Commit | Line | Data |
---|---|---|
d956a2cd JA |
1 | /* |
2 | * block queue tracing parse application | |
3 | * | |
4 | * Copyright (C) 2005 Jens Axboe <axboe@suse.de> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | */ | |
d0ca268b JA |
21 | #include <sys/types.h> |
22 | #include <sys/stat.h> | |
23 | #include <unistd.h> | |
24 | #include <stdio.h> | |
25 | #include <fcntl.h> | |
26 | #include <stdlib.h> | |
8fc0abbc | 27 | #include <string.h> |
d5396421 | 28 | #include <getopt.h> |
412819ce JA |
29 | #include <errno.h> |
30 | #include <signal.h> | |
d69db225 | 31 | #include <locale.h> |
46e6968b | 32 | #include <limits.h> |
ab197ca7 | 33 | #include <ctype.h> |
d0ca268b | 34 | |
8fc0abbc JA |
35 | #include "blktrace.h" |
36 | #include "rbtree.h" | |
d0ca268b | 37 | |
2e3e8ded JA |
38 | #define SECONDS(x) ((unsigned long long)(x) / 1000000000) |
39 | #define NANO_SECONDS(x) ((unsigned long long)(x) % 1000000000) | |
46e6968b | 40 | #define DOUBLE_TO_NANO_ULL(d) ((unsigned long long)((d) * 1000000000)) |
cfab07eb | 41 | |
e7c9f3ff NS |
42 | #define MINORBITS 20 |
43 | #define MINORMASK ((1U << MINORBITS) - 1) | |
44 | #define MAJOR(dev) ((unsigned int) ((dev) >> MINORBITS)) | |
45 | #define MINOR(dev) ((unsigned int) ((dev) & MINORMASK)) | |
46 | ||
47 | #define min(a, b) ((a) < (b) ? (a) : (b)) | |
d5396421 | 48 | |
ab197ca7 AB |
49 | #define HEADER "%D %2c %8s %5T.%9t %5p %2a %3d " |
50 | ||
152f6476 JA |
51 | struct io_stats { |
52 | unsigned long qreads, qwrites, creads, cwrites, mreads, mwrites; | |
53 | unsigned long ireads, iwrites; | |
54 | unsigned long long qread_kb, qwrite_kb, cread_kb, cwrite_kb; | |
55 | unsigned long long iread_kb, iwrite_kb; | |
06639b27 | 56 | unsigned long io_unplugs, timer_unplugs; |
152f6476 JA |
57 | }; |
58 | ||
d5396421 | 59 | struct per_cpu_info { |
d0ca268b JA |
60 | int cpu; |
61 | int nelems; | |
d0ca268b JA |
62 | |
63 | int fd; | |
87b72777 | 64 | char fname[128]; |
d0ca268b | 65 | |
152f6476 JA |
66 | struct io_stats io_stats; |
67 | }; | |
8fc0abbc | 68 | |
e7c9f3ff NS |
69 | struct per_dev_info { |
70 | dev_t id; | |
71 | char *name; | |
72 | ||
73 | int backwards; | |
74 | unsigned long long events; | |
75 | unsigned long long last_reported_time; | |
76 | struct io_stats io_stats; | |
cb2a1a62 | 77 | unsigned long last_sequence; |
0aa8a62d | 78 | unsigned long skips; |
e7c9f3ff NS |
79 | |
80 | int ncpus; | |
81 | struct per_cpu_info *cpus; | |
82 | }; | |
83 | ||
152f6476 JA |
84 | struct per_process_info { |
85 | char name[16]; | |
86 | __u32 pid; | |
87 | struct io_stats io_stats; | |
88 | struct per_process_info *hash_next, *list_next; | |
50adc0ba JA |
89 | |
90 | /* | |
91 | * individual io stats | |
92 | */ | |
b9d40d6f JA |
93 | unsigned long long longest_allocation_wait[2]; |
94 | unsigned long long longest_dispatch_wait[2]; | |
95 | unsigned long long longest_completion_wait[2]; | |
d0ca268b JA |
96 | }; |
97 | ||
152f6476 JA |
98 | #define PPI_HASH_SHIFT (8) |
99 | static struct per_process_info *ppi_hash[1 << PPI_HASH_SHIFT]; | |
100 | static struct per_process_info *ppi_list; | |
101 | ||
ab197ca7 | 102 | #define S_OPTS "i:o:b:stqw:f:F:" |
d5396421 JA |
103 | static struct option l_opts[] = { |
104 | { | |
105 | .name = "input", | |
106 | .has_arg = 1, | |
107 | .flag = NULL, | |
108 | .val = 'i' | |
109 | }, | |
110 | { | |
111 | .name = "output", | |
112 | .has_arg = 1, | |
113 | .flag = NULL, | |
114 | .val = 'o' | |
115 | }, | |
79f19470 JA |
116 | { |
117 | .name = "batch", | |
118 | .has_arg = 1, | |
119 | .flag = NULL, | |
120 | .val = 'b' | |
121 | }, | |
152f6476 JA |
122 | { |
123 | .name = "per program stats", | |
124 | .has_arg = 0, | |
125 | .flag = NULL, | |
126 | .val = 's' | |
127 | }, | |
7997c5b0 JA |
128 | { |
129 | .name = "track ios", | |
130 | .has_arg = 0, | |
131 | .flag = NULL, | |
132 | .val = 't' | |
133 | }, | |
1e1c60f1 NS |
134 | { |
135 | .name = "quiet", | |
136 | .has_arg = 0, | |
137 | .flag = NULL, | |
138 | .val = 'q' | |
139 | }, | |
46e6968b NS |
140 | { |
141 | .name = "stopwatch", | |
142 | .has_arg = 1, | |
143 | .flag = NULL, | |
144 | .val = 'w' | |
145 | }, | |
ab197ca7 AB |
146 | { |
147 | .name = "format", | |
148 | .has_arg = 1, | |
149 | .flag = NULL, | |
150 | .val = 'f' | |
151 | }, | |
152 | { | |
153 | .name = "format-spec", | |
154 | .has_arg = 1, | |
155 | .flag = NULL, | |
156 | .val = 'F' | |
157 | }, | |
d5396421 JA |
158 | { |
159 | .name = NULL, | |
160 | .has_arg = 0, | |
161 | .flag = NULL, | |
162 | .val = 0 | |
163 | } | |
164 | }; | |
165 | ||
7997c5b0 JA |
166 | /* |
167 | * for sorting the displayed output | |
168 | */ | |
8fc0abbc JA |
169 | struct trace { |
170 | struct blk_io_trace *bit; | |
171 | struct rb_node rb_node; | |
cb2a1a62 JA |
172 | struct trace *next; |
173 | int skipped; | |
8fc0abbc JA |
174 | }; |
175 | ||
cb2a1a62 JA |
176 | static struct rb_root rb_sort_root; |
177 | static struct rb_root rb_track_root; | |
178 | ||
179 | static struct trace *trace_list; | |
180 | ||
7997c5b0 JA |
181 | /* |
182 | * for tracking individual ios | |
183 | */ | |
184 | struct io_track { | |
185 | struct rb_node rb_node; | |
186 | ||
e7c9f3ff | 187 | dev_t device; |
7997c5b0 JA |
188 | __u64 sector; |
189 | __u32 pid; | |
95c15013 | 190 | unsigned long long allocation_time; |
7997c5b0 JA |
191 | unsigned long long queue_time; |
192 | unsigned long long dispatch_time; | |
193 | unsigned long long completion_time; | |
194 | }; | |
195 | ||
e7c9f3ff NS |
196 | static int ndevices; |
197 | static struct per_dev_info *devices; | |
198 | static char *get_dev_name(struct per_dev_info *, char *, int); | |
d0ca268b | 199 | |
152f6476 | 200 | static FILE *ofp; |
e7c9f3ff NS |
201 | static char *output_name; |
202 | ||
203 | static unsigned long long genesis_time; | |
46e6968b NS |
204 | static unsigned long long stopwatch_start; /* start from zero by default */ |
205 | static unsigned long long stopwatch_end = ULONG_LONG_MAX; /* "infinity" */ | |
152f6476 JA |
206 | |
207 | static int per_process_stats; | |
7997c5b0 | 208 | static int track_ios; |
d0ca268b | 209 | |
79f19470 JA |
210 | #define RB_BATCH_DEFAULT (1024) |
211 | static int rb_batch = RB_BATCH_DEFAULT; | |
212 | ||
e7c9f3ff NS |
213 | static int pipeline; |
214 | ||
412819ce JA |
215 | #define is_done() (*(volatile int *)(&done)) |
216 | static volatile int done; | |
217 | ||
152f6476 JA |
218 | static inline unsigned long hash_long(unsigned long val) |
219 | { | |
16ef714e JA |
220 | #if __WORDSIZE == 32 |
221 | val *= 0x9e370001UL; | |
222 | #elif __WORDSIZE == 64 | |
223 | val *= 0x9e37fffffffc0001UL; | |
224 | #else | |
225 | #error unknown word size | |
226 | #endif | |
227 | ||
228 | return val >> (__WORDSIZE - PPI_HASH_SHIFT); | |
152f6476 JA |
229 | } |
230 | ||
231 | static inline void add_process_to_hash(struct per_process_info *ppi) | |
232 | { | |
233 | const int hash_idx = hash_long(ppi->pid); | |
234 | ||
235 | ppi->hash_next = ppi_hash[hash_idx]; | |
236 | ppi_hash[hash_idx] = ppi; | |
237 | } | |
238 | ||
239 | static inline void add_process_to_list(struct per_process_info *ppi) | |
240 | { | |
241 | ppi->list_next = ppi_list; | |
242 | ppi_list = ppi; | |
243 | } | |
244 | ||
245 | static struct per_process_info *find_process_by_pid(__u32 pid) | |
246 | { | |
247 | const int hash_idx = hash_long(pid); | |
248 | struct per_process_info *ppi; | |
249 | ||
250 | ppi = ppi_hash[hash_idx]; | |
251 | while (ppi) { | |
252 | if (ppi->pid == pid) | |
253 | return ppi; | |
254 | ||
255 | ppi = ppi->hash_next; | |
256 | } | |
257 | ||
258 | return NULL; | |
259 | } | |
260 | ||
7997c5b0 JA |
261 | static inline int trace_rb_insert(struct trace *t) |
262 | { | |
263 | struct rb_node **p = &rb_sort_root.rb_node; | |
264 | struct rb_node *parent = NULL; | |
265 | struct trace *__t; | |
266 | ||
e7c9f3ff NS |
267 | if (genesis_time == 0 || t->bit->time < genesis_time) |
268 | genesis_time = t->bit->time; | |
269 | ||
7997c5b0 JA |
270 | while (*p) { |
271 | parent = *p; | |
272 | __t = rb_entry(parent, struct trace, rb_node); | |
273 | ||
e7c9f3ff NS |
274 | if (t->bit->time < __t->bit->time) |
275 | p = &(*p)->rb_left; | |
276 | else if (t->bit->time > __t->bit->time) | |
277 | p = &(*p)->rb_right; | |
278 | else if (t->bit->device < __t->bit->device) | |
279 | p = &(*p)->rb_left; | |
280 | else if (t->bit->device > __t->bit->device) | |
281 | p = &(*p)->rb_right; | |
282 | else if (t->bit->sequence < __t->bit->sequence) | |
7997c5b0 JA |
283 | p = &(*p)->rb_left; |
284 | else if (t->bit->sequence > __t->bit->sequence) | |
285 | p = &(*p)->rb_right; | |
e7c9f3ff NS |
286 | else if (t->bit->device == __t->bit->device) { |
287 | fprintf(stderr, | |
288 | "sequence alias (%d) on device %d,%d!\n", | |
289 | t->bit->sequence, | |
290 | MAJOR(t->bit->device), MINOR(t->bit->device)); | |
7997c5b0 JA |
291 | return 1; |
292 | } | |
293 | } | |
294 | ||
295 | rb_link_node(&t->rb_node, parent, p); | |
296 | rb_insert_color(&t->rb_node, &rb_sort_root); | |
297 | return 0; | |
298 | } | |
299 | ||
300 | static inline int track_rb_insert(struct io_track *iot) | |
301 | { | |
302 | struct rb_node **p = &rb_track_root.rb_node; | |
303 | struct rb_node *parent = NULL; | |
304 | struct io_track *__iot; | |
305 | ||
306 | while (*p) { | |
307 | parent = *p; | |
e7c9f3ff | 308 | |
7997c5b0 JA |
309 | __iot = rb_entry(parent, struct io_track, rb_node); |
310 | ||
e7c9f3ff NS |
311 | if (iot->device < __iot->device) |
312 | p = &(*p)->rb_left; | |
313 | else if (iot->device > __iot->device) | |
314 | p = &(*p)->rb_right; | |
315 | else if (iot->sector < __iot->sector) | |
7997c5b0 JA |
316 | p = &(*p)->rb_left; |
317 | else if (iot->sector > __iot->sector) | |
318 | p = &(*p)->rb_right; | |
319 | else { | |
e7c9f3ff | 320 | fprintf(stderr, |
ab197ca7 AB |
321 | "sector alias (%Lu) on device %d,%d!\n", |
322 | (unsigned long long) iot->sector, | |
e7c9f3ff | 323 | MAJOR(iot->device), MINOR(iot->device)); |
7997c5b0 JA |
324 | return 1; |
325 | } | |
326 | } | |
327 | ||
328 | rb_link_node(&iot->rb_node, parent, p); | |
329 | rb_insert_color(&iot->rb_node, &rb_track_root); | |
330 | return 0; | |
331 | } | |
332 | ||
e7c9f3ff | 333 | static struct io_track *__find_track(dev_t device, __u64 sector) |
7997c5b0 JA |
334 | { |
335 | struct rb_node **p = &rb_track_root.rb_node; | |
336 | struct rb_node *parent = NULL; | |
337 | struct io_track *__iot; | |
338 | ||
339 | while (*p) { | |
340 | parent = *p; | |
341 | ||
342 | __iot = rb_entry(parent, struct io_track, rb_node); | |
343 | ||
e7c9f3ff NS |
344 | if (device < __iot->device) |
345 | p = &(*p)->rb_left; | |
346 | else if (device > __iot->device) | |
347 | p = &(*p)->rb_right; | |
348 | else if (sector < __iot->sector) | |
7997c5b0 JA |
349 | p = &(*p)->rb_left; |
350 | else if (sector > __iot->sector) | |
351 | p = &(*p)->rb_right; | |
352 | else | |
353 | return __iot; | |
354 | } | |
355 | ||
356 | return NULL; | |
357 | } | |
358 | ||
e7c9f3ff | 359 | static struct io_track *find_track(__u32 pid, dev_t device, __u64 sector) |
7997c5b0 | 360 | { |
916b5501 | 361 | struct io_track *iot; |
7997c5b0 | 362 | |
e7c9f3ff | 363 | iot = __find_track(device, sector); |
7997c5b0 JA |
364 | if (!iot) { |
365 | iot = malloc(sizeof(*iot)); | |
50adc0ba | 366 | iot->pid = pid; |
e7c9f3ff | 367 | iot->device = device; |
7997c5b0 JA |
368 | iot->sector = sector; |
369 | track_rb_insert(iot); | |
370 | } | |
371 | ||
372 | return iot; | |
373 | } | |
374 | ||
a01516de | 375 | static void log_track_frontmerge(struct blk_io_trace *t) |
2e3e8ded JA |
376 | { |
377 | struct io_track *iot; | |
378 | ||
379 | if (!track_ios) | |
380 | return; | |
2e3e8ded | 381 | |
a01516de | 382 | iot = __find_track(t->device, t->sector + (t->bytes >> 9)); |
cb2a1a62 JA |
383 | if (!iot) { |
384 | fprintf(stderr, "failed to find mergeable event\n"); | |
385 | return; | |
2e3e8ded | 386 | } |
cb2a1a62 JA |
387 | |
388 | rb_erase(&iot->rb_node, &rb_track_root); | |
a01516de | 389 | iot->sector -= t->bytes >> 9; |
cb2a1a62 | 390 | track_rb_insert(iot); |
2e3e8ded JA |
391 | } |
392 | ||
95c15013 | 393 | static void log_track_getrq(struct blk_io_trace *t) |
2e3e8ded JA |
394 | { |
395 | struct io_track *iot; | |
396 | ||
397 | if (!track_ios) | |
398 | return; | |
399 | ||
e7c9f3ff | 400 | iot = find_track(t->pid, t->device, t->sector); |
95c15013 JA |
401 | iot->allocation_time = t->time; |
402 | } | |
403 | ||
404 | ||
405 | /* | |
406 | * return time between rq allocation and queue | |
407 | */ | |
408 | static unsigned long long log_track_queue(struct blk_io_trace *t) | |
409 | { | |
50adc0ba | 410 | unsigned long long elapsed; |
95c15013 JA |
411 | struct io_track *iot; |
412 | ||
413 | if (!track_ios) | |
414 | return -1; | |
415 | ||
e7c9f3ff | 416 | iot = find_track(t->pid, t->device, t->sector); |
2e3e8ded | 417 | iot->queue_time = t->time; |
50adc0ba JA |
418 | elapsed = iot->queue_time - iot->allocation_time; |
419 | ||
420 | if (per_process_stats) { | |
421 | struct per_process_info *ppi = find_process_by_pid(iot->pid); | |
b9d40d6f | 422 | int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
50adc0ba | 423 | |
b9d40d6f JA |
424 | if (ppi && elapsed > ppi->longest_allocation_wait[w]) |
425 | ppi->longest_allocation_wait[w] = elapsed; | |
50adc0ba JA |
426 | } |
427 | ||
428 | return elapsed; | |
2e3e8ded JA |
429 | } |
430 | ||
431 | /* | |
432 | * return time between queue and issue | |
433 | */ | |
434 | static unsigned long long log_track_issue(struct blk_io_trace *t) | |
435 | { | |
50adc0ba | 436 | unsigned long long elapsed; |
2e3e8ded JA |
437 | struct io_track *iot; |
438 | ||
439 | if (!track_ios) | |
440 | return -1; | |
441 | if ((t->action & BLK_TC_ACT(BLK_TC_FS)) == 0) | |
442 | return -1; | |
443 | ||
e7c9f3ff | 444 | iot = __find_track(t->device, t->sector); |
cb2a1a62 JA |
445 | if (!iot) { |
446 | fprintf(stderr, "failed to find issue event\n"); | |
2e3e8ded | 447 | return -1; |
cb2a1a62 | 448 | } |
2e3e8ded JA |
449 | |
450 | iot->dispatch_time = t->time; | |
50adc0ba JA |
451 | elapsed = iot->dispatch_time - iot->queue_time; |
452 | ||
453 | if (per_process_stats) { | |
454 | struct per_process_info *ppi = find_process_by_pid(iot->pid); | |
b9d40d6f | 455 | int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
50adc0ba | 456 | |
b9d40d6f JA |
457 | if (ppi && elapsed > ppi->longest_dispatch_wait[w]) |
458 | ppi->longest_dispatch_wait[w] = elapsed; | |
50adc0ba JA |
459 | } |
460 | ||
461 | return elapsed; | |
2e3e8ded JA |
462 | } |
463 | ||
464 | /* | |
465 | * return time between dispatch and complete | |
466 | */ | |
467 | static unsigned long long log_track_complete(struct blk_io_trace *t) | |
468 | { | |
469 | unsigned long long elapsed; | |
470 | struct io_track *iot; | |
471 | ||
472 | if (!track_ios) | |
473 | return -1; | |
474 | if ((t->action & BLK_TC_ACT(BLK_TC_FS)) == 0) | |
475 | return -1; | |
476 | ||
e7c9f3ff | 477 | iot = __find_track(t->device, t->sector); |
cb2a1a62 JA |
478 | if (!iot) { |
479 | fprintf(stderr, "failed to find complete event\n"); | |
2e3e8ded | 480 | return -1; |
cb2a1a62 | 481 | } |
2e3e8ded JA |
482 | |
483 | iot->completion_time = t->time; | |
484 | elapsed = iot->completion_time - iot->dispatch_time; | |
485 | ||
50adc0ba JA |
486 | if (per_process_stats) { |
487 | struct per_process_info *ppi = find_process_by_pid(iot->pid); | |
b9d40d6f | 488 | int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
50adc0ba | 489 | |
b9d40d6f JA |
490 | if (ppi && elapsed > ppi->longest_completion_wait[w]) |
491 | ppi->longest_completion_wait[w] = elapsed; | |
50adc0ba JA |
492 | } |
493 | ||
2e3e8ded JA |
494 | /* |
495 | * kill the trace, we don't need it after completion | |
496 | */ | |
497 | rb_erase(&iot->rb_node, &rb_track_root); | |
498 | free(iot); | |
499 | ||
500 | return elapsed; | |
501 | } | |
502 | ||
503 | ||
152f6476 JA |
504 | static struct io_stats *find_process_io_stats(__u32 pid, char *name) |
505 | { | |
506 | struct per_process_info *ppi = find_process_by_pid(pid); | |
507 | ||
508 | if (!ppi) { | |
509 | ppi = malloc(sizeof(*ppi)); | |
510 | memset(ppi, 0, sizeof(*ppi)); | |
511 | strncpy(ppi->name, name, sizeof(ppi->name)); | |
512 | ppi->pid = pid; | |
513 | add_process_to_hash(ppi); | |
514 | add_process_to_list(ppi); | |
515 | } | |
516 | ||
517 | return &ppi->io_stats; | |
518 | } | |
519 | ||
e7c9f3ff NS |
520 | |
521 | static void resize_cpu_info(struct per_dev_info *pdi, int cpu) | |
a718bd37 | 522 | { |
e7c9f3ff NS |
523 | struct per_cpu_info *cpus = pdi->cpus; |
524 | int ncpus = pdi->ncpus; | |
525 | int new_count = cpu + 1; | |
526 | int new_space, size; | |
a718bd37 NS |
527 | char *new_start; |
528 | ||
e7c9f3ff NS |
529 | size = new_count * sizeof(struct per_cpu_info); |
530 | cpus = realloc(cpus, size); | |
531 | if (!cpus) { | |
532 | char name[20]; | |
533 | fprintf(stderr, "Out of memory, CPU info for device %s (%d)\n", | |
534 | get_dev_name(pdi, name, sizeof(name)), size); | |
a718bd37 NS |
535 | exit(1); |
536 | } | |
537 | ||
e7c9f3ff NS |
538 | new_start = (char *)cpus + (ncpus * sizeof(struct per_cpu_info)); |
539 | new_space = (new_count - ncpus) * sizeof(struct per_cpu_info); | |
a718bd37 | 540 | memset(new_start, 0, new_space); |
e7c9f3ff NS |
541 | |
542 | pdi->ncpus = new_count; | |
543 | pdi->cpus = cpus; | |
544 | } | |
cb2a1a62 | 545 | |
e7c9f3ff NS |
546 | static struct per_cpu_info *get_cpu_info(struct per_dev_info *pdi, int cpu) |
547 | { | |
cb2a1a62 JA |
548 | struct per_cpu_info *pci; |
549 | ||
e7c9f3ff NS |
550 | if (cpu >= pdi->ncpus) |
551 | resize_cpu_info(pdi, cpu); | |
cb2a1a62 JA |
552 | |
553 | pci = &pdi->cpus[cpu]; | |
554 | pci->cpu = cpu; | |
555 | return pci; | |
a718bd37 NS |
556 | } |
557 | ||
e7c9f3ff NS |
558 | |
559 | static int resize_devices(char *name) | |
a718bd37 | 560 | { |
e7c9f3ff | 561 | int size = (ndevices + 1) * sizeof(struct per_dev_info); |
c499bf38 | 562 | |
e7c9f3ff NS |
563 | devices = realloc(devices, size); |
564 | if (!devices) { | |
565 | fprintf(stderr, "Out of memory, device %s (%d)\n", name, size); | |
566 | return 1; | |
567 | } | |
568 | memset(&devices[ndevices], 0, sizeof(struct per_dev_info)); | |
569 | devices[ndevices].name = name; | |
570 | ndevices++; | |
571 | return 0; | |
572 | } | |
a718bd37 | 573 | |
cb2a1a62 | 574 | static struct per_dev_info *get_dev_info(dev_t id) |
e7c9f3ff | 575 | { |
cb2a1a62 | 576 | struct per_dev_info *pdi; |
e7c9f3ff | 577 | int i; |
c499bf38 | 578 | |
e7c9f3ff NS |
579 | for (i = 0; i < ndevices; i++) |
580 | if (devices[i].id == id) | |
581 | return &devices[i]; | |
cb2a1a62 | 582 | |
e7c9f3ff NS |
583 | if (resize_devices(NULL) != 0) |
584 | return NULL; | |
cb2a1a62 JA |
585 | |
586 | pdi = &devices[ndevices - 1]; | |
587 | pdi->id = id; | |
588 | return pdi; | |
a718bd37 NS |
589 | } |
590 | ||
e7c9f3ff NS |
591 | static char *get_dev_name(struct per_dev_info *pdi, char *buffer, int size) |
592 | { | |
593 | if (pdi->name) | |
594 | snprintf(buffer, size, "%s", pdi->name); | |
595 | else | |
596 | snprintf(buffer, size, "%d,%d", MAJOR(pdi->id), MINOR(pdi->id)); | |
597 | return buffer; | |
598 | } | |
599 | ||
e7c9f3ff | 600 | static void check_time(struct per_dev_info *pdi, struct blk_io_trace *bit) |
cfab07eb AB |
601 | { |
602 | unsigned long long this = bit->time; | |
e7c9f3ff | 603 | unsigned long long last = pdi->last_reported_time; |
cfab07eb | 604 | |
e7c9f3ff NS |
605 | pdi->backwards = (this < last) ? 'B' : ' '; |
606 | pdi->last_reported_time = this; | |
cfab07eb AB |
607 | } |
608 | ||
152f6476 JA |
609 | static inline void __account_m(struct io_stats *ios, struct blk_io_trace *t, |
610 | int rw) | |
d0ca268b JA |
611 | { |
612 | if (rw) { | |
152f6476 JA |
613 | ios->mwrites++; |
614 | ios->qwrite_kb += t->bytes >> 10; | |
d0ca268b | 615 | } else { |
152f6476 JA |
616 | ios->mreads++; |
617 | ios->qread_kb += t->bytes >> 10; | |
618 | } | |
619 | } | |
620 | ||
621 | static inline void account_m(struct blk_io_trace *t, struct per_cpu_info *pci, | |
622 | int rw) | |
623 | { | |
624 | __account_m(&pci->io_stats, t, rw); | |
625 | ||
626 | if (per_process_stats) { | |
627 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
628 | ||
629 | __account_m(ios, t, rw); | |
d0ca268b JA |
630 | } |
631 | } | |
632 | ||
152f6476 JA |
633 | static inline void __account_q(struct io_stats *ios, struct blk_io_trace *t, |
634 | int rw) | |
d0ca268b JA |
635 | { |
636 | if (rw) { | |
152f6476 JA |
637 | ios->qwrites++; |
638 | ios->qwrite_kb += t->bytes >> 10; | |
d0ca268b | 639 | } else { |
152f6476 JA |
640 | ios->qreads++; |
641 | ios->qread_kb += t->bytes >> 10; | |
642 | } | |
643 | } | |
644 | ||
645 | static inline void account_q(struct blk_io_trace *t, struct per_cpu_info *pci, | |
646 | int rw) | |
647 | { | |
648 | __account_q(&pci->io_stats, t, rw); | |
649 | ||
650 | if (per_process_stats) { | |
651 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
652 | ||
653 | __account_q(ios, t, rw); | |
d0ca268b JA |
654 | } |
655 | } | |
656 | ||
152f6476 | 657 | static inline void __account_c(struct io_stats *ios, int rw, unsigned int bytes) |
d0ca268b JA |
658 | { |
659 | if (rw) { | |
152f6476 JA |
660 | ios->cwrites++; |
661 | ios->cwrite_kb += bytes >> 10; | |
d0ca268b | 662 | } else { |
152f6476 JA |
663 | ios->creads++; |
664 | ios->cread_kb += bytes >> 10; | |
665 | } | |
666 | } | |
667 | ||
668 | static inline void account_c(struct blk_io_trace *t, struct per_cpu_info *pci, | |
669 | int rw, int bytes) | |
670 | { | |
671 | __account_c(&pci->io_stats, rw, bytes); | |
672 | ||
673 | if (per_process_stats) { | |
674 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
675 | ||
676 | __account_c(ios, rw, bytes); | |
d0ca268b JA |
677 | } |
678 | } | |
679 | ||
152f6476 | 680 | static inline void __account_i(struct io_stats *ios, int rw, unsigned int bytes) |
afd2d7ad | 681 | { |
682 | if (rw) { | |
152f6476 JA |
683 | ios->iwrites++; |
684 | ios->iwrite_kb += bytes >> 10; | |
afd2d7ad | 685 | } else { |
152f6476 JA |
686 | ios->ireads++; |
687 | ios->iread_kb += bytes >> 10; | |
afd2d7ad | 688 | } |
689 | } | |
690 | ||
152f6476 JA |
691 | static inline void account_i(struct blk_io_trace *t, struct per_cpu_info *pci, |
692 | int rw) | |
d0ca268b | 693 | { |
152f6476 JA |
694 | __account_i(&pci->io_stats, rw, t->bytes); |
695 | ||
696 | if (per_process_stats) { | |
697 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
d5396421 | 698 | |
152f6476 JA |
699 | __account_i(ios, rw, t->bytes); |
700 | } | |
701 | } | |
702 | ||
06639b27 JA |
703 | static inline void __account_unplug(struct io_stats *ios, int timer) |
704 | { | |
705 | if (timer) | |
706 | ios->timer_unplugs++; | |
707 | else | |
708 | ios->io_unplugs++; | |
709 | } | |
710 | ||
711 | static inline void account_unplug(struct blk_io_trace *t, | |
712 | struct per_cpu_info *pci, int timer) | |
713 | { | |
714 | __account_unplug(&pci->io_stats, timer); | |
715 | ||
716 | if (per_process_stats) { | |
717 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
718 | ||
719 | __account_unplug(ios, timer); | |
720 | } | |
721 | } | |
722 | ||
ab197ca7 AB |
723 | #define VALID_SPECS "BCDFGMPQRSTU" |
724 | static char *override_format[256]; | |
725 | static inline int valid_spec(int spec) | |
152f6476 | 726 | { |
ab197ca7 | 727 | return strchr(VALID_SPECS, spec) != NULL; |
d0ca268b JA |
728 | } |
729 | ||
ab197ca7 | 730 | static void set_all_format_specs(char *optarg) |
d0ca268b | 731 | { |
ab197ca7 | 732 | char *p; |
d0ca268b | 733 | |
ab197ca7 AB |
734 | for (p = VALID_SPECS; *p; p++) |
735 | if (override_format[(int)(*p)] == NULL) | |
736 | override_format[(int)(*p)] = strdup(optarg); | |
737 | } | |
d0ca268b | 738 | |
ab197ca7 AB |
739 | static int add_format_spec(char *optarg) |
740 | { | |
741 | int spec = optarg[0]; | |
d0ca268b | 742 | |
ab197ca7 AB |
743 | if (!valid_spec(spec)) { |
744 | fprintf(stderr,"Bad format specifier %c\n", spec); | |
745 | return 1; | |
746 | } | |
747 | if (optarg[1] != ',') { | |
748 | fprintf(stderr,"Bad format specifier - need ',' %s\n", optarg); | |
749 | return 1; | |
750 | } | |
751 | optarg += 2; | |
752 | if (*optarg == '\0') { | |
753 | fprintf(stderr,"Bad format specifier - need fmt %s\n", optarg); | |
754 | return 1; | |
755 | } | |
756 | ||
757 | /* | |
758 | * Set both merges (front and back) | |
759 | */ | |
760 | if (spec == 'M') { | |
761 | override_format['B'] = strdup(optarg); | |
762 | override_format['M'] = strdup(optarg); | |
763 | } else | |
764 | override_format[spec] = strdup(optarg); | |
d0ca268b | 765 | |
ab197ca7 | 766 | return 0; |
d0ca268b JA |
767 | } |
768 | ||
ab197ca7 AB |
769 | static void print_field(char *act, struct per_cpu_info *pci, |
770 | struct blk_io_trace *t, unsigned long long elapsed, | |
771 | int pdu_len, unsigned char *pdu_buf, char field, | |
772 | int minus, int has_w, int width) | |
d0ca268b | 773 | { |
ab197ca7 | 774 | char format[64]; |
2e3e8ded | 775 | |
ab197ca7 AB |
776 | if (has_w) { |
777 | if (minus) | |
778 | sprintf(format, "%%-%d", width); | |
779 | else | |
780 | sprintf(format, "%%%d", width); | |
781 | } else | |
782 | sprintf(format, "%%"); | |
783 | ||
784 | switch (field) { | |
785 | case 'a': | |
786 | fprintf(ofp, strcat(format, "s"), act); | |
787 | break; | |
788 | case 'c': | |
789 | fprintf(ofp, strcat(format, "d"), pci->cpu); | |
790 | break; | |
791 | case 'C': | |
792 | fprintf(ofp, strcat(format, "s"), t->comm); | |
793 | break; | |
794 | case 'd': { | |
795 | char rwbs[4]; | |
796 | int i = 0; | |
797 | int w = t->action & BLK_TC_ACT(BLK_TC_WRITE); | |
798 | int b = t->action & BLK_TC_ACT(BLK_TC_BARRIER); | |
799 | int s = t->action & BLK_TC_ACT(BLK_TC_SYNC); | |
800 | if (w) | |
801 | rwbs[i++] = 'W'; | |
802 | else | |
803 | rwbs[i++] = 'R'; | |
804 | if (b) | |
805 | rwbs[i++] = 'B'; | |
806 | if (s) | |
807 | rwbs[i++] = 'S'; | |
808 | rwbs[i] = '\0'; | |
809 | fprintf(ofp, strcat(format, "s"), rwbs); | |
810 | break; | |
811 | } | |
812 | case 'D': /* format width ignored */ | |
813 | fprintf(ofp,"%3d,%-3d", MAJOR(t->device), MINOR(t->device)); | |
814 | break; | |
815 | case 'e': | |
816 | fprintf(ofp, strcat(format, "d"), t->error); | |
817 | break; | |
818 | case 'M': | |
819 | fprintf(ofp, strcat(format, "d"), MAJOR(t->device)); | |
820 | break; | |
821 | case 'm': | |
822 | fprintf(ofp, strcat(format, "d"), MINOR(t->device)); | |
823 | break; | |
824 | case 'n': | |
825 | fprintf(ofp, strcat(format, "u"), t->bytes >> 9); | |
826 | break; | |
827 | case 'p': | |
828 | fprintf(ofp, strcat(format, "u"), t->pid); | |
829 | break; | |
830 | case 'P': /* format width ignored */ | |
831 | if ((pdu_len > 0) && (pdu_buf != NULL)) { | |
832 | int i; | |
833 | unsigned char *p = pdu_buf; | |
834 | for (i = 0; i < pdu_len; i++) | |
835 | fprintf(ofp, "%02x ", *p++); | |
836 | } | |
837 | break; | |
838 | case 's': | |
839 | fprintf(ofp, strcat(format, "ld"), t->sequence); | |
840 | break; | |
841 | case 'S': | |
842 | fprintf(ofp, strcat(format, "lu"), t->sector); | |
843 | break; | |
844 | case 't': | |
845 | sprintf(format, "%%0%dlu", has_w ? width : 9); | |
846 | fprintf(ofp, format, NANO_SECONDS(t->time)); | |
847 | break; | |
848 | case 'T': | |
849 | fprintf(ofp, strcat(format, "d"), SECONDS(t->time)); | |
850 | break; | |
851 | case 'u': | |
852 | if (elapsed == -1ULL) { | |
853 | fprintf(stderr, "Expecting elapsed value\n"); | |
854 | exit(1); | |
855 | } | |
856 | fprintf(ofp, strcat(format, "llu"), elapsed / 1000); | |
857 | break; | |
858 | case 'U': { | |
859 | __u64 *depth = (__u64 *) ((char *) t + sizeof(*t)); | |
860 | fprintf(ofp, strcat(format, "u"), | |
861 | (unsigned int) be64_to_cpu(*depth)); | |
862 | break; | |
863 | } | |
864 | default: | |
865 | fprintf(ofp,strcat(format, "c"), field); | |
866 | break; | |
867 | } | |
868 | } | |
2e3e8ded | 869 | |
ab197ca7 AB |
870 | static char *parse_field(char *act, struct per_cpu_info *pci, |
871 | struct blk_io_trace *t, unsigned long long elapsed, | |
872 | int pdu_len, unsigned char *pdu_buf, | |
873 | char *master_format) | |
874 | { | |
875 | int minus = 0; | |
876 | int has_w = 0; | |
877 | int width = 0; | |
878 | char *p = master_format; | |
879 | ||
880 | if (*p == '-') { | |
881 | minus = 1; | |
882 | p++; | |
2e3e8ded | 883 | } |
ab197ca7 AB |
884 | if (isdigit(*p)) { |
885 | has_w = 1; | |
886 | do { | |
887 | width = (width * 10) + (*p++ - '0'); | |
888 | } while ((*p) && (isdigit(*p))); | |
889 | } | |
890 | if (*p) { | |
891 | print_field(act, pci, t, elapsed, pdu_len, pdu_buf, *p++, | |
892 | minus, has_w, width); | |
893 | } | |
894 | return p; | |
d0ca268b JA |
895 | } |
896 | ||
ab197ca7 AB |
897 | static char *fmt_select(int fmt_spec, struct blk_io_trace *t, |
898 | unsigned long long elapsed) | |
d0ca268b | 899 | { |
ab197ca7 AB |
900 | char *fmt; |
901 | char scratch_format[1024]; | |
2e3e8ded | 902 | |
ab197ca7 AB |
903 | if (override_format[fmt_spec] != NULL) |
904 | return override_format[fmt_spec]; | |
95c15013 | 905 | |
ab197ca7 AB |
906 | switch (fmt_spec) { |
907 | case 'C': /* Complete */ | |
908 | if (t->action & BLK_TC_ACT(BLK_TC_PC)) { | |
909 | strcpy(scratch_format, HEADER); | |
910 | strcat(scratch_format, "%P"); | |
911 | } else { | |
912 | strcpy(scratch_format, HEADER "%S + %n "); | |
913 | if (elapsed != -1ULL) | |
914 | strcat(scratch_format, "(%8u) "); | |
915 | } | |
916 | strcat(scratch_format, "[%e]\n"); | |
917 | fmt = scratch_format; | |
918 | break; | |
919 | ||
920 | case 'D': /* Issue */ | |
921 | if (t->action & BLK_TC_ACT(BLK_TC_PC)) { | |
922 | strcpy(scratch_format, HEADER); | |
923 | strcat(scratch_format, "%P"); | |
924 | } else { | |
925 | strcpy(scratch_format, HEADER "%S + %n "); | |
926 | if (elapsed != -1ULL) | |
927 | strcat(scratch_format, "(%8u) "); | |
928 | } | |
929 | strcat(scratch_format,"[%C]\n"); | |
930 | fmt = scratch_format; | |
931 | break; | |
932 | ||
933 | case 'Q': /* Queue */ | |
934 | strcpy(scratch_format, HEADER "%S + %n "); | |
935 | if (elapsed != -1ULL) | |
936 | strcat(scratch_format, "(%8u) "); | |
937 | strcat(scratch_format,"[%C]\n"); | |
938 | fmt = scratch_format; | |
939 | break; | |
940 | ||
941 | case 'B': /* Back merge */ | |
942 | case 'F': /* Front merge */ | |
943 | case 'M': /* Front or back merge */ | |
944 | fmt = HEADER "%S + %n [%C]\n"; | |
945 | break; | |
946 | ||
947 | case 'P': /* Plug */ | |
948 | fmt = HEADER "[%C]\n"; | |
949 | break; | |
950 | ||
951 | case 'G': /* Get request */ | |
952 | case 'S': /* Sleep request */ | |
953 | fmt = HEADER "%S + %n [%C]\n"; | |
954 | break; | |
955 | ||
956 | case 'U': /* Unplug IO */ | |
957 | case 'T': /* Unplug timer */ | |
958 | fmt = HEADER "[%C] %U\n"; | |
959 | break; | |
960 | ||
961 | default: | |
962 | fprintf(stderr,"FATAL: Invalid format spec %c\n", fmt_spec); | |
963 | exit(1); | |
964 | /*NOTREACHED*/ | |
95c15013 | 965 | } |
ab197ca7 AB |
966 | |
967 | return fmt; | |
d0ca268b JA |
968 | } |
969 | ||
ab197ca7 AB |
970 | static void process_fmt(char *act, struct per_cpu_info *pci, |
971 | struct blk_io_trace *t, unsigned long long elapsed, | |
972 | int pdu_len, unsigned char *pdu_buf) | |
d0ca268b | 973 | { |
ab197ca7 | 974 | char *p = fmt_select(act[0], t, elapsed); |
2e3e8ded | 975 | |
ab197ca7 AB |
976 | while (*p) { |
977 | switch (*p) { | |
978 | case '%': /* Field specifier */ | |
979 | p++; | |
980 | if (*p == '%') | |
981 | fprintf(ofp, "%c", *p++); | |
982 | else if (!*p) | |
983 | fprintf(ofp, "%c", '%'); | |
984 | else | |
985 | p = parse_field(act, pci, t, elapsed, | |
986 | pdu_len, pdu_buf, p); | |
987 | break; | |
988 | case '\\': { /* escape */ | |
989 | switch (p[1]) { | |
990 | case 'b': fprintf(ofp, "\b"); break; | |
991 | case 'n': fprintf(ofp, "\n"); break; | |
992 | case 'r': fprintf(ofp, "\r"); break; | |
993 | case 't': fprintf(ofp, "\t"); break; | |
994 | default: | |
995 | fprintf(stderr, | |
996 | "Invalid escape char in format %c\n", | |
997 | p[1]); | |
998 | exit(1); | |
999 | /*NOTREACHED*/ | |
1000 | } | |
1001 | p += 2; | |
1002 | break; | |
1003 | } | |
1004 | default: | |
1005 | fprintf(ofp, "%c", *p++); | |
1006 | break; | |
1007 | } | |
2e3e8ded | 1008 | } |
ab197ca7 AB |
1009 | } |
1010 | ||
1011 | static void log_complete(struct per_cpu_info *pci, struct blk_io_trace *t, | |
1012 | char *act) | |
1013 | { | |
1014 | process_fmt(act, pci, t, log_track_complete(t), 0, NULL); | |
1015 | } | |
1016 | ||
1017 | static void log_queue(struct per_cpu_info *pci, struct blk_io_trace *t, | |
1018 | char *act) | |
1019 | { | |
1020 | process_fmt(act, pci, t, log_track_queue(t), 0, NULL); | |
1021 | } | |
2e3e8ded | 1022 | |
ab197ca7 AB |
1023 | static void log_issue(struct per_cpu_info *pci, struct blk_io_trace *t, |
1024 | char *act) | |
1025 | { | |
1026 | process_fmt(act, pci, t, log_track_issue(t), 0, NULL); | |
d0ca268b JA |
1027 | } |
1028 | ||
d5396421 | 1029 | static void log_merge(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 1030 | char *act) |
d0ca268b | 1031 | { |
a01516de JA |
1032 | if (act[0] == 'F') |
1033 | log_track_frontmerge(t); | |
2e3e8ded | 1034 | |
ab197ca7 | 1035 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
d0ca268b JA |
1036 | } |
1037 | ||
dfe34da1 | 1038 | static void log_action(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 1039 | char *act) |
dfe34da1 | 1040 | { |
ab197ca7 | 1041 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
dfe34da1 JA |
1042 | } |
1043 | ||
d5396421 | 1044 | static void log_generic(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 1045 | char *act) |
d0ca268b | 1046 | { |
ab197ca7 | 1047 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
d0ca268b JA |
1048 | } |
1049 | ||
ab197ca7 | 1050 | static void log_unplug(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 1051 | char *act) |
67e14fdc | 1052 | { |
ab197ca7 | 1053 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
67e14fdc JA |
1054 | } |
1055 | ||
ab197ca7 | 1056 | static void log_pc(struct per_cpu_info *pci, struct blk_io_trace *t, char *act) |
d0ca268b | 1057 | { |
ab197ca7 | 1058 | unsigned char *buf = (unsigned char *) t + sizeof(*t); |
d0ca268b | 1059 | |
ab197ca7 | 1060 | process_fmt(act, pci, t, -1ULL, t->pdu_len, buf); |
d0ca268b JA |
1061 | } |
1062 | ||
d5396421 | 1063 | static int dump_trace_pc(struct blk_io_trace *t, struct per_cpu_info *pci) |
d0ca268b | 1064 | { |
87b72777 JA |
1065 | int ret = 0; |
1066 | ||
d0ca268b JA |
1067 | switch (t->action & 0xffff) { |
1068 | case __BLK_TA_QUEUE: | |
3639a11e | 1069 | log_generic(pci, t, "Q"); |
d0ca268b JA |
1070 | break; |
1071 | case __BLK_TA_GETRQ: | |
3639a11e | 1072 | log_generic(pci, t, "G"); |
d0ca268b JA |
1073 | break; |
1074 | case __BLK_TA_SLEEPRQ: | |
3639a11e | 1075 | log_generic(pci, t, "S"); |
d0ca268b JA |
1076 | break; |
1077 | case __BLK_TA_REQUEUE: | |
3639a11e | 1078 | log_generic(pci, t, "R"); |
d0ca268b JA |
1079 | break; |
1080 | case __BLK_TA_ISSUE: | |
ab197ca7 | 1081 | log_pc(pci, t, "D"); |
d0ca268b JA |
1082 | break; |
1083 | case __BLK_TA_COMPLETE: | |
3639a11e | 1084 | log_pc(pci, t, "C"); |
d0ca268b JA |
1085 | break; |
1086 | default: | |
1087 | fprintf(stderr, "Bad pc action %x\n", t->action); | |
87b72777 JA |
1088 | ret = 1; |
1089 | break; | |
d0ca268b JA |
1090 | } |
1091 | ||
ab197ca7 | 1092 | return 0; |
d0ca268b JA |
1093 | } |
1094 | ||
d5396421 | 1095 | static void dump_trace_fs(struct blk_io_trace *t, struct per_cpu_info *pci) |
d0ca268b JA |
1096 | { |
1097 | int w = t->action & BLK_TC_ACT(BLK_TC_WRITE); | |
7997c5b0 | 1098 | int act = t->action & 0xffff; |
d0ca268b | 1099 | |
7997c5b0 | 1100 | switch (act) { |
d0ca268b | 1101 | case __BLK_TA_QUEUE: |
152f6476 | 1102 | account_q(t, pci, w); |
3639a11e | 1103 | log_queue(pci, t, "Q"); |
d0ca268b JA |
1104 | break; |
1105 | case __BLK_TA_BACKMERGE: | |
152f6476 | 1106 | account_m(t, pci, w); |
3639a11e | 1107 | log_merge(pci, t, "M"); |
d0ca268b JA |
1108 | break; |
1109 | case __BLK_TA_FRONTMERGE: | |
152f6476 | 1110 | account_m(t, pci, w); |
3639a11e | 1111 | log_merge(pci, t, "F"); |
d0ca268b JA |
1112 | break; |
1113 | case __BLK_TA_GETRQ: | |
95c15013 | 1114 | log_track_getrq(t); |
3639a11e | 1115 | log_generic(pci, t, "G"); |
d0ca268b JA |
1116 | break; |
1117 | case __BLK_TA_SLEEPRQ: | |
3639a11e | 1118 | log_generic(pci, t, "S"); |
d0ca268b JA |
1119 | break; |
1120 | case __BLK_TA_REQUEUE: | |
152f6476 | 1121 | account_c(t, pci, w, -t->bytes); |
3639a11e | 1122 | log_queue(pci, t, "R"); |
d0ca268b JA |
1123 | break; |
1124 | case __BLK_TA_ISSUE: | |
152f6476 | 1125 | account_i(t, pci, w); |
3639a11e | 1126 | log_issue(pci, t, "D"); |
d0ca268b JA |
1127 | break; |
1128 | case __BLK_TA_COMPLETE: | |
152f6476 | 1129 | account_c(t, pci, w, t->bytes); |
3639a11e | 1130 | log_complete(pci, t, "C"); |
d0ca268b | 1131 | break; |
88b1a526 | 1132 | case __BLK_TA_PLUG: |
3639a11e | 1133 | log_action(pci, t, "P"); |
88b1a526 | 1134 | break; |
3639a11e | 1135 | case __BLK_TA_UNPLUG_IO: |
06639b27 | 1136 | account_unplug(t, pci, 0); |
3639a11e JA |
1137 | log_unplug(pci, t, "U"); |
1138 | break; | |
1139 | case __BLK_TA_UNPLUG_TIMER: | |
06639b27 | 1140 | account_unplug(t, pci, 1); |
3639a11e | 1141 | log_unplug(pci, t, "UT"); |
88b1a526 | 1142 | break; |
d0ca268b JA |
1143 | default: |
1144 | fprintf(stderr, "Bad fs action %x\n", t->action); | |
1f79c4a0 | 1145 | break; |
d0ca268b | 1146 | } |
d0ca268b JA |
1147 | } |
1148 | ||
e7c9f3ff NS |
1149 | static int dump_trace(struct blk_io_trace *t, struct per_cpu_info *pci, |
1150 | struct per_dev_info *pdi) | |
d0ca268b | 1151 | { |
87b72777 JA |
1152 | int ret = 0; |
1153 | ||
d0ca268b | 1154 | if (t->action & BLK_TC_ACT(BLK_TC_PC)) |
d5396421 | 1155 | ret = dump_trace_pc(t, pci); |
d0ca268b | 1156 | else |
d5396421 | 1157 | dump_trace_fs(t, pci); |
87b72777 | 1158 | |
e7c9f3ff | 1159 | pdi->events++; |
87b72777 | 1160 | return ret; |
d0ca268b JA |
1161 | } |
1162 | ||
152f6476 | 1163 | static void dump_io_stats(struct io_stats *ios, char *msg) |
5c017e4b | 1164 | { |
152f6476 JA |
1165 | fprintf(ofp, "%s\n", msg); |
1166 | ||
1167 | fprintf(ofp, " Reads Queued: %'8lu, %'8LuKiB\t", ios->qreads, ios->qread_kb); | |
1168 | fprintf(ofp, " Writes Queued: %'8lu, %'8LuKiB\n", ios->qwrites,ios->qwrite_kb); | |
0a6b8fc4 | 1169 | |
152f6476 JA |
1170 | fprintf(ofp, " Read Dispatches: %'8lu, %'8LuKiB\t", ios->ireads, ios->iread_kb); |
1171 | fprintf(ofp, " Write Dispatches: %'8lu, %'8LuKiB\n", ios->iwrites,ios->iwrite_kb); | |
1172 | fprintf(ofp, " Reads Completed: %'8lu, %'8LuKiB\t", ios->creads, ios->cread_kb); | |
1173 | fprintf(ofp, " Writes Completed: %'8lu, %'8LuKiB\n", ios->cwrites,ios->cwrite_kb); | |
1174 | fprintf(ofp, " Read Merges: %'8lu%8c\t", ios->mreads, ' '); | |
152f6476 | 1175 | fprintf(ofp, " Write Merges: %'8lu\n", ios->mwrites); |
06639b27 JA |
1176 | fprintf(ofp, " IO unplugs: %'8lu%8c\t", ios->io_unplugs, ' '); |
1177 | fprintf(ofp, " Timer unplugs: %'8lu\n", ios->timer_unplugs); | |
5c017e4b JA |
1178 | } |
1179 | ||
50adc0ba JA |
1180 | static void dump_wait_stats(struct per_process_info *ppi) |
1181 | { | |
b9d40d6f JA |
1182 | unsigned long rawait = ppi->longest_allocation_wait[0] / 1000; |
1183 | unsigned long rdwait = ppi->longest_dispatch_wait[0] / 1000; | |
1184 | unsigned long rcwait = ppi->longest_completion_wait[0] / 1000; | |
1185 | unsigned long wawait = ppi->longest_allocation_wait[1] / 1000; | |
1186 | unsigned long wdwait = ppi->longest_dispatch_wait[1] / 1000; | |
1187 | unsigned long wcwait = ppi->longest_completion_wait[1] / 1000; | |
1188 | ||
1189 | fprintf(ofp, " Allocation wait: %'8lu%8c\t", rawait, ' '); | |
1190 | fprintf(ofp, " Allocation wait: %'8lu\n", wawait); | |
1191 | fprintf(ofp, " Dispatch wait: %'8lu%8c\t", rdwait, ' '); | |
1192 | fprintf(ofp, " Dispatch wait: %'8lu\n", wdwait); | |
1193 | fprintf(ofp, " Completion wait: %'8lu%8c\t", rcwait, ' '); | |
1194 | fprintf(ofp, " Completion wait: %'8lu\n", wcwait); | |
50adc0ba JA |
1195 | } |
1196 | ||
152f6476 JA |
1197 | static void show_process_stats(void) |
1198 | { | |
1199 | struct per_process_info *ppi; | |
1200 | ||
1201 | ppi = ppi_list; | |
1202 | while (ppi) { | |
1203 | dump_io_stats(&ppi->io_stats, ppi->name); | |
50adc0ba | 1204 | dump_wait_stats(ppi); |
152f6476 JA |
1205 | ppi = ppi->list_next; |
1206 | } | |
1207 | ||
1208 | fprintf(ofp, "\n"); | |
1209 | } | |
1210 | ||
e7c9f3ff | 1211 | static void show_device_and_cpu_stats(void) |
d0ca268b | 1212 | { |
e7c9f3ff NS |
1213 | struct per_dev_info *pdi; |
1214 | struct per_cpu_info *pci; | |
1215 | struct io_stats total, *ios; | |
1216 | int i, j, pci_events; | |
1217 | char line[3 + 8/*cpu*/ + 2 + 32/*dev*/ + 3]; | |
1218 | char name[32]; | |
1219 | ||
1220 | for (pdi = devices, i = 0; i < ndevices; i++, pdi++) { | |
1221 | ||
1222 | memset(&total, 0, sizeof(total)); | |
1223 | pci_events = 0; | |
1224 | ||
1225 | if (i > 0) | |
1226 | fprintf(ofp, "\n"); | |
1227 | ||
1228 | for (pci = pdi->cpus, j = 0; j < pdi->ncpus; j++, pci++) { | |
1229 | if (!pci->nelems) | |
1230 | continue; | |
1231 | ||
1232 | ios = &pci->io_stats; | |
1233 | total.qreads += ios->qreads; | |
1234 | total.qwrites += ios->qwrites; | |
1235 | total.creads += ios->creads; | |
1236 | total.cwrites += ios->cwrites; | |
1237 | total.mreads += ios->mreads; | |
1238 | total.mwrites += ios->mwrites; | |
1239 | total.ireads += ios->ireads; | |
1240 | total.iwrites += ios->iwrites; | |
1241 | total.qread_kb += ios->qread_kb; | |
1242 | total.qwrite_kb += ios->qwrite_kb; | |
1243 | total.cread_kb += ios->cread_kb; | |
1244 | total.cwrite_kb += ios->cwrite_kb; | |
1245 | total.iread_kb += ios->iread_kb; | |
1246 | total.iwrite_kb += ios->iwrite_kb; | |
06639b27 JA |
1247 | total.timer_unplugs += ios->timer_unplugs; |
1248 | total.io_unplugs += ios->io_unplugs; | |
e7c9f3ff NS |
1249 | |
1250 | snprintf(line, sizeof(line) - 1, "CPU%d (%s):", | |
1251 | j, get_dev_name(pdi, name, sizeof(name))); | |
1252 | dump_io_stats(ios, line); | |
1253 | pci_events++; | |
1254 | } | |
5c017e4b | 1255 | |
e7c9f3ff NS |
1256 | if (pci_events > 1) { |
1257 | fprintf(ofp, "\n"); | |
1258 | snprintf(line, sizeof(line) - 1, "Total (%s):", | |
1259 | get_dev_name(pdi, name, sizeof(name))); | |
1260 | dump_io_stats(&total, line); | |
1261 | } | |
d0ca268b | 1262 | |
0aa8a62d JA |
1263 | fprintf(ofp, "\nEvents (%s): %'Lu entries, %'lu skips\n", |
1264 | get_dev_name(pdi, line, sizeof(line)), pdi->events, | |
1265 | pdi->skips); | |
e7c9f3ff | 1266 | } |
d0ca268b JA |
1267 | } |
1268 | ||
cb2a1a62 | 1269 | static struct blk_io_trace *find_trace(void *p, unsigned long offset) |
2ff323b0 | 1270 | { |
cb2a1a62 | 1271 | unsigned long max_offset = offset; |
2ff323b0 JA |
1272 | unsigned long off; |
1273 | struct blk_io_trace *bit; | |
1274 | __u32 magic; | |
1275 | ||
1276 | for (off = 0; off < max_offset; off++) { | |
1277 | bit = p + off; | |
1278 | ||
1279 | magic = be32_to_cpu(bit->magic); | |
1280 | if ((magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) | |
1281 | return bit; | |
1282 | } | |
1283 | ||
1284 | return NULL; | |
1285 | } | |
1286 | ||
cb2a1a62 | 1287 | static int sort_entries(void) |
8fc0abbc | 1288 | { |
e7c9f3ff | 1289 | struct per_dev_info *pdi; |
412819ce | 1290 | struct per_cpu_info *pci; |
8fc0abbc JA |
1291 | struct blk_io_trace *bit; |
1292 | struct trace *t; | |
cb2a1a62 | 1293 | int nr = 0; |
8fc0abbc | 1294 | |
cb2a1a62 | 1295 | while ((t = trace_list) != NULL) { |
412819ce | 1296 | |
cb2a1a62 JA |
1297 | trace_list = t->next; |
1298 | bit = t->bit; | |
6fe4709e | 1299 | |
8fc0abbc JA |
1300 | memset(&t->rb_node, 0, sizeof(t->rb_node)); |
1301 | ||
cb2a1a62 | 1302 | if (verify_trace(bit)) |
66fa7233 | 1303 | break; |
cb2a1a62 JA |
1304 | if (trace_rb_insert(t)) |
1305 | return -1; | |
66fa7233 | 1306 | |
cb2a1a62 JA |
1307 | pdi = get_dev_info(bit->device); |
1308 | pci = get_cpu_info(pdi, bit->cpu); | |
412819ce JA |
1309 | pci->nelems++; |
1310 | ||
cb2a1a62 | 1311 | nr++; |
6fe4709e | 1312 | } |
8fc0abbc | 1313 | |
cb2a1a62 | 1314 | return nr; |
412819ce JA |
1315 | } |
1316 | ||
f1327cc5 | 1317 | static void show_entries_rb(int piped) |
8fc0abbc | 1318 | { |
e7c9f3ff | 1319 | struct per_dev_info *pdi; |
8fc0abbc | 1320 | struct blk_io_trace *bit; |
3aabcd89 | 1321 | struct rb_node *n; |
8fc0abbc JA |
1322 | struct trace *t; |
1323 | int cpu; | |
1324 | ||
cb2a1a62 | 1325 | while ((n = rb_first(&rb_sort_root)) != NULL) { |
8fc0abbc JA |
1326 | |
1327 | t = rb_entry(n, struct trace, rb_node); | |
1328 | bit = t->bit; | |
1329 | ||
cb2a1a62 | 1330 | pdi = get_dev_info(bit->device); |
e7c9f3ff NS |
1331 | if (!pdi) { |
1332 | fprintf(stderr, "Unknown device ID? (%d,%d)\n", | |
1333 | MAJOR(bit->device), MINOR(bit->device)); | |
1334 | break; | |
1335 | } | |
d5396421 | 1336 | cpu = bit->cpu; |
e7c9f3ff NS |
1337 | if (cpu > pdi->ncpus) { |
1338 | fprintf(stderr, "Unknown CPU ID? (%d, device %d,%d)\n", | |
1339 | cpu, MAJOR(bit->device), MINOR(bit->device)); | |
87b72777 | 1340 | break; |
8fc0abbc JA |
1341 | } |
1342 | ||
cb2a1a62 JA |
1343 | /* |
1344 | * back off displaying more info if we are out of sync | |
1345 | * on SMP systems. to prevent stalling on lost events, | |
0aa8a62d | 1346 | * only allow an event to us a few times |
cb2a1a62 | 1347 | */ |
a3983763 JA |
1348 | if (bit->sequence != (pdi->last_sequence + 1)) { |
1349 | if (piped && t->skipped < 5) { | |
0aa8a62d | 1350 | t->skipped++; |
cb2a1a62 | 1351 | break; |
0aa8a62d JA |
1352 | } else { |
1353 | fprintf(stderr, "skipping from %lu to %u\n", pdi->last_sequence, bit->sequence); | |
1354 | pdi->skips++; | |
cb2a1a62 JA |
1355 | } |
1356 | } | |
1357 | ||
1358 | pdi->last_sequence = bit->sequence; | |
1359 | ||
cfab07eb | 1360 | bit->time -= genesis_time; |
46e6968b NS |
1361 | if (bit->time < stopwatch_start) |
1362 | continue; | |
1363 | if (bit->time >= stopwatch_end) | |
1364 | break; | |
8fc0abbc | 1365 | |
e7c9f3ff | 1366 | check_time(pdi, bit); |
8fc0abbc | 1367 | |
e7c9f3ff | 1368 | if (dump_trace(bit, &pdi->cpus[cpu], pdi)) |
87b72777 JA |
1369 | break; |
1370 | ||
cb2a1a62 | 1371 | rb_erase(&t->rb_node, &rb_sort_root); |
e8741a4a | 1372 | |
f1327cc5 | 1373 | if (piped) { |
e8741a4a JA |
1374 | free(bit); |
1375 | free(t); | |
1376 | } | |
cb2a1a62 | 1377 | } |
8fc0abbc JA |
1378 | } |
1379 | ||
1f79c4a0 JA |
1380 | static int read_data(int fd, void *buffer, int bytes, int block) |
1381 | { | |
1382 | int ret, bytes_left, fl; | |
1383 | void *p; | |
1384 | ||
1385 | fl = fcntl(fd, F_GETFL); | |
1386 | ||
1387 | if (!block) | |
1388 | fcntl(fd, F_SETFL, fl | O_NONBLOCK); | |
1389 | else | |
1390 | fcntl(fd, F_SETFL, fl & ~O_NONBLOCK); | |
1391 | ||
1392 | bytes_left = bytes; | |
1393 | p = buffer; | |
1394 | while (bytes_left > 0) { | |
1395 | ret = read(fd, p, bytes_left); | |
1396 | if (!ret) | |
1397 | return 1; | |
1398 | else if (ret < 0) { | |
1399 | if (errno != EAGAIN) | |
1400 | perror("read"); | |
1401 | return -1; | |
1402 | } else { | |
1403 | p += ret; | |
1404 | bytes_left -= ret; | |
1405 | } | |
1406 | } | |
1407 | ||
1408 | return 0; | |
1409 | } | |
1410 | ||
cb2a1a62 JA |
1411 | /* |
1412 | * Find the traces in 'tb' and add them to the list for sorting and | |
1413 | * displaying | |
1414 | */ | |
1415 | static int find_entries(void *tb, unsigned long size) | |
1416 | { | |
1417 | struct blk_io_trace *bit; | |
1418 | struct trace *t; | |
1419 | void *start = tb; | |
1420 | ||
1421 | while (tb - start <= size - sizeof(*bit)) { | |
1422 | bit = find_trace(tb, size - (tb - start)); | |
1423 | if (!bit) | |
1424 | break; | |
1425 | ||
1426 | t = malloc(sizeof(*t)); | |
1427 | memset(t, 0, sizeof(*t)); | |
1428 | t->bit = bit; | |
1429 | ||
f1327cc5 | 1430 | trace_to_cpu(bit); |
cb2a1a62 JA |
1431 | t->next = trace_list; |
1432 | trace_list = t; | |
1433 | ||
1434 | tb += sizeof(*bit) + bit->pdu_len; | |
1435 | } | |
1436 | ||
1437 | return 0; | |
1438 | } | |
1439 | ||
d5396421 | 1440 | static int do_file(void) |
d0ca268b | 1441 | { |
cb2a1a62 | 1442 | int i, j, nfiles = 0, nelems; |
d0ca268b | 1443 | |
e8741a4a | 1444 | for (i = 0; i < ndevices; i++) { |
e7c9f3ff | 1445 | for (j = 0;; j++, nfiles++) { |
e8741a4a | 1446 | struct per_dev_info *pdi; |
e7c9f3ff NS |
1447 | struct per_cpu_info *pci; |
1448 | struct stat st; | |
1449 | void *tb; | |
87b72777 | 1450 | |
e8741a4a | 1451 | pdi = &devices[i]; |
e7c9f3ff NS |
1452 | pci = get_cpu_info(pdi, j); |
1453 | pci->cpu = j; | |
d0ca268b | 1454 | |
e7c9f3ff NS |
1455 | snprintf(pci->fname, sizeof(pci->fname)-1, |
1456 | "%s_out.%d", pdi->name, j); | |
1457 | if (stat(pci->fname, &st) < 0) | |
1458 | break; | |
1459 | if (!st.st_size) | |
1460 | continue; | |
1461 | ||
1462 | printf("Processing %s\n", pci->fname); | |
1463 | ||
1464 | tb = malloc(st.st_size); | |
1465 | if (!tb) { | |
1466 | fprintf(stderr, "Out of memory, skip file %s\n", | |
1467 | pci->fname); | |
1468 | continue; | |
1469 | } | |
1470 | ||
1471 | pci->fd = open(pci->fname, O_RDONLY); | |
1472 | if (pci->fd < 0) { | |
1473 | perror(pci->fname); | |
1474 | free(tb); | |
1475 | continue; | |
1476 | } | |
1477 | ||
1478 | if (read_data(pci->fd, tb, st.st_size, 1)) { | |
1479 | close(pci->fd); | |
1480 | free(tb); | |
1481 | continue; | |
1482 | } | |
1483 | ||
cb2a1a62 JA |
1484 | if (find_entries(tb, st.st_size)) { |
1485 | close(pci->fd); | |
1486 | free(tb); | |
1487 | } | |
1488 | ||
1489 | nelems = sort_entries(); | |
1490 | if (nelems == -1) { | |
e7c9f3ff NS |
1491 | close(pci->fd); |
1492 | free(tb); | |
1493 | continue; | |
1494 | } | |
1495 | ||
1496 | printf("Completed %s (CPU%d %d, entries)\n", | |
cb2a1a62 | 1497 | pci->fname, j, nelems); |
e7c9f3ff | 1498 | close(pci->fd); |
d0ca268b | 1499 | } |
d5396421 JA |
1500 | } |
1501 | ||
1502 | if (!nfiles) { | |
1503 | fprintf(stderr, "No files found\n"); | |
1504 | return 1; | |
1505 | } | |
1506 | ||
e8741a4a | 1507 | show_entries_rb(0); |
d5396421 JA |
1508 | return 0; |
1509 | } | |
1510 | ||
cb2a1a62 | 1511 | static int read_sort_events(int fd) |
d5396421 | 1512 | { |
cb2a1a62 | 1513 | int events = 0; |
d5396421 | 1514 | |
412819ce | 1515 | do { |
cb2a1a62 JA |
1516 | struct blk_io_trace *bit; |
1517 | struct trace *t; | |
412819ce | 1518 | int pdu_len; |
51128a28 | 1519 | __u32 magic; |
d5396421 | 1520 | |
cb2a1a62 | 1521 | bit = malloc(sizeof(*bit)); |
d5396421 | 1522 | |
cb2a1a62 | 1523 | if (read_data(fd, bit, sizeof(*bit), !events)) |
c80c18a7 | 1524 | break; |
d5396421 | 1525 | |
cb2a1a62 | 1526 | magic = be32_to_cpu(bit->magic); |
51128a28 JA |
1527 | if ((magic & 0xffffff00) != BLK_IO_TRACE_MAGIC) { |
1528 | fprintf(stderr, "Bad magic %x\n", magic); | |
1529 | break; | |
1530 | } | |
1531 | ||
cb2a1a62 | 1532 | pdu_len = be16_to_cpu(bit->pdu_len); |
2ff323b0 | 1533 | if (pdu_len) { |
cb2a1a62 | 1534 | void *ptr = realloc(bit, sizeof(*bit) + pdu_len); |
d5396421 | 1535 | |
cb2a1a62 | 1536 | if (read_data(fd, ptr + sizeof(*bit), pdu_len, 1)) |
2ff323b0 | 1537 | break; |
d5396421 | 1538 | |
cb2a1a62 | 1539 | bit = ptr; |
2ff323b0 | 1540 | } |
d5396421 | 1541 | |
cb2a1a62 JA |
1542 | t = malloc(sizeof(*t)); |
1543 | memset(t, 0, sizeof(*t)); | |
1544 | t->bit = bit; | |
f1327cc5 JA |
1545 | |
1546 | trace_to_cpu(bit); | |
cb2a1a62 JA |
1547 | t->next = trace_list; |
1548 | trace_list = t; | |
1549 | ||
412819ce | 1550 | events++; |
79f19470 | 1551 | } while (!is_done() && events < rb_batch); |
d5396421 | 1552 | |
412819ce JA |
1553 | return events; |
1554 | } | |
d5396421 | 1555 | |
412819ce JA |
1556 | static int do_stdin(void) |
1557 | { | |
1558 | int fd; | |
d5396421 | 1559 | |
1f79c4a0 | 1560 | fd = dup(STDIN_FILENO); |
412819ce JA |
1561 | do { |
1562 | int events; | |
d5396421 | 1563 | |
cb2a1a62 | 1564 | events = read_sort_events(fd); |
412819ce JA |
1565 | if (!events) |
1566 | break; | |
1567 | ||
cb2a1a62 | 1568 | if (sort_entries() == -1) |
2ff323b0 JA |
1569 | break; |
1570 | ||
e8741a4a | 1571 | show_entries_rb(1); |
d5396421 JA |
1572 | } while (1); |
1573 | ||
1574 | close(fd); | |
d5396421 JA |
1575 | return 0; |
1576 | } | |
d0ca268b | 1577 | |
1f79c4a0 | 1578 | static void flush_output(void) |
412819ce | 1579 | { |
152f6476 | 1580 | fflush(ofp); |
412819ce JA |
1581 | } |
1582 | ||
1f79c4a0 | 1583 | static void handle_sigint(int sig) |
412819ce JA |
1584 | { |
1585 | done = 1; | |
1586 | flush_output(); | |
1587 | } | |
1588 | ||
46e6968b NS |
1589 | /* |
1590 | * Extract start and duration times from a string, allowing | |
1591 | * us to specify a time interval of interest within a trace. | |
1592 | * Format: "duration" (start is zero) or "start:duration". | |
1593 | */ | |
1594 | static int find_stopwatch_interval(char *string) | |
1595 | { | |
1596 | double value; | |
1597 | char *sp; | |
1598 | ||
1599 | value = strtod(string, &sp); | |
1600 | if (sp == string) { | |
1601 | fprintf(stderr,"Invalid stopwatch timer: %s\n", string); | |
1602 | return 1; | |
1603 | } | |
1604 | if (*sp == ':') { | |
1605 | stopwatch_start = DOUBLE_TO_NANO_ULL(value); | |
1606 | string = sp + 1; | |
1607 | value = strtod(string, &sp); | |
1608 | if (sp == string || *sp != '\0') { | |
1609 | fprintf(stderr,"Invalid stopwatch duration time: %s\n", | |
1610 | string); | |
1611 | return 1; | |
1612 | } | |
1613 | } else if (*sp != '\0') { | |
1614 | fprintf(stderr,"Invalid stopwatch start timer: %s\n", string); | |
1615 | return 1; | |
1616 | } | |
1617 | stopwatch_end = stopwatch_start + DOUBLE_TO_NANO_ULL(value); | |
1618 | return 0; | |
1619 | } | |
1620 | ||
1f79c4a0 JA |
1621 | static void usage(char *prog) |
1622 | { | |
46e6968b NS |
1623 | fprintf(stderr, "Usage: %s " |
1624 | "[-i <name>] [-o <output>] [-s] [-w N[:n]] <name>...\n", | |
1625 | prog); | |
1f79c4a0 JA |
1626 | } |
1627 | ||
d5396421 JA |
1628 | int main(int argc, char *argv[]) |
1629 | { | |
152f6476 | 1630 | char *ofp_buffer; |
a66877e6 | 1631 | int c, ret, mode; |
1e1c60f1 | 1632 | int per_device_and_cpu_stats = 1; |
d5396421 JA |
1633 | |
1634 | while ((c = getopt_long(argc, argv, S_OPTS, l_opts, NULL)) != -1) { | |
1635 | switch (c) { | |
1636 | case 'i': | |
e7c9f3ff NS |
1637 | if (!strcmp(optarg, "-") && !pipeline) |
1638 | pipeline = 1; | |
1639 | else if (resize_devices(optarg) != 0) | |
1640 | return 1; | |
d5396421 JA |
1641 | break; |
1642 | case 'o': | |
66efebf8 | 1643 | output_name = optarg; |
d5396421 | 1644 | break; |
79f19470 JA |
1645 | case 'b': |
1646 | rb_batch = atoi(optarg); | |
1647 | if (rb_batch <= 0) | |
1648 | rb_batch = RB_BATCH_DEFAULT; | |
1649 | break; | |
152f6476 JA |
1650 | case 's': |
1651 | per_process_stats = 1; | |
1652 | break; | |
7997c5b0 JA |
1653 | case 't': |
1654 | track_ios = 1; | |
1655 | break; | |
1e1c60f1 NS |
1656 | case 'q': |
1657 | per_device_and_cpu_stats = 0; | |
1658 | break; | |
46e6968b NS |
1659 | case 'w': |
1660 | if (find_stopwatch_interval(optarg) != 0) | |
1661 | return 1; | |
1662 | break; | |
ab197ca7 AB |
1663 | case 'f': |
1664 | set_all_format_specs(optarg); | |
1665 | break; | |
1666 | case 'F': | |
1667 | if (add_format_spec(optarg) != 0) | |
1668 | return 1; | |
1669 | break; | |
d5396421 | 1670 | default: |
1f79c4a0 | 1671 | usage(argv[0]); |
d5396421 JA |
1672 | return 1; |
1673 | } | |
d0ca268b JA |
1674 | } |
1675 | ||
e7c9f3ff NS |
1676 | while (optind < argc) { |
1677 | if (!strcmp(argv[optind], "-") && !pipeline) | |
1678 | pipeline = 1; | |
1679 | else if (resize_devices(argv[optind]) != 0) | |
1680 | return 1; | |
1681 | optind++; | |
1682 | } | |
1683 | ||
1684 | if (!pipeline && !ndevices) { | |
1f79c4a0 | 1685 | usage(argv[0]); |
d5396421 JA |
1686 | return 1; |
1687 | } | |
1688 | ||
7997c5b0 JA |
1689 | memset(&rb_sort_root, 0, sizeof(rb_sort_root)); |
1690 | memset(&rb_track_root, 0, sizeof(rb_track_root)); | |
412819ce JA |
1691 | |
1692 | signal(SIGINT, handle_sigint); | |
1693 | signal(SIGHUP, handle_sigint); | |
1694 | signal(SIGTERM, handle_sigint); | |
d5396421 | 1695 | |
d69db225 JA |
1696 | setlocale(LC_NUMERIC, "en_US"); |
1697 | ||
a66877e6 | 1698 | if (!output_name) { |
152f6476 | 1699 | ofp = fdopen(STDOUT_FILENO, "w"); |
a66877e6 JA |
1700 | mode = _IOLBF; |
1701 | } else { | |
152f6476 JA |
1702 | char ofname[128]; |
1703 | ||
1704 | snprintf(ofname, sizeof(ofname) - 1, "%s.log", output_name); | |
1705 | ofp = fopen(ofname, "w"); | |
a66877e6 | 1706 | mode = _IOFBF; |
152f6476 JA |
1707 | } |
1708 | ||
1709 | if (!ofp) { | |
1710 | perror("fopen"); | |
1711 | return 1; | |
1712 | } | |
1713 | ||
1714 | ofp_buffer = malloc(4096); | |
a66877e6 | 1715 | if (setvbuf(ofp, ofp_buffer, mode, 4096)) { |
152f6476 JA |
1716 | perror("setvbuf"); |
1717 | return 1; | |
1718 | } | |
1719 | ||
e7c9f3ff | 1720 | if (pipeline) |
d5396421 JA |
1721 | ret = do_stdin(); |
1722 | else | |
1723 | ret = do_file(); | |
1724 | ||
152f6476 JA |
1725 | if (per_process_stats) |
1726 | show_process_stats(); | |
1727 | ||
1e1c60f1 NS |
1728 | if (per_device_and_cpu_stats) |
1729 | show_device_and_cpu_stats(); | |
152f6476 | 1730 | |
412819ce | 1731 | flush_output(); |
d5396421 | 1732 | return ret; |
d0ca268b | 1733 | } |