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> |
d0ca268b | 32 | |
8fc0abbc JA |
33 | #include "blktrace.h" |
34 | #include "rbtree.h" | |
d0ca268b | 35 | |
2e3e8ded JA |
36 | #define SECONDS(x) ((unsigned long long)(x) / 1000000000) |
37 | #define NANO_SECONDS(x) ((unsigned long long)(x) % 1000000000) | |
cfab07eb | 38 | |
d5396421 JA |
39 | static int backwards; |
40 | static unsigned long long genesis_time, last_reported_time; | |
41 | ||
152f6476 JA |
42 | struct io_stats { |
43 | unsigned long qreads, qwrites, creads, cwrites, mreads, mwrites; | |
44 | unsigned long ireads, iwrites; | |
45 | unsigned long long qread_kb, qwrite_kb, cread_kb, cwrite_kb; | |
46 | unsigned long long iread_kb, iwrite_kb; | |
47 | }; | |
48 | ||
d5396421 | 49 | struct per_cpu_info { |
d0ca268b JA |
50 | int cpu; |
51 | int nelems; | |
d0ca268b JA |
52 | |
53 | int fd; | |
87b72777 | 54 | char fname[128]; |
d0ca268b | 55 | |
152f6476 JA |
56 | struct io_stats io_stats; |
57 | }; | |
8fc0abbc | 58 | |
152f6476 JA |
59 | struct per_process_info { |
60 | char name[16]; | |
61 | __u32 pid; | |
62 | struct io_stats io_stats; | |
63 | struct per_process_info *hash_next, *list_next; | |
50adc0ba JA |
64 | |
65 | /* | |
66 | * individual io stats | |
67 | */ | |
68 | unsigned long long longest_allocation_wait; | |
69 | unsigned long long longest_dispatch_wait; | |
70 | unsigned long long longest_completion_wait; | |
d0ca268b JA |
71 | }; |
72 | ||
152f6476 JA |
73 | #define PPI_HASH_SHIFT (8) |
74 | static struct per_process_info *ppi_hash[1 << PPI_HASH_SHIFT]; | |
75 | static struct per_process_info *ppi_list; | |
76 | ||
7997c5b0 | 77 | #define S_OPTS "i:o:b:st" |
d5396421 JA |
78 | static struct option l_opts[] = { |
79 | { | |
80 | .name = "input", | |
81 | .has_arg = 1, | |
82 | .flag = NULL, | |
83 | .val = 'i' | |
84 | }, | |
85 | { | |
86 | .name = "output", | |
87 | .has_arg = 1, | |
88 | .flag = NULL, | |
89 | .val = 'o' | |
90 | }, | |
79f19470 JA |
91 | { |
92 | .name = "batch", | |
93 | .has_arg = 1, | |
94 | .flag = NULL, | |
95 | .val = 'b' | |
96 | }, | |
152f6476 JA |
97 | { |
98 | .name = "per program stats", | |
99 | .has_arg = 0, | |
100 | .flag = NULL, | |
101 | .val = 's' | |
102 | }, | |
7997c5b0 JA |
103 | { |
104 | .name = "track ios", | |
105 | .has_arg = 0, | |
106 | .flag = NULL, | |
107 | .val = 't' | |
108 | }, | |
d5396421 JA |
109 | { |
110 | .name = NULL, | |
111 | .has_arg = 0, | |
112 | .flag = NULL, | |
113 | .val = 0 | |
114 | } | |
115 | }; | |
116 | ||
7997c5b0 JA |
117 | static struct rb_root rb_sort_root; |
118 | static struct rb_root rb_track_root; | |
8fc0abbc | 119 | |
7997c5b0 JA |
120 | /* |
121 | * for sorting the displayed output | |
122 | */ | |
8fc0abbc JA |
123 | struct trace { |
124 | struct blk_io_trace *bit; | |
125 | struct rb_node rb_node; | |
126 | }; | |
127 | ||
7997c5b0 JA |
128 | /* |
129 | * for tracking individual ios | |
130 | */ | |
131 | struct io_track { | |
132 | struct rb_node rb_node; | |
133 | ||
134 | __u64 sector; | |
135 | __u32 pid; | |
95c15013 | 136 | unsigned long long allocation_time; |
7997c5b0 JA |
137 | unsigned long long queue_time; |
138 | unsigned long long dispatch_time; | |
139 | unsigned long long completion_time; | |
140 | }; | |
141 | ||
a718bd37 NS |
142 | static int max_cpus; |
143 | static struct per_cpu_info *per_cpu_info; | |
d0ca268b | 144 | |
87b72777 JA |
145 | static unsigned long long events; |
146 | ||
d5396421 | 147 | static char *dev, *output_name; |
152f6476 JA |
148 | static FILE *ofp; |
149 | ||
150 | static int per_process_stats; | |
7997c5b0 | 151 | static int track_ios; |
d0ca268b | 152 | |
79f19470 JA |
153 | #define RB_BATCH_DEFAULT (1024) |
154 | static int rb_batch = RB_BATCH_DEFAULT; | |
155 | ||
412819ce JA |
156 | #define is_done() (*(volatile int *)(&done)) |
157 | static volatile int done; | |
158 | ||
152f6476 JA |
159 | static inline unsigned long hash_long(unsigned long val) |
160 | { | |
16ef714e JA |
161 | #if __WORDSIZE == 32 |
162 | val *= 0x9e370001UL; | |
163 | #elif __WORDSIZE == 64 | |
164 | val *= 0x9e37fffffffc0001UL; | |
165 | #else | |
166 | #error unknown word size | |
167 | #endif | |
168 | ||
169 | return val >> (__WORDSIZE - PPI_HASH_SHIFT); | |
152f6476 JA |
170 | } |
171 | ||
172 | static inline void add_process_to_hash(struct per_process_info *ppi) | |
173 | { | |
174 | const int hash_idx = hash_long(ppi->pid); | |
175 | ||
176 | ppi->hash_next = ppi_hash[hash_idx]; | |
177 | ppi_hash[hash_idx] = ppi; | |
178 | } | |
179 | ||
180 | static inline void add_process_to_list(struct per_process_info *ppi) | |
181 | { | |
182 | ppi->list_next = ppi_list; | |
183 | ppi_list = ppi; | |
184 | } | |
185 | ||
186 | static struct per_process_info *find_process_by_pid(__u32 pid) | |
187 | { | |
188 | const int hash_idx = hash_long(pid); | |
189 | struct per_process_info *ppi; | |
190 | ||
191 | ppi = ppi_hash[hash_idx]; | |
192 | while (ppi) { | |
193 | if (ppi->pid == pid) | |
194 | return ppi; | |
195 | ||
196 | ppi = ppi->hash_next; | |
197 | } | |
198 | ||
199 | return NULL; | |
200 | } | |
201 | ||
7997c5b0 JA |
202 | static inline int trace_rb_insert(struct trace *t) |
203 | { | |
204 | struct rb_node **p = &rb_sort_root.rb_node; | |
205 | struct rb_node *parent = NULL; | |
206 | struct trace *__t; | |
207 | ||
208 | while (*p) { | |
209 | parent = *p; | |
210 | __t = rb_entry(parent, struct trace, rb_node); | |
211 | ||
212 | if (t->bit->sequence < __t->bit->sequence) | |
213 | p = &(*p)->rb_left; | |
214 | else if (t->bit->sequence > __t->bit->sequence) | |
215 | p = &(*p)->rb_right; | |
216 | else { | |
217 | fprintf(stderr, "sequence alias!\n"); | |
218 | return 1; | |
219 | } | |
220 | } | |
221 | ||
222 | rb_link_node(&t->rb_node, parent, p); | |
223 | rb_insert_color(&t->rb_node, &rb_sort_root); | |
224 | return 0; | |
225 | } | |
226 | ||
227 | static inline int track_rb_insert(struct io_track *iot) | |
228 | { | |
229 | struct rb_node **p = &rb_track_root.rb_node; | |
230 | struct rb_node *parent = NULL; | |
231 | struct io_track *__iot; | |
232 | ||
233 | while (*p) { | |
234 | parent = *p; | |
235 | ||
236 | __iot = rb_entry(parent, struct io_track, rb_node); | |
237 | ||
238 | if (iot->sector < __iot->sector) | |
239 | p = &(*p)->rb_left; | |
240 | else if (iot->sector > __iot->sector) | |
241 | p = &(*p)->rb_right; | |
242 | else { | |
243 | fprintf(stderr, "sequence alias!\n"); | |
244 | return 1; | |
245 | } | |
246 | } | |
247 | ||
248 | rb_link_node(&iot->rb_node, parent, p); | |
249 | rb_insert_color(&iot->rb_node, &rb_track_root); | |
250 | return 0; | |
251 | } | |
252 | ||
253 | static struct io_track *__find_track(__u64 sector) | |
254 | { | |
255 | struct rb_node **p = &rb_track_root.rb_node; | |
256 | struct rb_node *parent = NULL; | |
257 | struct io_track *__iot; | |
258 | ||
259 | while (*p) { | |
260 | parent = *p; | |
261 | ||
262 | __iot = rb_entry(parent, struct io_track, rb_node); | |
263 | ||
264 | if (sector < __iot->sector) | |
265 | p = &(*p)->rb_left; | |
266 | else if (sector > __iot->sector) | |
267 | p = &(*p)->rb_right; | |
268 | else | |
269 | return __iot; | |
270 | } | |
271 | ||
272 | return NULL; | |
273 | } | |
274 | ||
50adc0ba | 275 | static struct io_track *find_track(__u32 pid, __u64 sector) |
7997c5b0 JA |
276 | { |
277 | struct io_track *iot = __find_track(sector); | |
278 | ||
279 | iot = __find_track(sector); | |
280 | if (!iot) { | |
281 | iot = malloc(sizeof(*iot)); | |
50adc0ba | 282 | iot->pid = pid; |
7997c5b0 JA |
283 | iot->sector = sector; |
284 | track_rb_insert(iot); | |
285 | } | |
286 | ||
287 | return iot; | |
288 | } | |
289 | ||
2e3e8ded JA |
290 | static void log_track_merge(struct blk_io_trace *t) |
291 | { | |
292 | struct io_track *iot; | |
293 | ||
294 | if (!track_ios) | |
295 | return; | |
296 | if ((t->action & BLK_TC_ACT(BLK_TC_FS)) == 0) | |
297 | return; | |
298 | ||
299 | iot = __find_track(t->sector - (t->bytes >> 10)); | |
300 | if (!iot) { | |
301 | fprintf(stderr, "Trying to merge on non-existing request\n"); | |
302 | return; | |
303 | } | |
304 | ||
305 | rb_erase(&iot->rb_node, &rb_track_root); | |
306 | iot->sector -= t->bytes >> 10; | |
307 | track_rb_insert(iot); | |
308 | } | |
309 | ||
95c15013 | 310 | static void log_track_getrq(struct blk_io_trace *t) |
2e3e8ded JA |
311 | { |
312 | struct io_track *iot; | |
313 | ||
314 | if (!track_ios) | |
315 | return; | |
316 | ||
50adc0ba | 317 | iot = find_track(t->pid, t->sector); |
95c15013 JA |
318 | iot->allocation_time = t->time; |
319 | } | |
320 | ||
321 | ||
322 | /* | |
323 | * return time between rq allocation and queue | |
324 | */ | |
325 | static unsigned long long log_track_queue(struct blk_io_trace *t) | |
326 | { | |
50adc0ba | 327 | unsigned long long elapsed; |
95c15013 JA |
328 | struct io_track *iot; |
329 | ||
330 | if (!track_ios) | |
331 | return -1; | |
332 | ||
50adc0ba | 333 | iot = find_track(t->pid, t->sector); |
2e3e8ded | 334 | iot->queue_time = t->time; |
50adc0ba JA |
335 | elapsed = iot->queue_time - iot->allocation_time; |
336 | ||
337 | if (per_process_stats) { | |
338 | struct per_process_info *ppi = find_process_by_pid(iot->pid); | |
339 | ||
340 | if (ppi && elapsed > ppi->longest_allocation_wait) | |
341 | ppi->longest_allocation_wait = elapsed; | |
342 | } | |
343 | ||
344 | return elapsed; | |
2e3e8ded JA |
345 | } |
346 | ||
347 | /* | |
348 | * return time between queue and issue | |
349 | */ | |
350 | static unsigned long long log_track_issue(struct blk_io_trace *t) | |
351 | { | |
50adc0ba | 352 | unsigned long long elapsed; |
2e3e8ded JA |
353 | struct io_track *iot; |
354 | ||
355 | if (!track_ios) | |
356 | return -1; | |
357 | if ((t->action & BLK_TC_ACT(BLK_TC_FS)) == 0) | |
358 | return -1; | |
359 | ||
360 | iot = __find_track(t->sector); | |
361 | if (!iot) { | |
362 | fprintf(stderr, "Trying to issue on non-existing request\n"); | |
363 | return -1; | |
364 | } | |
365 | ||
366 | iot->dispatch_time = t->time; | |
50adc0ba JA |
367 | elapsed = iot->dispatch_time - iot->queue_time; |
368 | ||
369 | if (per_process_stats) { | |
370 | struct per_process_info *ppi = find_process_by_pid(iot->pid); | |
371 | ||
372 | if (ppi && elapsed > ppi->longest_dispatch_wait) | |
373 | ppi->longest_dispatch_wait = elapsed; | |
374 | } | |
375 | ||
376 | return elapsed; | |
2e3e8ded JA |
377 | } |
378 | ||
379 | /* | |
380 | * return time between dispatch and complete | |
381 | */ | |
382 | static unsigned long long log_track_complete(struct blk_io_trace *t) | |
383 | { | |
384 | unsigned long long elapsed; | |
385 | struct io_track *iot; | |
386 | ||
387 | if (!track_ios) | |
388 | return -1; | |
389 | if ((t->action & BLK_TC_ACT(BLK_TC_FS)) == 0) | |
390 | return -1; | |
391 | ||
392 | iot = __find_track(t->sector); | |
393 | if (!iot) { | |
394 | fprintf(stderr, "Trying to dispatch on non-existing request\n"); | |
395 | return -1; | |
396 | } | |
397 | ||
398 | iot->completion_time = t->time; | |
399 | elapsed = iot->completion_time - iot->dispatch_time; | |
400 | ||
50adc0ba JA |
401 | if (per_process_stats) { |
402 | struct per_process_info *ppi = find_process_by_pid(iot->pid); | |
403 | ||
404 | if (ppi && elapsed > ppi->longest_completion_wait) | |
405 | ppi->longest_completion_wait = elapsed; | |
406 | } | |
407 | ||
2e3e8ded JA |
408 | /* |
409 | * kill the trace, we don't need it after completion | |
410 | */ | |
411 | rb_erase(&iot->rb_node, &rb_track_root); | |
412 | free(iot); | |
413 | ||
414 | return elapsed; | |
415 | } | |
416 | ||
417 | ||
152f6476 JA |
418 | static struct io_stats *find_process_io_stats(__u32 pid, char *name) |
419 | { | |
420 | struct per_process_info *ppi = find_process_by_pid(pid); | |
421 | ||
422 | if (!ppi) { | |
423 | ppi = malloc(sizeof(*ppi)); | |
424 | memset(ppi, 0, sizeof(*ppi)); | |
425 | strncpy(ppi->name, name, sizeof(ppi->name)); | |
426 | ppi->pid = pid; | |
427 | add_process_to_hash(ppi); | |
428 | add_process_to_list(ppi); | |
429 | } | |
430 | ||
431 | return &ppi->io_stats; | |
432 | } | |
433 | ||
a718bd37 NS |
434 | static void resize_cpu_info(int cpuid) |
435 | { | |
436 | int new_space, new_max = cpuid + 1; | |
437 | char *new_start; | |
438 | ||
439 | per_cpu_info = realloc(per_cpu_info, new_max * sizeof(*per_cpu_info)); | |
440 | if (!per_cpu_info) { | |
441 | fprintf(stderr, "Cannot allocate CPU info -- %d x %d bytes\n", | |
442 | new_max, (int) sizeof(*per_cpu_info)); | |
443 | exit(1); | |
444 | } | |
445 | ||
446 | new_start = (char *)per_cpu_info + (max_cpus * sizeof(*per_cpu_info)); | |
447 | new_space = (new_max - max_cpus) * sizeof(*per_cpu_info); | |
448 | memset(new_start, 0, new_space); | |
449 | max_cpus = new_max; | |
450 | } | |
451 | ||
452 | static struct per_cpu_info *get_cpu_info(int cpu) | |
453 | { | |
c499bf38 JA |
454 | struct per_cpu_info *pci; |
455 | ||
a718bd37 NS |
456 | if (cpu >= max_cpus) |
457 | resize_cpu_info(cpu); | |
458 | ||
c499bf38 JA |
459 | /* |
460 | * ->cpu might already be set, but just set it unconditionally | |
461 | */ | |
462 | pci = &per_cpu_info[cpu]; | |
463 | pci->cpu = cpu; | |
464 | ||
465 | return pci; | |
a718bd37 NS |
466 | } |
467 | ||
cfab07eb AB |
468 | static inline void check_time(struct blk_io_trace *bit) |
469 | { | |
470 | unsigned long long this = bit->time; | |
471 | unsigned long long last = last_reported_time; | |
472 | ||
473 | backwards = (this < last) ? 'B' : ' '; | |
474 | last_reported_time = this; | |
475 | } | |
476 | ||
152f6476 JA |
477 | static inline void __account_m(struct io_stats *ios, struct blk_io_trace *t, |
478 | int rw) | |
d0ca268b JA |
479 | { |
480 | if (rw) { | |
152f6476 JA |
481 | ios->mwrites++; |
482 | ios->qwrite_kb += t->bytes >> 10; | |
d0ca268b | 483 | } else { |
152f6476 JA |
484 | ios->mreads++; |
485 | ios->qread_kb += t->bytes >> 10; | |
486 | } | |
487 | } | |
488 | ||
489 | static inline void account_m(struct blk_io_trace *t, struct per_cpu_info *pci, | |
490 | int rw) | |
491 | { | |
492 | __account_m(&pci->io_stats, t, rw); | |
493 | ||
494 | if (per_process_stats) { | |
495 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
496 | ||
497 | __account_m(ios, t, rw); | |
d0ca268b JA |
498 | } |
499 | } | |
500 | ||
152f6476 JA |
501 | static inline void __account_q(struct io_stats *ios, struct blk_io_trace *t, |
502 | int rw) | |
d0ca268b JA |
503 | { |
504 | if (rw) { | |
152f6476 JA |
505 | ios->qwrites++; |
506 | ios->qwrite_kb += t->bytes >> 10; | |
d0ca268b | 507 | } else { |
152f6476 JA |
508 | ios->qreads++; |
509 | ios->qread_kb += t->bytes >> 10; | |
510 | } | |
511 | } | |
512 | ||
513 | static inline void account_q(struct blk_io_trace *t, struct per_cpu_info *pci, | |
514 | int rw) | |
515 | { | |
516 | __account_q(&pci->io_stats, t, rw); | |
517 | ||
518 | if (per_process_stats) { | |
519 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
520 | ||
521 | __account_q(ios, t, rw); | |
d0ca268b JA |
522 | } |
523 | } | |
524 | ||
152f6476 | 525 | static inline void __account_c(struct io_stats *ios, int rw, unsigned int bytes) |
d0ca268b JA |
526 | { |
527 | if (rw) { | |
152f6476 JA |
528 | ios->cwrites++; |
529 | ios->cwrite_kb += bytes >> 10; | |
d0ca268b | 530 | } else { |
152f6476 JA |
531 | ios->creads++; |
532 | ios->cread_kb += bytes >> 10; | |
533 | } | |
534 | } | |
535 | ||
536 | static inline void account_c(struct blk_io_trace *t, struct per_cpu_info *pci, | |
537 | int rw, int bytes) | |
538 | { | |
539 | __account_c(&pci->io_stats, rw, bytes); | |
540 | ||
541 | if (per_process_stats) { | |
542 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
543 | ||
544 | __account_c(ios, rw, bytes); | |
d0ca268b JA |
545 | } |
546 | } | |
547 | ||
152f6476 | 548 | static inline void __account_i(struct io_stats *ios, int rw, unsigned int bytes) |
afd2d7ad | 549 | { |
550 | if (rw) { | |
152f6476 JA |
551 | ios->iwrites++; |
552 | ios->iwrite_kb += bytes >> 10; | |
afd2d7ad | 553 | } else { |
152f6476 JA |
554 | ios->ireads++; |
555 | ios->iread_kb += bytes >> 10; | |
afd2d7ad | 556 | } |
557 | } | |
558 | ||
152f6476 JA |
559 | static inline void account_i(struct blk_io_trace *t, struct per_cpu_info *pci, |
560 | int rw) | |
d0ca268b | 561 | { |
152f6476 JA |
562 | __account_i(&pci->io_stats, rw, t->bytes); |
563 | ||
564 | if (per_process_stats) { | |
565 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
d5396421 | 566 | |
152f6476 JA |
567 | __account_i(ios, rw, t->bytes); |
568 | } | |
569 | } | |
570 | ||
571 | static void output(struct per_cpu_info *pci, char *s) | |
572 | { | |
573 | fprintf(ofp, "%s", s); | |
d0ca268b JA |
574 | } |
575 | ||
3aabcd89 JA |
576 | static char hstring[256]; |
577 | static char tstring[256]; | |
d0ca268b | 578 | |
d5396421 JA |
579 | static inline char *setup_header(struct per_cpu_info *pci, |
580 | struct blk_io_trace *t, char act) | |
d0ca268b JA |
581 | { |
582 | int w = t->action & BLK_TC_ACT(BLK_TC_WRITE); | |
583 | int b = t->action & BLK_TC_ACT(BLK_TC_BARRIER); | |
584 | int s = t->action & BLK_TC_ACT(BLK_TC_SYNC); | |
585 | char rwbs[4]; | |
586 | int i = 0; | |
587 | ||
588 | if (w) | |
589 | rwbs[i++] = 'W'; | |
590 | else | |
591 | rwbs[i++] = 'R'; | |
592 | if (b) | |
593 | rwbs[i++] = 'B'; | |
594 | if (s) | |
595 | rwbs[i++] = 'S'; | |
596 | ||
597 | rwbs[i] = '\0'; | |
598 | ||
555d3a31 | 599 | sprintf(hstring, "%2d %8ld %5Lu.%09Lu %5u %c %3s", |
d5396421 | 600 | pci->cpu, |
cfab07eb AB |
601 | (unsigned long)t->sequence, SECONDS(t->time), |
602 | NANO_SECONDS(t->time), t->pid, act, rwbs); | |
d0ca268b JA |
603 | |
604 | return hstring; | |
605 | } | |
606 | ||
d5396421 JA |
607 | static void log_complete(struct per_cpu_info *pci, struct blk_io_trace *t, |
608 | char act) | |
d0ca268b | 609 | { |
2e3e8ded JA |
610 | unsigned long long elapsed = log_track_complete(t); |
611 | ||
612 | if (elapsed != -1ULL) { | |
613 | double usec = (double) elapsed / 1000; | |
614 | ||
555d3a31 | 615 | sprintf(tstring,"%s %Lu + %u (%8.2f) [%d]\n", |
2e3e8ded JA |
616 | setup_header(pci, t, act), |
617 | (unsigned long long)t->sector, t->bytes >> 9, | |
618 | usec, t->error); | |
619 | } else { | |
620 | sprintf(tstring,"%s %Lu + %u [%d]\n", setup_header(pci, t, act), | |
621 | (unsigned long long)t->sector, t->bytes >> 9, t->error); | |
622 | } | |
623 | ||
d5396421 | 624 | output(pci, tstring); |
d0ca268b JA |
625 | } |
626 | ||
d5396421 JA |
627 | static void log_queue(struct per_cpu_info *pci, struct blk_io_trace *t, |
628 | char act) | |
d0ca268b | 629 | { |
95c15013 | 630 | unsigned long long elapsed = log_track_queue(t); |
2e3e8ded | 631 | |
95c15013 JA |
632 | if (elapsed != -1ULL) { |
633 | double usec = (double) elapsed / 1000; | |
634 | ||
635 | sprintf(tstring,"%s %Lu + %u (%8.2f) [%s]\n", | |
636 | setup_header(pci, t, act), | |
637 | (unsigned long long)t->sector, t->bytes >> 9, | |
638 | usec, t->comm); | |
639 | } else { | |
640 | sprintf(tstring,"%s %Lu + %u [%s]\n", setup_header(pci, t, act), | |
641 | (unsigned long long)t->sector, t->bytes >> 9, t->comm); | |
642 | } | |
d5396421 | 643 | output(pci, tstring); |
d0ca268b JA |
644 | } |
645 | ||
d5396421 JA |
646 | static void log_issue(struct per_cpu_info *pci, struct blk_io_trace *t, |
647 | char act) | |
d0ca268b | 648 | { |
2e3e8ded JA |
649 | unsigned long long elapsed = log_track_issue(t); |
650 | ||
651 | if (elapsed != -1ULL) { | |
652 | double usec = (double) elapsed / 1000; | |
653 | ||
555d3a31 | 654 | sprintf(tstring,"%s %Lu + %u (%8.2f) [%s]\n", |
2e3e8ded JA |
655 | setup_header(pci, t, act), |
656 | (unsigned long long)t->sector, t->bytes >> 9, | |
657 | usec, t->comm); | |
658 | } else { | |
659 | sprintf(tstring,"%s %Lu + %u [%s]\n", setup_header(pci, t, act), | |
660 | (unsigned long long)t->sector, t->bytes >> 9, t->comm); | |
661 | } | |
662 | ||
d5396421 | 663 | output(pci, tstring); |
d0ca268b JA |
664 | } |
665 | ||
d5396421 JA |
666 | static void log_merge(struct per_cpu_info *pci, struct blk_io_trace *t, |
667 | char act) | |
d0ca268b | 668 | { |
2e3e8ded JA |
669 | log_track_merge(t); |
670 | ||
984c63b7 | 671 | sprintf(tstring,"%s %Lu + %u [%s]\n", setup_header(pci, t, act), |
2955af9d | 672 | (unsigned long long)t->sector, t->bytes >> 9, t->comm); |
d5396421 | 673 | output(pci, tstring); |
d0ca268b JA |
674 | } |
675 | ||
d5396421 JA |
676 | static void log_generic(struct per_cpu_info *pci, struct blk_io_trace *t, |
677 | char act) | |
d0ca268b | 678 | { |
2955af9d NS |
679 | sprintf(tstring,"%s %Lu + %u [%s]\n", setup_header(pci, t, act), |
680 | (unsigned long long)t->sector, t->bytes >> 9, t->comm); | |
d5396421 | 681 | output(pci, tstring); |
d0ca268b JA |
682 | } |
683 | ||
d5396421 | 684 | static int log_pc(struct per_cpu_info *pci, struct blk_io_trace *t, char act) |
d0ca268b | 685 | { |
87b72777 JA |
686 | unsigned char *buf; |
687 | int i; | |
d0ca268b | 688 | |
d5396421 JA |
689 | sprintf(tstring,"%s ", setup_header(pci, t, act)); |
690 | output(pci, tstring); | |
d0ca268b | 691 | |
87b72777 | 692 | buf = (unsigned char *) t + sizeof(*t); |
d0ca268b JA |
693 | for (i = 0; i < t->pdu_len; i++) { |
694 | sprintf(tstring,"%02x ", buf[i]); | |
d5396421 | 695 | output(pci, tstring); |
d0ca268b JA |
696 | } |
697 | ||
698 | if (act == 'C') { | |
2955af9d NS |
699 | sprintf(tstring,"[%d]\n", t->error); |
700 | output(pci, tstring); | |
701 | } else { | |
702 | sprintf(tstring,"[%s]\n", t->comm); | |
d5396421 | 703 | output(pci, tstring); |
d0ca268b | 704 | } |
87b72777 | 705 | return 0; |
d0ca268b JA |
706 | } |
707 | ||
d5396421 | 708 | static int dump_trace_pc(struct blk_io_trace *t, struct per_cpu_info *pci) |
d0ca268b | 709 | { |
87b72777 JA |
710 | int ret = 0; |
711 | ||
d0ca268b JA |
712 | switch (t->action & 0xffff) { |
713 | case __BLK_TA_QUEUE: | |
d5396421 | 714 | log_generic(pci, t, 'Q'); |
d0ca268b JA |
715 | break; |
716 | case __BLK_TA_GETRQ: | |
d5396421 | 717 | log_generic(pci, t, 'G'); |
d0ca268b JA |
718 | break; |
719 | case __BLK_TA_SLEEPRQ: | |
d5396421 | 720 | log_generic(pci, t, 'S'); |
d0ca268b JA |
721 | break; |
722 | case __BLK_TA_REQUEUE: | |
d5396421 | 723 | log_generic(pci, t, 'R'); |
d0ca268b JA |
724 | break; |
725 | case __BLK_TA_ISSUE: | |
d5396421 | 726 | ret = log_pc(pci, t, 'D'); |
d0ca268b JA |
727 | break; |
728 | case __BLK_TA_COMPLETE: | |
d5396421 | 729 | log_pc(pci, t, 'C'); |
d0ca268b JA |
730 | break; |
731 | default: | |
732 | fprintf(stderr, "Bad pc action %x\n", t->action); | |
87b72777 JA |
733 | ret = 1; |
734 | break; | |
d0ca268b JA |
735 | } |
736 | ||
87b72777 | 737 | return ret; |
d0ca268b JA |
738 | } |
739 | ||
d5396421 | 740 | static void dump_trace_fs(struct blk_io_trace *t, struct per_cpu_info *pci) |
d0ca268b JA |
741 | { |
742 | int w = t->action & BLK_TC_ACT(BLK_TC_WRITE); | |
7997c5b0 | 743 | int act = t->action & 0xffff; |
d0ca268b | 744 | |
7997c5b0 | 745 | switch (act) { |
d0ca268b | 746 | case __BLK_TA_QUEUE: |
152f6476 | 747 | account_q(t, pci, w); |
d5396421 | 748 | log_queue(pci, t, 'Q'); |
d0ca268b JA |
749 | break; |
750 | case __BLK_TA_BACKMERGE: | |
152f6476 | 751 | account_m(t, pci, w); |
d5396421 | 752 | log_merge(pci, t, 'M'); |
d0ca268b JA |
753 | break; |
754 | case __BLK_TA_FRONTMERGE: | |
152f6476 | 755 | account_m(t, pci, w); |
d5396421 | 756 | log_merge(pci, t, 'F'); |
d0ca268b JA |
757 | break; |
758 | case __BLK_TA_GETRQ: | |
95c15013 | 759 | log_track_getrq(t); |
d5396421 | 760 | log_generic(pci, t, 'G'); |
d0ca268b JA |
761 | break; |
762 | case __BLK_TA_SLEEPRQ: | |
d5396421 | 763 | log_generic(pci, t, 'S'); |
d0ca268b JA |
764 | break; |
765 | case __BLK_TA_REQUEUE: | |
152f6476 | 766 | account_c(t, pci, w, -t->bytes); |
d5396421 | 767 | log_queue(pci, t, 'R'); |
d0ca268b JA |
768 | break; |
769 | case __BLK_TA_ISSUE: | |
152f6476 | 770 | account_i(t, pci, w); |
d5396421 | 771 | log_issue(pci, t, 'D'); |
d0ca268b JA |
772 | break; |
773 | case __BLK_TA_COMPLETE: | |
152f6476 | 774 | account_c(t, pci, w, t->bytes); |
d5396421 | 775 | log_complete(pci, t, 'C'); |
d0ca268b JA |
776 | break; |
777 | default: | |
778 | fprintf(stderr, "Bad fs action %x\n", t->action); | |
1f79c4a0 | 779 | break; |
d0ca268b | 780 | } |
d0ca268b JA |
781 | } |
782 | ||
d5396421 | 783 | static int dump_trace(struct blk_io_trace *t, struct per_cpu_info *pci) |
d0ca268b | 784 | { |
87b72777 JA |
785 | int ret = 0; |
786 | ||
d0ca268b | 787 | if (t->action & BLK_TC_ACT(BLK_TC_PC)) |
d5396421 | 788 | ret = dump_trace_pc(t, pci); |
d0ca268b | 789 | else |
d5396421 | 790 | dump_trace_fs(t, pci); |
87b72777 JA |
791 | |
792 | events++; | |
793 | return ret; | |
d0ca268b JA |
794 | } |
795 | ||
152f6476 | 796 | static void dump_io_stats(struct io_stats *ios, char *msg) |
5c017e4b | 797 | { |
152f6476 JA |
798 | fprintf(ofp, "%s\n", msg); |
799 | ||
800 | fprintf(ofp, " Reads Queued: %'8lu, %'8LuKiB\t", ios->qreads, ios->qread_kb); | |
801 | fprintf(ofp, " Writes Queued: %'8lu, %'8LuKiB\n", ios->qwrites,ios->qwrite_kb); | |
0a6b8fc4 | 802 | |
152f6476 JA |
803 | fprintf(ofp, " Read Dispatches: %'8lu, %'8LuKiB\t", ios->ireads, ios->iread_kb); |
804 | fprintf(ofp, " Write Dispatches: %'8lu, %'8LuKiB\n", ios->iwrites,ios->iwrite_kb); | |
805 | fprintf(ofp, " Reads Completed: %'8lu, %'8LuKiB\t", ios->creads, ios->cread_kb); | |
806 | fprintf(ofp, " Writes Completed: %'8lu, %'8LuKiB\n", ios->cwrites,ios->cwrite_kb); | |
807 | fprintf(ofp, " Read Merges: %'8lu%8c\t", ios->mreads, ' '); | |
0a6b8fc4 | 808 | |
152f6476 | 809 | fprintf(ofp, " Write Merges: %'8lu\n", ios->mwrites); |
5c017e4b JA |
810 | } |
811 | ||
50adc0ba JA |
812 | static void dump_wait_stats(struct per_process_info *ppi) |
813 | { | |
814 | double await = (double) ppi->longest_allocation_wait / 1000; | |
815 | double dwait = (double) ppi->longest_dispatch_wait / 1000; | |
816 | double cwait = (double) ppi->longest_completion_wait / 1000; | |
817 | ||
818 | fprintf(ofp, " Wait: Alloc=%f, Dispatch=%f, Completion=%f\n", | |
819 | await, dwait, cwait); | |
820 | } | |
821 | ||
152f6476 JA |
822 | static void show_process_stats(void) |
823 | { | |
824 | struct per_process_info *ppi; | |
825 | ||
826 | ppi = ppi_list; | |
827 | while (ppi) { | |
828 | dump_io_stats(&ppi->io_stats, ppi->name); | |
50adc0ba | 829 | dump_wait_stats(ppi); |
152f6476 JA |
830 | ppi = ppi->list_next; |
831 | } | |
832 | ||
833 | fprintf(ofp, "\n"); | |
834 | } | |
835 | ||
836 | static void show_cpu_stats(void) | |
d0ca268b | 837 | { |
d5396421 | 838 | struct per_cpu_info foo, *pci; |
152f6476 | 839 | struct io_stats *ios; |
412819ce | 840 | int i, pci_events = 0; |
5c017e4b JA |
841 | |
842 | memset(&foo, 0, sizeof(foo)); | |
d0ca268b | 843 | |
a718bd37 | 844 | for (i = 0; i < max_cpus; i++) { |
152f6476 JA |
845 | char cpu[8]; |
846 | ||
d5396421 | 847 | pci = &per_cpu_info[i]; |
152f6476 | 848 | ios = &pci->io_stats; |
5c017e4b | 849 | |
d5396421 | 850 | if (!pci->nelems) |
afd2d7ad | 851 | continue; |
852 | ||
152f6476 JA |
853 | foo.io_stats.qreads += ios->qreads; |
854 | foo.io_stats.qwrites += ios->qwrites; | |
855 | foo.io_stats.creads += ios->creads; | |
856 | foo.io_stats.cwrites += ios->cwrites; | |
857 | foo.io_stats.mreads += ios->mreads; | |
858 | foo.io_stats.mwrites += ios->mwrites; | |
11e51068 NS |
859 | foo.io_stats.ireads += ios->ireads; |
860 | foo.io_stats.iwrites += ios->iwrites; | |
152f6476 JA |
861 | foo.io_stats.qread_kb += ios->qread_kb; |
862 | foo.io_stats.qwrite_kb += ios->qwrite_kb; | |
863 | foo.io_stats.cread_kb += ios->cread_kb; | |
864 | foo.io_stats.cwrite_kb += ios->cwrite_kb; | |
11e51068 NS |
865 | foo.io_stats.iread_kb += ios->iread_kb; |
866 | foo.io_stats.iwrite_kb += ios->iwrite_kb; | |
152f6476 JA |
867 | |
868 | snprintf(cpu, sizeof(cpu) - 1, "CPU%d:", i); | |
869 | dump_io_stats(ios, cpu); | |
412819ce | 870 | pci_events++; |
5c017e4b JA |
871 | } |
872 | ||
412819ce | 873 | if (pci_events > 1) { |
152f6476 JA |
874 | fprintf(ofp, "\n"); |
875 | dump_io_stats(&foo.io_stats, "Total:"); | |
5c017e4b | 876 | } |
d0ca268b | 877 | |
152f6476 | 878 | fprintf(ofp, "\nEvents: %'Lu\n", events); |
d0ca268b JA |
879 | } |
880 | ||
2ff323b0 JA |
881 | #define min(a, b) ((a) < (b) ? (a) : (b)) |
882 | ||
883 | static struct blk_io_trace *find_trace(void *p, unsigned long offset, int nr) | |
884 | { | |
885 | unsigned long max_offset = min(offset,nr * sizeof(struct blk_io_trace)); | |
886 | unsigned long off; | |
887 | struct blk_io_trace *bit; | |
888 | __u32 magic; | |
889 | ||
890 | for (off = 0; off < max_offset; off++) { | |
891 | bit = p + off; | |
892 | ||
893 | magic = be32_to_cpu(bit->magic); | |
894 | if ((magic & 0xffffff00) == BLK_IO_TRACE_MAGIC) | |
895 | return bit; | |
896 | } | |
897 | ||
898 | return NULL; | |
899 | } | |
900 | ||
412819ce | 901 | static int sort_entries(void *traces, unsigned long offset, int nr) |
8fc0abbc | 902 | { |
412819ce | 903 | struct per_cpu_info *pci; |
8fc0abbc JA |
904 | struct blk_io_trace *bit; |
905 | struct trace *t; | |
906 | void *start = traces; | |
907 | int nelems = 0; | |
908 | ||
6fe4709e | 909 | while (traces - start <= offset - sizeof(*bit)) { |
412819ce JA |
910 | if (!nr) |
911 | break; | |
912 | ||
2ff323b0 JA |
913 | bit = find_trace(traces, offset - (traces - start), nr); |
914 | if (!bit) | |
915 | break; | |
6fe4709e | 916 | |
8fc0abbc JA |
917 | t = malloc(sizeof(*t)); |
918 | t->bit = bit; | |
919 | memset(&t->rb_node, 0, sizeof(t->rb_node)); | |
920 | ||
6fe4709e JA |
921 | trace_to_cpu(bit); |
922 | ||
66fa7233 JA |
923 | if (verify_trace(bit)) |
924 | break; | |
925 | ||
a718bd37 | 926 | pci = get_cpu_info(bit->cpu); |
412819ce JA |
927 | pci->nelems++; |
928 | ||
8fc0abbc JA |
929 | if (trace_rb_insert(t)) |
930 | return -1; | |
931 | ||
932 | traces += sizeof(*bit) + bit->pdu_len; | |
933 | nelems++; | |
412819ce | 934 | nr--; |
6fe4709e | 935 | } |
8fc0abbc JA |
936 | |
937 | return nelems; | |
938 | } | |
939 | ||
412819ce JA |
940 | static void free_entries_rb(void) |
941 | { | |
942 | struct rb_node *n; | |
943 | ||
7997c5b0 | 944 | while ((n = rb_first(&rb_sort_root)) != NULL) { |
412819ce JA |
945 | struct trace *t = rb_entry(n, struct trace, rb_node); |
946 | ||
7997c5b0 | 947 | rb_erase(&t->rb_node, &rb_sort_root); |
412819ce JA |
948 | free(t); |
949 | } | |
950 | } | |
951 | ||
d5396421 | 952 | static void show_entries_rb(void) |
8fc0abbc | 953 | { |
8fc0abbc | 954 | struct blk_io_trace *bit; |
3aabcd89 | 955 | struct rb_node *n; |
8fc0abbc JA |
956 | struct trace *t; |
957 | int cpu; | |
958 | ||
7997c5b0 | 959 | n = rb_first(&rb_sort_root); |
3aabcd89 JA |
960 | if (!n) |
961 | return; | |
8fc0abbc | 962 | |
3aabcd89 | 963 | do { |
8fc0abbc JA |
964 | t = rb_entry(n, struct trace, rb_node); |
965 | bit = t->bit; | |
966 | ||
d5396421 | 967 | cpu = bit->cpu; |
87b72777 | 968 | if (cpu > max_cpus) { |
8fc0abbc | 969 | fprintf(stderr, "CPU number too large (%d)\n", cpu); |
87b72777 | 970 | break; |
8fc0abbc JA |
971 | } |
972 | ||
cfab07eb AB |
973 | if (genesis_time == 0) |
974 | genesis_time = bit->time; | |
975 | bit->time -= genesis_time; | |
8fc0abbc | 976 | |
cfab07eb | 977 | check_time(bit); |
8fc0abbc | 978 | |
d5396421 | 979 | if (dump_trace(bit, &per_cpu_info[cpu])) |
87b72777 JA |
980 | break; |
981 | ||
8fc0abbc JA |
982 | } while ((n = rb_next(n)) != NULL); |
983 | } | |
984 | ||
1f79c4a0 JA |
985 | static int read_data(int fd, void *buffer, int bytes, int block) |
986 | { | |
987 | int ret, bytes_left, fl; | |
988 | void *p; | |
989 | ||
990 | fl = fcntl(fd, F_GETFL); | |
991 | ||
992 | if (!block) | |
993 | fcntl(fd, F_SETFL, fl | O_NONBLOCK); | |
994 | else | |
995 | fcntl(fd, F_SETFL, fl & ~O_NONBLOCK); | |
996 | ||
997 | bytes_left = bytes; | |
998 | p = buffer; | |
999 | while (bytes_left > 0) { | |
1000 | ret = read(fd, p, bytes_left); | |
1001 | if (!ret) | |
1002 | return 1; | |
1003 | else if (ret < 0) { | |
1004 | if (errno != EAGAIN) | |
1005 | perror("read"); | |
1006 | return -1; | |
1007 | } else { | |
1008 | p += ret; | |
1009 | bytes_left -= ret; | |
1010 | } | |
1011 | } | |
1012 | ||
1013 | return 0; | |
1014 | } | |
1015 | ||
d5396421 | 1016 | static int do_file(void) |
d0ca268b | 1017 | { |
a718bd37 | 1018 | int i, nfiles; |
d0ca268b | 1019 | |
a718bd37 NS |
1020 | for (i = 0, nfiles = 0;; i++, nfiles++) { |
1021 | struct per_cpu_info *pci; | |
87b72777 JA |
1022 | struct stat st; |
1023 | void *tb; | |
1024 | ||
a718bd37 | 1025 | pci = get_cpu_info(i); |
d0ca268b | 1026 | |
d5396421 JA |
1027 | snprintf(pci->fname, sizeof(pci->fname)-1,"%s_out.%d", dev, i); |
1028 | if (stat(pci->fname, &st) < 0) | |
d0ca268b | 1029 | break; |
afd2d7ad | 1030 | if (!st.st_size) |
1031 | continue; | |
d0ca268b | 1032 | |
d5396421 | 1033 | printf("Processing %s\n", pci->fname); |
8fc0abbc | 1034 | |
87b72777 | 1035 | tb = malloc(st.st_size); |
8fc0abbc | 1036 | |
d5396421 JA |
1037 | pci->fd = open(pci->fname, O_RDONLY); |
1038 | if (pci->fd < 0) { | |
1039 | perror(pci->fname); | |
3aabcd89 | 1040 | break; |
d0ca268b | 1041 | } |
afd2d7ad | 1042 | |
1f79c4a0 | 1043 | if (read_data(pci->fd, tb, st.st_size, 1)) |
3aabcd89 | 1044 | break; |
d0ca268b | 1045 | |
a718bd37 | 1046 | if (sort_entries(tb, st.st_size, ~0U) == -1) |
3aabcd89 | 1047 | break; |
d0ca268b | 1048 | |
d5396421 | 1049 | close(pci->fd); |
d5396421 JA |
1050 | printf("\t%2d %10s %15d\n", i, pci->fname, pci->nelems); |
1051 | ||
1052 | } | |
1053 | ||
1054 | if (!nfiles) { | |
1055 | fprintf(stderr, "No files found\n"); | |
1056 | return 1; | |
1057 | } | |
1058 | ||
1059 | show_entries_rb(); | |
d5396421 JA |
1060 | return 0; |
1061 | } | |
1062 | ||
2ff323b0 | 1063 | static void resize_buffer(void **buffer, long *size, long offset) |
d5396421 | 1064 | { |
2ff323b0 | 1065 | long old_size = *size; |
d5396421 | 1066 | |
2ff323b0 JA |
1067 | *size *= 2; |
1068 | *buffer = realloc(*buffer, *size); | |
1069 | memset(*buffer + offset, 0, *size - old_size); | |
412819ce | 1070 | } |
d5396421 | 1071 | |
0a94916b | 1072 | static int read_sort_events(int fd, void **buffer, long *max_offset) |
412819ce | 1073 | { |
0a94916b | 1074 | long offset; |
412819ce | 1075 | int events; |
d5396421 | 1076 | |
0a94916b JA |
1077 | if (*max_offset == 0) { |
1078 | *max_offset = 128 * sizeof(struct blk_io_trace); | |
1079 | *buffer = malloc(*max_offset); | |
1080 | } | |
1081 | ||
412819ce JA |
1082 | events = 0; |
1083 | offset = 0; | |
d5396421 | 1084 | |
412819ce JA |
1085 | do { |
1086 | struct blk_io_trace *t; | |
1087 | int pdu_len; | |
d5396421 | 1088 | |
0a94916b JA |
1089 | if (*max_offset - offset < sizeof(*t)) |
1090 | resize_buffer(buffer, max_offset, offset); | |
d5396421 | 1091 | |
412819ce JA |
1092 | if (read_data(fd, *buffer + offset, sizeof(*t), !events)) { |
1093 | if (events) | |
d5396421 | 1094 | break; |
412819ce JA |
1095 | |
1096 | usleep(1000); | |
1097 | continue; | |
d5396421 JA |
1098 | } |
1099 | ||
412819ce JA |
1100 | t = *buffer + offset; |
1101 | offset += sizeof(*t); | |
d5396421 | 1102 | |
412819ce | 1103 | pdu_len = be16_to_cpu(t->pdu_len); |
2ff323b0 | 1104 | if (pdu_len) { |
0a94916b JA |
1105 | if (*max_offset - offset < pdu_len) |
1106 | resize_buffer(buffer, max_offset, offset); | |
d5396421 | 1107 | |
2ff323b0 JA |
1108 | if (read_data(fd, *buffer + offset, pdu_len, 1)) |
1109 | break; | |
d5396421 | 1110 | |
2ff323b0 JA |
1111 | offset += pdu_len; |
1112 | } | |
d5396421 | 1113 | |
412819ce | 1114 | events++; |
79f19470 | 1115 | } while (!is_done() && events < rb_batch); |
d5396421 | 1116 | |
412819ce JA |
1117 | return events; |
1118 | } | |
d5396421 | 1119 | |
412819ce JA |
1120 | static int do_stdin(void) |
1121 | { | |
1122 | int fd; | |
1123 | void *ptr; | |
0a94916b | 1124 | long max_offset; |
d5396421 | 1125 | |
1f79c4a0 | 1126 | fd = dup(STDIN_FILENO); |
0a94916b | 1127 | max_offset = 0; |
412819ce JA |
1128 | do { |
1129 | int events; | |
d5396421 | 1130 | |
0a94916b | 1131 | events = read_sort_events(fd, &ptr, &max_offset); |
412819ce JA |
1132 | if (!events) |
1133 | break; | |
1134 | ||
2ff323b0 JA |
1135 | if (sort_entries(ptr, ~0UL, events) == -1) |
1136 | break; | |
1137 | ||
412819ce JA |
1138 | show_entries_rb(); |
1139 | free_entries_rb(); | |
d5396421 JA |
1140 | } while (1); |
1141 | ||
0a94916b | 1142 | free(ptr); |
d5396421 | 1143 | close(fd); |
d5396421 JA |
1144 | return 0; |
1145 | } | |
d0ca268b | 1146 | |
1f79c4a0 | 1147 | static void flush_output(void) |
412819ce | 1148 | { |
152f6476 | 1149 | fflush(ofp); |
412819ce JA |
1150 | } |
1151 | ||
1f79c4a0 | 1152 | static void handle_sigint(int sig) |
412819ce JA |
1153 | { |
1154 | done = 1; | |
1155 | flush_output(); | |
1156 | } | |
1157 | ||
1f79c4a0 JA |
1158 | static void usage(char *prog) |
1159 | { | |
152f6476 | 1160 | fprintf(stderr, "Usage: %s -i <name> [-o <output>][-s]\n", prog); |
1f79c4a0 JA |
1161 | } |
1162 | ||
d5396421 JA |
1163 | int main(int argc, char *argv[]) |
1164 | { | |
152f6476 | 1165 | char *ofp_buffer; |
a66877e6 | 1166 | int c, ret, mode; |
d5396421 JA |
1167 | |
1168 | while ((c = getopt_long(argc, argv, S_OPTS, l_opts, NULL)) != -1) { | |
1169 | switch (c) { | |
1170 | case 'i': | |
66efebf8 | 1171 | dev = optarg; |
d5396421 JA |
1172 | break; |
1173 | case 'o': | |
66efebf8 | 1174 | output_name = optarg; |
d5396421 | 1175 | break; |
79f19470 JA |
1176 | case 'b': |
1177 | rb_batch = atoi(optarg); | |
1178 | if (rb_batch <= 0) | |
1179 | rb_batch = RB_BATCH_DEFAULT; | |
1180 | break; | |
152f6476 JA |
1181 | case 's': |
1182 | per_process_stats = 1; | |
1183 | break; | |
7997c5b0 JA |
1184 | case 't': |
1185 | track_ios = 1; | |
1186 | break; | |
d5396421 | 1187 | default: |
1f79c4a0 | 1188 | usage(argv[0]); |
d5396421 JA |
1189 | return 1; |
1190 | } | |
d0ca268b JA |
1191 | } |
1192 | ||
d5396421 | 1193 | if (!dev) { |
1f79c4a0 | 1194 | usage(argv[0]); |
d5396421 JA |
1195 | return 1; |
1196 | } | |
1197 | ||
7997c5b0 JA |
1198 | memset(&rb_sort_root, 0, sizeof(rb_sort_root)); |
1199 | memset(&rb_track_root, 0, sizeof(rb_track_root)); | |
412819ce JA |
1200 | |
1201 | signal(SIGINT, handle_sigint); | |
1202 | signal(SIGHUP, handle_sigint); | |
1203 | signal(SIGTERM, handle_sigint); | |
d5396421 | 1204 | |
d69db225 JA |
1205 | setlocale(LC_NUMERIC, "en_US"); |
1206 | ||
a66877e6 | 1207 | if (!output_name) { |
152f6476 | 1208 | ofp = fdopen(STDOUT_FILENO, "w"); |
a66877e6 JA |
1209 | mode = _IOLBF; |
1210 | } else { | |
152f6476 JA |
1211 | char ofname[128]; |
1212 | ||
1213 | snprintf(ofname, sizeof(ofname) - 1, "%s.log", output_name); | |
1214 | ofp = fopen(ofname, "w"); | |
a66877e6 | 1215 | mode = _IOFBF; |
152f6476 JA |
1216 | } |
1217 | ||
1218 | if (!ofp) { | |
1219 | perror("fopen"); | |
1220 | return 1; | |
1221 | } | |
1222 | ||
1223 | ofp_buffer = malloc(4096); | |
a66877e6 | 1224 | if (setvbuf(ofp, ofp_buffer, mode, 4096)) { |
152f6476 JA |
1225 | perror("setvbuf"); |
1226 | return 1; | |
1227 | } | |
1228 | ||
d5396421 JA |
1229 | if (!strcmp(dev, "-")) |
1230 | ret = do_stdin(); | |
1231 | else | |
1232 | ret = do_file(); | |
1233 | ||
152f6476 JA |
1234 | if (per_process_stats) |
1235 | show_process_stats(); | |
1236 | ||
1237 | show_cpu_stats(); | |
1238 | ||
412819ce | 1239 | flush_output(); |
d5396421 | 1240 | return ret; |
d0ca268b | 1241 | } |