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/types.h> 19 #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 */ 31 struct 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 46 enum { 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 55 enum { 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 63 enum { 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 */ 72