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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 | */ | |
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 */ |