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-rw-r--r--include/linux/blktrace_api.h142
1 files changed, 1 insertions, 141 deletions
diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h
index 4d1a0748eaf8..7c2e030e72f1 100644
--- a/include/linux/blktrace_api.h
+++ b/include/linux/blktrace_api.h
@@ -1,150 +1,11 @@
1#ifndef BLKTRACE_H 1#ifndef BLKTRACE_H
2#define BLKTRACE_H 2#define BLKTRACE_H
3 3
4#include <linux/types.h>
5#ifdef __KERNEL__
6#include <linux/blkdev.h> 4#include <linux/blkdev.h>
7#include <linux/relay.h> 5#include <linux/relay.h>
8#include <linux/compat.h> 6#include <linux/compat.h>
9#endif 7#include <uapi/linux/blktrace_api.h>
10
11/*
12 * Trace categories
13 */
14enum blktrace_cat {
15 BLK_TC_READ = 1 << 0, /* reads */
16 BLK_TC_WRITE = 1 << 1, /* writes */
17 BLK_TC_FLUSH = 1 << 2, /* flush */
18 BLK_TC_SYNC = 1 << 3, /* sync IO */
19 BLK_TC_SYNCIO = BLK_TC_SYNC,
20 BLK_TC_QUEUE = 1 << 4, /* queueing/merging */
21 BLK_TC_REQUEUE = 1 << 5, /* requeueing */
22 BLK_TC_ISSUE = 1 << 6, /* issue */
23 BLK_TC_COMPLETE = 1 << 7, /* completions */
24 BLK_TC_FS = 1 << 8, /* fs requests */
25 BLK_TC_PC = 1 << 9, /* pc requests */
26 BLK_TC_NOTIFY = 1 << 10, /* special message */
27 BLK_TC_AHEAD = 1 << 11, /* readahead */
28 BLK_TC_META = 1 << 12, /* metadata */
29 BLK_TC_DISCARD = 1 << 13, /* discard requests */
30 BLK_TC_DRV_DATA = 1 << 14, /* binary per-driver data */
31 BLK_TC_FUA = 1 << 15, /* fua requests */
32
33 BLK_TC_END = 1 << 15, /* we've run out of bits! */
34};
35
36#define BLK_TC_SHIFT (16)
37#define BLK_TC_ACT(act) ((act) << BLK_TC_SHIFT)
38
39/*
40 * Basic trace actions
41 */
42enum blktrace_act {
43 __BLK_TA_QUEUE = 1, /* queued */
44 __BLK_TA_BACKMERGE, /* back merged to existing rq */
45 __BLK_TA_FRONTMERGE, /* front merge to existing rq */
46 __BLK_TA_GETRQ, /* allocated new request */
47 __BLK_TA_SLEEPRQ, /* sleeping on rq allocation */
48 __BLK_TA_REQUEUE, /* request requeued */
49 __BLK_TA_ISSUE, /* sent to driver */
50 __BLK_TA_COMPLETE, /* completed by driver */
51 __BLK_TA_PLUG, /* queue was plugged */
52 __BLK_TA_UNPLUG_IO, /* queue was unplugged by io */
53 __BLK_TA_UNPLUG_TIMER, /* queue was unplugged by timer */
54 __BLK_TA_INSERT, /* insert request */
55 __BLK_TA_SPLIT, /* bio was split */
56 __BLK_TA_BOUNCE, /* bio was bounced */
57 __BLK_TA_REMAP, /* bio was remapped */
58 __BLK_TA_ABORT, /* request aborted */
59 __BLK_TA_DRV_DATA, /* driver-specific binary data */
60};
61
62/*
63 * Notify events.
64 */
65enum blktrace_notify {
66 __BLK_TN_PROCESS = 0, /* establish pid/name mapping */
67 __BLK_TN_TIMESTAMP, /* include system clock */
68 __BLK_TN_MESSAGE, /* Character string message */
69};
70
71
72/*
73 * Trace actions in full. Additionally, read or write is masked
74 */
75#define BLK_TA_QUEUE (__BLK_TA_QUEUE | BLK_TC_ACT(BLK_TC_QUEUE))
76#define BLK_TA_BACKMERGE (__BLK_TA_BACKMERGE | BLK_TC_ACT(BLK_TC_QUEUE))
77#define BLK_TA_FRONTMERGE (__BLK_TA_FRONTMERGE | BLK_TC_ACT(BLK_TC_QUEUE))
78#define BLK_TA_GETRQ (__BLK_TA_GETRQ | BLK_TC_ACT(BLK_TC_QUEUE))
79#define BLK_TA_SLEEPRQ (__BLK_TA_SLEEPRQ | BLK_TC_ACT(BLK_TC_QUEUE))
80#define BLK_TA_REQUEUE (__BLK_TA_REQUEUE | BLK_TC_ACT(BLK_TC_REQUEUE))
81#define BLK_TA_ISSUE (__BLK_TA_ISSUE | BLK_TC_ACT(BLK_TC_ISSUE))
82#define BLK_TA_COMPLETE (__BLK_TA_COMPLETE| BLK_TC_ACT(BLK_TC_COMPLETE))
83#define BLK_TA_PLUG (__BLK_TA_PLUG | BLK_TC_ACT(BLK_TC_QUEUE))
84#define BLK_TA_UNPLUG_IO (__BLK_TA_UNPLUG_IO | BLK_TC_ACT(BLK_TC_QUEUE))
85#define BLK_TA_UNPLUG_TIMER (__BLK_TA_UNPLUG_TIMER | BLK_TC_ACT(BLK_TC_QUEUE))
86#define BLK_TA_INSERT (__BLK_TA_INSERT | BLK_TC_ACT(BLK_TC_QUEUE))
87#define BLK_TA_SPLIT (__BLK_TA_SPLIT)
88#define BLK_TA_BOUNCE (__BLK_TA_BOUNCE)
89#define BLK_TA_REMAP (__BLK_TA_REMAP | BLK_TC_ACT(BLK_TC_QUEUE))
90#define BLK_TA_ABORT (__BLK_TA_ABORT | BLK_TC_ACT(BLK_TC_QUEUE))
91#define BLK_TA_DRV_DATA (__BLK_TA_DRV_DATA | BLK_TC_ACT(BLK_TC_DRV_DATA))
92
93#define BLK_TN_PROCESS (__BLK_TN_PROCESS | BLK_TC_ACT(BLK_TC_NOTIFY))
94#define BLK_TN_TIMESTAMP (__BLK_TN_TIMESTAMP | BLK_TC_ACT(BLK_TC_NOTIFY))
95#define BLK_TN_MESSAGE (__BLK_TN_MESSAGE | BLK_TC_ACT(BLK_TC_NOTIFY))
96
97#define BLK_IO_TRACE_MAGIC 0x65617400
98#define BLK_IO_TRACE_VERSION 0x07
99
100/*
101 * The trace itself
102 */
103struct blk_io_trace {
104 __u32 magic; /* MAGIC << 8 | version */
105 __u32 sequence; /* event number */
106 __u64 time; /* in microseconds */
107 __u64 sector; /* disk offset */
108 __u32 bytes; /* transfer length */
109 __u32 action; /* what happened */
110 __u32 pid; /* who did it */
111 __u32 device; /* device number */
112 __u32 cpu; /* on what cpu did it happen */
113 __u16 error; /* completion error */
114 __u16 pdu_len; /* length of data after this trace */
115};
116
117/*
118 * The remap event
119 */
120struct blk_io_trace_remap {
121 __be32 device_from;
122 __be32 device_to;
123 __be64 sector_from;
124};
125
126enum {
127 Blktrace_setup = 1,
128 Blktrace_running,
129 Blktrace_stopped,
130};
131
132#define BLKTRACE_BDEV_SIZE 32
133
134/*
135 * User setup structure passed with BLKTRACESTART
136 */
137struct blk_user_trace_setup {
138 char name[BLKTRACE_BDEV_SIZE]; /* output */
139 __u16 act_mask; /* input */
140 __u32 buf_size; /* input */
141 __u32 buf_nr; /* input */
142 __u64 start_lba;
143 __u64 end_lba;
144 __u32 pid;
145};
146 8
147#ifdef __KERNEL__
148#if defined(CONFIG_BLK_DEV_IO_TRACE) 9#if defined(CONFIG_BLK_DEV_IO_TRACE)
149 10
150#include <linux/sysfs.h> 11#include <linux/sysfs.h>
@@ -250,5 +111,4 @@ extern void blk_fill_rwbs(char *rwbs, u32 rw, int bytes);
250 111
251#endif /* CONFIG_EVENT_TRACING && CONFIG_BLOCK */ 112#endif /* CONFIG_EVENT_TRACING && CONFIG_BLOCK */
252 113
253#endif /* __KERNEL__ */
254#endif 114#endif
generated by cgit v1.2.2 (git 2.25.0) at 2025-03-07 15:56:13 -0500