Commit | Line | Data |
---|---|---|
71d5d4c9 JA |
1 | /* |
2 | * This file contains format parsing code for blkparse, allowing you to | |
3 | * customize the individual action format and generel output format. | |
4 | */ | |
5 | #include <stdio.h> | |
6 | #include <string.h> | |
7 | #include <stdlib.h> | |
8 | #include <unistd.h> | |
9 | #include <ctype.h> | |
7bd4fd0a | 10 | #include <time.h> |
71d5d4c9 JA |
11 | |
12 | #include "blktrace.h" | |
13 | ||
4c446dc0 | 14 | #define VALID_SPECS "ABCDFGIMPQRSTUWX" |
71d5d4c9 JA |
15 | |
16 | #define HEADER "%D %2c %8s %5T.%9t %5p %2a %3d " | |
17 | ||
18 | static char *override_format[256]; | |
19 | ||
20 | static inline int valid_spec(int spec) | |
21 | { | |
22 | return strchr(VALID_SPECS, spec) != NULL; | |
23 | } | |
24 | ||
e820abd7 | 25 | void set_all_format_specs(char *option) |
71d5d4c9 JA |
26 | { |
27 | char *p; | |
28 | ||
29 | for (p = VALID_SPECS; *p; p++) | |
30 | if (override_format[(int)(*p)] == NULL) | |
e820abd7 | 31 | override_format[(int)(*p)] = strdup(option); |
71d5d4c9 JA |
32 | } |
33 | ||
e820abd7 | 34 | int add_format_spec(char *option) |
71d5d4c9 JA |
35 | { |
36 | int spec = optarg[0]; | |
37 | ||
38 | if (!valid_spec(spec)) { | |
39 | fprintf(stderr,"Bad format specifier %c\n", spec); | |
40 | return 1; | |
41 | } | |
42 | if (optarg[1] != ',') { | |
e820abd7 | 43 | fprintf(stderr,"Bad format specifier - need ',' %s\n", option); |
71d5d4c9 JA |
44 | return 1; |
45 | } | |
e820abd7 | 46 | option += 2; |
71d5d4c9 | 47 | |
0ac4c20e | 48 | override_format[spec] = strdup(option); |
71d5d4c9 JA |
49 | |
50 | return 0; | |
51 | } | |
52 | ||
768277cc JA |
53 | static inline void fill_rwbs(char *rwbs, struct blk_io_trace *t) |
54 | { | |
55 | int w = t->action & BLK_TC_ACT(BLK_TC_WRITE); | |
f86990ed | 56 | int a = t->action & BLK_TC_ACT(BLK_TC_AHEAD); |
768277cc JA |
57 | int b = t->action & BLK_TC_ACT(BLK_TC_BARRIER); |
58 | int s = t->action & BLK_TC_ACT(BLK_TC_SYNC); | |
711e4d25 | 59 | int m = t->action & BLK_TC_ACT(BLK_TC_META); |
37081bf5 | 60 | int d = t->action & BLK_TC_ACT(BLK_TC_DISCARD); |
768277cc JA |
61 | int i = 0; |
62 | ||
37081bf5 DW |
63 | if (d) |
64 | rwbs[i++] = 'D'; | |
65 | else if (w) | |
768277cc | 66 | rwbs[i++] = 'W'; |
d57450af | 67 | else if (t->bytes) |
768277cc | 68 | rwbs[i++] = 'R'; |
d57450af JA |
69 | else |
70 | rwbs[i++] = 'N'; | |
f86990ed NS |
71 | if (a) |
72 | rwbs[i++] = 'A'; | |
768277cc JA |
73 | if (b) |
74 | rwbs[i++] = 'B'; | |
75 | if (s) | |
76 | rwbs[i++] = 'S'; | |
711e4d25 JA |
77 | if (m) |
78 | rwbs[i++] = 'M'; | |
768277cc JA |
79 | |
80 | rwbs[i] = '\0'; | |
81 | } | |
82 | ||
7bd4fd0a OK |
83 | static const char * |
84 | print_time(unsigned long long timestamp) | |
85 | { | |
86 | static char timebuf[128]; | |
87 | struct tm *tm; | |
88 | time_t sec; | |
89 | unsigned long nsec; | |
90 | ||
91 | sec = abs_start_time.tv_sec + SECONDS(timestamp); | |
92 | nsec = abs_start_time.tv_nsec + NANO_SECONDS(timestamp); | |
93 | if (nsec >= 1000000000) { | |
94 | nsec -= 1000000000; | |
95 | sec += 1; | |
96 | } | |
97 | ||
98 | tm = localtime(&sec); | |
99 | snprintf(timebuf, sizeof(timebuf), | |
100 | "%02u:%02u:%02u.%06lu", | |
101 | tm->tm_hour, | |
102 | tm->tm_min, | |
103 | tm->tm_sec, | |
104 | nsec / 1000); | |
105 | return timebuf; | |
106 | } | |
107 | ||
63756b50 | 108 | static inline int pdu_rest_is_zero(unsigned char *pdu, int len) |
1d6376a5 | 109 | { |
63756b50 | 110 | static char zero[4096]; |
1d6376a5 | 111 | |
63756b50 | 112 | return !memcmp(pdu, zero, len); |
1d6376a5 JA |
113 | } |
114 | ||
768277cc JA |
115 | static char *dump_pdu(unsigned char *pdu_buf, int pdu_len) |
116 | { | |
117 | static char p[4096]; | |
118 | int i, len; | |
119 | ||
120 | if (!pdu_buf || !pdu_len) | |
121 | return NULL; | |
122 | ||
123 | for (len = 0, i = 0; i < pdu_len; i++) { | |
124 | if (i) | |
125 | len += sprintf(p + len, " "); | |
126 | ||
127 | len += sprintf(p + len, "%02x", pdu_buf[i]); | |
1d6376a5 JA |
128 | |
129 | /* | |
130 | * usually dump for cdb dumps where we can see lots of | |
131 | * zeroes, stop when the rest is just zeroes and indicate | |
132 | * so with a .. appended | |
133 | */ | |
134 | if (!pdu_buf[i] && pdu_rest_is_zero(pdu_buf + i, pdu_len - i)) { | |
135 | sprintf(p + len, " .."); | |
136 | break; | |
137 | } | |
768277cc JA |
138 | } |
139 | ||
140 | return p; | |
141 | } | |
142 | ||
a8f30e64 JA |
143 | #define pdu_start(t) (((void *) (t) + sizeof(struct blk_io_trace))) |
144 | ||
768277cc JA |
145 | static unsigned int get_pdu_int(struct blk_io_trace *t) |
146 | { | |
a8f30e64 | 147 | __u64 *val = pdu_start(t); |
768277cc JA |
148 | |
149 | return be64_to_cpu(*val); | |
150 | } | |
151 | ||
a8f30e64 JA |
152 | static void get_pdu_remap(struct blk_io_trace *t, struct blk_io_trace_remap *r) |
153 | { | |
154 | struct blk_io_trace_remap *__r = pdu_start(t); | |
663af819 | 155 | __u64 sector = __r->sector; |
a8f30e64 JA |
156 | |
157 | r->device = be32_to_cpu(__r->device); | |
97d13fb0 | 158 | r->device_from = be32_to_cpu(__r->device_from); |
663af819 | 159 | r->sector = be64_to_cpu(sector); |
a8f30e64 JA |
160 | } |
161 | ||
71d5d4c9 JA |
162 | static void print_field(char *act, struct per_cpu_info *pci, |
163 | struct blk_io_trace *t, unsigned long long elapsed, | |
164 | int pdu_len, unsigned char *pdu_buf, char field, | |
165 | int minus, int has_w, int width) | |
166 | { | |
167 | char format[64]; | |
168 | ||
169 | if (has_w) { | |
170 | if (minus) | |
171 | sprintf(format, "%%-%d", width); | |
172 | else | |
173 | sprintf(format, "%%%d", width); | |
174 | } else | |
175 | sprintf(format, "%%"); | |
176 | ||
177 | switch (field) { | |
178 | case 'a': | |
179 | fprintf(ofp, strcat(format, "s"), act); | |
180 | break; | |
181 | case 'c': | |
182 | fprintf(ofp, strcat(format, "d"), pci->cpu); | |
183 | break; | |
bfc70ad5 JA |
184 | case 'C': { |
185 | char *name = find_process_name(t->pid); | |
186 | ||
187 | fprintf(ofp, strcat(format, "s"), name); | |
71d5d4c9 | 188 | break; |
bfc70ad5 | 189 | } |
71d5d4c9 | 190 | case 'd': { |
711e4d25 | 191 | char rwbs[6]; |
768277cc JA |
192 | |
193 | fill_rwbs(rwbs, t); | |
71d5d4c9 JA |
194 | fprintf(ofp, strcat(format, "s"), rwbs); |
195 | break; | |
196 | } | |
197 | case 'D': /* format width ignored */ | |
198 | fprintf(ofp,"%3d,%-3d", MAJOR(t->device), MINOR(t->device)); | |
199 | break; | |
200 | case 'e': | |
201 | fprintf(ofp, strcat(format, "d"), t->error); | |
202 | break; | |
203 | case 'M': | |
204 | fprintf(ofp, strcat(format, "d"), MAJOR(t->device)); | |
205 | break; | |
206 | case 'm': | |
207 | fprintf(ofp, strcat(format, "d"), MINOR(t->device)); | |
208 | break; | |
209 | case 'n': | |
ae957cbc | 210 | fprintf(ofp, strcat(format, "u"), t_sec(t)); |
71d5d4c9 | 211 | break; |
1c8ca7b5 JA |
212 | case 'N': |
213 | fprintf(ofp, strcat(format, "u"), t->bytes); | |
214 | break; | |
71d5d4c9 JA |
215 | case 'p': |
216 | fprintf(ofp, strcat(format, "u"), t->pid); | |
217 | break; | |
768277cc JA |
218 | case 'P': { /* format width ignored */ |
219 | char *p = dump_pdu(pdu_buf, pdu_len); | |
220 | if (p) | |
221 | fprintf(ofp, "%s", p); | |
71d5d4c9 | 222 | break; |
768277cc | 223 | } |
71d5d4c9 JA |
224 | case 's': |
225 | fprintf(ofp, strcat(format, "ld"), t->sequence); | |
226 | break; | |
227 | case 'S': | |
228 | fprintf(ofp, strcat(format, "lu"), t->sector); | |
229 | break; | |
230 | case 't': | |
231 | sprintf(format, "%%0%dlu", has_w ? width : 9); | |
232 | fprintf(ofp, format, NANO_SECONDS(t->time)); | |
233 | break; | |
234 | case 'T': | |
235 | fprintf(ofp, strcat(format, "d"), SECONDS(t->time)); | |
236 | break; | |
237 | case 'u': | |
238 | if (elapsed == -1ULL) { | |
239 | fprintf(stderr, "Expecting elapsed value\n"); | |
240 | exit(1); | |
241 | } | |
242 | fprintf(ofp, strcat(format, "llu"), elapsed / 1000); | |
243 | break; | |
7bd4fd0a | 244 | case 'U': |
768277cc | 245 | fprintf(ofp, strcat(format, "u"), get_pdu_int(t)); |
71d5d4c9 | 246 | break; |
7bd4fd0a OK |
247 | case 'z': |
248 | fprintf(ofp, strcat(format, "s"), print_time(t->time)); | |
249 | break; | |
71d5d4c9 JA |
250 | default: |
251 | fprintf(ofp,strcat(format, "c"), field); | |
252 | break; | |
253 | } | |
254 | } | |
255 | ||
768277cc JA |
256 | static char *parse_field(char *act, struct per_cpu_info *pci, |
257 | struct blk_io_trace *t, unsigned long long elapsed, | |
258 | int pdu_len, unsigned char *pdu_buf, | |
71d5d4c9 JA |
259 | char *master_format) |
260 | { | |
261 | int minus = 0; | |
262 | int has_w = 0; | |
263 | int width = 0; | |
264 | char *p = master_format; | |
265 | ||
266 | if (*p == '-') { | |
267 | minus = 1; | |
268 | p++; | |
269 | } | |
270 | if (isdigit(*p)) { | |
271 | has_w = 1; | |
272 | do { | |
273 | width = (width * 10) + (*p++ - '0'); | |
274 | } while ((*p) && (isdigit(*p))); | |
275 | } | |
276 | if (*p) { | |
277 | print_field(act, pci, t, elapsed, pdu_len, pdu_buf, *p++, | |
278 | minus, has_w, width); | |
279 | } | |
280 | return p; | |
281 | } | |
282 | ||
768277cc JA |
283 | static void process_default(char *act, struct per_cpu_info *pci, |
284 | struct blk_io_trace *t, unsigned long long elapsed, | |
285 | int pdu_len, unsigned char *pdu_buf) | |
71d5d4c9 | 286 | { |
97d13fb0 | 287 | struct blk_io_trace_remap r = { .device = 0, }; |
711e4d25 | 288 | char rwbs[6]; |
bfc70ad5 | 289 | char *name; |
71d5d4c9 | 290 | |
768277cc JA |
291 | fill_rwbs(rwbs, t); |
292 | ||
293 | /* | |
294 | * The header is always the same | |
295 | */ | |
97d13fb0 AB |
296 | if (act[0] == 'A') { /* Remap */ |
297 | get_pdu_remap(t, &r); | |
298 | t->device = r.device_from; | |
299 | } | |
300 | ||
768277cc JA |
301 | fprintf(ofp, "%3d,%-3d %2d %8d %5d.%09lu %5u %2s %3s ", |
302 | MAJOR(t->device), MINOR(t->device), pci->cpu, t->sequence, | |
303 | (int) SECONDS(t->time), (unsigned long) NANO_SECONDS(t->time), | |
304 | t->pid, act, rwbs); | |
71d5d4c9 | 305 | |
bfc70ad5 JA |
306 | name = find_process_name(t->pid); |
307 | ||
768277cc | 308 | switch (act[0]) { |
80c53608 | 309 | case 'R': /* Requeue */ |
71d5d4c9 | 310 | case 'C': /* Complete */ |
768277cc JA |
311 | if (t->action & BLK_TC_ACT(BLK_TC_PC)) { |
312 | char *p = dump_pdu(pdu_buf, pdu_len); | |
313 | if (p) | |
314 | fprintf(ofp, "(%s) ", p); | |
315 | fprintf(ofp, "[%d]\n", t->error); | |
316 | } else { | |
71d5d4c9 | 317 | if (elapsed != -1ULL) { |
d57450af JA |
318 | if (t_sec(t)) |
319 | fprintf(ofp, "%llu + %u (%8llu) [%d]\n", | |
320 | (unsigned long long) t->sector, | |
321 | t_sec(t), elapsed, t->error); | |
322 | else | |
323 | fprintf(ofp, "%llu (%8llu) [%d]\n", | |
324 | (unsigned long long) t->sector, | |
325 | elapsed, t->error); | |
768277cc | 326 | } else { |
d57450af JA |
327 | if (t_sec(t)) |
328 | fprintf(ofp, "%llu + %u [%d]\n", | |
329 | (unsigned long long) t->sector, | |
330 | t_sec(t), t->error); | |
331 | else | |
332 | fprintf(ofp, "%llu [%d]\n", | |
333 | (unsigned long long) t->sector, | |
334 | t->error); | |
768277cc | 335 | } |
71d5d4c9 | 336 | } |
71d5d4c9 JA |
337 | break; |
338 | ||
339 | case 'D': /* Issue */ | |
71d5d4c9 | 340 | case 'I': /* Insert */ |
71d5d4c9 | 341 | case 'Q': /* Queue */ |
bd5e71cf | 342 | case 'B': /* Bounce */ |
768277cc JA |
343 | if (t->action & BLK_TC_ACT(BLK_TC_PC)) { |
344 | char *p; | |
1c8ca7b5 | 345 | fprintf(ofp, "%u ", t->bytes); |
768277cc JA |
346 | p = dump_pdu(pdu_buf, pdu_len); |
347 | if (p) | |
348 | fprintf(ofp, "(%s) ", p); | |
bfc70ad5 | 349 | fprintf(ofp, "[%s]\n", name); |
768277cc JA |
350 | } else { |
351 | if (elapsed != -1ULL) { | |
d57450af JA |
352 | if (t_sec(t)) |
353 | fprintf(ofp, "%llu + %u (%8llu) [%s]\n", | |
354 | (unsigned long long) t->sector, | |
355 | t_sec(t), elapsed, name); | |
356 | else | |
357 | fprintf(ofp, "(%8llu) [%s]\n", elapsed, | |
358 | name); | |
768277cc | 359 | } else { |
d57450af JA |
360 | if (t_sec(t)) |
361 | fprintf(ofp, "%llu + %u [%s]\n", | |
362 | (unsigned long long) t->sector, | |
363 | t_sec(t), name); | |
364 | else | |
365 | fprintf(ofp, "[%s]\n", name); | |
768277cc JA |
366 | } |
367 | } | |
71d5d4c9 JA |
368 | break; |
369 | ||
bd5e71cf | 370 | case 'M': /* Back merge */ |
71d5d4c9 | 371 | case 'F': /* Front merge */ |
768277cc JA |
372 | case 'G': /* Get request */ |
373 | case 'S': /* Sleep request */ | |
d57450af JA |
374 | if (t_sec(t)) |
375 | fprintf(ofp, "%llu + %u [%s]\n", | |
376 | (unsigned long long) t->sector, t_sec(t), name); | |
377 | else | |
378 | fprintf(ofp, "[%s]\n", name); | |
71d5d4c9 JA |
379 | break; |
380 | ||
381 | case 'P': /* Plug */ | |
bfc70ad5 | 382 | fprintf(ofp, "[%s]\n", name); |
71d5d4c9 JA |
383 | break; |
384 | ||
385 | case 'U': /* Unplug IO */ | |
a8f30e64 | 386 | case 'T': /* Unplug timer */ |
bfc70ad5 | 387 | fprintf(ofp, "[%s] %u\n", name, get_pdu_int(t)); |
71d5d4c9 JA |
388 | break; |
389 | ||
97d13fb0 | 390 | case 'A': /* remap */ |
a8f30e64 | 391 | fprintf(ofp, "%llu + %u <- (%d,%d) %llu\n", |
e9f883ca | 392 | (unsigned long long) t->sector, t_sec(t), |
a8f30e64 | 393 | MAJOR(r.device), MINOR(r.device), |
e9f883ca | 394 | (unsigned long long) r.sector); |
a8f30e64 | 395 | break; |
1a15f6a8 | 396 | |
71d5d4c9 | 397 | case 'X': /* Split */ |
768277cc | 398 | fprintf(ofp, "%llu / %u [%s]\n", (unsigned long long) t->sector, |
bfc70ad5 | 399 | get_pdu_int(t), name); |
71d5d4c9 JA |
400 | break; |
401 | ||
1a15f6a8 AB |
402 | case 'm': /* Message */ |
403 | fprintf(ofp, "%*s\n", pdu_len, pdu_buf); | |
404 | break; | |
405 | ||
71d5d4c9 | 406 | default: |
768277cc JA |
407 | fprintf(stderr, "Unknown action %c\n", act[0]); |
408 | break; | |
71d5d4c9 JA |
409 | } |
410 | ||
71d5d4c9 JA |
411 | } |
412 | ||
413 | void process_fmt(char *act, struct per_cpu_info *pci, struct blk_io_trace *t, | |
414 | unsigned long long elapsed, int pdu_len, | |
415 | unsigned char *pdu_buf) | |
416 | { | |
768277cc JA |
417 | char *p = override_format[(int) *act]; |
418 | ||
419 | if (!p) { | |
420 | process_default(act, pci, t, elapsed, pdu_len, pdu_buf); | |
421 | return; | |
422 | } | |
71d5d4c9 JA |
423 | |
424 | while (*p) { | |
425 | switch (*p) { | |
426 | case '%': /* Field specifier */ | |
427 | p++; | |
428 | if (*p == '%') | |
429 | fprintf(ofp, "%c", *p++); | |
430 | else if (!*p) | |
431 | fprintf(ofp, "%c", '%'); | |
432 | else | |
433 | p = parse_field(act, pci, t, elapsed, | |
434 | pdu_len, pdu_buf, p); | |
435 | break; | |
436 | case '\\': { /* escape */ | |
437 | switch (p[1]) { | |
438 | case 'b': fprintf(ofp, "\b"); break; | |
439 | case 'n': fprintf(ofp, "\n"); break; | |
440 | case 'r': fprintf(ofp, "\r"); break; | |
441 | case 't': fprintf(ofp, "\t"); break; | |
442 | default: | |
443 | fprintf(stderr, | |
444 | "Invalid escape char in format %c\n", | |
445 | p[1]); | |
446 | exit(1); | |
447 | /*NOTREACHED*/ | |
448 | } | |
449 | p += 2; | |
450 | break; | |
451 | } | |
452 | default: | |
453 | fprintf(ofp, "%c", *p++); | |
454 | break; | |
455 | } | |
456 | } | |
457 | } | |
458 | ||
459 |