Commit | Line | Data |
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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> |
d0ca268b | 33 | |
8fc0abbc JA |
34 | #include "blktrace.h" |
35 | #include "rbtree.h" | |
bf0720af | 36 | #include "jhash.h" |
d0ca268b | 37 | |
52724a0e JA |
38 | static char blkparse_version[] = "0.90"; |
39 | ||
e7c9f3ff NS |
40 | struct per_dev_info { |
41 | dev_t id; | |
42 | char *name; | |
43 | ||
44 | int backwards; | |
45 | unsigned long long events; | |
46 | unsigned long long last_reported_time; | |
287fa3d6 | 47 | unsigned long long last_read_time; |
e7c9f3ff | 48 | struct io_stats io_stats; |
cb2a1a62 | 49 | unsigned long last_sequence; |
dcf0f7ed | 50 | unsigned long skips; |
e7c9f3ff | 51 | |
73877e12 | 52 | int nfiles; |
e7c9f3ff NS |
53 | int ncpus; |
54 | struct per_cpu_info *cpus; | |
55 | }; | |
56 | ||
152f6476 JA |
57 | struct per_process_info { |
58 | char name[16]; | |
59 | __u32 pid; | |
60 | struct io_stats io_stats; | |
61 | struct per_process_info *hash_next, *list_next; | |
715d8021 | 62 | int more_than_one; |
50adc0ba JA |
63 | |
64 | /* | |
65 | * individual io stats | |
66 | */ | |
b9d40d6f JA |
67 | unsigned long long longest_allocation_wait[2]; |
68 | unsigned long long longest_dispatch_wait[2]; | |
69 | unsigned long long longest_completion_wait[2]; | |
d0ca268b JA |
70 | }; |
71 | ||
152f6476 | 72 | #define PPI_HASH_SHIFT (8) |
bf0720af JA |
73 | #define PPI_HASH_SIZE (1 << PPI_HASH_SHIFT) |
74 | #define PPI_HASH_MASK (PPI_HASH_SIZE - 1) | |
75 | static struct per_process_info *ppi_hash_table[PPI_HASH_SIZE]; | |
152f6476 | 76 | static struct per_process_info *ppi_list; |
886ecf0e | 77 | static int ppi_list_entries; |
152f6476 | 78 | |
bf0720af | 79 | #define S_OPTS "i:o:b:stqw:f:F:vn" |
d5396421 JA |
80 | static struct option l_opts[] = { |
81 | { | |
82 | .name = "input", | |
428683db | 83 | .has_arg = required_argument, |
d5396421 JA |
84 | .flag = NULL, |
85 | .val = 'i' | |
86 | }, | |
87 | { | |
88 | .name = "output", | |
428683db | 89 | .has_arg = required_argument, |
d5396421 JA |
90 | .flag = NULL, |
91 | .val = 'o' | |
92 | }, | |
79f19470 JA |
93 | { |
94 | .name = "batch", | |
428683db | 95 | .has_arg = required_argument, |
79f19470 JA |
96 | .flag = NULL, |
97 | .val = 'b' | |
98 | }, | |
152f6476 JA |
99 | { |
100 | .name = "per program stats", | |
428683db | 101 | .has_arg = no_argument, |
152f6476 JA |
102 | .flag = NULL, |
103 | .val = 's' | |
104 | }, | |
7997c5b0 JA |
105 | { |
106 | .name = "track ios", | |
428683db | 107 | .has_arg = no_argument, |
7997c5b0 JA |
108 | .flag = NULL, |
109 | .val = 't' | |
110 | }, | |
1e1c60f1 NS |
111 | { |
112 | .name = "quiet", | |
428683db | 113 | .has_arg = no_argument, |
1e1c60f1 NS |
114 | .flag = NULL, |
115 | .val = 'q' | |
116 | }, | |
46e6968b NS |
117 | { |
118 | .name = "stopwatch", | |
428683db | 119 | .has_arg = required_argument, |
46e6968b NS |
120 | .flag = NULL, |
121 | .val = 'w' | |
122 | }, | |
ab197ca7 AB |
123 | { |
124 | .name = "format", | |
428683db | 125 | .has_arg = required_argument, |
ab197ca7 AB |
126 | .flag = NULL, |
127 | .val = 'f' | |
128 | }, | |
129 | { | |
130 | .name = "format-spec", | |
428683db | 131 | .has_arg = required_argument, |
ab197ca7 AB |
132 | .flag = NULL, |
133 | .val = 'F' | |
134 | }, | |
bf0720af JA |
135 | { |
136 | .name = "hash by name", | |
137 | .has_arg = no_argument, | |
138 | .flag = NULL, | |
139 | .val = 'n' | |
140 | }, | |
52724a0e JA |
141 | { |
142 | .name = "version", | |
143 | .has_arg = no_argument, | |
144 | .flag = NULL, | |
145 | .val = 'v' | |
146 | }, | |
d5396421 JA |
147 | }; |
148 | ||
7997c5b0 JA |
149 | /* |
150 | * for sorting the displayed output | |
151 | */ | |
8fc0abbc JA |
152 | struct trace { |
153 | struct blk_io_trace *bit; | |
154 | struct rb_node rb_node; | |
cb2a1a62 | 155 | struct trace *next; |
8fc0abbc JA |
156 | }; |
157 | ||
cb2a1a62 | 158 | static struct rb_root rb_sort_root; |
a649216c JA |
159 | static unsigned long rb_sort_entries; |
160 | ||
cb2a1a62 JA |
161 | static struct rb_root rb_track_root; |
162 | ||
163 | static struct trace *trace_list; | |
164 | ||
d36421e4 JA |
165 | /* |
166 | * allocation cache | |
167 | */ | |
168 | static struct blk_io_trace *bit_alloc_list; | |
169 | static struct trace *t_alloc_list; | |
170 | ||
7997c5b0 JA |
171 | /* |
172 | * for tracking individual ios | |
173 | */ | |
174 | struct io_track { | |
175 | struct rb_node rb_node; | |
176 | ||
e7c9f3ff | 177 | dev_t device; |
7997c5b0 JA |
178 | __u64 sector; |
179 | __u32 pid; | |
bf0720af | 180 | char comm[16]; |
95c15013 | 181 | unsigned long long allocation_time; |
7997c5b0 JA |
182 | unsigned long long queue_time; |
183 | unsigned long long dispatch_time; | |
184 | unsigned long long completion_time; | |
185 | }; | |
186 | ||
e7c9f3ff NS |
187 | static int ndevices; |
188 | static struct per_dev_info *devices; | |
189 | static char *get_dev_name(struct per_dev_info *, char *, int); | |
d0ca268b | 190 | |
71d5d4c9 | 191 | FILE *ofp = NULL; |
e7c9f3ff NS |
192 | static char *output_name; |
193 | ||
194 | static unsigned long long genesis_time; | |
287fa3d6 | 195 | static unsigned long long last_allowed_time; |
46e6968b NS |
196 | static unsigned long long stopwatch_start; /* start from zero by default */ |
197 | static unsigned long long stopwatch_end = ULONG_LONG_MAX; /* "infinity" */ | |
152f6476 JA |
198 | |
199 | static int per_process_stats; | |
7997c5b0 | 200 | static int track_ios; |
bf0720af | 201 | static int ppi_hash_by_pid = 1; |
d0ca268b | 202 | |
7d747d22 | 203 | #define RB_BATCH_DEFAULT (512) |
79f19470 JA |
204 | static int rb_batch = RB_BATCH_DEFAULT; |
205 | ||
e7c9f3ff NS |
206 | static int pipeline; |
207 | ||
412819ce JA |
208 | #define is_done() (*(volatile int *)(&done)) |
209 | static volatile int done; | |
210 | ||
bf0720af JA |
211 | #define JHASH_RANDOM (0x3af5f2ee) |
212 | ||
213 | static inline int ppi_hash_pid(__u32 pid) | |
214 | { | |
215 | return jhash_1word(pid, JHASH_RANDOM) & PPI_HASH_MASK; | |
216 | } | |
217 | ||
218 | static inline int ppi_hash_name(const char *name) | |
152f6476 | 219 | { |
bf0720af JA |
220 | return jhash(name, 16, JHASH_RANDOM) & PPI_HASH_MASK; |
221 | } | |
222 | ||
223 | static inline int ppi_hash(struct per_process_info *ppi) | |
224 | { | |
225 | if (ppi_hash_by_pid) | |
226 | return ppi_hash_pid(ppi->pid); | |
227 | ||
bf0720af | 228 | return ppi_hash_name(ppi->name); |
152f6476 JA |
229 | } |
230 | ||
231 | static inline void add_process_to_hash(struct per_process_info *ppi) | |
232 | { | |
bf0720af | 233 | const int hash_idx = ppi_hash(ppi); |
152f6476 | 234 | |
bf0720af JA |
235 | ppi->hash_next = ppi_hash_table[hash_idx]; |
236 | ppi_hash_table[hash_idx] = ppi; | |
152f6476 JA |
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; | |
886ecf0e | 243 | ppi_list_entries++; |
152f6476 JA |
244 | } |
245 | ||
bf0720af JA |
246 | static struct per_process_info *find_process_by_name(char *name) |
247 | { | |
248 | const int hash_idx = ppi_hash_name(name); | |
249 | struct per_process_info *ppi; | |
250 | ||
251 | ppi = ppi_hash_table[hash_idx]; | |
252 | while (ppi) { | |
253 | if (!strcmp(ppi->name, name)) | |
254 | return ppi; | |
255 | ||
256 | ppi = ppi->hash_next; | |
257 | } | |
258 | ||
259 | return NULL; | |
260 | } | |
261 | ||
152f6476 JA |
262 | static struct per_process_info *find_process_by_pid(__u32 pid) |
263 | { | |
bf0720af | 264 | const int hash_idx = ppi_hash_pid(pid); |
152f6476 JA |
265 | struct per_process_info *ppi; |
266 | ||
bf0720af | 267 | ppi = ppi_hash_table[hash_idx]; |
152f6476 JA |
268 | while (ppi) { |
269 | if (ppi->pid == pid) | |
270 | return ppi; | |
271 | ||
272 | ppi = ppi->hash_next; | |
273 | } | |
274 | ||
275 | return NULL; | |
276 | } | |
277 | ||
bf0720af JA |
278 | static struct per_process_info *find_process(__u32 pid, char *name) |
279 | { | |
715d8021 JA |
280 | struct per_process_info *ppi; |
281 | ||
bf0720af JA |
282 | if (ppi_hash_by_pid) |
283 | return find_process_by_pid(pid); | |
284 | ||
715d8021 JA |
285 | ppi = find_process_by_name(name); |
286 | if (ppi && ppi->pid != pid) | |
287 | ppi->more_than_one = 1; | |
288 | ||
289 | return ppi; | |
bf0720af JA |
290 | } |
291 | ||
7997c5b0 JA |
292 | static inline int trace_rb_insert(struct trace *t) |
293 | { | |
294 | struct rb_node **p = &rb_sort_root.rb_node; | |
295 | struct rb_node *parent = NULL; | |
296 | struct trace *__t; | |
297 | ||
298 | while (*p) { | |
299 | parent = *p; | |
300 | __t = rb_entry(parent, struct trace, rb_node); | |
301 | ||
dcf0f7ed | 302 | if (t->bit->time < __t->bit->time) |
e7c9f3ff NS |
303 | p = &(*p)->rb_left; |
304 | else if (t->bit->time > __t->bit->time) | |
305 | p = &(*p)->rb_right; | |
306 | else if (t->bit->device < __t->bit->device) | |
307 | p = &(*p)->rb_left; | |
308 | else if (t->bit->device > __t->bit->device) | |
309 | p = &(*p)->rb_right; | |
dcf0f7ed JA |
310 | else if (t->bit->sequence < __t->bit->sequence) |
311 | p = &(*p)->rb_left; | |
312 | else if (t->bit->sequence > __t->bit->sequence) | |
313 | p = &(*p)->rb_right; | |
e7c9f3ff NS |
314 | else if (t->bit->device == __t->bit->device) { |
315 | fprintf(stderr, | |
316 | "sequence alias (%d) on device %d,%d!\n", | |
317 | t->bit->sequence, | |
318 | MAJOR(t->bit->device), MINOR(t->bit->device)); | |
7997c5b0 JA |
319 | return 1; |
320 | } | |
321 | } | |
322 | ||
a649216c | 323 | rb_sort_entries++; |
7997c5b0 JA |
324 | rb_link_node(&t->rb_node, parent, p); |
325 | rb_insert_color(&t->rb_node, &rb_sort_root); | |
326 | return 0; | |
327 | } | |
328 | ||
0583b6a2 | 329 | static struct trace *trace_rb_find(dev_t device, unsigned long sequence) |
e3556946 JA |
330 | { |
331 | struct rb_node **p = &rb_sort_root.rb_node; | |
332 | struct rb_node *parent = NULL; | |
333 | struct trace *__t; | |
334 | ||
335 | while (*p) { | |
336 | parent = *p; | |
337 | __t = rb_entry(parent, struct trace, rb_node); | |
338 | ||
0583b6a2 JA |
339 | if (device < __t->bit->device) |
340 | p = &(*p)->rb_left; | |
341 | else if (device > __t->bit->device) | |
342 | p = &(*p)->rb_right; | |
343 | else if (sequence < __t->bit->sequence) | |
e3556946 JA |
344 | p = &(*p)->rb_left; |
345 | else if (sequence > __t->bit->sequence) | |
346 | p = &(*p)->rb_right; | |
347 | else | |
348 | return __t; | |
349 | } | |
350 | ||
351 | return NULL; | |
352 | } | |
353 | ||
7997c5b0 JA |
354 | static inline int track_rb_insert(struct io_track *iot) |
355 | { | |
356 | struct rb_node **p = &rb_track_root.rb_node; | |
357 | struct rb_node *parent = NULL; | |
358 | struct io_track *__iot; | |
359 | ||
360 | while (*p) { | |
361 | parent = *p; | |
e7c9f3ff | 362 | |
7997c5b0 JA |
363 | __iot = rb_entry(parent, struct io_track, rb_node); |
364 | ||
e7c9f3ff NS |
365 | if (iot->device < __iot->device) |
366 | p = &(*p)->rb_left; | |
367 | else if (iot->device > __iot->device) | |
368 | p = &(*p)->rb_right; | |
369 | else if (iot->sector < __iot->sector) | |
7997c5b0 JA |
370 | p = &(*p)->rb_left; |
371 | else if (iot->sector > __iot->sector) | |
372 | p = &(*p)->rb_right; | |
373 | else { | |
e7c9f3ff | 374 | fprintf(stderr, |
ab197ca7 AB |
375 | "sector alias (%Lu) on device %d,%d!\n", |
376 | (unsigned long long) iot->sector, | |
e7c9f3ff | 377 | MAJOR(iot->device), MINOR(iot->device)); |
7997c5b0 JA |
378 | return 1; |
379 | } | |
380 | } | |
381 | ||
382 | rb_link_node(&iot->rb_node, parent, p); | |
383 | rb_insert_color(&iot->rb_node, &rb_track_root); | |
384 | return 0; | |
385 | } | |
386 | ||
e7c9f3ff | 387 | static struct io_track *__find_track(dev_t device, __u64 sector) |
7997c5b0 JA |
388 | { |
389 | struct rb_node **p = &rb_track_root.rb_node; | |
390 | struct rb_node *parent = NULL; | |
391 | struct io_track *__iot; | |
392 | ||
393 | while (*p) { | |
394 | parent = *p; | |
395 | ||
396 | __iot = rb_entry(parent, struct io_track, rb_node); | |
397 | ||
e7c9f3ff NS |
398 | if (device < __iot->device) |
399 | p = &(*p)->rb_left; | |
400 | else if (device > __iot->device) | |
401 | p = &(*p)->rb_right; | |
402 | else if (sector < __iot->sector) | |
7997c5b0 JA |
403 | p = &(*p)->rb_left; |
404 | else if (sector > __iot->sector) | |
405 | p = &(*p)->rb_right; | |
406 | else | |
407 | return __iot; | |
408 | } | |
409 | ||
410 | return NULL; | |
411 | } | |
412 | ||
bf0720af JA |
413 | static struct io_track *find_track(__u32 pid, char *comm, dev_t device, |
414 | __u64 sector) | |
7997c5b0 | 415 | { |
916b5501 | 416 | struct io_track *iot; |
7997c5b0 | 417 | |
e7c9f3ff | 418 | iot = __find_track(device, sector); |
7997c5b0 JA |
419 | if (!iot) { |
420 | iot = malloc(sizeof(*iot)); | |
50adc0ba | 421 | iot->pid = pid; |
bf0720af | 422 | memcpy(iot->comm, comm, sizeof(iot->comm)); |
e7c9f3ff | 423 | iot->device = device; |
7997c5b0 JA |
424 | iot->sector = sector; |
425 | track_rb_insert(iot); | |
426 | } | |
427 | ||
428 | return iot; | |
429 | } | |
430 | ||
a01516de | 431 | static void log_track_frontmerge(struct blk_io_trace *t) |
2e3e8ded JA |
432 | { |
433 | struct io_track *iot; | |
434 | ||
435 | if (!track_ios) | |
436 | return; | |
2e3e8ded | 437 | |
a01516de | 438 | iot = __find_track(t->device, t->sector + (t->bytes >> 9)); |
cb2a1a62 | 439 | if (!iot) { |
acd70d21 JA |
440 | fprintf(stderr, "merge not found for (%d,%d): %llu\n", |
441 | MAJOR(t->device), MINOR(t->device), | |
442 | t->sector + (t->bytes >> 9)); | |
cb2a1a62 | 443 | return; |
2e3e8ded | 444 | } |
cb2a1a62 JA |
445 | |
446 | rb_erase(&iot->rb_node, &rb_track_root); | |
a01516de | 447 | iot->sector -= t->bytes >> 9; |
cb2a1a62 | 448 | track_rb_insert(iot); |
2e3e8ded JA |
449 | } |
450 | ||
95c15013 | 451 | static void log_track_getrq(struct blk_io_trace *t) |
2e3e8ded JA |
452 | { |
453 | struct io_track *iot; | |
454 | ||
455 | if (!track_ios) | |
456 | return; | |
457 | ||
bf0720af | 458 | iot = find_track(t->pid, t->comm, t->device, t->sector); |
95c15013 JA |
459 | iot->allocation_time = t->time; |
460 | } | |
461 | ||
95c15013 | 462 | /* |
b6076a9b | 463 | * return time between rq allocation and insertion |
95c15013 | 464 | */ |
b6076a9b | 465 | static unsigned long long log_track_insert(struct blk_io_trace *t) |
95c15013 | 466 | { |
50adc0ba | 467 | unsigned long long elapsed; |
95c15013 JA |
468 | struct io_track *iot; |
469 | ||
470 | if (!track_ios) | |
471 | return -1; | |
472 | ||
bf0720af | 473 | iot = find_track(t->pid, t->comm, t->device, t->sector); |
2e3e8ded | 474 | iot->queue_time = t->time; |
acd70d21 JA |
475 | |
476 | if (!iot->allocation_time) | |
477 | return -1; | |
478 | ||
50adc0ba JA |
479 | elapsed = iot->queue_time - iot->allocation_time; |
480 | ||
481 | if (per_process_stats) { | |
bf0720af | 482 | struct per_process_info *ppi = find_process(iot->pid,iot->comm); |
b9d40d6f | 483 | int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
50adc0ba | 484 | |
b9d40d6f JA |
485 | if (ppi && elapsed > ppi->longest_allocation_wait[w]) |
486 | ppi->longest_allocation_wait[w] = elapsed; | |
50adc0ba JA |
487 | } |
488 | ||
489 | return elapsed; | |
2e3e8ded JA |
490 | } |
491 | ||
492 | /* | |
493 | * return time between queue and issue | |
494 | */ | |
495 | static unsigned long long log_track_issue(struct blk_io_trace *t) | |
496 | { | |
50adc0ba | 497 | unsigned long long elapsed; |
2e3e8ded JA |
498 | struct io_track *iot; |
499 | ||
500 | if (!track_ios) | |
501 | return -1; | |
502 | if ((t->action & BLK_TC_ACT(BLK_TC_FS)) == 0) | |
503 | return -1; | |
504 | ||
e7c9f3ff | 505 | iot = __find_track(t->device, t->sector); |
cb2a1a62 | 506 | if (!iot) { |
acd70d21 JA |
507 | fprintf(stderr, "issue not found for (%d,%d): %llu\n", |
508 | MAJOR(t->device), MINOR(t->device), t->sector); | |
2e3e8ded | 509 | return -1; |
cb2a1a62 | 510 | } |
2e3e8ded JA |
511 | |
512 | iot->dispatch_time = t->time; | |
50adc0ba JA |
513 | elapsed = iot->dispatch_time - iot->queue_time; |
514 | ||
515 | if (per_process_stats) { | |
bf0720af | 516 | struct per_process_info *ppi = find_process(iot->pid,iot->comm); |
b9d40d6f | 517 | int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
50adc0ba | 518 | |
b9d40d6f JA |
519 | if (ppi && elapsed > ppi->longest_dispatch_wait[w]) |
520 | ppi->longest_dispatch_wait[w] = elapsed; | |
50adc0ba JA |
521 | } |
522 | ||
523 | return elapsed; | |
2e3e8ded JA |
524 | } |
525 | ||
526 | /* | |
527 | * return time between dispatch and complete | |
528 | */ | |
529 | static unsigned long long log_track_complete(struct blk_io_trace *t) | |
530 | { | |
531 | unsigned long long elapsed; | |
532 | struct io_track *iot; | |
533 | ||
534 | if (!track_ios) | |
535 | return -1; | |
536 | if ((t->action & BLK_TC_ACT(BLK_TC_FS)) == 0) | |
537 | return -1; | |
538 | ||
e7c9f3ff | 539 | iot = __find_track(t->device, t->sector); |
cb2a1a62 | 540 | if (!iot) { |
acd70d21 JA |
541 | fprintf(stderr, "complete not found for (%d,%d): %llu\n", |
542 | MAJOR(t->device), MINOR(t->device), t->sector); | |
2e3e8ded | 543 | return -1; |
cb2a1a62 | 544 | } |
2e3e8ded JA |
545 | |
546 | iot->completion_time = t->time; | |
547 | elapsed = iot->completion_time - iot->dispatch_time; | |
548 | ||
50adc0ba | 549 | if (per_process_stats) { |
bf0720af | 550 | struct per_process_info *ppi = find_process(iot->pid,iot->comm); |
b9d40d6f | 551 | int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
50adc0ba | 552 | |
b9d40d6f JA |
553 | if (ppi && elapsed > ppi->longest_completion_wait[w]) |
554 | ppi->longest_completion_wait[w] = elapsed; | |
50adc0ba JA |
555 | } |
556 | ||
2e3e8ded JA |
557 | /* |
558 | * kill the trace, we don't need it after completion | |
559 | */ | |
560 | rb_erase(&iot->rb_node, &rb_track_root); | |
561 | free(iot); | |
562 | ||
563 | return elapsed; | |
564 | } | |
565 | ||
566 | ||
152f6476 JA |
567 | static struct io_stats *find_process_io_stats(__u32 pid, char *name) |
568 | { | |
bf0720af | 569 | struct per_process_info *ppi = find_process(pid, name); |
152f6476 JA |
570 | |
571 | if (!ppi) { | |
572 | ppi = malloc(sizeof(*ppi)); | |
573 | memset(ppi, 0, sizeof(*ppi)); | |
bf0720af | 574 | memcpy(ppi->name, name, 16); |
152f6476 JA |
575 | ppi->pid = pid; |
576 | add_process_to_hash(ppi); | |
577 | add_process_to_list(ppi); | |
578 | } | |
579 | ||
580 | return &ppi->io_stats; | |
581 | } | |
582 | ||
e7c9f3ff | 583 | static void resize_cpu_info(struct per_dev_info *pdi, int cpu) |
a718bd37 | 584 | { |
e7c9f3ff NS |
585 | struct per_cpu_info *cpus = pdi->cpus; |
586 | int ncpus = pdi->ncpus; | |
587 | int new_count = cpu + 1; | |
588 | int new_space, size; | |
a718bd37 NS |
589 | char *new_start; |
590 | ||
e7c9f3ff NS |
591 | size = new_count * sizeof(struct per_cpu_info); |
592 | cpus = realloc(cpus, size); | |
593 | if (!cpus) { | |
594 | char name[20]; | |
595 | fprintf(stderr, "Out of memory, CPU info for device %s (%d)\n", | |
596 | get_dev_name(pdi, name, sizeof(name)), size); | |
a718bd37 NS |
597 | exit(1); |
598 | } | |
599 | ||
e7c9f3ff NS |
600 | new_start = (char *)cpus + (ncpus * sizeof(struct per_cpu_info)); |
601 | new_space = (new_count - ncpus) * sizeof(struct per_cpu_info); | |
a718bd37 | 602 | memset(new_start, 0, new_space); |
e7c9f3ff NS |
603 | |
604 | pdi->ncpus = new_count; | |
605 | pdi->cpus = cpus; | |
606 | } | |
cb2a1a62 | 607 | |
e7c9f3ff NS |
608 | static struct per_cpu_info *get_cpu_info(struct per_dev_info *pdi, int cpu) |
609 | { | |
cb2a1a62 JA |
610 | struct per_cpu_info *pci; |
611 | ||
e7c9f3ff NS |
612 | if (cpu >= pdi->ncpus) |
613 | resize_cpu_info(pdi, cpu); | |
cb2a1a62 JA |
614 | |
615 | pci = &pdi->cpus[cpu]; | |
616 | pci->cpu = cpu; | |
617 | return pci; | |
a718bd37 NS |
618 | } |
619 | ||
e7c9f3ff NS |
620 | |
621 | static int resize_devices(char *name) | |
a718bd37 | 622 | { |
e7c9f3ff | 623 | int size = (ndevices + 1) * sizeof(struct per_dev_info); |
c499bf38 | 624 | |
e7c9f3ff NS |
625 | devices = realloc(devices, size); |
626 | if (!devices) { | |
627 | fprintf(stderr, "Out of memory, device %s (%d)\n", name, size); | |
628 | return 1; | |
629 | } | |
630 | memset(&devices[ndevices], 0, sizeof(struct per_dev_info)); | |
631 | devices[ndevices].name = name; | |
632 | ndevices++; | |
633 | return 0; | |
634 | } | |
a718bd37 | 635 | |
cb2a1a62 | 636 | static struct per_dev_info *get_dev_info(dev_t id) |
e7c9f3ff | 637 | { |
cb2a1a62 | 638 | struct per_dev_info *pdi; |
e7c9f3ff | 639 | int i; |
c499bf38 | 640 | |
7d747d22 JA |
641 | for (i = 0; i < ndevices; i++) { |
642 | if (!devices[i].id) | |
643 | devices[i].id = id; | |
e7c9f3ff NS |
644 | if (devices[i].id == id) |
645 | return &devices[i]; | |
7d747d22 | 646 | } |
cb2a1a62 | 647 | |
e7c9f3ff NS |
648 | if (resize_devices(NULL) != 0) |
649 | return NULL; | |
cb2a1a62 JA |
650 | |
651 | pdi = &devices[ndevices - 1]; | |
652 | pdi->id = id; | |
0583b6a2 | 653 | pdi->last_sequence = 0; |
287fa3d6 | 654 | pdi->last_read_time = 0; |
cb2a1a62 | 655 | return pdi; |
a718bd37 NS |
656 | } |
657 | ||
e7c9f3ff NS |
658 | static char *get_dev_name(struct per_dev_info *pdi, char *buffer, int size) |
659 | { | |
660 | if (pdi->name) | |
661 | snprintf(buffer, size, "%s", pdi->name); | |
662 | else | |
663 | snprintf(buffer, size, "%d,%d", MAJOR(pdi->id), MINOR(pdi->id)); | |
664 | return buffer; | |
665 | } | |
666 | ||
e7c9f3ff | 667 | static void check_time(struct per_dev_info *pdi, struct blk_io_trace *bit) |
cfab07eb AB |
668 | { |
669 | unsigned long long this = bit->time; | |
e7c9f3ff | 670 | unsigned long long last = pdi->last_reported_time; |
cfab07eb | 671 | |
e7c9f3ff NS |
672 | pdi->backwards = (this < last) ? 'B' : ' '; |
673 | pdi->last_reported_time = this; | |
cfab07eb AB |
674 | } |
675 | ||
152f6476 JA |
676 | static inline void __account_m(struct io_stats *ios, struct blk_io_trace *t, |
677 | int rw) | |
d0ca268b JA |
678 | { |
679 | if (rw) { | |
152f6476 JA |
680 | ios->mwrites++; |
681 | ios->qwrite_kb += t->bytes >> 10; | |
d0ca268b | 682 | } else { |
152f6476 JA |
683 | ios->mreads++; |
684 | ios->qread_kb += t->bytes >> 10; | |
685 | } | |
686 | } | |
687 | ||
688 | static inline void account_m(struct blk_io_trace *t, struct per_cpu_info *pci, | |
689 | int rw) | |
690 | { | |
691 | __account_m(&pci->io_stats, t, rw); | |
692 | ||
693 | if (per_process_stats) { | |
694 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
695 | ||
696 | __account_m(ios, t, rw); | |
d0ca268b JA |
697 | } |
698 | } | |
699 | ||
b6076a9b JA |
700 | static inline void __account_queue(struct io_stats *ios, struct blk_io_trace *t, |
701 | int rw) | |
d0ca268b JA |
702 | { |
703 | if (rw) { | |
152f6476 JA |
704 | ios->qwrites++; |
705 | ios->qwrite_kb += t->bytes >> 10; | |
d0ca268b | 706 | } else { |
152f6476 JA |
707 | ios->qreads++; |
708 | ios->qread_kb += t->bytes >> 10; | |
709 | } | |
710 | } | |
711 | ||
b6076a9b JA |
712 | static inline void account_queue(struct blk_io_trace *t, |
713 | struct per_cpu_info *pci, int rw) | |
152f6476 | 714 | { |
b6076a9b | 715 | __account_queue(&pci->io_stats, t, rw); |
152f6476 JA |
716 | |
717 | if (per_process_stats) { | |
718 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
719 | ||
b6076a9b | 720 | __account_queue(ios, t, rw); |
d0ca268b JA |
721 | } |
722 | } | |
723 | ||
152f6476 | 724 | static inline void __account_c(struct io_stats *ios, int rw, unsigned int bytes) |
d0ca268b JA |
725 | { |
726 | if (rw) { | |
152f6476 JA |
727 | ios->cwrites++; |
728 | ios->cwrite_kb += bytes >> 10; | |
d0ca268b | 729 | } else { |
152f6476 JA |
730 | ios->creads++; |
731 | ios->cread_kb += bytes >> 10; | |
732 | } | |
733 | } | |
734 | ||
735 | static inline void account_c(struct blk_io_trace *t, struct per_cpu_info *pci, | |
736 | int rw, int bytes) | |
737 | { | |
738 | __account_c(&pci->io_stats, rw, bytes); | |
739 | ||
740 | if (per_process_stats) { | |
741 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
742 | ||
743 | __account_c(ios, rw, bytes); | |
d0ca268b JA |
744 | } |
745 | } | |
746 | ||
b6076a9b JA |
747 | static inline void __account_issue(struct io_stats *ios, int rw, |
748 | unsigned int bytes) | |
afd2d7ad | 749 | { |
750 | if (rw) { | |
152f6476 JA |
751 | ios->iwrites++; |
752 | ios->iwrite_kb += bytes >> 10; | |
afd2d7ad | 753 | } else { |
152f6476 JA |
754 | ios->ireads++; |
755 | ios->iread_kb += bytes >> 10; | |
afd2d7ad | 756 | } |
757 | } | |
758 | ||
b6076a9b JA |
759 | static inline void account_issue(struct blk_io_trace *t, |
760 | struct per_cpu_info *pci, int rw) | |
d0ca268b | 761 | { |
b6076a9b | 762 | __account_issue(&pci->io_stats, rw, t->bytes); |
152f6476 JA |
763 | |
764 | if (per_process_stats) { | |
765 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
d5396421 | 766 | |
b6076a9b | 767 | __account_issue(ios, rw, t->bytes); |
152f6476 JA |
768 | } |
769 | } | |
770 | ||
06639b27 JA |
771 | static inline void __account_unplug(struct io_stats *ios, int timer) |
772 | { | |
773 | if (timer) | |
774 | ios->timer_unplugs++; | |
775 | else | |
776 | ios->io_unplugs++; | |
777 | } | |
778 | ||
779 | static inline void account_unplug(struct blk_io_trace *t, | |
780 | struct per_cpu_info *pci, int timer) | |
781 | { | |
782 | __account_unplug(&pci->io_stats, timer); | |
783 | ||
784 | if (per_process_stats) { | |
785 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
786 | ||
787 | __account_unplug(ios, timer); | |
788 | } | |
789 | } | |
790 | ||
ab197ca7 AB |
791 | static void log_complete(struct per_cpu_info *pci, struct blk_io_trace *t, |
792 | char *act) | |
793 | { | |
794 | process_fmt(act, pci, t, log_track_complete(t), 0, NULL); | |
795 | } | |
796 | ||
b6076a9b JA |
797 | static void log_insert(struct per_cpu_info *pci, struct blk_io_trace *t, |
798 | char *act) | |
799 | { | |
800 | process_fmt(act, pci, t, log_track_insert(t), 0, NULL); | |
801 | } | |
802 | ||
ab197ca7 AB |
803 | static void log_queue(struct per_cpu_info *pci, struct blk_io_trace *t, |
804 | char *act) | |
805 | { | |
b6076a9b | 806 | process_fmt(act, pci, t, -1, 0, NULL); |
ab197ca7 | 807 | } |
2e3e8ded | 808 | |
ab197ca7 AB |
809 | static void log_issue(struct per_cpu_info *pci, struct blk_io_trace *t, |
810 | char *act) | |
811 | { | |
812 | process_fmt(act, pci, t, log_track_issue(t), 0, NULL); | |
d0ca268b JA |
813 | } |
814 | ||
d5396421 | 815 | static void log_merge(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 816 | char *act) |
d0ca268b | 817 | { |
a01516de JA |
818 | if (act[0] == 'F') |
819 | log_track_frontmerge(t); | |
2e3e8ded | 820 | |
ab197ca7 | 821 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
d0ca268b JA |
822 | } |
823 | ||
dfe34da1 | 824 | static void log_action(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 825 | char *act) |
dfe34da1 | 826 | { |
ab197ca7 | 827 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
dfe34da1 JA |
828 | } |
829 | ||
d5396421 | 830 | static void log_generic(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 831 | char *act) |
d0ca268b | 832 | { |
ab197ca7 | 833 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
d0ca268b JA |
834 | } |
835 | ||
ab197ca7 | 836 | static void log_unplug(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 837 | char *act) |
67e14fdc | 838 | { |
ab197ca7 | 839 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
67e14fdc JA |
840 | } |
841 | ||
93f1c611 JA |
842 | static void log_split(struct per_cpu_info *pci, struct blk_io_trace *t, |
843 | char *act) | |
844 | { | |
845 | process_fmt(act, pci, t, -1ULL, 0, NULL); | |
846 | } | |
847 | ||
ab197ca7 | 848 | static void log_pc(struct per_cpu_info *pci, struct blk_io_trace *t, char *act) |
d0ca268b | 849 | { |
ab197ca7 | 850 | unsigned char *buf = (unsigned char *) t + sizeof(*t); |
d0ca268b | 851 | |
ab197ca7 | 852 | process_fmt(act, pci, t, -1ULL, t->pdu_len, buf); |
d0ca268b JA |
853 | } |
854 | ||
ff3a732c | 855 | static void dump_trace_pc(struct blk_io_trace *t, struct per_cpu_info *pci) |
d0ca268b | 856 | { |
56f2af81 JA |
857 | int act = t->action & 0xffff; |
858 | ||
859 | switch (act) { | |
d0ca268b | 860 | case __BLK_TA_QUEUE: |
3639a11e | 861 | log_generic(pci, t, "Q"); |
d0ca268b JA |
862 | break; |
863 | case __BLK_TA_GETRQ: | |
3639a11e | 864 | log_generic(pci, t, "G"); |
d0ca268b JA |
865 | break; |
866 | case __BLK_TA_SLEEPRQ: | |
3639a11e | 867 | log_generic(pci, t, "S"); |
d0ca268b JA |
868 | break; |
869 | case __BLK_TA_REQUEUE: | |
3639a11e | 870 | log_generic(pci, t, "R"); |
d0ca268b JA |
871 | break; |
872 | case __BLK_TA_ISSUE: | |
ab197ca7 | 873 | log_pc(pci, t, "D"); |
d0ca268b JA |
874 | break; |
875 | case __BLK_TA_COMPLETE: | |
3639a11e | 876 | log_pc(pci, t, "C"); |
d0ca268b | 877 | break; |
56f2af81 JA |
878 | case __BLK_TA_INSERT: |
879 | log_pc(pci, t, "I"); | |
880 | break; | |
d0ca268b | 881 | default: |
56f2af81 | 882 | fprintf(stderr, "Bad pc action %x\n", act); |
87b72777 | 883 | break; |
d0ca268b | 884 | } |
d0ca268b JA |
885 | } |
886 | ||
d5396421 | 887 | static void dump_trace_fs(struct blk_io_trace *t, struct per_cpu_info *pci) |
d0ca268b JA |
888 | { |
889 | int w = t->action & BLK_TC_ACT(BLK_TC_WRITE); | |
7997c5b0 | 890 | int act = t->action & 0xffff; |
d0ca268b | 891 | |
7997c5b0 | 892 | switch (act) { |
d0ca268b | 893 | case __BLK_TA_QUEUE: |
b6076a9b | 894 | account_queue(t, pci, w); |
3639a11e | 895 | log_queue(pci, t, "Q"); |
d0ca268b | 896 | break; |
b6076a9b JA |
897 | case __BLK_TA_INSERT: |
898 | log_insert(pci, t, "I"); | |
899 | break; | |
d0ca268b | 900 | case __BLK_TA_BACKMERGE: |
152f6476 | 901 | account_m(t, pci, w); |
3639a11e | 902 | log_merge(pci, t, "M"); |
d0ca268b JA |
903 | break; |
904 | case __BLK_TA_FRONTMERGE: | |
152f6476 | 905 | account_m(t, pci, w); |
3639a11e | 906 | log_merge(pci, t, "F"); |
d0ca268b JA |
907 | break; |
908 | case __BLK_TA_GETRQ: | |
95c15013 | 909 | log_track_getrq(t); |
3639a11e | 910 | log_generic(pci, t, "G"); |
d0ca268b JA |
911 | break; |
912 | case __BLK_TA_SLEEPRQ: | |
3639a11e | 913 | log_generic(pci, t, "S"); |
d0ca268b JA |
914 | break; |
915 | case __BLK_TA_REQUEUE: | |
152f6476 | 916 | account_c(t, pci, w, -t->bytes); |
3639a11e | 917 | log_queue(pci, t, "R"); |
d0ca268b JA |
918 | break; |
919 | case __BLK_TA_ISSUE: | |
b6076a9b | 920 | account_issue(t, pci, w); |
3639a11e | 921 | log_issue(pci, t, "D"); |
d0ca268b JA |
922 | break; |
923 | case __BLK_TA_COMPLETE: | |
152f6476 | 924 | account_c(t, pci, w, t->bytes); |
3639a11e | 925 | log_complete(pci, t, "C"); |
d0ca268b | 926 | break; |
88b1a526 | 927 | case __BLK_TA_PLUG: |
3639a11e | 928 | log_action(pci, t, "P"); |
88b1a526 | 929 | break; |
3639a11e | 930 | case __BLK_TA_UNPLUG_IO: |
06639b27 | 931 | account_unplug(t, pci, 0); |
3639a11e JA |
932 | log_unplug(pci, t, "U"); |
933 | break; | |
934 | case __BLK_TA_UNPLUG_TIMER: | |
06639b27 | 935 | account_unplug(t, pci, 1); |
3639a11e | 936 | log_unplug(pci, t, "UT"); |
88b1a526 | 937 | break; |
93f1c611 JA |
938 | case __BLK_TA_SPLIT: |
939 | log_split(pci, t, "X"); | |
940 | break; | |
941 | case __BLK_TA_BOUNCE: | |
942 | log_generic(pci, t, "B"); | |
943 | break; | |
d0ca268b JA |
944 | default: |
945 | fprintf(stderr, "Bad fs action %x\n", t->action); | |
1f79c4a0 | 946 | break; |
d0ca268b | 947 | } |
d0ca268b JA |
948 | } |
949 | ||
ff3a732c JA |
950 | static void dump_trace(struct blk_io_trace *t, struct per_cpu_info *pci, |
951 | struct per_dev_info *pdi) | |
d0ca268b JA |
952 | { |
953 | if (t->action & BLK_TC_ACT(BLK_TC_PC)) | |
ff3a732c | 954 | dump_trace_pc(t, pci); |
d0ca268b | 955 | else |
d5396421 | 956 | dump_trace_fs(t, pci); |
87b72777 | 957 | |
e7c9f3ff | 958 | pdi->events++; |
d0ca268b JA |
959 | } |
960 | ||
152f6476 | 961 | static void dump_io_stats(struct io_stats *ios, char *msg) |
5c017e4b | 962 | { |
152f6476 JA |
963 | fprintf(ofp, "%s\n", msg); |
964 | ||
965 | fprintf(ofp, " Reads Queued: %'8lu, %'8LuKiB\t", ios->qreads, ios->qread_kb); | |
966 | fprintf(ofp, " Writes Queued: %'8lu, %'8LuKiB\n", ios->qwrites,ios->qwrite_kb); | |
0a6b8fc4 | 967 | |
152f6476 JA |
968 | fprintf(ofp, " Read Dispatches: %'8lu, %'8LuKiB\t", ios->ireads, ios->iread_kb); |
969 | fprintf(ofp, " Write Dispatches: %'8lu, %'8LuKiB\n", ios->iwrites,ios->iwrite_kb); | |
970 | fprintf(ofp, " Reads Completed: %'8lu, %'8LuKiB\t", ios->creads, ios->cread_kb); | |
971 | fprintf(ofp, " Writes Completed: %'8lu, %'8LuKiB\n", ios->cwrites,ios->cwrite_kb); | |
972 | fprintf(ofp, " Read Merges: %'8lu%8c\t", ios->mreads, ' '); | |
152f6476 | 973 | fprintf(ofp, " Write Merges: %'8lu\n", ios->mwrites); |
06639b27 JA |
974 | fprintf(ofp, " IO unplugs: %'8lu%8c\t", ios->io_unplugs, ' '); |
975 | fprintf(ofp, " Timer unplugs: %'8lu\n", ios->timer_unplugs); | |
5c017e4b JA |
976 | } |
977 | ||
50adc0ba JA |
978 | static void dump_wait_stats(struct per_process_info *ppi) |
979 | { | |
b9d40d6f JA |
980 | unsigned long rawait = ppi->longest_allocation_wait[0] / 1000; |
981 | unsigned long rdwait = ppi->longest_dispatch_wait[0] / 1000; | |
982 | unsigned long rcwait = ppi->longest_completion_wait[0] / 1000; | |
983 | unsigned long wawait = ppi->longest_allocation_wait[1] / 1000; | |
984 | unsigned long wdwait = ppi->longest_dispatch_wait[1] / 1000; | |
985 | unsigned long wcwait = ppi->longest_completion_wait[1] / 1000; | |
986 | ||
987 | fprintf(ofp, " Allocation wait: %'8lu%8c\t", rawait, ' '); | |
988 | fprintf(ofp, " Allocation wait: %'8lu\n", wawait); | |
989 | fprintf(ofp, " Dispatch wait: %'8lu%8c\t", rdwait, ' '); | |
990 | fprintf(ofp, " Dispatch wait: %'8lu\n", wdwait); | |
991 | fprintf(ofp, " Completion wait: %'8lu%8c\t", rcwait, ' '); | |
992 | fprintf(ofp, " Completion wait: %'8lu\n", wcwait); | |
50adc0ba JA |
993 | } |
994 | ||
886ecf0e JA |
995 | static int ppi_name_compare(const void *p1, const void *p2) |
996 | { | |
997 | struct per_process_info *ppi1 = *((struct per_process_info **) p1); | |
998 | struct per_process_info *ppi2 = *((struct per_process_info **) p2); | |
999 | int res; | |
1000 | ||
1001 | res = strverscmp(ppi1->name, ppi2->name); | |
1002 | if (!res) | |
06e6f286 | 1003 | res = ppi1->pid > ppi2->pid; |
886ecf0e JA |
1004 | |
1005 | return res; | |
1006 | } | |
1007 | ||
1008 | static void sort_process_list(void) | |
1009 | { | |
1010 | struct per_process_info **ppis; | |
1011 | struct per_process_info *ppi; | |
1012 | int i = 0; | |
1013 | ||
1014 | ppis = malloc(ppi_list_entries * sizeof(struct per_process_info *)); | |
1015 | ||
1016 | ppi = ppi_list; | |
1017 | while (ppi) { | |
06e6f286 | 1018 | ppis[i++] = ppi; |
886ecf0e JA |
1019 | ppi = ppi->list_next; |
1020 | } | |
1021 | ||
06e6f286 | 1022 | qsort(ppis, ppi_list_entries, sizeof(ppi), ppi_name_compare); |
886ecf0e JA |
1023 | |
1024 | i = ppi_list_entries - 1; | |
1025 | ppi_list = NULL; | |
1026 | while (i >= 0) { | |
1027 | ppi = ppis[i]; | |
1028 | ||
1029 | ppi->list_next = ppi_list; | |
1030 | ppi_list = ppi; | |
1031 | i--; | |
1032 | } | |
50c38702 JA |
1033 | |
1034 | free(ppis); | |
886ecf0e JA |
1035 | } |
1036 | ||
152f6476 JA |
1037 | static void show_process_stats(void) |
1038 | { | |
1039 | struct per_process_info *ppi; | |
1040 | ||
886ecf0e JA |
1041 | sort_process_list(); |
1042 | ||
152f6476 JA |
1043 | ppi = ppi_list; |
1044 | while (ppi) { | |
ce8b6b4f JA |
1045 | char name[64]; |
1046 | ||
715d8021 | 1047 | if (ppi->more_than_one) |
bf0720af | 1048 | sprintf(name, "%s (%u, ...)", ppi->name, ppi->pid); |
715d8021 JA |
1049 | else |
1050 | sprintf(name, "%s (%u)", ppi->name, ppi->pid); | |
bf0720af | 1051 | |
ce8b6b4f | 1052 | dump_io_stats(&ppi->io_stats, name); |
50adc0ba | 1053 | dump_wait_stats(ppi); |
152f6476 JA |
1054 | ppi = ppi->list_next; |
1055 | } | |
1056 | ||
1057 | fprintf(ofp, "\n"); | |
1058 | } | |
1059 | ||
e7c9f3ff | 1060 | static void show_device_and_cpu_stats(void) |
d0ca268b | 1061 | { |
e7c9f3ff NS |
1062 | struct per_dev_info *pdi; |
1063 | struct per_cpu_info *pci; | |
1064 | struct io_stats total, *ios; | |
1065 | int i, j, pci_events; | |
1066 | char line[3 + 8/*cpu*/ + 2 + 32/*dev*/ + 3]; | |
1067 | char name[32]; | |
1068 | ||
1069 | for (pdi = devices, i = 0; i < ndevices; i++, pdi++) { | |
1070 | ||
1071 | memset(&total, 0, sizeof(total)); | |
1072 | pci_events = 0; | |
1073 | ||
1074 | if (i > 0) | |
1075 | fprintf(ofp, "\n"); | |
1076 | ||
1077 | for (pci = pdi->cpus, j = 0; j < pdi->ncpus; j++, pci++) { | |
1078 | if (!pci->nelems) | |
1079 | continue; | |
1080 | ||
1081 | ios = &pci->io_stats; | |
1082 | total.qreads += ios->qreads; | |
1083 | total.qwrites += ios->qwrites; | |
1084 | total.creads += ios->creads; | |
1085 | total.cwrites += ios->cwrites; | |
1086 | total.mreads += ios->mreads; | |
1087 | total.mwrites += ios->mwrites; | |
1088 | total.ireads += ios->ireads; | |
1089 | total.iwrites += ios->iwrites; | |
1090 | total.qread_kb += ios->qread_kb; | |
1091 | total.qwrite_kb += ios->qwrite_kb; | |
1092 | total.cread_kb += ios->cread_kb; | |
1093 | total.cwrite_kb += ios->cwrite_kb; | |
1094 | total.iread_kb += ios->iread_kb; | |
1095 | total.iwrite_kb += ios->iwrite_kb; | |
06639b27 JA |
1096 | total.timer_unplugs += ios->timer_unplugs; |
1097 | total.io_unplugs += ios->io_unplugs; | |
e7c9f3ff NS |
1098 | |
1099 | snprintf(line, sizeof(line) - 1, "CPU%d (%s):", | |
1100 | j, get_dev_name(pdi, name, sizeof(name))); | |
1101 | dump_io_stats(ios, line); | |
1102 | pci_events++; | |
1103 | } | |
5c017e4b | 1104 | |
e7c9f3ff NS |
1105 | if (pci_events > 1) { |
1106 | fprintf(ofp, "\n"); | |
1107 | snprintf(line, sizeof(line) - 1, "Total (%s):", | |
1108 | get_dev_name(pdi, name, sizeof(name))); | |
1109 | dump_io_stats(&total, line); | |
1110 | } | |
d0ca268b | 1111 | |
dcf0f7ed | 1112 | fprintf(ofp, "\nEvents (%s): %'Lu entries, %'lu skips\n", |
0aa8a62d | 1113 | get_dev_name(pdi, line, sizeof(line)), pdi->events, |
dcf0f7ed | 1114 | pdi->skips); |
e7c9f3ff | 1115 | } |
d0ca268b JA |
1116 | } |
1117 | ||
d36421e4 JA |
1118 | /* |
1119 | * struct trace and blktrace allocation cache, we do potentially | |
1120 | * millions of mallocs for these structures while only using at most | |
1121 | * a few thousand at the time | |
1122 | */ | |
1123 | static inline void t_free(struct trace *t) | |
1124 | { | |
1125 | t->next = t_alloc_list; | |
1126 | t_alloc_list = t; | |
1127 | } | |
1128 | ||
1129 | static inline struct trace *t_alloc(void) | |
1130 | { | |
1131 | struct trace *t = t_alloc_list; | |
1132 | ||
1133 | if (t) { | |
1134 | t_alloc_list = t->next; | |
1135 | return t; | |
1136 | } | |
1137 | ||
1138 | return malloc(sizeof(*t)); | |
1139 | } | |
1140 | ||
1141 | static inline void bit_free(struct blk_io_trace *bit) | |
1142 | { | |
1143 | /* | |
1144 | * abuse a 64-bit field for a next pointer for the free item | |
1145 | */ | |
0c39425c | 1146 | bit->time = (__u64) (unsigned long) bit_alloc_list; |
d36421e4 JA |
1147 | bit_alloc_list = (struct blk_io_trace *) bit; |
1148 | } | |
1149 | ||
1150 | static inline struct blk_io_trace *bit_alloc(void) | |
1151 | { | |
1152 | struct blk_io_trace *bit = bit_alloc_list; | |
1153 | ||
1154 | if (bit) { | |
0c39425c NS |
1155 | bit_alloc_list = (struct blk_io_trace *) (unsigned long) \ |
1156 | bit->time; | |
d36421e4 JA |
1157 | return bit; |
1158 | } | |
1159 | ||
1160 | return malloc(sizeof(*bit)); | |
1161 | } | |
1162 | ||
4f0ae44f JA |
1163 | static void find_genesis(void) |
1164 | { | |
1165 | struct trace *t = trace_list; | |
1166 | ||
1167 | genesis_time = -1ULL; | |
1168 | while (t != NULL) { | |
1169 | if (t->bit->time < genesis_time) | |
1170 | genesis_time = t->bit->time; | |
1171 | ||
1172 | t = t->next; | |
1173 | } | |
1174 | } | |
1175 | ||
7f4d89e6 | 1176 | static inline int check_stopwatch(struct blk_io_trace *bit) |
4f0ae44f | 1177 | { |
7f4d89e6 JA |
1178 | if (bit->time < stopwatch_end && |
1179 | bit->time >= stopwatch_start) | |
4f0ae44f JA |
1180 | return 0; |
1181 | ||
1182 | return 1; | |
1183 | } | |
1184 | ||
53c68c88 JA |
1185 | /* |
1186 | * return youngest entry read | |
1187 | */ | |
1188 | static int sort_entries(unsigned long long *youngest) | |
4f0ae44f JA |
1189 | { |
1190 | struct trace *t; | |
4f0ae44f JA |
1191 | |
1192 | if (!genesis_time) | |
1193 | find_genesis(); | |
1194 | ||
53c68c88 | 1195 | *youngest = -1ULL; |
4f0ae44f JA |
1196 | while ((t = trace_list) != NULL) { |
1197 | struct blk_io_trace *bit = t->bit; | |
1198 | ||
1199 | trace_list = t->next; | |
1200 | ||
1201 | if (verify_trace(bit)) | |
1202 | continue; | |
1203 | ||
7f4d89e6 | 1204 | bit->time -= genesis_time; |
4f0ae44f | 1205 | |
7f4d89e6 | 1206 | if (check_stopwatch(bit)) { |
4f0ae44f JA |
1207 | bit_free(bit); |
1208 | t_free(t); | |
1209 | continue; | |
1210 | } | |
1211 | ||
1212 | if (trace_rb_insert(t)) | |
53c68c88 | 1213 | return -1; |
4f0ae44f | 1214 | |
53c68c88 JA |
1215 | if (bit->time < *youngest) |
1216 | *youngest = bit->time; | |
4f0ae44f JA |
1217 | } |
1218 | ||
53c68c88 | 1219 | return 0; |
4f0ae44f JA |
1220 | } |
1221 | ||
a649216c | 1222 | static void show_entries_rb(int force) |
8fc0abbc | 1223 | { |
1f7afa72 JA |
1224 | struct per_dev_info *pdi = NULL; |
1225 | struct per_cpu_info *pci = NULL; | |
8fc0abbc | 1226 | struct blk_io_trace *bit; |
3aabcd89 | 1227 | struct rb_node *n; |
8fc0abbc | 1228 | struct trace *t; |
1f7afa72 | 1229 | |
7d747d22 | 1230 | while ((n = rb_first(&rb_sort_root)) != NULL) { |
8fc0abbc | 1231 | |
1f7afa72 JA |
1232 | if (done) |
1233 | break; | |
8fc0abbc JA |
1234 | |
1235 | t = rb_entry(n, struct trace, rb_node); | |
1236 | bit = t->bit; | |
1237 | ||
287fa3d6 JA |
1238 | if (!pdi || pdi->id != bit->device) |
1239 | pdi = get_dev_info(bit->device); | |
1f7afa72 | 1240 | |
e7c9f3ff NS |
1241 | if (!pdi) { |
1242 | fprintf(stderr, "Unknown device ID? (%d,%d)\n", | |
1243 | MAJOR(bit->device), MINOR(bit->device)); | |
1244 | break; | |
1245 | } | |
1f7afa72 JA |
1246 | |
1247 | if (bit->cpu > pdi->ncpus) { | |
e7c9f3ff | 1248 | fprintf(stderr, "Unknown CPU ID? (%d, device %d,%d)\n", |
7d747d22 JA |
1249 | bit->cpu, MAJOR(bit->device), |
1250 | MINOR(bit->device)); | |
87b72777 | 1251 | break; |
8fc0abbc JA |
1252 | } |
1253 | ||
cb2a1a62 JA |
1254 | /* |
1255 | * back off displaying more info if we are out of sync | |
1256 | * on SMP systems. to prevent stalling on lost events, | |
287fa3d6 | 1257 | * only allow an event to skip us a few times |
cb2a1a62 | 1258 | */ |
acd70d21 JA |
1259 | if (bit->sequence != (pdi->last_sequence + 1)) { |
1260 | if (!force) { | |
1261 | struct trace *__t; | |
1262 | ||
1263 | /* | |
1264 | * the wanted sequence is really there, | |
1265 | * continue because this means that the | |
1266 | * log time is earlier on the trace we have | |
1267 | * now | |
1268 | */ | |
1269 | __t = trace_rb_find(pdi->id, | |
1270 | pdi->last_sequence + 1); | |
1271 | if (__t == NULL) | |
1272 | break; | |
1273 | } else { | |
1274 | fprintf(stderr, "(%d,%d): skipping %lu -> %u\n", | |
1275 | MAJOR(pdi->id), MINOR(pdi->id), | |
1276 | pdi->last_sequence, bit->sequence); | |
0aa8a62d | 1277 | pdi->skips++; |
acd70d21 | 1278 | } |
cb2a1a62 JA |
1279 | } |
1280 | ||
a649216c | 1281 | if (!force && bit->time > last_allowed_time) |
46e6968b | 1282 | break; |
8fc0abbc | 1283 | |
be925321 JA |
1284 | pdi->last_sequence = bit->sequence; |
1285 | ||
4f0ae44f | 1286 | check_time(pdi, bit); |
8fc0abbc | 1287 | |
4f0ae44f JA |
1288 | if (!pci || pci->cpu != bit->cpu) |
1289 | pci = get_cpu_info(pdi, bit->cpu); | |
287fa3d6 | 1290 | |
4f0ae44f | 1291 | dump_trace(bit, pci, pdi); |
87b72777 | 1292 | |
7d747d22 | 1293 | rb_erase(&t->rb_node, &rb_sort_root); |
a649216c | 1294 | rb_sort_entries--; |
d36421e4 JA |
1295 | bit_free(bit); |
1296 | t_free(t); | |
cb2a1a62 | 1297 | } |
8fc0abbc JA |
1298 | } |
1299 | ||
1f79c4a0 JA |
1300 | static int read_data(int fd, void *buffer, int bytes, int block) |
1301 | { | |
1302 | int ret, bytes_left, fl; | |
1303 | void *p; | |
1304 | ||
1305 | fl = fcntl(fd, F_GETFL); | |
1306 | ||
1307 | if (!block) | |
1308 | fcntl(fd, F_SETFL, fl | O_NONBLOCK); | |
1309 | else | |
1310 | fcntl(fd, F_SETFL, fl & ~O_NONBLOCK); | |
1311 | ||
1312 | bytes_left = bytes; | |
1313 | p = buffer; | |
1314 | while (bytes_left > 0) { | |
1315 | ret = read(fd, p, bytes_left); | |
1316 | if (!ret) | |
1317 | return 1; | |
1318 | else if (ret < 0) { | |
1319 | if (errno != EAGAIN) | |
1320 | perror("read"); | |
a649216c | 1321 | |
1f79c4a0 JA |
1322 | return -1; |
1323 | } else { | |
1324 | p += ret; | |
1325 | bytes_left -= ret; | |
1326 | } | |
1327 | } | |
1328 | ||
1329 | return 0; | |
1330 | } | |
1331 | ||
a649216c | 1332 | static int read_events(int fd, int always_block) |
cb2a1a62 | 1333 | { |
287fa3d6 | 1334 | struct per_dev_info *pdi = NULL; |
7d747d22 JA |
1335 | int events = 0; |
1336 | ||
1337 | while (!is_done() && events < rb_batch) { | |
1338 | struct blk_io_trace *bit; | |
1339 | struct trace *t; | |
1340 | int pdu_len; | |
1341 | __u32 magic; | |
1342 | ||
d36421e4 | 1343 | bit = bit_alloc(); |
cb2a1a62 | 1344 | |
a649216c | 1345 | if (read_data(fd, bit, sizeof(*bit), !events || always_block)) |
cb2a1a62 JA |
1346 | break; |
1347 | ||
7d747d22 JA |
1348 | magic = be32_to_cpu(bit->magic); |
1349 | if ((magic & 0xffffff00) != BLK_IO_TRACE_MAGIC) { | |
1350 | fprintf(stderr, "Bad magic %x\n", magic); | |
1351 | break; | |
1352 | } | |
1353 | ||
1354 | pdu_len = be16_to_cpu(bit->pdu_len); | |
1355 | if (pdu_len) { | |
1356 | void *ptr = realloc(bit, sizeof(*bit) + pdu_len); | |
1357 | ||
1358 | if (read_data(fd, ptr + sizeof(*bit), pdu_len, 1)) | |
1359 | break; | |
1360 | ||
1361 | bit = ptr; | |
1362 | } | |
1363 | ||
d36421e4 | 1364 | t = t_alloc(); |
cb2a1a62 JA |
1365 | memset(t, 0, sizeof(*t)); |
1366 | t->bit = bit; | |
1367 | ||
f1327cc5 | 1368 | trace_to_cpu(bit); |
4f0ae44f | 1369 | |
7d747d22 JA |
1370 | t->next = trace_list; |
1371 | trace_list = t; | |
1f7afa72 | 1372 | |
287fa3d6 JA |
1373 | if (!pdi || pdi->id != bit->device) |
1374 | pdi = get_dev_info(bit->device); | |
1375 | ||
1376 | if (bit->time > pdi->last_read_time) | |
1377 | pdi->last_read_time = bit->time; | |
1378 | ||
7d747d22 | 1379 | events++; |
cb2a1a62 JA |
1380 | } |
1381 | ||
7d747d22 | 1382 | return events; |
cb2a1a62 JA |
1383 | } |
1384 | ||
d5396421 | 1385 | static int do_file(void) |
d0ca268b | 1386 | { |
7d747d22 | 1387 | struct per_cpu_info *pci; |
73877e12 NS |
1388 | struct per_dev_info *pdi; |
1389 | int i, j, events, events_added; | |
d0ca268b | 1390 | |
7d747d22 JA |
1391 | /* |
1392 | * first prepare all files for reading | |
1393 | */ | |
e8741a4a | 1394 | for (i = 0; i < ndevices; i++) { |
73877e12 NS |
1395 | pdi = &devices[i]; |
1396 | pdi->nfiles = 0; | |
0583b6a2 | 1397 | pdi->last_sequence = 0; |
73877e12 | 1398 | |
74feaeb5 | 1399 | for (j = 0;; j++) { |
e7c9f3ff | 1400 | struct stat st; |
87b72777 | 1401 | |
e7c9f3ff NS |
1402 | pci = get_cpu_info(pdi, j); |
1403 | pci->cpu = j; | |
7d747d22 | 1404 | pci->fd = -1; |
d0ca268b | 1405 | |
e7c9f3ff | 1406 | snprintf(pci->fname, sizeof(pci->fname)-1, |
7d747d22 | 1407 | "%s.blktrace.%d", pdi->name, pci->cpu); |
e7c9f3ff NS |
1408 | if (stat(pci->fname, &st) < 0) |
1409 | break; | |
74feaeb5 AB |
1410 | if (st.st_size) { |
1411 | pci->fd = open(pci->fname, O_RDONLY); | |
1412 | if (pci->fd < 0) { | |
1413 | perror(pci->fname); | |
1414 | continue; | |
1415 | } | |
e7c9f3ff NS |
1416 | } |
1417 | ||
7d747d22 | 1418 | printf("Input file %s added\n", pci->fname); |
73877e12 | 1419 | pdi->nfiles++; |
d0ca268b | 1420 | } |
d5396421 JA |
1421 | } |
1422 | ||
7d747d22 JA |
1423 | /* |
1424 | * now loop over the files reading in the data | |
1425 | */ | |
412819ce | 1426 | do { |
53c68c88 JA |
1427 | unsigned long long youngest; |
1428 | ||
7d747d22 | 1429 | events_added = 0; |
287fa3d6 | 1430 | last_allowed_time = -1ULL; |
d5396421 | 1431 | |
7d747d22 | 1432 | for (i = 0; i < ndevices; i++) { |
73877e12 NS |
1433 | pdi = &devices[i]; |
1434 | ||
1435 | for (j = 0; j < pdi->nfiles; j++) { | |
d5396421 | 1436 | |
73877e12 | 1437 | pci = get_cpu_info(pdi, j); |
d5396421 | 1438 | |
7d747d22 JA |
1439 | if (pci->fd == -1) |
1440 | continue; | |
51128a28 | 1441 | |
a649216c | 1442 | events = read_events(pci->fd, 1); |
7d747d22 JA |
1443 | if (!events) { |
1444 | close(pci->fd); | |
1445 | pci->fd = -1; | |
1446 | continue; | |
1447 | } | |
d5396421 | 1448 | |
287fa3d6 JA |
1449 | if (pdi->last_read_time < last_allowed_time) |
1450 | last_allowed_time = pdi->last_read_time; | |
d5396421 | 1451 | |
7d747d22 JA |
1452 | events_added += events; |
1453 | } | |
2ff323b0 | 1454 | } |
d5396421 | 1455 | |
53c68c88 JA |
1456 | if (sort_entries(&youngest)) |
1457 | break; | |
1458 | ||
1459 | if (youngest > stopwatch_end) | |
287fa3d6 JA |
1460 | break; |
1461 | ||
a649216c | 1462 | show_entries_rb(0); |
cb2a1a62 | 1463 | |
7d747d22 | 1464 | } while (events_added); |
d5396421 | 1465 | |
a649216c JA |
1466 | if (rb_sort_entries) |
1467 | show_entries_rb(1); | |
1468 | ||
7d747d22 | 1469 | return 0; |
412819ce | 1470 | } |
d5396421 | 1471 | |
412819ce JA |
1472 | static int do_stdin(void) |
1473 | { | |
53c68c88 | 1474 | unsigned long long youngest; |
412819ce | 1475 | int fd; |
d5396421 | 1476 | |
be925321 | 1477 | last_allowed_time = -1ULL; |
1f79c4a0 | 1478 | fd = dup(STDIN_FILENO); |
412819ce JA |
1479 | do { |
1480 | int events; | |
d5396421 | 1481 | |
a649216c | 1482 | events = read_events(fd, 0); |
412819ce JA |
1483 | if (!events) |
1484 | break; | |
1485 | ||
53c68c88 JA |
1486 | if (sort_entries(&youngest)) |
1487 | break; | |
1488 | ||
1489 | if (youngest > stopwatch_end) | |
2ff323b0 JA |
1490 | break; |
1491 | ||
a649216c | 1492 | show_entries_rb(0); |
d5396421 JA |
1493 | } while (1); |
1494 | ||
a649216c JA |
1495 | if (rb_sort_entries) |
1496 | show_entries_rb(1); | |
1497 | ||
d5396421 | 1498 | close(fd); |
d5396421 JA |
1499 | return 0; |
1500 | } | |
d0ca268b | 1501 | |
1f79c4a0 | 1502 | static void flush_output(void) |
412819ce | 1503 | { |
152f6476 | 1504 | fflush(ofp); |
412819ce JA |
1505 | } |
1506 | ||
1f79c4a0 | 1507 | static void handle_sigint(int sig) |
412819ce JA |
1508 | { |
1509 | done = 1; | |
1510 | flush_output(); | |
1511 | } | |
1512 | ||
46e6968b NS |
1513 | /* |
1514 | * Extract start and duration times from a string, allowing | |
1515 | * us to specify a time interval of interest within a trace. | |
1516 | * Format: "duration" (start is zero) or "start:duration". | |
1517 | */ | |
1518 | static int find_stopwatch_interval(char *string) | |
1519 | { | |
1520 | double value; | |
1521 | char *sp; | |
1522 | ||
1523 | value = strtod(string, &sp); | |
1524 | if (sp == string) { | |
1525 | fprintf(stderr,"Invalid stopwatch timer: %s\n", string); | |
1526 | return 1; | |
1527 | } | |
1528 | if (*sp == ':') { | |
1529 | stopwatch_start = DOUBLE_TO_NANO_ULL(value); | |
1530 | string = sp + 1; | |
1531 | value = strtod(string, &sp); | |
1532 | if (sp == string || *sp != '\0') { | |
1533 | fprintf(stderr,"Invalid stopwatch duration time: %s\n", | |
1534 | string); | |
1535 | return 1; | |
1536 | } | |
1537 | } else if (*sp != '\0') { | |
1538 | fprintf(stderr,"Invalid stopwatch start timer: %s\n", string); | |
1539 | return 1; | |
1540 | } | |
1b928247 JA |
1541 | stopwatch_end = DOUBLE_TO_NANO_ULL(value); |
1542 | if (stopwatch_end <= stopwatch_start) { | |
1543 | fprintf(stderr, "Invalid stopwatch interval: %Lu -> %Lu\n", | |
1544 | stopwatch_start, stopwatch_end); | |
1545 | return 1; | |
1546 | } | |
1547 | ||
46e6968b NS |
1548 | return 0; |
1549 | } | |
1550 | ||
52724a0e JA |
1551 | static char usage_str[] = \ |
1552 | "[ -i <input name> ] [-o <output name> [ -s ] [ -t ] [ -q ]\n" \ | |
1553 | "[ -w start:stop ] [ -f output format ] [ -F format spec ] [ -v] \n\n" \ | |
1554 | "\t-i Input file containing trace data, or '-' for stdin\n" \ | |
1555 | "\t-o Output file. If not given, output is stdout\n" \ | |
1556 | "\t-b stdin read batching\n" \ | |
1557 | "\t-s Show per-program io statistics\n" \ | |
bf0720af | 1558 | "\t-n Hash processes by name, not pid\n" \ |
52724a0e JA |
1559 | "\t-t Track individual ios. Will tell you the time a request took\n" \ |
1560 | "\t to get queued, to get dispatched, and to get completed\n" \ | |
1561 | "\t-q Quiet. Don't display any stats at the end of the trace\n" \ | |
1562 | "\t-w Only parse data between the given time interval in seconds.\n" \ | |
1563 | "\t If 'start' isn't given, blkparse defaults the start time to 0\n" \ | |
1564 | "\t -f Output format. Customize the output format. The format field\n" \ | |
1565 | "\t identifies can be found in the documentation\n" \ | |
1566 | "\t-F Format specification. Can be found in the documentation\n" \ | |
1567 | "\t-v Print program version info\n\n"; | |
1568 | ||
1f79c4a0 JA |
1569 | static void usage(char *prog) |
1570 | { | |
52724a0e | 1571 | fprintf(stderr, "Usage: %s %s %s", prog, blkparse_version, usage_str); |
1f79c4a0 JA |
1572 | } |
1573 | ||
d5396421 JA |
1574 | int main(int argc, char *argv[]) |
1575 | { | |
152f6476 | 1576 | char *ofp_buffer; |
a66877e6 | 1577 | int c, ret, mode; |
1e1c60f1 | 1578 | int per_device_and_cpu_stats = 1; |
d5396421 JA |
1579 | |
1580 | while ((c = getopt_long(argc, argv, S_OPTS, l_opts, NULL)) != -1) { | |
1581 | switch (c) { | |
1582 | case 'i': | |
e7c9f3ff NS |
1583 | if (!strcmp(optarg, "-") && !pipeline) |
1584 | pipeline = 1; | |
1585 | else if (resize_devices(optarg) != 0) | |
1586 | return 1; | |
d5396421 JA |
1587 | break; |
1588 | case 'o': | |
66efebf8 | 1589 | output_name = optarg; |
d5396421 | 1590 | break; |
79f19470 JA |
1591 | case 'b': |
1592 | rb_batch = atoi(optarg); | |
1593 | if (rb_batch <= 0) | |
1594 | rb_batch = RB_BATCH_DEFAULT; | |
1595 | break; | |
152f6476 JA |
1596 | case 's': |
1597 | per_process_stats = 1; | |
1598 | break; | |
7997c5b0 JA |
1599 | case 't': |
1600 | track_ios = 1; | |
1601 | break; | |
1e1c60f1 NS |
1602 | case 'q': |
1603 | per_device_and_cpu_stats = 0; | |
1604 | break; | |
46e6968b NS |
1605 | case 'w': |
1606 | if (find_stopwatch_interval(optarg) != 0) | |
1607 | return 1; | |
1608 | break; | |
ab197ca7 AB |
1609 | case 'f': |
1610 | set_all_format_specs(optarg); | |
1611 | break; | |
1612 | case 'F': | |
1613 | if (add_format_spec(optarg) != 0) | |
1614 | return 1; | |
1615 | break; | |
bf0720af | 1616 | case 'n': |
715d8021 | 1617 | ppi_hash_by_pid = 0; |
bf0720af | 1618 | break; |
52724a0e JA |
1619 | case 'v': |
1620 | printf("%s version %s\n", argv[0], blkparse_version); | |
1621 | return 0; | |
d5396421 | 1622 | default: |
1f79c4a0 | 1623 | usage(argv[0]); |
d5396421 JA |
1624 | return 1; |
1625 | } | |
d0ca268b JA |
1626 | } |
1627 | ||
e7c9f3ff NS |
1628 | while (optind < argc) { |
1629 | if (!strcmp(argv[optind], "-") && !pipeline) | |
1630 | pipeline = 1; | |
1631 | else if (resize_devices(argv[optind]) != 0) | |
1632 | return 1; | |
1633 | optind++; | |
1634 | } | |
1635 | ||
1636 | if (!pipeline && !ndevices) { | |
1f79c4a0 | 1637 | usage(argv[0]); |
d5396421 JA |
1638 | return 1; |
1639 | } | |
1640 | ||
7997c5b0 JA |
1641 | memset(&rb_sort_root, 0, sizeof(rb_sort_root)); |
1642 | memset(&rb_track_root, 0, sizeof(rb_track_root)); | |
412819ce JA |
1643 | |
1644 | signal(SIGINT, handle_sigint); | |
1645 | signal(SIGHUP, handle_sigint); | |
1646 | signal(SIGTERM, handle_sigint); | |
d5396421 | 1647 | |
d69db225 JA |
1648 | setlocale(LC_NUMERIC, "en_US"); |
1649 | ||
a66877e6 | 1650 | if (!output_name) { |
152f6476 | 1651 | ofp = fdopen(STDOUT_FILENO, "w"); |
a66877e6 JA |
1652 | mode = _IOLBF; |
1653 | } else { | |
152f6476 JA |
1654 | char ofname[128]; |
1655 | ||
7a9690c0 | 1656 | snprintf(ofname, sizeof(ofname) - 1, "%s", output_name); |
152f6476 | 1657 | ofp = fopen(ofname, "w"); |
a66877e6 | 1658 | mode = _IOFBF; |
152f6476 JA |
1659 | } |
1660 | ||
1661 | if (!ofp) { | |
1662 | perror("fopen"); | |
1663 | return 1; | |
1664 | } | |
1665 | ||
1666 | ofp_buffer = malloc(4096); | |
a66877e6 | 1667 | if (setvbuf(ofp, ofp_buffer, mode, 4096)) { |
152f6476 JA |
1668 | perror("setvbuf"); |
1669 | return 1; | |
1670 | } | |
1671 | ||
e7c9f3ff | 1672 | if (pipeline) |
d5396421 JA |
1673 | ret = do_stdin(); |
1674 | else | |
1675 | ret = do_file(); | |
1676 | ||
152f6476 JA |
1677 | if (per_process_stats) |
1678 | show_process_stats(); | |
1679 | ||
1e1c60f1 NS |
1680 | if (per_device_and_cpu_stats) |
1681 | show_device_and_cpu_stats(); | |
152f6476 | 1682 | |
412819ce | 1683 | flush_output(); |
d5396421 | 1684 | return ret; |
d0ca268b | 1685 | } |