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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
[karo-tx-linux.git] / 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 */