| Shailabh Nagar | c757249 | 2006-07-14 00:24:40 -0700 | [diff] [blame^] | 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 */ |