projects / blktrace.git / blame
| Commit | Line | Data |
|---|---|---|
| d47a3fec AB |
1 | /* |
| 2 | * Blktrace record utility - Convert binary trace data into bunches of IOs | |
| 3 | * | |
| 4 | * Copyright (C) 2007 Alan D. Brunelle <Alan.Brunelle@hp.com> | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or modify | |
| 7 | * it under the terms of the GNU General Public License as published by | |
| 8 | * the Free Software Foundation; either version 2 of the License, or | |
| 9 | * (at your option) any later version. | |
| 10 | * | |
| 11 | * This program is distributed in the hope that it will be useful, | |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | * GNU General Public License for more details. | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU General Public License | |
| 17 | * along with this program; if not, write to the Free Software | |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 19 | */ | |
| 20 | ||
| 21 | #if !defined(__BTRECORD_H__) | |
| 22 | #define __BTRECORD_H__ | |
| 23 | ||
| 24 | #include <asm/types.h> | |
| 25 | ||
| 26 | #define BT_MAX_PKTS 512 | |
| 27 | ||
| 28 | /* | |
| 29 | * Header for each bunch | |
| 30 | * | |
| 31 | * @nkts: Number of IO packets to process | |
| 32 | * @time_stamp: Time stamp for this bunch of IOs | |
| 33 | */ | |
| 34 | struct io_bunch_hdr { | |
| 35 | __u64 npkts; | |
| 36 | __u64 time_stamp; | |
| 37 | }; | |
| 38 | ||
| 39 | /* | |
| 40 | * IO specifer | |
| 41 | * | |
| 42 | * @sector: Sector number of IO | |
| 43 | * @nbytes: Number of bytes to process | |
| 44 | * @rw: IO direction: 0 = write, 1 = read | |
| 45 | */ | |
| 46 | struct io_pkt { | |
| 47 | __u64 sector; | |
| 48 | __u64 nbytes; | |
| 49 | __u32 rw; | |
| 50 | }; | |
| 51 | ||
| 52 | /* | |
| 53 | * Shorthand notion of a bunch of IOs | |
| 54 | * | |
| 55 | * @hdr: Header describing stall and how many IO packets follow | |
| 56 | * @pkts: Individual IOs are described here | |
| 57 | */ | |
| 58 | struct io_bunch { | |
| 59 | struct io_bunch_hdr hdr; | |
| 60 | struct io_pkt pkts[BT_MAX_PKTS]; | |
| 61 | }; | |
| 62 | ||
| 63 | /* | |
| 64 | * Header for each recorded file | |
| 65 | * | |
| 66 | * @version: Version information | |
| 67 | * @genesis: Time stamp for earliest bunch | |
| 68 | * @nbunches: Number of bunches put into the file | |
| 69 | * @total_pkts: Number of packets to be processed | |
| 70 | */ | |
| 71 | struct io_file_hdr { | |
| 72 | __u64 version; | |
| 73 | __u64 genesis; | |
| 74 | __u64 nbunches; | |
| 75 | __u64 total_pkts; | |
| 76 | }; | |
| 77 | ||
| 78 | static inline __u64 mk_btversion(int mjr, int mnr, int sub) | |
| 79 | { | |
| 80 | return ((mjr & 0xff) << 16) | ((mnr & 0xff) << 8) | (sub & 0xff); | |
| 81 | } | |
| 82 | ||
| 83 | static inline void get_btversion(__u64 version, int *mjr, int *mnr, int *sub) | |
| 84 | { | |
| 85 | *mjr = (int)((version >> 16) & 0xff); | |
| 86 | *mnr = (int)((version >> 8) & 0xff); | |
| 87 | *sub = (int)((version >> 0) & 0xff); | |
| 88 | } | |
| 89 | ||
| 90 | static char my_btversion[] = "0.9.3"; | |
| 91 | static int btver_mjr = 0; | |
| 92 | static int btver_mnr = 9; | |
| 93 | static int btver_sub = 3; | |
| 94 | ||
| 95 | #endif |