1#ifndef _UAPIBLKTRACE_H
2#define _UAPIBLKTRACE_H
3
4#include <linux/types.h>
5
6
7
8
9enum blktrace_cat {
10 BLK_TC_READ = 1 << 0,
11 BLK_TC_WRITE = 1 << 1,
12 BLK_TC_FLUSH = 1 << 2,
13 BLK_TC_SYNC = 1 << 3,
14 BLK_TC_SYNCIO = BLK_TC_SYNC,
15 BLK_TC_QUEUE = 1 << 4,
16 BLK_TC_REQUEUE = 1 << 5,
17 BLK_TC_ISSUE = 1 << 6,
18 BLK_TC_COMPLETE = 1 << 7,
19 BLK_TC_FS = 1 << 8,
20 BLK_TC_PC = 1 << 9,
21 BLK_TC_NOTIFY = 1 << 10,
22 BLK_TC_AHEAD = 1 << 11,
23 BLK_TC_META = 1 << 12,
24 BLK_TC_DISCARD = 1 << 13,
25 BLK_TC_DRV_DATA = 1 << 14,
26 BLK_TC_FUA = 1 << 15,
27
28 BLK_TC_END = 1 << 15,
29};
30
31#define BLK_TC_SHIFT (16)
32#define BLK_TC_ACT(act) ((act) << BLK_TC_SHIFT)
33
34
35
36
37enum blktrace_act {
38 __BLK_TA_QUEUE = 1,
39 __BLK_TA_BACKMERGE,
40 __BLK_TA_FRONTMERGE,
41 __BLK_TA_GETRQ,
42 __BLK_TA_SLEEPRQ,
43 __BLK_TA_REQUEUE,
44 __BLK_TA_ISSUE,
45 __BLK_TA_COMPLETE,
46 __BLK_TA_PLUG,
47 __BLK_TA_UNPLUG_IO,
48 __BLK_TA_UNPLUG_TIMER,
49 __BLK_TA_INSERT,
50 __BLK_TA_SPLIT,
51 __BLK_TA_BOUNCE,
52 __BLK_TA_REMAP,
53 __BLK_TA_ABORT,
54 __BLK_TA_DRV_DATA,
55};
56
57
58
59
60enum blktrace_notify {
61 __BLK_TN_PROCESS = 0,
62 __BLK_TN_TIMESTAMP,
63 __BLK_TN_MESSAGE,
64};
65
66
67
68
69
70#define BLK_TA_QUEUE (__BLK_TA_QUEUE | BLK_TC_ACT(BLK_TC_QUEUE))
71#define BLK_TA_BACKMERGE (__BLK_TA_BACKMERGE | BLK_TC_ACT(BLK_TC_QUEUE))
72#define BLK_TA_FRONTMERGE (__BLK_TA_FRONTMERGE | BLK_TC_ACT(BLK_TC_QUEUE))
73#define BLK_TA_GETRQ (__BLK_TA_GETRQ | BLK_TC_ACT(BLK_TC_QUEUE))
74#define BLK_TA_SLEEPRQ (__BLK_TA_SLEEPRQ | BLK_TC_ACT(BLK_TC_QUEUE))
75#define BLK_TA_REQUEUE (__BLK_TA_REQUEUE | BLK_TC_ACT(BLK_TC_REQUEUE))
76#define BLK_TA_ISSUE (__BLK_TA_ISSUE | BLK_TC_ACT(BLK_TC_ISSUE))
77#define BLK_TA_COMPLETE (__BLK_TA_COMPLETE| BLK_TC_ACT(BLK_TC_COMPLETE))
78#define BLK_TA_PLUG (__BLK_TA_PLUG | BLK_TC_ACT(BLK_TC_QUEUE))
79#define BLK_TA_UNPLUG_IO (__BLK_TA_UNPLUG_IO | BLK_TC_ACT(BLK_TC_QUEUE))
80#define BLK_TA_UNPLUG_TIMER (__BLK_TA_UNPLUG_TIMER | BLK_TC_ACT(BLK_TC_QUEUE))
81#define BLK_TA_INSERT (__BLK_TA_INSERT | BLK_TC_ACT(BLK_TC_QUEUE))
82#define BLK_TA_SPLIT (__BLK_TA_SPLIT)
83#define BLK_TA_BOUNCE (__BLK_TA_BOUNCE)
84#define BLK_TA_REMAP (__BLK_TA_REMAP | BLK_TC_ACT(BLK_TC_QUEUE))
85#define BLK_TA_ABORT (__BLK_TA_ABORT | BLK_TC_ACT(BLK_TC_QUEUE))
86#define BLK_TA_DRV_DATA (__BLK_TA_DRV_DATA | BLK_TC_ACT(BLK_TC_DRV_DATA))
87
88#define BLK_TN_PROCESS (__BLK_TN_PROCESS | BLK_TC_ACT(BLK_TC_NOTIFY))
89#define BLK_TN_TIMESTAMP (__BLK_TN_TIMESTAMP | BLK_TC_ACT(BLK_TC_NOTIFY))
90#define BLK_TN_MESSAGE (__BLK_TN_MESSAGE | BLK_TC_ACT(BLK_TC_NOTIFY))
91
92#define BLK_IO_TRACE_MAGIC 0x65617400
93#define BLK_IO_TRACE_VERSION 0x07
94
95
96
97
98struct blk_io_trace {
99 __u32 magic;
100 __u32 sequence;
101 __u64 time;
102 __u64 sector;
103 __u32 bytes;
104 __u32 action;
105 __u32 pid;
106 __u32 device;
107 __u32 cpu;
108 __u16 error;
109 __u16 pdu_len;
110};
111
112
113
114
115struct blk_io_trace_remap {
116 __be32 device_from;
117 __be32 device_to;
118 __be64 sector_from;
119};
120
121enum {
122 Blktrace_setup = 1,
123 Blktrace_running,
124 Blktrace_stopped,
125};
126
127#define BLKTRACE_BDEV_SIZE 32
128
129
130
131
132struct blk_user_trace_setup {
133 char name[BLKTRACE_BDEV_SIZE];
134 __u16 act_mask;
135 __u32 buf_size;
136 __u32 buf_nr;
137 __u64 start_lba;
138 __u64 end_lba;
139 __u32 pid;
140};
141
142#endif
143