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/* cgroupstats.h - exporting per-cgroup statistics
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*
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* Copyright IBM Corporation, 2007
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* Author Balbir Singh <balbir@linux.vnet.ibm.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2.1 of the GNU Lesser General Public License
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#ifndef _LINUX_CGROUPSTATS_H
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#define _LINUX_CGROUPSTATS_H
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#include <linux/types.h>
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#include <linux/taskstats.h>
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/*
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* Data shared between user space and kernel space on a per cgroup
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* basis. This data is shared using taskstats.
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*
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* Most of these states are derived by looking at the task->state value
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* For the nr_io_wait state, a flag in the delay accounting structure
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* indicates that the task is waiting on IO
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*
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* Each member is aligned to a 8 byte boundary.
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*/
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struct cgroupstats {
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__u64 nr_sleeping; /* Number of tasks sleeping */
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__u64 nr_running; /* Number of tasks running */
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__u64 nr_stopped; /* Number of tasks in stopped state */
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__u64 nr_uninterruptible; /* Number of tasks in uninterruptible */
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/* state */
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__u64 nr_io_wait; /* Number of tasks waiting on IO */
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};
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/*
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* Commands sent from userspace
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* Not versioned. New commands should only be inserted at the enum's end
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* prior to __CGROUPSTATS_CMD_MAX
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*/
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enum {
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CGROUPSTATS_CMD_UNSPEC = __TASKSTATS_CMD_MAX, /* Reserved */
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CGROUPSTATS_CMD_GET, /* user->kernel request/get-response */
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CGROUPSTATS_CMD_NEW, /* kernel->user event */
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__CGROUPSTATS_CMD_MAX,
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};
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#define CGROUPSTATS_CMD_MAX (__CGROUPSTATS_CMD_MAX - 1)
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enum {
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CGROUPSTATS_TYPE_UNSPEC = 0, /* Reserved */
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CGROUPSTATS_TYPE_CGROUP_STATS, /* contains name + stats */
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__CGROUPSTATS_TYPE_MAX,
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};
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#define CGROUPSTATS_TYPE_MAX (__CGROUPSTATS_TYPE_MAX - 1)
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enum {
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CGROUPSTATS_CMD_ATTR_UNSPEC = 0,
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CGROUPSTATS_CMD_ATTR_FD,
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__CGROUPSTATS_CMD_ATTR_MAX,
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};
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#define CGROUPSTATS_CMD_ATTR_MAX (__CGROUPSTATS_CMD_ATTR_MAX - 1)
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#endif /* _LINUX_CGROUPSTATS_H */
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