drivers/infiniband/core/cgroup.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (C) 2016 Parav Pandit <pandit.parav@gmail.com>
   4  */
   5
   6 #include "core_priv.h"
   7
   8 /**
   9  * ib_device_register_rdmacg - register with rdma cgroup.
  10  * @device: device to register to participate in resource
  11  *          accounting by rdma cgroup.
  12  *
  13  * Register with the rdma cgroup. Should be called before
  14  * exposing rdma device to user space applications to avoid
  15  * resource accounting leak.
  16  */
  17 void ib_device_register_rdmacg(struct ib_device *device)
  18 {
  19         device->cg_device.name = device->name;
  20         rdmacg_register_device(&device->cg_device);
  21 }
  22
  23 /**
  24  * ib_device_unregister_rdmacg - unregister with rdma cgroup.
  25  * @device: device to unregister.
  26  *
  27  * Unregister with the rdma cgroup. Should be called after
  28  * all the resources are deallocated, and after a stage when any
  29  * other resource allocation by user application cannot be done
  30  * for this device to avoid any leak in accounting.
  31  */
  32 void ib_device_unregister_rdmacg(struct ib_device *device)
  33 {
  34         rdmacg_unregister_device(&device->cg_device);
  35 }
  36
  37 int ib_rdmacg_try_charge(struct ib_rdmacg_object *cg_obj,
  38                          struct ib_device *device,
  39                          enum rdmacg_resource_type resource_index)
  40 {
  41         return rdmacg_try_charge(&cg_obj->cg, &device->cg_device,
  42                                  resource_index);
  43 }
  44 EXPORT_SYMBOL(ib_rdmacg_try_charge);
  45
  46 void ib_rdmacg_uncharge(struct ib_rdmacg_object *cg_obj,
  47                         struct ib_device *device,
  48                         enum rdmacg_resource_type resource_index)
  49 {
  50         rdmacg_uncharge(cg_obj->cg, &device->cg_device,
  51                         resource_index);
  52 }
  53 EXPORT_SYMBOL(ib_rdmacg_uncharge);