summaryrefslogblamecommitdiff
path: root/include/linux/taskstats.h
blob: 51f62759bea9fd23a5158e19f42b5480fde60e29 (plain) (tree) 
c757249af152 ^




















































































1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84




















































































                                                                               
/* taskstats.h - exporting per-task statistics
 *
 * Copyright (C) Shailabh Nagar, IBM Corp. 2006
 *           (C) Balbir Singh,   IBM Corp. 2006
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2.1 of the GNU Lesser General Public License
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it would be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifndef _LINUX_TASKSTATS_H
#define _LINUX_TASKSTATS_H

/* Format for per-task data returned to userland when
 *	- a task exits
 *	- listener requests stats for a task
 *
 * The struct is versioned. Newer versions should only add fields to
 * the bottom of the struct to maintain backward compatibility.
 *
 *
 * To add new fields
 *	a) bump up TASKSTATS_VERSION
 *	b) add comment indicating new version number at end of struct
 *	c) add new fields after version comment; maintain 64-bit alignment
 */

#define TASKSTATS_VERSION	1

struct taskstats {

	/* Version 1 */
	__u64	version;
};


#define TASKSTATS_LISTEN_GROUP	0x1

/*
 * Commands sent from userspace
 * Not versioned. New commands should only be inserted at the enum's end
 * prior to __TASKSTATS_CMD_MAX
 */

enum {
	TASKSTATS_CMD_UNSPEC = 0,	/* Reserved */
	TASKSTATS_CMD_GET,		/* user->kernel request/get-response */
	TASKSTATS_CMD_NEW,		/* kernel->user event */
	__TASKSTATS_CMD_MAX,
};

#define TASKSTATS_CMD_MAX (__TASKSTATS_CMD_MAX - 1)

enum {
	TASKSTATS_TYPE_UNSPEC = 0,	/* Reserved */
	TASKSTATS_TYPE_PID,		/* Process id */
	TASKSTATS_TYPE_TGID,		/* Thread group id */
	TASKSTATS_TYPE_STATS,		/* taskstats structure */
	TASKSTATS_TYPE_AGGR_PID,	/* contains pid + stats */
	TASKSTATS_TYPE_AGGR_TGID,	/* contains tgid + stats */
	__TASKSTATS_TYPE_MAX,
};

#define TASKSTATS_TYPE_MAX (__TASKSTATS_TYPE_MAX - 1)

enum {
	TASKSTATS_CMD_ATTR_UNSPEC = 0,
	TASKSTATS_CMD_ATTR_PID,
	TASKSTATS_CMD_ATTR_TGID,
	__TASKSTATS_CMD_ATTR_MAX,
};

#define TASKSTATS_CMD_ATTR_MAX (__TASKSTATS_CMD_ATTR_MAX - 1)

/* NETLINK_GENERIC related info */

#define TASKSTATS_GENL_NAME	"TASKSTATS"
#define TASKSTATS_GENL_VERSION	0x1

#endif /* _LINUX_TASKSTATS_H */