LXR linux/include/uapi/linux/cgroupstats.h

   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 */
  32struct 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
  47enum {
  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
  56enum {
  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
  64enum {
  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