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Balbir Singh846c7bb2007-10-18 23:39:44 -07001/* 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
Jaswinder Singh Rajput59e4cf12009-01-30 20:43:31 +053018#include <linux/types.h>
Balbir Singh846c7bb2007-10-18 23:39:44 -070019#include <linux/taskstats.h>
20
21/*
22 * Data shared between user space and kernel space on a per cgroup
23 * basis. This data is shared using taskstats.
24 *
25 * Most of these states are derived by looking at the task->state value
26 * For the nr_io_wait state, a flag in the delay accounting structure
27 * indicates that the task is waiting on IO
28 *
29 * Each member is aligned to a 8 byte boundary.
30 */
31struct cgroupstats {
32 __u64 nr_sleeping; /* Number of tasks sleeping */
33 __u64 nr_running; /* Number of tasks running */
34 __u64 nr_stopped; /* Number of tasks in stopped state */
35 __u64 nr_uninterruptible; /* Number of tasks in uninterruptible */
36 /* state */
37 __u64 nr_io_wait; /* Number of tasks waiting on IO */
38};
39
40/*
41 * Commands sent from userspace
42 * Not versioned. New commands should only be inserted at the enum's end
43 * prior to __CGROUPSTATS_CMD_MAX
44 */
45
46enum {
47 CGROUPSTATS_CMD_UNSPEC = __TASKSTATS_CMD_MAX, /* Reserved */
48 CGROUPSTATS_CMD_GET, /* user->kernel request/get-response */
49 CGROUPSTATS_CMD_NEW, /* kernel->user event */
50 __CGROUPSTATS_CMD_MAX,
51};
52
53#define CGROUPSTATS_CMD_MAX (__CGROUPSTATS_CMD_MAX - 1)
54
55enum {
56 CGROUPSTATS_TYPE_UNSPEC = 0, /* Reserved */
57 CGROUPSTATS_TYPE_CGROUP_STATS, /* contains name + stats */
58 __CGROUPSTATS_TYPE_MAX,
59};
60
61#define CGROUPSTATS_TYPE_MAX (__CGROUPSTATS_TYPE_MAX - 1)
62
63enum {
64 CGROUPSTATS_CMD_ATTR_UNSPEC = 0,
65 CGROUPSTATS_CMD_ATTR_FD,
66 __CGROUPSTATS_CMD_ATTR_MAX,
67};
68
69#define CGROUPSTATS_CMD_ATTR_MAX (__CGROUPSTATS_CMD_ATTR_MAX - 1)
70
71#endif /* _LINUX_CGROUPSTATS_H */