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1/* cgroupstats.h - exporting per-cgroup statistics
2 *
3 * Copyright IBM Corporation, 2007
4 * Author Balbir Singh <balbir@linux.vnet.ibm.com>
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of version 2.1 of the GNU Lesser General Public License
8 * as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it would be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13 */
14
15#ifndef _LINUX_CGROUPSTATS_H
16#define _LINUX_CGROUPSTATS_H
17
18#include <linux/taskstats.h>
19
20/*
21 * Data shared between user space and kernel space on a per cgroup
22 * basis. This data is shared using taskstats.
23 *
24 * Most of these states are derived by looking at the task->state value
25 * For the nr_io_wait state, a flag in the delay accounting structure
26 * indicates that the task is waiting on IO
27 *
28 * Each member is aligned to a 8 byte boundary.
29 */
30struct 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
45enum {
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
54enum {
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
62enum {
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 */