        dev_node;
  34         struct list_head        rpools;
  35         char                    *name;
  36 };
  37
  38 /*
  39  * APIs for RDMA/IB stack to publish when a device wants to
  40  * participate in resource accounting
  41  */
  42 int rdmacg_register_device(struct rdmacg_device *device);
  43 void rdmacg_unregister_device(struct rdmacg_device *device);
  44
  45 /* APIs for RDMA/IB stack to charge/uncharge pool specific resources */
  46 int rdmacg_try_charge(struct rdma_cgroup **rdmacg,
  47                       struct rdmacg_device *device,
  48                       enum rdmacg_resource_type index);
  49 void rdmacg_uncharge(struct rdma_cgroup *cg,
  50                      struct rdmacg_device *device,
  51                      enum rdmacg_resource_type index);
  52 #endif  /* CONFIG_CGROUP_RDMA */
  53 #endif  /* _CGROUP_RDMA_H */