1 | /* SPDX-License-Identifier: LGPL-2.1 WITH Linux-syscall-note */ |
2 | /* cgroupstats.h - exporting per-cgroup statistics |
3 | * |
4 | * Copyright IBM Corporation, 2007 |
5 | * Author Balbir Singh <balbir@linux.vnet.ibm.com> |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify it |
8 | * under the terms of version 2.1 of the GNU Lesser General Public License |
9 | * as published by the Free Software Foundation. |
10 | * |
11 | * This program is distributed in the hope that it would be useful, but |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
14 | */ |
15 | |
16 | #ifndef _LINUX_CGROUPSTATS_H |
17 | #define _LINUX_CGROUPSTATS_H |
18 | |
19 | #include <linux/types.h> |
20 | #include <linux/taskstats.h> |
21 | |
22 | /* |
23 | * Data shared between user space and kernel space on a per cgroup |
24 | * basis. This data is shared using taskstats. |
25 | * |
26 | * Most of these states are derived by looking at the task->state value |
27 | * |
28 | * Each member is aligned to a 8 byte boundary. |
29 | */ |
30 | struct cgroupstats { |
31 | __u64 nr_sleeping; /* Number of tasks sleeping */ |
32 | __u64 nr_running; /* Number of tasks running */ |
33 | __u64 nr_stopped; /* Number of tasks in stopped state */ |
34 | __u64 nr_uninterruptible; /* Number of tasks in uninterruptible */ |
35 | /* state */ |
36 | __u64 nr_io_wait; /* Number of tasks waiting on IO */ |
37 | }; |
38 | |
39 | /* |
40 | * Commands sent from userspace |
41 | * Not versioned. New commands should only be inserted at the enum's end |
42 | * prior to __CGROUPSTATS_CMD_MAX |
43 | */ |
44 | |
45 | enum { |
46 | CGROUPSTATS_CMD_UNSPEC = __TASKSTATS_CMD_MAX, /* Reserved */ |
47 | CGROUPSTATS_CMD_GET, /* user->kernel request/get-response */ |
48 | CGROUPSTATS_CMD_NEW, /* kernel->user event */ |
49 | __CGROUPSTATS_CMD_MAX, |
50 | }; |
51 | |
52 | #define CGROUPSTATS_CMD_MAX (__CGROUPSTATS_CMD_MAX - 1) |
53 | |
54 | enum { |
55 | CGROUPSTATS_TYPE_UNSPEC = 0, /* Reserved */ |
56 | CGROUPSTATS_TYPE_CGROUP_STATS, /* contains name + stats */ |
57 | __CGROUPSTATS_TYPE_MAX, |
58 | }; |
59 | |
60 | #define CGROUPSTATS_TYPE_MAX (__CGROUPSTATS_TYPE_MAX - 1) |
61 | |
62 | enum { |
63 | CGROUPSTATS_CMD_ATTR_UNSPEC = 0, |
64 | CGROUPSTATS_CMD_ATTR_FD, |
65 | __CGROUPSTATS_CMD_ATTR_MAX, |
66 | }; |
67 | |
68 | #define CGROUPSTATS_CMD_ATTR_MAX (__CGROUPSTATS_CMD_ATTR_MAX - 1) |
69 | |
70 | #endif /* _LINUX_CGROUPSTATS_H */ |
71 | |