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85 lines
2.2 KiB
C
85 lines
2.2 KiB
C
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/* taskstats.h - exporting per-task statistics
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*
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* Copyright (C) Shailabh Nagar, IBM Corp. 2006
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* (C) Balbir Singh, IBM Corp. 2006
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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_TASKSTATS_H
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#define _LINUX_TASKSTATS_H
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/* Format for per-task data returned to userland when
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* - a task exits
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* - listener requests stats for a task
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*
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* The struct is versioned. Newer versions should only add fields to
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* the bottom of the struct to maintain backward compatibility.
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*
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*
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* To add new fields
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* a) bump up TASKSTATS_VERSION
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* b) add comment indicating new version number at end of struct
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* c) add new fields after version comment; maintain 64-bit alignment
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*/
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#define TASKSTATS_VERSION 1
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struct taskstats {
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/* Version 1 */
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__u64 version;
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};
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#define TASKSTATS_LISTEN_GROUP 0x1
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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 __TASKSTATS_CMD_MAX
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*/
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enum {
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TASKSTATS_CMD_UNSPEC = 0, /* Reserved */
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TASKSTATS_CMD_GET, /* user->kernel request/get-response */
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TASKSTATS_CMD_NEW, /* kernel->user event */
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__TASKSTATS_CMD_MAX,
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};
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#define TASKSTATS_CMD_MAX (__TASKSTATS_CMD_MAX - 1)
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enum {
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TASKSTATS_TYPE_UNSPEC = 0, /* Reserved */
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TASKSTATS_TYPE_PID, /* Process id */
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TASKSTATS_TYPE_TGID, /* Thread group id */
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TASKSTATS_TYPE_STATS, /* taskstats structure */
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TASKSTATS_TYPE_AGGR_PID, /* contains pid + stats */
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TASKSTATS_TYPE_AGGR_TGID, /* contains tgid + stats */
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__TASKSTATS_TYPE_MAX,
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};
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#define TASKSTATS_TYPE_MAX (__TASKSTATS_TYPE_MAX - 1)
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enum {
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TASKSTATS_CMD_ATTR_UNSPEC = 0,
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TASKSTATS_CMD_ATTR_PID,
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TASKSTATS_CMD_ATTR_TGID,
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__TASKSTATS_CMD_ATTR_MAX,
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};
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#define TASKSTATS_CMD_ATTR_MAX (__TASKSTATS_CMD_ATTR_MAX - 1)
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/* NETLINK_GENERIC related info */
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#define TASKSTATS_GENL_NAME "TASKSTATS"
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#define TASKSTATS_GENL_VERSION 0x1
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#endif /* _LINUX_TASKSTATS_H */
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