Blame view
include/linux/blktrace_api.h
7.59 KB
2056a782f [PATCH] Block que... |
1 2 |
#ifndef BLKTRACE_H #define BLKTRACE_H |
4502b80e4 headers_check fix... |
3 |
#include <linux/types.h> |
c0ddffa84 include blktrace_... |
4 |
#ifdef __KERNEL__ |
2056a782f [PATCH] Block que... |
5 6 |
#include <linux/blkdev.h> #include <linux/relay.h> |
62c2a7d96 block: push BKL i... |
7 |
#include <linux/compat.h> |
c0ddffa84 include blktrace_... |
8 |
#endif |
2056a782f [PATCH] Block que... |
9 10 11 12 13 14 15 |
/* * Trace categories */ enum blktrace_cat { BLK_TC_READ = 1 << 0, /* reads */ BLK_TC_WRITE = 1 << 1, /* writes */ |
c09c47cae blktrace: add FLU... |
16 |
BLK_TC_FLUSH = 1 << 2, /* flush */ |
fc0a75ce4 [PATCH] blktrace:... |
17 |
BLK_TC_SYNC = 1 << 3, /* sync IO */ |
93dbb3935 block: fix bad de... |
18 |
BLK_TC_SYNCIO = BLK_TC_SYNC, |
2056a782f [PATCH] Block que... |
19 20 21 22 23 24 25 |
BLK_TC_QUEUE = 1 << 4, /* queueing/merging */ BLK_TC_REQUEUE = 1 << 5, /* requeueing */ BLK_TC_ISSUE = 1 << 6, /* issue */ BLK_TC_COMPLETE = 1 << 7, /* completions */ BLK_TC_FS = 1 << 8, /* fs requests */ BLK_TC_PC = 1 << 9, /* pc requests */ BLK_TC_NOTIFY = 1 << 10, /* special message */ |
40359ccb8 [PATCH] blktrace:... |
26 |
BLK_TC_AHEAD = 1 << 11, /* readahead */ |
7457e6e2d [PATCH] blktrace:... |
27 |
BLK_TC_META = 1 << 12, /* metadata */ |
27b29e86b blktrace: support... |
28 |
BLK_TC_DISCARD = 1 << 13, /* discard requests */ |
756f82431 blktrace: add sup... |
29 |
BLK_TC_DRV_DATA = 1 << 14, /* binary per-driver data */ |
c09c47cae blktrace: add FLU... |
30 |
BLK_TC_FUA = 1 << 15, /* fua requests */ |
2056a782f [PATCH] Block que... |
31 |
|
c09c47cae blktrace: add FLU... |
32 |
BLK_TC_END = 1 << 15, /* we've run out of bits! */ |
2056a782f [PATCH] Block que... |
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 |
}; #define BLK_TC_SHIFT (16) #define BLK_TC_ACT(act) ((act) << BLK_TC_SHIFT) /* * Basic trace actions */ enum blktrace_act { __BLK_TA_QUEUE = 1, /* queued */ __BLK_TA_BACKMERGE, /* back merged to existing rq */ __BLK_TA_FRONTMERGE, /* front merge to existing rq */ __BLK_TA_GETRQ, /* allocated new request */ __BLK_TA_SLEEPRQ, /* sleeping on rq allocation */ __BLK_TA_REQUEUE, /* request requeued */ __BLK_TA_ISSUE, /* sent to driver */ __BLK_TA_COMPLETE, /* completed by driver */ __BLK_TA_PLUG, /* queue was plugged */ __BLK_TA_UNPLUG_IO, /* queue was unplugged by io */ __BLK_TA_UNPLUG_TIMER, /* queue was unplugged by timer */ __BLK_TA_INSERT, /* insert request */ __BLK_TA_SPLIT, /* bio was split */ __BLK_TA_BOUNCE, /* bio was bounced */ __BLK_TA_REMAP, /* bio was remapped */ |
11914a53d block: Add interf... |
57 |
__BLK_TA_ABORT, /* request aborted */ |
756f82431 blktrace: add sup... |
58 |
__BLK_TA_DRV_DATA, /* driver-specific binary data */ |
2056a782f [PATCH] Block que... |
59 60 61 |
}; /* |
be1c63411 [PATCH] blktrace:... |
62 63 64 65 66 |
* Notify events. */ enum blktrace_notify { __BLK_TN_PROCESS = 0, /* establish pid/name mapping */ __BLK_TN_TIMESTAMP, /* include system clock */ |
9d5f09a42 Added in MESSAGE ... |
67 |
__BLK_TN_MESSAGE, /* Character string message */ |
be1c63411 [PATCH] blktrace:... |
68 69 70 71 |
}; /* |
2056a782f [PATCH] Block que... |
72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 |
* Trace actions in full. Additionally, read or write is masked */ #define BLK_TA_QUEUE (__BLK_TA_QUEUE | BLK_TC_ACT(BLK_TC_QUEUE)) #define BLK_TA_BACKMERGE (__BLK_TA_BACKMERGE | BLK_TC_ACT(BLK_TC_QUEUE)) #define BLK_TA_FRONTMERGE (__BLK_TA_FRONTMERGE | BLK_TC_ACT(BLK_TC_QUEUE)) #define BLK_TA_GETRQ (__BLK_TA_GETRQ | BLK_TC_ACT(BLK_TC_QUEUE)) #define BLK_TA_SLEEPRQ (__BLK_TA_SLEEPRQ | BLK_TC_ACT(BLK_TC_QUEUE)) #define BLK_TA_REQUEUE (__BLK_TA_REQUEUE | BLK_TC_ACT(BLK_TC_REQUEUE)) #define BLK_TA_ISSUE (__BLK_TA_ISSUE | BLK_TC_ACT(BLK_TC_ISSUE)) #define BLK_TA_COMPLETE (__BLK_TA_COMPLETE| BLK_TC_ACT(BLK_TC_COMPLETE)) #define BLK_TA_PLUG (__BLK_TA_PLUG | BLK_TC_ACT(BLK_TC_QUEUE)) #define BLK_TA_UNPLUG_IO (__BLK_TA_UNPLUG_IO | BLK_TC_ACT(BLK_TC_QUEUE)) #define BLK_TA_UNPLUG_TIMER (__BLK_TA_UNPLUG_TIMER | BLK_TC_ACT(BLK_TC_QUEUE)) #define BLK_TA_INSERT (__BLK_TA_INSERT | BLK_TC_ACT(BLK_TC_QUEUE)) #define BLK_TA_SPLIT (__BLK_TA_SPLIT) #define BLK_TA_BOUNCE (__BLK_TA_BOUNCE) #define BLK_TA_REMAP (__BLK_TA_REMAP | BLK_TC_ACT(BLK_TC_QUEUE)) |
11914a53d block: Add interf... |
89 |
#define BLK_TA_ABORT (__BLK_TA_ABORT | BLK_TC_ACT(BLK_TC_QUEUE)) |
756f82431 blktrace: add sup... |
90 |
#define BLK_TA_DRV_DATA (__BLK_TA_DRV_DATA | BLK_TC_ACT(BLK_TC_DRV_DATA)) |
2056a782f [PATCH] Block que... |
91 |
|
be1c63411 [PATCH] blktrace:... |
92 93 |
#define BLK_TN_PROCESS (__BLK_TN_PROCESS | BLK_TC_ACT(BLK_TC_NOTIFY)) #define BLK_TN_TIMESTAMP (__BLK_TN_TIMESTAMP | BLK_TC_ACT(BLK_TC_NOTIFY)) |
9d5f09a42 Added in MESSAGE ... |
94 |
#define BLK_TN_MESSAGE (__BLK_TN_MESSAGE | BLK_TC_ACT(BLK_TC_NOTIFY)) |
be1c63411 [PATCH] blktrace:... |
95 |
|
2056a782f [PATCH] Block que... |
96 97 98 99 100 101 102 |
#define BLK_IO_TRACE_MAGIC 0x65617400 #define BLK_IO_TRACE_VERSION 0x07 /* * The trace itself */ struct blk_io_trace { |
c0ddffa84 include blktrace_... |
103 104 105 106 107 108 109 110 111 112 113 |
__u32 magic; /* MAGIC << 8 | version */ __u32 sequence; /* event number */ __u64 time; /* in microseconds */ __u64 sector; /* disk offset */ __u32 bytes; /* transfer length */ __u32 action; /* what happened */ __u32 pid; /* who did it */ __u32 device; /* device number */ __u32 cpu; /* on what cpu did it happen */ __u16 error; /* completion error */ __u16 pdu_len; /* length of data after this trace */ |
2056a782f [PATCH] Block que... |
114 115 116 117 118 119 |
}; /* * The remap event */ struct blk_io_trace_remap { |
c7149d6bc Fix remap handlin... |
120 |
__be32 device_from; |
a42aaa3bb blktrace: correct... |
121 122 |
__be32 device_to; __be64 sector_from; |
2056a782f [PATCH] Block que... |
123 124 125 126 127 128 129 |
}; enum { Blktrace_setup = 1, Blktrace_running, Blktrace_stopped, }; |
0497b345e blktrace: use BLK... |
130 |
#define BLKTRACE_BDEV_SIZE 32 |
c0ddffa84 include blktrace_... |
131 132 133 134 |
/* * User setup structure passed with BLKTRACESTART */ struct blk_user_trace_setup { |
0497b345e blktrace: use BLK... |
135 |
char name[BLKTRACE_BDEV_SIZE]; /* output */ |
c0ddffa84 include blktrace_... |
136 137 138 139 140 141 142 143 144 145 |
__u16 act_mask; /* input */ __u32 buf_size; /* input */ __u32 buf_nr; /* input */ __u64 start_lba; __u64 end_lba; __u32 pid; }; #ifdef __KERNEL__ #if defined(CONFIG_BLK_DEV_IO_TRACE) |
157f9c00e tracing/blktrace:... |
146 147 |
#include <linux/sysfs.h> |
2056a782f [PATCH] Block que... |
148 149 150 |
struct blk_trace { int trace_state; struct rchan *rchan; |
43cf38eb5 percpu: add __per... |
151 152 |
unsigned long __percpu *sequence; unsigned char __percpu *msg_data; |
2056a782f [PATCH] Block que... |
153 154 155 156 157 158 159 |
u16 act_mask; u64 start_lba; u64 end_lba; u32 pid; u32 dev; struct dentry *dir; struct dentry *dropped_file; |
02c62304e Added in user-inj... |
160 |
struct dentry *msg_file; |
2056a782f [PATCH] Block que... |
161 162 |
atomic_t dropped; }; |
2056a782f [PATCH] Block que... |
163 |
extern int blk_trace_ioctl(struct block_device *, unsigned, char __user *); |
165125e1e [BLOCK] Get rid o... |
164 |
extern void blk_trace_shutdown(struct request_queue *); |
d0deef5b1 blktrace: support... |
165 166 167 |
extern int do_blk_trace_setup(struct request_queue *q, char *name, dev_t dev, struct block_device *bdev, struct blk_user_trace_setup *buts); |
b9075fa96 treewide: use __p... |
168 |
extern __printf(2, 3) |
08e8138ad block: Add __attr... |
169 |
void __trace_note_message(struct blk_trace *, const char *fmt, ...); |
171044d44 compat_ioctl: han... |
170 |
|
9d5f09a42 Added in MESSAGE ... |
171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 |
/** * blk_add_trace_msg - Add a (simple) message to the blktrace stream * @q: queue the io is for * @fmt: format to print message in * args... Variable argument list for format * * Description: * Records a (simple) message onto the blktrace stream. * * NOTE: BLK_TN_MAX_MSG characters are output at most. * NOTE: Can not use 'static inline' due to presence of var args... * **/ #define blk_add_trace_msg(q, fmt, ...) \ do { \ struct blk_trace *bt = (q)->blk_trace; \ if (unlikely(bt)) \ __trace_note_message(bt, fmt, ##__VA_ARGS__); \ } while (0) |
64565911c block: make blktr... |
190 |
#define BLK_TN_MAX_MSG 128 |
2056a782f [PATCH] Block que... |
191 |
|
5f3ea37c7 blktrace: port to... |
192 193 |
extern void blk_add_driver_data(struct request_queue *q, struct request *rq, void *data, size_t len); |
7da975a23 Fix blktrace comp... |
194 |
extern int blk_trace_setup(struct request_queue *q, char *name, dev_t dev, |
d0deef5b1 blktrace: support... |
195 |
struct block_device *bdev, |
6da127ad0 blktrace: Add blk... |
196 |
char __user *arg); |
7da975a23 Fix blktrace comp... |
197 198 |
extern int blk_trace_startstop(struct request_queue *q, int start); extern int blk_trace_remove(struct request_queue *q); |
48c0d4d4c Add missing blk_t... |
199 |
extern void blk_trace_remove_sysfs(struct device *dev); |
1d54ad6da blktrace: add tra... |
200 |
extern int blk_trace_init_sysfs(struct device *dev); |
6da127ad0 blktrace: Add blk... |
201 |
|
157f9c00e tracing/blktrace:... |
202 |
extern struct attribute_group blk_trace_attr_group; |
2056a782f [PATCH] Block que... |
203 |
#else /* !CONFIG_BLK_DEV_IO_TRACE */ |
d0deef5b1 blktrace: support... |
204 205 206 207 208 209 210 211 |
# define blk_trace_ioctl(bdev, cmd, arg) (-ENOTTY) # define blk_trace_shutdown(q) do { } while (0) # define do_blk_trace_setup(q, name, dev, bdev, buts) (-ENOTTY) # define blk_add_driver_data(q, rq, data, len) do {} while (0) # define blk_trace_setup(q, name, dev, bdev, arg) (-ENOTTY) # define blk_trace_startstop(q, start) (-ENOTTY) # define blk_trace_remove(q) (-ENOTTY) # define blk_add_trace_msg(q, fmt, ...) do { } while (0) |
b0da3f0da Add a tracepoint ... |
212 |
# define blk_trace_remove_sysfs(dev) do { } while (0) |
1d54ad6da blktrace: add tra... |
213 214 215 216 |
static inline int blk_trace_init_sysfs(struct device *dev) { return 0; } |
2056a782f [PATCH] Block que... |
217 |
#endif /* CONFIG_BLK_DEV_IO_TRACE */ |
d0deef5b1 blktrace: support... |
218 |
|
2669b19fa block: fix for bl... |
219 220 221 222 223 224 225 226 227 228 229 230 231 232 |
#ifdef CONFIG_COMPAT struct compat_blk_user_trace_setup { char name[32]; u16 act_mask; u32 buf_size; u32 buf_nr; compat_u64 start_lba; compat_u64 end_lba; u32 pid; }; #define BLKTRACESETUP32 _IOWR(0x12, 115, struct compat_blk_user_trace_setup) #endif |
f1db457ce tracing/events: c... |
233 |
#if defined(CONFIG_EVENT_TRACING) && defined(CONFIG_BLOCK) |
55782138e tracing/events: c... |
234 235 236 |
static inline int blk_cmd_buf_len(struct request *rq) { |
33659ebba block: remove wra... |
237 |
return (rq->cmd_type == REQ_TYPE_BLOCK_PC) ? rq->cmd_len * 3 : 1; |
55782138e tracing/events: c... |
238 239 240 241 |
} extern void blk_dump_cmd(char *buf, struct request *rq); extern void blk_fill_rwbs(char *rwbs, u32 rw, int bytes); |
55782138e tracing/events: c... |
242 |
|
f1db457ce tracing/events: c... |
243 |
#endif /* CONFIG_EVENT_TRACING && CONFIG_BLOCK */ |
55782138e tracing/events: c... |
244 |
|
171044d44 compat_ioctl: han... |
245 |
#endif /* __KERNEL__ */ |
2056a782f [PATCH] Block que... |
246 |
#endif |