projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 846c7bb0 BS |
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 */ |