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e2be04c7f9
Many user space API headers have licensing information, which is either
incomplete, badly formatted or just a shorthand for referring to the
license under which the file is supposed to be. This makes it hard for
compliance tools to determine the correct license.
Update these files with an SPDX license identifier. The identifier was
chosen based on the license information in the file.
GPL/LGPL licensed headers get the matching GPL/LGPL SPDX license
identifier with the added 'WITH Linux-syscall-note' exception, which is
the officially assigned exception identifier for the kernel syscall
exception:
NOTE! This copyright does *not* cover user programs that use kernel
services by normal system calls - this is merely considered normal use
of the kernel, and does *not* fall under the heading of "derived work".
This exception makes it possible to include GPL headers into non GPL
code, without confusing license compliance tools.
Headers which have either explicit dual licensing or are just licensed
under a non GPL license are updated with the corresponding SPDX
identifier and the GPLv2 with syscall exception identifier. The format
is:
((GPL-2.0 WITH Linux-syscall-note) OR SPDX-ID-OF-OTHER-LICENSE)
SPDX license identifiers are a legally binding shorthand, which can be
used instead of the full boiler plate text. The update does not remove
existing license information as this has to be done on a case by case
basis and the copyright holders might have to be consulted. This will
happen in a separate step.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne. See the previous patch in this series for the
methodology of how this patch was researched.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
/* SPDX-License-Identifier: LGPL-2.1 WITH Linux-syscall-note */
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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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