1 /* SPDX-License-Identifier: LGPL-2.1 WITH Linux-syscall-note */ 2 /* cgroupstats.h - exporting per-cgroup statistics 3 * 4 * Copyright IBM Corporation, 2007 5 * Author Balbir Singh <balbir@linux.vnet.ibm.com> 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of version 2.1 of the GNU Lesser General Public License 9 * as published by the Free Software Foundation. 10 * 11 * This program is distributed in the hope that it would be useful, but 12 * WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 14 */ 15 16 #ifndef _LINUX_CGROUPSTATS_H 17 #define _LINUX_CGROUPSTATS_H 18 19 #include <linux/types.h> 20 #include <linux/taskstats.h> 21 22 /* 23 * Data shared between user space and kernel space on a per cgroup 24 * basis. This data is shared using taskstats. 25 * 26 * Most of these states are derived by looking at the task->state value 27 * For the nr_io_wait state, a flag in the delay accounting structure 28 * indicates that the task is waiting on IO 29 * 30 * Each member is aligned to a 8 byte boundary. 31 */ 32 struct cgroupstats { 33 __u64 nr_sleeping; /* Number of tasks sleeping */ 34 __u64 nr_running; /* Number of tasks running */ 35 __u64 nr_stopped; /* Number of tasks in stopped state */ 36 __u64 nr_uninterruptible; /* Number of tasks in uninterruptible */ 37 /* state */ 38 __u64 nr_io_wait; /* Number of tasks waiting on IO */ 39 }; 40 41 /* 42 * Commands sent from userspace 43 * Not versioned. New commands should only be inserted at the enum's end 44 * prior to __CGROUPSTATS_CMD_MAX 45 */ 46 47 enum { 48 CGROUPSTATS_CMD_UNSPEC = __TASKSTATS_CMD_MAX, /* Reserved */ 49 CGROUPSTATS_CMD_GET, /* user->kernel request/get-response */ 50 CGROUPSTATS_CMD_NEW, /* kernel->user event */ 51 __CGROUPSTATS_CMD_MAX, 52 }; 53 54 #define CGROUPSTATS_CMD_MAX (__CGROUPSTATS_CMD_MAX - 1) 55 56 enum { 57 CGROUPSTATS_TYPE_UNSPEC = 0, /* Reserved */ 58 CGROUPSTATS_TYPE_CGROUP_STATS, /* contains name + stats */ 59 __CGROUPSTATS_TYPE_MAX, 60 }; 61 62 #define CGROUPSTATS_TYPE_MAX (__CGROUPSTATS_TYPE_MAX - 1) 63 64 enum { 65 CGROUPSTATS_CMD_ATTR_UNSPEC = 0, 66 CGROUPSTATS_CMD_ATTR_FD, 67 __CGROUPSTATS_CMD_ATTR_MAX, 68 }; 69 70 #define CGROUPSTATS_CMD_ATTR_MAX (__CGROUPSTATS_CMD_ATTR_MAX - 1) 71 72 #endif /* _LINUX_CGROUPSTATS_H */ 73