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