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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 | ||
57425a8a AB |
90 | static char my_btversion[] = "1.0.0"; |
91 | static int btver_mjr = 1; | |
92 | static int btver_mnr = 0; | |
93 | static int btver_sub = 0; | |
d47a3fec AB |
94 | |
95 | #endif |