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