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1 | /* taskstats.h - exporting per-task statistics |
2 | * | |
3 | * Copyright (C) Shailabh Nagar, IBM Corp. 2006 | |
4 | * (C) Balbir Singh, IBM Corp. 2006 | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of version 2.1 of the GNU Lesser General Public License | |
8 | * as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it would be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
13 | */ | |
14 | ||
15 | #ifndef _LINUX_TASKSTATS_H | |
16 | #define _LINUX_TASKSTATS_H | |
17 | ||
18 | /* Format for per-task data returned to userland when | |
19 | * - a task exits | |
20 | * - listener requests stats for a task | |
21 | * | |
22 | * The struct is versioned. Newer versions should only add fields to | |
23 | * the bottom of the struct to maintain backward compatibility. | |
24 | * | |
25 | * | |
26 | * To add new fields | |
27 | * a) bump up TASKSTATS_VERSION | |
28 | * b) add comment indicating new version number at end of struct | |
29 | * c) add new fields after version comment; maintain 64-bit alignment | |
30 | */ | |
31 | ||
32 | #define TASKSTATS_VERSION 1 | |
33 | ||
34 | struct taskstats { | |
35 | ||
36 | /* Version 1 */ | |
37 | __u64 version; | |
38 | }; | |
39 | ||
40 | ||
41 | #define TASKSTATS_LISTEN_GROUP 0x1 | |
42 | ||
43 | /* | |
44 | * Commands sent from userspace | |
45 | * Not versioned. New commands should only be inserted at the enum's end | |
46 | * prior to __TASKSTATS_CMD_MAX | |
47 | */ | |
48 | ||
49 | enum { | |
50 | TASKSTATS_CMD_UNSPEC = 0, /* Reserved */ | |
51 | TASKSTATS_CMD_GET, /* user->kernel request/get-response */ | |
52 | TASKSTATS_CMD_NEW, /* kernel->user event */ | |
53 | __TASKSTATS_CMD_MAX, | |
54 | }; | |
55 | ||
56 | #define TASKSTATS_CMD_MAX (__TASKSTATS_CMD_MAX - 1) | |
57 | ||
58 | enum { | |
59 | TASKSTATS_TYPE_UNSPEC = 0, /* Reserved */ | |
60 | TASKSTATS_TYPE_PID, /* Process id */ | |
61 | TASKSTATS_TYPE_TGID, /* Thread group id */ | |
62 | TASKSTATS_TYPE_STATS, /* taskstats structure */ | |
63 | TASKSTATS_TYPE_AGGR_PID, /* contains pid + stats */ | |
64 | TASKSTATS_TYPE_AGGR_TGID, /* contains tgid + stats */ | |
65 | __TASKSTATS_TYPE_MAX, | |
66 | }; | |
67 | ||
68 | #define TASKSTATS_TYPE_MAX (__TASKSTATS_TYPE_MAX - 1) | |
69 | ||
70 | enum { | |
71 | TASKSTATS_CMD_ATTR_UNSPEC = 0, | |
72 | TASKSTATS_CMD_ATTR_PID, | |
73 | TASKSTATS_CMD_ATTR_TGID, | |
74 | __TASKSTATS_CMD_ATTR_MAX, | |
75 | }; | |
76 | ||
77 | #define TASKSTATS_CMD_ATTR_MAX (__TASKSTATS_CMD_ATTR_MAX - 1) | |
78 | ||
79 | /* NETLINK_GENERIC related info */ | |
80 | ||
81 | #define TASKSTATS_GENL_NAME "TASKSTATS" | |
82 | #define TASKSTATS_GENL_VERSION 0x1 | |
83 | ||
84 | #endif /* _LINUX_TASKSTATS_H */ |