1*4882a593Smuzhiyun /* SPDX-License-Identifier: LGPL-2.1 WITH Linux-syscall-note */ 2*4882a593Smuzhiyun /* cgroupstats.h - exporting per-cgroup statistics 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * Copyright IBM Corporation, 2007 5*4882a593Smuzhiyun * Author Balbir Singh <balbir@linux.vnet.ibm.com> 6*4882a593Smuzhiyun * 7*4882a593Smuzhiyun * This program is free software; you can redistribute it and/or modify it 8*4882a593Smuzhiyun * under the terms of version 2.1 of the GNU Lesser General Public License 9*4882a593Smuzhiyun * as published by the Free Software Foundation. 10*4882a593Smuzhiyun * 11*4882a593Smuzhiyun * This program is distributed in the hope that it would be useful, but 12*4882a593Smuzhiyun * WITHOUT ANY WARRANTY; without even the implied warranty of 13*4882a593Smuzhiyun * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 14*4882a593Smuzhiyun */ 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun #ifndef _LINUX_CGROUPSTATS_H 17*4882a593Smuzhiyun #define _LINUX_CGROUPSTATS_H 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun #include <linux/types.h> 20*4882a593Smuzhiyun #include <linux/taskstats.h> 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun /* 23*4882a593Smuzhiyun * Data shared between user space and kernel space on a per cgroup 24*4882a593Smuzhiyun * basis. This data is shared using taskstats. 25*4882a593Smuzhiyun * 26*4882a593Smuzhiyun * Most of these states are derived by looking at the task->state value 27*4882a593Smuzhiyun * For the nr_io_wait state, a flag in the delay accounting structure 28*4882a593Smuzhiyun * indicates that the task is waiting on IO 29*4882a593Smuzhiyun * 30*4882a593Smuzhiyun * Each member is aligned to a 8 byte boundary. 31*4882a593Smuzhiyun */ 32*4882a593Smuzhiyun struct cgroupstats { 33*4882a593Smuzhiyun __u64 nr_sleeping; /* Number of tasks sleeping */ 34*4882a593Smuzhiyun __u64 nr_running; /* Number of tasks running */ 35*4882a593Smuzhiyun __u64 nr_stopped; /* Number of tasks in stopped state */ 36*4882a593Smuzhiyun __u64 nr_uninterruptible; /* Number of tasks in uninterruptible */ 37*4882a593Smuzhiyun /* state */ 38*4882a593Smuzhiyun __u64 nr_io_wait; /* Number of tasks waiting on IO */ 39*4882a593Smuzhiyun }; 40*4882a593Smuzhiyun 41*4882a593Smuzhiyun /* 42*4882a593Smuzhiyun * Commands sent from userspace 43*4882a593Smuzhiyun * Not versioned. New commands should only be inserted at the enum's end 44*4882a593Smuzhiyun * prior to __CGROUPSTATS_CMD_MAX 45*4882a593Smuzhiyun */ 46*4882a593Smuzhiyun 47*4882a593Smuzhiyun enum { 48*4882a593Smuzhiyun CGROUPSTATS_CMD_UNSPEC = __TASKSTATS_CMD_MAX, /* Reserved */ 49*4882a593Smuzhiyun CGROUPSTATS_CMD_GET, /* user->kernel request/get-response */ 50*4882a593Smuzhiyun CGROUPSTATS_CMD_NEW, /* kernel->user event */ 51*4882a593Smuzhiyun __CGROUPSTATS_CMD_MAX, 52*4882a593Smuzhiyun }; 53*4882a593Smuzhiyun 54*4882a593Smuzhiyun #define CGROUPSTATS_CMD_MAX (__CGROUPSTATS_CMD_MAX - 1) 55*4882a593Smuzhiyun 56*4882a593Smuzhiyun enum { 57*4882a593Smuzhiyun CGROUPSTATS_TYPE_UNSPEC = 0, /* Reserved */ 58*4882a593Smuzhiyun CGROUPSTATS_TYPE_CGROUP_STATS, /* contains name + stats */ 59*4882a593Smuzhiyun __CGROUPSTATS_TYPE_MAX, 60*4882a593Smuzhiyun }; 61*4882a593Smuzhiyun 62*4882a593Smuzhiyun #define CGROUPSTATS_TYPE_MAX (__CGROUPSTATS_TYPE_MAX - 1) 63*4882a593Smuzhiyun 64*4882a593Smuzhiyun enum { 65*4882a593Smuzhiyun CGROUPSTATS_CMD_ATTR_UNSPEC = 0, 66*4882a593Smuzhiyun CGROUPSTATS_CMD_ATTR_FD, 67*4882a593Smuzhiyun __CGROUPSTATS_CMD_ATTR_MAX, 68*4882a593Smuzhiyun }; 69*4882a593Smuzhiyun 70*4882a593Smuzhiyun #define CGROUPSTATS_CMD_ATTR_MAX (__CGROUPSTATS_CMD_ATTR_MAX - 1) 71*4882a593Smuzhiyun 72*4882a593Smuzhiyun #endif /* _LINUX_CGROUPSTATS_H */ 73