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 JA |
155 | struct trace *next; |
156 | int skipped; | |
8fc0abbc JA |
157 | }; |
158 | ||
cb2a1a62 | 159 | static struct rb_root rb_sort_root; |
a649216c JA |
160 | static unsigned long rb_sort_entries; |
161 | ||
cb2a1a62 JA |
162 | static struct rb_root rb_track_root; |
163 | ||
164 | static struct trace *trace_list; | |
165 | ||
d36421e4 JA |
166 | /* |
167 | * allocation cache | |
168 | */ | |
169 | static struct blk_io_trace *bit_alloc_list; | |
170 | static struct trace *t_alloc_list; | |
171 | ||
7997c5b0 JA |
172 | /* |
173 | * for tracking individual ios | |
174 | */ | |
175 | struct io_track { | |
176 | struct rb_node rb_node; | |
177 | ||
e7c9f3ff | 178 | dev_t device; |
7997c5b0 JA |
179 | __u64 sector; |
180 | __u32 pid; | |
bf0720af | 181 | char comm[16]; |
95c15013 | 182 | unsigned long long allocation_time; |
7997c5b0 JA |
183 | unsigned long long queue_time; |
184 | unsigned long long dispatch_time; | |
185 | unsigned long long completion_time; | |
186 | }; | |
187 | ||
e7c9f3ff NS |
188 | static int ndevices; |
189 | static struct per_dev_info *devices; | |
190 | static char *get_dev_name(struct per_dev_info *, char *, int); | |
d0ca268b | 191 | |
71d5d4c9 | 192 | FILE *ofp = NULL; |
e7c9f3ff NS |
193 | static char *output_name; |
194 | ||
195 | static unsigned long long genesis_time; | |
287fa3d6 | 196 | static unsigned long long last_allowed_time; |
46e6968b NS |
197 | static unsigned long long stopwatch_start; /* start from zero by default */ |
198 | static unsigned long long stopwatch_end = ULONG_LONG_MAX; /* "infinity" */ | |
152f6476 JA |
199 | |
200 | static int per_process_stats; | |
7997c5b0 | 201 | static int track_ios; |
bf0720af | 202 | static int ppi_hash_by_pid = 1; |
d0ca268b | 203 | |
7d747d22 | 204 | #define RB_BATCH_DEFAULT (512) |
79f19470 JA |
205 | static int rb_batch = RB_BATCH_DEFAULT; |
206 | ||
e7c9f3ff NS |
207 | static int pipeline; |
208 | ||
412819ce JA |
209 | #define is_done() (*(volatile int *)(&done)) |
210 | static volatile int done; | |
211 | ||
bf0720af JA |
212 | #define JHASH_RANDOM (0x3af5f2ee) |
213 | ||
214 | static inline int ppi_hash_pid(__u32 pid) | |
215 | { | |
216 | return jhash_1word(pid, JHASH_RANDOM) & PPI_HASH_MASK; | |
217 | } | |
218 | ||
219 | static inline int ppi_hash_name(const char *name) | |
152f6476 | 220 | { |
bf0720af JA |
221 | return jhash(name, 16, JHASH_RANDOM) & PPI_HASH_MASK; |
222 | } | |
223 | ||
224 | static inline int ppi_hash(struct per_process_info *ppi) | |
225 | { | |
226 | if (ppi_hash_by_pid) | |
227 | return ppi_hash_pid(ppi->pid); | |
228 | ||
bf0720af | 229 | return ppi_hash_name(ppi->name); |
152f6476 JA |
230 | } |
231 | ||
232 | static inline void add_process_to_hash(struct per_process_info *ppi) | |
233 | { | |
bf0720af | 234 | const int hash_idx = ppi_hash(ppi); |
152f6476 | 235 | |
bf0720af JA |
236 | ppi->hash_next = ppi_hash_table[hash_idx]; |
237 | ppi_hash_table[hash_idx] = ppi; | |
152f6476 JA |
238 | } |
239 | ||
240 | static inline void add_process_to_list(struct per_process_info *ppi) | |
241 | { | |
242 | ppi->list_next = ppi_list; | |
243 | ppi_list = ppi; | |
886ecf0e | 244 | ppi_list_entries++; |
152f6476 JA |
245 | } |
246 | ||
bf0720af JA |
247 | static struct per_process_info *find_process_by_name(char *name) |
248 | { | |
249 | const int hash_idx = ppi_hash_name(name); | |
250 | struct per_process_info *ppi; | |
251 | ||
252 | ppi = ppi_hash_table[hash_idx]; | |
253 | while (ppi) { | |
254 | if (!strcmp(ppi->name, name)) | |
255 | return ppi; | |
256 | ||
257 | ppi = ppi->hash_next; | |
258 | } | |
259 | ||
260 | return NULL; | |
261 | } | |
262 | ||
152f6476 JA |
263 | static struct per_process_info *find_process_by_pid(__u32 pid) |
264 | { | |
bf0720af | 265 | const int hash_idx = ppi_hash_pid(pid); |
152f6476 JA |
266 | struct per_process_info *ppi; |
267 | ||
bf0720af | 268 | ppi = ppi_hash_table[hash_idx]; |
152f6476 JA |
269 | while (ppi) { |
270 | if (ppi->pid == pid) | |
271 | return ppi; | |
272 | ||
273 | ppi = ppi->hash_next; | |
274 | } | |
275 | ||
276 | return NULL; | |
277 | } | |
278 | ||
bf0720af JA |
279 | static struct per_process_info *find_process(__u32 pid, char *name) |
280 | { | |
715d8021 JA |
281 | struct per_process_info *ppi; |
282 | ||
bf0720af JA |
283 | if (ppi_hash_by_pid) |
284 | return find_process_by_pid(pid); | |
285 | ||
715d8021 JA |
286 | ppi = find_process_by_name(name); |
287 | if (ppi && ppi->pid != pid) | |
288 | ppi->more_than_one = 1; | |
289 | ||
290 | return ppi; | |
bf0720af JA |
291 | } |
292 | ||
7997c5b0 JA |
293 | static inline int trace_rb_insert(struct trace *t) |
294 | { | |
295 | struct rb_node **p = &rb_sort_root.rb_node; | |
296 | struct rb_node *parent = NULL; | |
297 | struct trace *__t; | |
298 | ||
299 | while (*p) { | |
300 | parent = *p; | |
301 | __t = rb_entry(parent, struct trace, rb_node); | |
302 | ||
dcf0f7ed | 303 | if (t->bit->time < __t->bit->time) |
e7c9f3ff NS |
304 | p = &(*p)->rb_left; |
305 | else if (t->bit->time > __t->bit->time) | |
306 | p = &(*p)->rb_right; | |
307 | else if (t->bit->device < __t->bit->device) | |
308 | p = &(*p)->rb_left; | |
309 | else if (t->bit->device > __t->bit->device) | |
310 | p = &(*p)->rb_right; | |
dcf0f7ed JA |
311 | else if (t->bit->sequence < __t->bit->sequence) |
312 | p = &(*p)->rb_left; | |
313 | else if (t->bit->sequence > __t->bit->sequence) | |
314 | p = &(*p)->rb_right; | |
e7c9f3ff NS |
315 | else if (t->bit->device == __t->bit->device) { |
316 | fprintf(stderr, | |
317 | "sequence alias (%d) on device %d,%d!\n", | |
318 | t->bit->sequence, | |
319 | MAJOR(t->bit->device), MINOR(t->bit->device)); | |
7997c5b0 JA |
320 | return 1; |
321 | } | |
322 | } | |
323 | ||
a649216c | 324 | rb_sort_entries++; |
7997c5b0 JA |
325 | rb_link_node(&t->rb_node, parent, p); |
326 | rb_insert_color(&t->rb_node, &rb_sort_root); | |
327 | return 0; | |
328 | } | |
329 | ||
0583b6a2 | 330 | static struct trace *trace_rb_find(dev_t device, unsigned long sequence) |
e3556946 JA |
331 | { |
332 | struct rb_node **p = &rb_sort_root.rb_node; | |
333 | struct rb_node *parent = NULL; | |
334 | struct trace *__t; | |
335 | ||
336 | while (*p) { | |
337 | parent = *p; | |
338 | __t = rb_entry(parent, struct trace, rb_node); | |
339 | ||
0583b6a2 JA |
340 | if (device < __t->bit->device) |
341 | p = &(*p)->rb_left; | |
342 | else if (device > __t->bit->device) | |
343 | p = &(*p)->rb_right; | |
344 | else if (sequence < __t->bit->sequence) | |
e3556946 JA |
345 | p = &(*p)->rb_left; |
346 | else if (sequence > __t->bit->sequence) | |
347 | p = &(*p)->rb_right; | |
348 | else | |
349 | return __t; | |
350 | } | |
351 | ||
352 | return NULL; | |
353 | } | |
354 | ||
7997c5b0 JA |
355 | static inline int track_rb_insert(struct io_track *iot) |
356 | { | |
357 | struct rb_node **p = &rb_track_root.rb_node; | |
358 | struct rb_node *parent = NULL; | |
359 | struct io_track *__iot; | |
360 | ||
361 | while (*p) { | |
362 | parent = *p; | |
e7c9f3ff | 363 | |
7997c5b0 JA |
364 | __iot = rb_entry(parent, struct io_track, rb_node); |
365 | ||
e7c9f3ff NS |
366 | if (iot->device < __iot->device) |
367 | p = &(*p)->rb_left; | |
368 | else if (iot->device > __iot->device) | |
369 | p = &(*p)->rb_right; | |
370 | else if (iot->sector < __iot->sector) | |
7997c5b0 JA |
371 | p = &(*p)->rb_left; |
372 | else if (iot->sector > __iot->sector) | |
373 | p = &(*p)->rb_right; | |
374 | else { | |
e7c9f3ff | 375 | fprintf(stderr, |
ab197ca7 AB |
376 | "sector alias (%Lu) on device %d,%d!\n", |
377 | (unsigned long long) iot->sector, | |
e7c9f3ff | 378 | MAJOR(iot->device), MINOR(iot->device)); |
7997c5b0 JA |
379 | return 1; |
380 | } | |
381 | } | |
382 | ||
383 | rb_link_node(&iot->rb_node, parent, p); | |
384 | rb_insert_color(&iot->rb_node, &rb_track_root); | |
385 | return 0; | |
386 | } | |
387 | ||
e7c9f3ff | 388 | static struct io_track *__find_track(dev_t device, __u64 sector) |
7997c5b0 JA |
389 | { |
390 | struct rb_node **p = &rb_track_root.rb_node; | |
391 | struct rb_node *parent = NULL; | |
392 | struct io_track *__iot; | |
393 | ||
394 | while (*p) { | |
395 | parent = *p; | |
396 | ||
397 | __iot = rb_entry(parent, struct io_track, rb_node); | |
398 | ||
e7c9f3ff NS |
399 | if (device < __iot->device) |
400 | p = &(*p)->rb_left; | |
401 | else if (device > __iot->device) | |
402 | p = &(*p)->rb_right; | |
403 | else if (sector < __iot->sector) | |
7997c5b0 JA |
404 | p = &(*p)->rb_left; |
405 | else if (sector > __iot->sector) | |
406 | p = &(*p)->rb_right; | |
407 | else | |
408 | return __iot; | |
409 | } | |
410 | ||
411 | return NULL; | |
412 | } | |
413 | ||
bf0720af JA |
414 | static struct io_track *find_track(__u32 pid, char *comm, dev_t device, |
415 | __u64 sector) | |
7997c5b0 | 416 | { |
916b5501 | 417 | struct io_track *iot; |
7997c5b0 | 418 | |
e7c9f3ff | 419 | iot = __find_track(device, sector); |
7997c5b0 JA |
420 | if (!iot) { |
421 | iot = malloc(sizeof(*iot)); | |
50adc0ba | 422 | iot->pid = pid; |
bf0720af | 423 | memcpy(iot->comm, comm, sizeof(iot->comm)); |
e7c9f3ff | 424 | iot->device = device; |
7997c5b0 JA |
425 | iot->sector = sector; |
426 | track_rb_insert(iot); | |
427 | } | |
428 | ||
429 | return iot; | |
430 | } | |
431 | ||
a01516de | 432 | static void log_track_frontmerge(struct blk_io_trace *t) |
2e3e8ded JA |
433 | { |
434 | struct io_track *iot; | |
435 | ||
436 | if (!track_ios) | |
437 | return; | |
2e3e8ded | 438 | |
a01516de | 439 | iot = __find_track(t->device, t->sector + (t->bytes >> 9)); |
cb2a1a62 JA |
440 | if (!iot) { |
441 | fprintf(stderr, "failed to find mergeable event\n"); | |
442 | return; | |
2e3e8ded | 443 | } |
cb2a1a62 JA |
444 | |
445 | rb_erase(&iot->rb_node, &rb_track_root); | |
a01516de | 446 | iot->sector -= t->bytes >> 9; |
cb2a1a62 | 447 | track_rb_insert(iot); |
2e3e8ded JA |
448 | } |
449 | ||
95c15013 | 450 | static void log_track_getrq(struct blk_io_trace *t) |
2e3e8ded JA |
451 | { |
452 | struct io_track *iot; | |
453 | ||
454 | if (!track_ios) | |
455 | return; | |
456 | ||
bf0720af | 457 | iot = find_track(t->pid, t->comm, t->device, t->sector); |
95c15013 JA |
458 | iot->allocation_time = t->time; |
459 | } | |
460 | ||
461 | ||
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; |
50adc0ba JA |
475 | elapsed = iot->queue_time - iot->allocation_time; |
476 | ||
477 | if (per_process_stats) { | |
bf0720af | 478 | struct per_process_info *ppi = find_process(iot->pid,iot->comm); |
b9d40d6f | 479 | int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
50adc0ba | 480 | |
b9d40d6f JA |
481 | if (ppi && elapsed > ppi->longest_allocation_wait[w]) |
482 | ppi->longest_allocation_wait[w] = elapsed; | |
50adc0ba JA |
483 | } |
484 | ||
485 | return elapsed; | |
2e3e8ded JA |
486 | } |
487 | ||
488 | /* | |
489 | * return time between queue and issue | |
490 | */ | |
491 | static unsigned long long log_track_issue(struct blk_io_trace *t) | |
492 | { | |
50adc0ba | 493 | unsigned long long elapsed; |
2e3e8ded JA |
494 | struct io_track *iot; |
495 | ||
496 | if (!track_ios) | |
497 | return -1; | |
498 | if ((t->action & BLK_TC_ACT(BLK_TC_FS)) == 0) | |
499 | return -1; | |
500 | ||
e7c9f3ff | 501 | iot = __find_track(t->device, t->sector); |
cb2a1a62 JA |
502 | if (!iot) { |
503 | fprintf(stderr, "failed to find issue event\n"); | |
2e3e8ded | 504 | return -1; |
cb2a1a62 | 505 | } |
2e3e8ded JA |
506 | |
507 | iot->dispatch_time = t->time; | |
50adc0ba JA |
508 | elapsed = iot->dispatch_time - iot->queue_time; |
509 | ||
510 | if (per_process_stats) { | |
bf0720af | 511 | struct per_process_info *ppi = find_process(iot->pid,iot->comm); |
b9d40d6f | 512 | int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
50adc0ba | 513 | |
b9d40d6f JA |
514 | if (ppi && elapsed > ppi->longest_dispatch_wait[w]) |
515 | ppi->longest_dispatch_wait[w] = elapsed; | |
50adc0ba JA |
516 | } |
517 | ||
518 | return elapsed; | |
2e3e8ded JA |
519 | } |
520 | ||
521 | /* | |
522 | * return time between dispatch and complete | |
523 | */ | |
524 | static unsigned long long log_track_complete(struct blk_io_trace *t) | |
525 | { | |
526 | unsigned long long elapsed; | |
527 | struct io_track *iot; | |
528 | ||
529 | if (!track_ios) | |
530 | return -1; | |
531 | if ((t->action & BLK_TC_ACT(BLK_TC_FS)) == 0) | |
532 | return -1; | |
533 | ||
e7c9f3ff | 534 | iot = __find_track(t->device, t->sector); |
cb2a1a62 JA |
535 | if (!iot) { |
536 | fprintf(stderr, "failed to find complete event\n"); | |
2e3e8ded | 537 | return -1; |
cb2a1a62 | 538 | } |
2e3e8ded JA |
539 | |
540 | iot->completion_time = t->time; | |
541 | elapsed = iot->completion_time - iot->dispatch_time; | |
542 | ||
50adc0ba | 543 | if (per_process_stats) { |
bf0720af | 544 | struct per_process_info *ppi = find_process(iot->pid,iot->comm); |
b9d40d6f | 545 | int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
50adc0ba | 546 | |
b9d40d6f JA |
547 | if (ppi && elapsed > ppi->longest_completion_wait[w]) |
548 | ppi->longest_completion_wait[w] = elapsed; | |
50adc0ba JA |
549 | } |
550 | ||
2e3e8ded JA |
551 | /* |
552 | * kill the trace, we don't need it after completion | |
553 | */ | |
554 | rb_erase(&iot->rb_node, &rb_track_root); | |
555 | free(iot); | |
556 | ||
557 | return elapsed; | |
558 | } | |
559 | ||
560 | ||
152f6476 JA |
561 | static struct io_stats *find_process_io_stats(__u32 pid, char *name) |
562 | { | |
bf0720af | 563 | struct per_process_info *ppi = find_process(pid, name); |
152f6476 JA |
564 | |
565 | if (!ppi) { | |
566 | ppi = malloc(sizeof(*ppi)); | |
567 | memset(ppi, 0, sizeof(*ppi)); | |
bf0720af | 568 | memcpy(ppi->name, name, 16); |
152f6476 JA |
569 | ppi->pid = pid; |
570 | add_process_to_hash(ppi); | |
571 | add_process_to_list(ppi); | |
572 | } | |
573 | ||
574 | return &ppi->io_stats; | |
575 | } | |
576 | ||
e7c9f3ff | 577 | static void resize_cpu_info(struct per_dev_info *pdi, int cpu) |
a718bd37 | 578 | { |
e7c9f3ff NS |
579 | struct per_cpu_info *cpus = pdi->cpus; |
580 | int ncpus = pdi->ncpus; | |
581 | int new_count = cpu + 1; | |
582 | int new_space, size; | |
a718bd37 NS |
583 | char *new_start; |
584 | ||
e7c9f3ff NS |
585 | size = new_count * sizeof(struct per_cpu_info); |
586 | cpus = realloc(cpus, size); | |
587 | if (!cpus) { | |
588 | char name[20]; | |
589 | fprintf(stderr, "Out of memory, CPU info for device %s (%d)\n", | |
590 | get_dev_name(pdi, name, sizeof(name)), size); | |
a718bd37 NS |
591 | exit(1); |
592 | } | |
593 | ||
e7c9f3ff NS |
594 | new_start = (char *)cpus + (ncpus * sizeof(struct per_cpu_info)); |
595 | new_space = (new_count - ncpus) * sizeof(struct per_cpu_info); | |
a718bd37 | 596 | memset(new_start, 0, new_space); |
e7c9f3ff NS |
597 | |
598 | pdi->ncpus = new_count; | |
599 | pdi->cpus = cpus; | |
600 | } | |
cb2a1a62 | 601 | |
e7c9f3ff NS |
602 | static struct per_cpu_info *get_cpu_info(struct per_dev_info *pdi, int cpu) |
603 | { | |
cb2a1a62 JA |
604 | struct per_cpu_info *pci; |
605 | ||
e7c9f3ff NS |
606 | if (cpu >= pdi->ncpus) |
607 | resize_cpu_info(pdi, cpu); | |
cb2a1a62 JA |
608 | |
609 | pci = &pdi->cpus[cpu]; | |
610 | pci->cpu = cpu; | |
611 | return pci; | |
a718bd37 NS |
612 | } |
613 | ||
e7c9f3ff NS |
614 | |
615 | static int resize_devices(char *name) | |
a718bd37 | 616 | { |
e7c9f3ff | 617 | int size = (ndevices + 1) * sizeof(struct per_dev_info); |
c499bf38 | 618 | |
e7c9f3ff NS |
619 | devices = realloc(devices, size); |
620 | if (!devices) { | |
621 | fprintf(stderr, "Out of memory, device %s (%d)\n", name, size); | |
622 | return 1; | |
623 | } | |
624 | memset(&devices[ndevices], 0, sizeof(struct per_dev_info)); | |
625 | devices[ndevices].name = name; | |
626 | ndevices++; | |
627 | return 0; | |
628 | } | |
a718bd37 | 629 | |
cb2a1a62 | 630 | static struct per_dev_info *get_dev_info(dev_t id) |
e7c9f3ff | 631 | { |
cb2a1a62 | 632 | struct per_dev_info *pdi; |
e7c9f3ff | 633 | int i; |
c499bf38 | 634 | |
7d747d22 JA |
635 | for (i = 0; i < ndevices; i++) { |
636 | if (!devices[i].id) | |
637 | devices[i].id = id; | |
e7c9f3ff NS |
638 | if (devices[i].id == id) |
639 | return &devices[i]; | |
7d747d22 | 640 | } |
cb2a1a62 | 641 | |
e7c9f3ff NS |
642 | if (resize_devices(NULL) != 0) |
643 | return NULL; | |
cb2a1a62 JA |
644 | |
645 | pdi = &devices[ndevices - 1]; | |
646 | pdi->id = id; | |
0583b6a2 | 647 | pdi->last_sequence = 0; |
287fa3d6 | 648 | pdi->last_read_time = 0; |
cb2a1a62 | 649 | return pdi; |
a718bd37 NS |
650 | } |
651 | ||
e7c9f3ff NS |
652 | static char *get_dev_name(struct per_dev_info *pdi, char *buffer, int size) |
653 | { | |
654 | if (pdi->name) | |
655 | snprintf(buffer, size, "%s", pdi->name); | |
656 | else | |
657 | snprintf(buffer, size, "%d,%d", MAJOR(pdi->id), MINOR(pdi->id)); | |
658 | return buffer; | |
659 | } | |
660 | ||
e7c9f3ff | 661 | static void check_time(struct per_dev_info *pdi, struct blk_io_trace *bit) |
cfab07eb AB |
662 | { |
663 | unsigned long long this = bit->time; | |
e7c9f3ff | 664 | unsigned long long last = pdi->last_reported_time; |
cfab07eb | 665 | |
e7c9f3ff NS |
666 | pdi->backwards = (this < last) ? 'B' : ' '; |
667 | pdi->last_reported_time = this; | |
cfab07eb AB |
668 | } |
669 | ||
152f6476 JA |
670 | static inline void __account_m(struct io_stats *ios, struct blk_io_trace *t, |
671 | int rw) | |
d0ca268b JA |
672 | { |
673 | if (rw) { | |
152f6476 JA |
674 | ios->mwrites++; |
675 | ios->qwrite_kb += t->bytes >> 10; | |
d0ca268b | 676 | } else { |
152f6476 JA |
677 | ios->mreads++; |
678 | ios->qread_kb += t->bytes >> 10; | |
679 | } | |
680 | } | |
681 | ||
682 | static inline void account_m(struct blk_io_trace *t, struct per_cpu_info *pci, | |
683 | int rw) | |
684 | { | |
685 | __account_m(&pci->io_stats, t, rw); | |
686 | ||
687 | if (per_process_stats) { | |
688 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
689 | ||
690 | __account_m(ios, t, rw); | |
d0ca268b JA |
691 | } |
692 | } | |
693 | ||
b6076a9b JA |
694 | static inline void __account_queue(struct io_stats *ios, struct blk_io_trace *t, |
695 | int rw) | |
d0ca268b JA |
696 | { |
697 | if (rw) { | |
152f6476 JA |
698 | ios->qwrites++; |
699 | ios->qwrite_kb += t->bytes >> 10; | |
d0ca268b | 700 | } else { |
152f6476 JA |
701 | ios->qreads++; |
702 | ios->qread_kb += t->bytes >> 10; | |
703 | } | |
704 | } | |
705 | ||
b6076a9b JA |
706 | static inline void account_queue(struct blk_io_trace *t, |
707 | struct per_cpu_info *pci, int rw) | |
152f6476 | 708 | { |
b6076a9b | 709 | __account_queue(&pci->io_stats, t, rw); |
152f6476 JA |
710 | |
711 | if (per_process_stats) { | |
712 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
713 | ||
b6076a9b | 714 | __account_queue(ios, t, rw); |
d0ca268b JA |
715 | } |
716 | } | |
717 | ||
152f6476 | 718 | static inline void __account_c(struct io_stats *ios, int rw, unsigned int bytes) |
d0ca268b JA |
719 | { |
720 | if (rw) { | |
152f6476 JA |
721 | ios->cwrites++; |
722 | ios->cwrite_kb += bytes >> 10; | |
d0ca268b | 723 | } else { |
152f6476 JA |
724 | ios->creads++; |
725 | ios->cread_kb += bytes >> 10; | |
726 | } | |
727 | } | |
728 | ||
729 | static inline void account_c(struct blk_io_trace *t, struct per_cpu_info *pci, | |
730 | int rw, int bytes) | |
731 | { | |
732 | __account_c(&pci->io_stats, rw, bytes); | |
733 | ||
734 | if (per_process_stats) { | |
735 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
736 | ||
737 | __account_c(ios, rw, bytes); | |
d0ca268b JA |
738 | } |
739 | } | |
740 | ||
b6076a9b JA |
741 | static inline void __account_issue(struct io_stats *ios, int rw, |
742 | unsigned int bytes) | |
afd2d7ad | 743 | { |
744 | if (rw) { | |
152f6476 JA |
745 | ios->iwrites++; |
746 | ios->iwrite_kb += bytes >> 10; | |
afd2d7ad | 747 | } else { |
152f6476 JA |
748 | ios->ireads++; |
749 | ios->iread_kb += bytes >> 10; | |
afd2d7ad | 750 | } |
751 | } | |
752 | ||
b6076a9b JA |
753 | static inline void account_issue(struct blk_io_trace *t, |
754 | struct per_cpu_info *pci, int rw) | |
d0ca268b | 755 | { |
b6076a9b | 756 | __account_issue(&pci->io_stats, rw, t->bytes); |
152f6476 JA |
757 | |
758 | if (per_process_stats) { | |
759 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
d5396421 | 760 | |
b6076a9b | 761 | __account_issue(ios, rw, t->bytes); |
152f6476 JA |
762 | } |
763 | } | |
764 | ||
06639b27 JA |
765 | static inline void __account_unplug(struct io_stats *ios, int timer) |
766 | { | |
767 | if (timer) | |
768 | ios->timer_unplugs++; | |
769 | else | |
770 | ios->io_unplugs++; | |
771 | } | |
772 | ||
773 | static inline void account_unplug(struct blk_io_trace *t, | |
774 | struct per_cpu_info *pci, int timer) | |
775 | { | |
776 | __account_unplug(&pci->io_stats, timer); | |
777 | ||
778 | if (per_process_stats) { | |
779 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
780 | ||
781 | __account_unplug(ios, timer); | |
782 | } | |
783 | } | |
784 | ||
ab197ca7 AB |
785 | static void log_complete(struct per_cpu_info *pci, struct blk_io_trace *t, |
786 | char *act) | |
787 | { | |
788 | process_fmt(act, pci, t, log_track_complete(t), 0, NULL); | |
789 | } | |
790 | ||
b6076a9b JA |
791 | static void log_insert(struct per_cpu_info *pci, struct blk_io_trace *t, |
792 | char *act) | |
793 | { | |
794 | process_fmt(act, pci, t, log_track_insert(t), 0, NULL); | |
795 | } | |
796 | ||
ab197ca7 AB |
797 | static void log_queue(struct per_cpu_info *pci, struct blk_io_trace *t, |
798 | char *act) | |
799 | { | |
b6076a9b | 800 | process_fmt(act, pci, t, -1, 0, NULL); |
ab197ca7 | 801 | } |
2e3e8ded | 802 | |
ab197ca7 AB |
803 | static void log_issue(struct per_cpu_info *pci, struct blk_io_trace *t, |
804 | char *act) | |
805 | { | |
806 | process_fmt(act, pci, t, log_track_issue(t), 0, NULL); | |
d0ca268b JA |
807 | } |
808 | ||
d5396421 | 809 | static void log_merge(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 810 | char *act) |
d0ca268b | 811 | { |
a01516de JA |
812 | if (act[0] == 'F') |
813 | log_track_frontmerge(t); | |
2e3e8ded | 814 | |
ab197ca7 | 815 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
d0ca268b JA |
816 | } |
817 | ||
dfe34da1 | 818 | static void log_action(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 819 | char *act) |
dfe34da1 | 820 | { |
ab197ca7 | 821 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
dfe34da1 JA |
822 | } |
823 | ||
d5396421 | 824 | static void log_generic(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 825 | char *act) |
d0ca268b | 826 | { |
ab197ca7 | 827 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
d0ca268b JA |
828 | } |
829 | ||
ab197ca7 | 830 | static void log_unplug(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 831 | char *act) |
67e14fdc | 832 | { |
ab197ca7 | 833 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
67e14fdc JA |
834 | } |
835 | ||
93f1c611 JA |
836 | static void log_split(struct per_cpu_info *pci, struct blk_io_trace *t, |
837 | char *act) | |
838 | { | |
839 | process_fmt(act, pci, t, -1ULL, 0, NULL); | |
840 | } | |
841 | ||
ab197ca7 | 842 | static void log_pc(struct per_cpu_info *pci, struct blk_io_trace *t, char *act) |
d0ca268b | 843 | { |
ab197ca7 | 844 | unsigned char *buf = (unsigned char *) t + sizeof(*t); |
d0ca268b | 845 | |
ab197ca7 | 846 | process_fmt(act, pci, t, -1ULL, t->pdu_len, buf); |
d0ca268b JA |
847 | } |
848 | ||
ff3a732c | 849 | static void dump_trace_pc(struct blk_io_trace *t, struct per_cpu_info *pci) |
d0ca268b | 850 | { |
56f2af81 JA |
851 | int act = t->action & 0xffff; |
852 | ||
853 | switch (act) { | |
d0ca268b | 854 | case __BLK_TA_QUEUE: |
3639a11e | 855 | log_generic(pci, t, "Q"); |
d0ca268b JA |
856 | break; |
857 | case __BLK_TA_GETRQ: | |
3639a11e | 858 | log_generic(pci, t, "G"); |
d0ca268b JA |
859 | break; |
860 | case __BLK_TA_SLEEPRQ: | |
3639a11e | 861 | log_generic(pci, t, "S"); |
d0ca268b JA |
862 | break; |
863 | case __BLK_TA_REQUEUE: | |
3639a11e | 864 | log_generic(pci, t, "R"); |
d0ca268b JA |
865 | break; |
866 | case __BLK_TA_ISSUE: | |
ab197ca7 | 867 | log_pc(pci, t, "D"); |
d0ca268b JA |
868 | break; |
869 | case __BLK_TA_COMPLETE: | |
3639a11e | 870 | log_pc(pci, t, "C"); |
d0ca268b | 871 | break; |
56f2af81 JA |
872 | case __BLK_TA_INSERT: |
873 | log_pc(pci, t, "I"); | |
874 | break; | |
d0ca268b | 875 | default: |
56f2af81 | 876 | fprintf(stderr, "Bad pc action %x\n", act); |
87b72777 | 877 | break; |
d0ca268b | 878 | } |
d0ca268b JA |
879 | } |
880 | ||
d5396421 | 881 | static void dump_trace_fs(struct blk_io_trace *t, struct per_cpu_info *pci) |
d0ca268b JA |
882 | { |
883 | int w = t->action & BLK_TC_ACT(BLK_TC_WRITE); | |
7997c5b0 | 884 | int act = t->action & 0xffff; |
d0ca268b | 885 | |
7997c5b0 | 886 | switch (act) { |
d0ca268b | 887 | case __BLK_TA_QUEUE: |
b6076a9b | 888 | account_queue(t, pci, w); |
3639a11e | 889 | log_queue(pci, t, "Q"); |
d0ca268b | 890 | break; |
b6076a9b JA |
891 | case __BLK_TA_INSERT: |
892 | log_insert(pci, t, "I"); | |
893 | break; | |
d0ca268b | 894 | case __BLK_TA_BACKMERGE: |
152f6476 | 895 | account_m(t, pci, w); |
3639a11e | 896 | log_merge(pci, t, "M"); |
d0ca268b JA |
897 | break; |
898 | case __BLK_TA_FRONTMERGE: | |
152f6476 | 899 | account_m(t, pci, w); |
3639a11e | 900 | log_merge(pci, t, "F"); |
d0ca268b JA |
901 | break; |
902 | case __BLK_TA_GETRQ: | |
95c15013 | 903 | log_track_getrq(t); |
3639a11e | 904 | log_generic(pci, t, "G"); |
d0ca268b JA |
905 | break; |
906 | case __BLK_TA_SLEEPRQ: | |
3639a11e | 907 | log_generic(pci, t, "S"); |
d0ca268b JA |
908 | break; |
909 | case __BLK_TA_REQUEUE: | |
152f6476 | 910 | account_c(t, pci, w, -t->bytes); |
3639a11e | 911 | log_queue(pci, t, "R"); |
d0ca268b JA |
912 | break; |
913 | case __BLK_TA_ISSUE: | |
b6076a9b | 914 | account_issue(t, pci, w); |
3639a11e | 915 | log_issue(pci, t, "D"); |
d0ca268b JA |
916 | break; |
917 | case __BLK_TA_COMPLETE: | |
152f6476 | 918 | account_c(t, pci, w, t->bytes); |
3639a11e | 919 | log_complete(pci, t, "C"); |
d0ca268b | 920 | break; |
88b1a526 | 921 | case __BLK_TA_PLUG: |
3639a11e | 922 | log_action(pci, t, "P"); |
88b1a526 | 923 | break; |
3639a11e | 924 | case __BLK_TA_UNPLUG_IO: |
06639b27 | 925 | account_unplug(t, pci, 0); |
3639a11e JA |
926 | log_unplug(pci, t, "U"); |
927 | break; | |
928 | case __BLK_TA_UNPLUG_TIMER: | |
06639b27 | 929 | account_unplug(t, pci, 1); |
3639a11e | 930 | log_unplug(pci, t, "UT"); |
88b1a526 | 931 | break; |
93f1c611 JA |
932 | case __BLK_TA_SPLIT: |
933 | log_split(pci, t, "X"); | |
934 | break; | |
935 | case __BLK_TA_BOUNCE: | |
936 | log_generic(pci, t, "B"); | |
937 | break; | |
d0ca268b JA |
938 | default: |
939 | fprintf(stderr, "Bad fs action %x\n", t->action); | |
1f79c4a0 | 940 | break; |
d0ca268b | 941 | } |
d0ca268b JA |
942 | } |
943 | ||
ff3a732c JA |
944 | static void dump_trace(struct blk_io_trace *t, struct per_cpu_info *pci, |
945 | struct per_dev_info *pdi) | |
d0ca268b JA |
946 | { |
947 | if (t->action & BLK_TC_ACT(BLK_TC_PC)) | |
ff3a732c | 948 | dump_trace_pc(t, pci); |
d0ca268b | 949 | else |
d5396421 | 950 | dump_trace_fs(t, pci); |
87b72777 | 951 | |
e7c9f3ff | 952 | pdi->events++; |
d0ca268b JA |
953 | } |
954 | ||
152f6476 | 955 | static void dump_io_stats(struct io_stats *ios, char *msg) |
5c017e4b | 956 | { |
152f6476 JA |
957 | fprintf(ofp, "%s\n", msg); |
958 | ||
959 | fprintf(ofp, " Reads Queued: %'8lu, %'8LuKiB\t", ios->qreads, ios->qread_kb); | |
960 | fprintf(ofp, " Writes Queued: %'8lu, %'8LuKiB\n", ios->qwrites,ios->qwrite_kb); | |
0a6b8fc4 | 961 | |
152f6476 JA |
962 | fprintf(ofp, " Read Dispatches: %'8lu, %'8LuKiB\t", ios->ireads, ios->iread_kb); |
963 | fprintf(ofp, " Write Dispatches: %'8lu, %'8LuKiB\n", ios->iwrites,ios->iwrite_kb); | |
964 | fprintf(ofp, " Reads Completed: %'8lu, %'8LuKiB\t", ios->creads, ios->cread_kb); | |
965 | fprintf(ofp, " Writes Completed: %'8lu, %'8LuKiB\n", ios->cwrites,ios->cwrite_kb); | |
966 | fprintf(ofp, " Read Merges: %'8lu%8c\t", ios->mreads, ' '); | |
152f6476 | 967 | fprintf(ofp, " Write Merges: %'8lu\n", ios->mwrites); |
06639b27 JA |
968 | fprintf(ofp, " IO unplugs: %'8lu%8c\t", ios->io_unplugs, ' '); |
969 | fprintf(ofp, " Timer unplugs: %'8lu\n", ios->timer_unplugs); | |
5c017e4b JA |
970 | } |
971 | ||
50adc0ba JA |
972 | static void dump_wait_stats(struct per_process_info *ppi) |
973 | { | |
b9d40d6f JA |
974 | unsigned long rawait = ppi->longest_allocation_wait[0] / 1000; |
975 | unsigned long rdwait = ppi->longest_dispatch_wait[0] / 1000; | |
976 | unsigned long rcwait = ppi->longest_completion_wait[0] / 1000; | |
977 | unsigned long wawait = ppi->longest_allocation_wait[1] / 1000; | |
978 | unsigned long wdwait = ppi->longest_dispatch_wait[1] / 1000; | |
979 | unsigned long wcwait = ppi->longest_completion_wait[1] / 1000; | |
980 | ||
981 | fprintf(ofp, " Allocation wait: %'8lu%8c\t", rawait, ' '); | |
982 | fprintf(ofp, " Allocation wait: %'8lu\n", wawait); | |
983 | fprintf(ofp, " Dispatch wait: %'8lu%8c\t", rdwait, ' '); | |
984 | fprintf(ofp, " Dispatch wait: %'8lu\n", wdwait); | |
985 | fprintf(ofp, " Completion wait: %'8lu%8c\t", rcwait, ' '); | |
986 | fprintf(ofp, " Completion wait: %'8lu\n", wcwait); | |
50adc0ba JA |
987 | } |
988 | ||
886ecf0e JA |
989 | static int ppi_name_compare(const void *p1, const void *p2) |
990 | { | |
991 | struct per_process_info *ppi1 = *((struct per_process_info **) p1); | |
992 | struct per_process_info *ppi2 = *((struct per_process_info **) p2); | |
993 | int res; | |
994 | ||
995 | res = strverscmp(ppi1->name, ppi2->name); | |
996 | if (!res) | |
06e6f286 | 997 | res = ppi1->pid > ppi2->pid; |
886ecf0e JA |
998 | |
999 | return res; | |
1000 | } | |
1001 | ||
1002 | static void sort_process_list(void) | |
1003 | { | |
1004 | struct per_process_info **ppis; | |
1005 | struct per_process_info *ppi; | |
1006 | int i = 0; | |
1007 | ||
1008 | ppis = malloc(ppi_list_entries * sizeof(struct per_process_info *)); | |
1009 | ||
1010 | ppi = ppi_list; | |
1011 | while (ppi) { | |
06e6f286 | 1012 | ppis[i++] = ppi; |
886ecf0e JA |
1013 | ppi = ppi->list_next; |
1014 | } | |
1015 | ||
06e6f286 | 1016 | qsort(ppis, ppi_list_entries, sizeof(ppi), ppi_name_compare); |
886ecf0e JA |
1017 | |
1018 | i = ppi_list_entries - 1; | |
1019 | ppi_list = NULL; | |
1020 | while (i >= 0) { | |
1021 | ppi = ppis[i]; | |
1022 | ||
1023 | ppi->list_next = ppi_list; | |
1024 | ppi_list = ppi; | |
1025 | i--; | |
1026 | } | |
50c38702 JA |
1027 | |
1028 | free(ppis); | |
886ecf0e JA |
1029 | } |
1030 | ||
152f6476 JA |
1031 | static void show_process_stats(void) |
1032 | { | |
1033 | struct per_process_info *ppi; | |
1034 | ||
886ecf0e JA |
1035 | sort_process_list(); |
1036 | ||
152f6476 JA |
1037 | ppi = ppi_list; |
1038 | while (ppi) { | |
ce8b6b4f JA |
1039 | char name[64]; |
1040 | ||
715d8021 | 1041 | if (ppi->more_than_one) |
bf0720af | 1042 | sprintf(name, "%s (%u, ...)", ppi->name, ppi->pid); |
715d8021 JA |
1043 | else |
1044 | sprintf(name, "%s (%u)", ppi->name, ppi->pid); | |
bf0720af | 1045 | |
ce8b6b4f | 1046 | dump_io_stats(&ppi->io_stats, name); |
50adc0ba | 1047 | dump_wait_stats(ppi); |
152f6476 JA |
1048 | ppi = ppi->list_next; |
1049 | } | |
1050 | ||
1051 | fprintf(ofp, "\n"); | |
1052 | } | |
1053 | ||
e7c9f3ff | 1054 | static void show_device_and_cpu_stats(void) |
d0ca268b | 1055 | { |
e7c9f3ff NS |
1056 | struct per_dev_info *pdi; |
1057 | struct per_cpu_info *pci; | |
1058 | struct io_stats total, *ios; | |
1059 | int i, j, pci_events; | |
1060 | char line[3 + 8/*cpu*/ + 2 + 32/*dev*/ + 3]; | |
1061 | char name[32]; | |
1062 | ||
1063 | for (pdi = devices, i = 0; i < ndevices; i++, pdi++) { | |
1064 | ||
1065 | memset(&total, 0, sizeof(total)); | |
1066 | pci_events = 0; | |
1067 | ||
1068 | if (i > 0) | |
1069 | fprintf(ofp, "\n"); | |
1070 | ||
1071 | for (pci = pdi->cpus, j = 0; j < pdi->ncpus; j++, pci++) { | |
1072 | if (!pci->nelems) | |
1073 | continue; | |
1074 | ||
1075 | ios = &pci->io_stats; | |
1076 | total.qreads += ios->qreads; | |
1077 | total.qwrites += ios->qwrites; | |
1078 | total.creads += ios->creads; | |
1079 | total.cwrites += ios->cwrites; | |
1080 | total.mreads += ios->mreads; | |
1081 | total.mwrites += ios->mwrites; | |
1082 | total.ireads += ios->ireads; | |
1083 | total.iwrites += ios->iwrites; | |
1084 | total.qread_kb += ios->qread_kb; | |
1085 | total.qwrite_kb += ios->qwrite_kb; | |
1086 | total.cread_kb += ios->cread_kb; | |
1087 | total.cwrite_kb += ios->cwrite_kb; | |
1088 | total.iread_kb += ios->iread_kb; | |
1089 | total.iwrite_kb += ios->iwrite_kb; | |
06639b27 JA |
1090 | total.timer_unplugs += ios->timer_unplugs; |
1091 | total.io_unplugs += ios->io_unplugs; | |
e7c9f3ff NS |
1092 | |
1093 | snprintf(line, sizeof(line) - 1, "CPU%d (%s):", | |
1094 | j, get_dev_name(pdi, name, sizeof(name))); | |
1095 | dump_io_stats(ios, line); | |
1096 | pci_events++; | |
1097 | } | |
5c017e4b | 1098 | |
e7c9f3ff NS |
1099 | if (pci_events > 1) { |
1100 | fprintf(ofp, "\n"); | |
1101 | snprintf(line, sizeof(line) - 1, "Total (%s):", | |
1102 | get_dev_name(pdi, name, sizeof(name))); | |
1103 | dump_io_stats(&total, line); | |
1104 | } | |
d0ca268b | 1105 | |
dcf0f7ed | 1106 | fprintf(ofp, "\nEvents (%s): %'Lu entries, %'lu skips\n", |
0aa8a62d | 1107 | get_dev_name(pdi, line, sizeof(line)), pdi->events, |
dcf0f7ed | 1108 | pdi->skips); |
e7c9f3ff | 1109 | } |
d0ca268b JA |
1110 | } |
1111 | ||
d36421e4 JA |
1112 | /* |
1113 | * struct trace and blktrace allocation cache, we do potentially | |
1114 | * millions of mallocs for these structures while only using at most | |
1115 | * a few thousand at the time | |
1116 | */ | |
1117 | static inline void t_free(struct trace *t) | |
1118 | { | |
1119 | t->next = t_alloc_list; | |
1120 | t_alloc_list = t; | |
1121 | } | |
1122 | ||
1123 | static inline struct trace *t_alloc(void) | |
1124 | { | |
1125 | struct trace *t = t_alloc_list; | |
1126 | ||
1127 | if (t) { | |
1128 | t_alloc_list = t->next; | |
1129 | return t; | |
1130 | } | |
1131 | ||
1132 | return malloc(sizeof(*t)); | |
1133 | } | |
1134 | ||
1135 | static inline void bit_free(struct blk_io_trace *bit) | |
1136 | { | |
1137 | /* | |
1138 | * abuse a 64-bit field for a next pointer for the free item | |
1139 | */ | |
0c39425c | 1140 | bit->time = (__u64) (unsigned long) bit_alloc_list; |
d36421e4 JA |
1141 | bit_alloc_list = (struct blk_io_trace *) bit; |
1142 | } | |
1143 | ||
1144 | static inline struct blk_io_trace *bit_alloc(void) | |
1145 | { | |
1146 | struct blk_io_trace *bit = bit_alloc_list; | |
1147 | ||
1148 | if (bit) { | |
0c39425c NS |
1149 | bit_alloc_list = (struct blk_io_trace *) (unsigned long) \ |
1150 | bit->time; | |
d36421e4 JA |
1151 | return bit; |
1152 | } | |
1153 | ||
1154 | return malloc(sizeof(*bit)); | |
1155 | } | |
1156 | ||
4f0ae44f JA |
1157 | static void find_genesis(void) |
1158 | { | |
1159 | struct trace *t = trace_list; | |
1160 | ||
1161 | genesis_time = -1ULL; | |
1162 | while (t != NULL) { | |
1163 | if (t->bit->time < genesis_time) | |
1164 | genesis_time = t->bit->time; | |
1165 | ||
1166 | t = t->next; | |
1167 | } | |
1168 | } | |
1169 | ||
7f4d89e6 | 1170 | static inline int check_stopwatch(struct blk_io_trace *bit) |
4f0ae44f | 1171 | { |
7f4d89e6 JA |
1172 | if (bit->time < stopwatch_end && |
1173 | bit->time >= stopwatch_start) | |
4f0ae44f JA |
1174 | return 0; |
1175 | ||
1176 | return 1; | |
1177 | } | |
1178 | ||
1179 | static int sort_entries(void) | |
1180 | { | |
1181 | struct trace *t; | |
1182 | int nr = 0; | |
1183 | ||
1184 | if (!genesis_time) | |
1185 | find_genesis(); | |
1186 | ||
1187 | while ((t = trace_list) != NULL) { | |
1188 | struct blk_io_trace *bit = t->bit; | |
1189 | ||
1190 | trace_list = t->next; | |
1191 | ||
1192 | if (verify_trace(bit)) | |
1193 | continue; | |
1194 | ||
7f4d89e6 | 1195 | bit->time -= genesis_time; |
4f0ae44f | 1196 | |
7f4d89e6 | 1197 | if (check_stopwatch(bit)) { |
4f0ae44f JA |
1198 | bit_free(bit); |
1199 | t_free(t); | |
1200 | continue; | |
1201 | } | |
1202 | ||
1203 | if (trace_rb_insert(t)) | |
1204 | break; | |
1205 | ||
1206 | nr++; | |
1207 | } | |
1208 | ||
1209 | return nr; | |
1210 | } | |
1211 | ||
a649216c | 1212 | static void show_entries_rb(int force) |
8fc0abbc | 1213 | { |
1f7afa72 JA |
1214 | struct per_dev_info *pdi = NULL; |
1215 | struct per_cpu_info *pci = NULL; | |
8fc0abbc | 1216 | struct blk_io_trace *bit; |
3aabcd89 | 1217 | struct rb_node *n; |
8fc0abbc | 1218 | struct trace *t; |
1f7afa72 | 1219 | |
7d747d22 | 1220 | while ((n = rb_first(&rb_sort_root)) != NULL) { |
8fc0abbc | 1221 | |
1f7afa72 JA |
1222 | if (done) |
1223 | break; | |
8fc0abbc JA |
1224 | |
1225 | t = rb_entry(n, struct trace, rb_node); | |
1226 | bit = t->bit; | |
1227 | ||
287fa3d6 JA |
1228 | if (!pdi || pdi->id != bit->device) |
1229 | pdi = get_dev_info(bit->device); | |
1f7afa72 | 1230 | |
e7c9f3ff NS |
1231 | if (!pdi) { |
1232 | fprintf(stderr, "Unknown device ID? (%d,%d)\n", | |
1233 | MAJOR(bit->device), MINOR(bit->device)); | |
1234 | break; | |
1235 | } | |
1f7afa72 JA |
1236 | |
1237 | if (bit->cpu > pdi->ncpus) { | |
e7c9f3ff | 1238 | fprintf(stderr, "Unknown CPU ID? (%d, device %d,%d)\n", |
7d747d22 JA |
1239 | bit->cpu, MAJOR(bit->device), |
1240 | MINOR(bit->device)); | |
87b72777 | 1241 | break; |
8fc0abbc JA |
1242 | } |
1243 | ||
cb2a1a62 JA |
1244 | /* |
1245 | * back off displaying more info if we are out of sync | |
1246 | * on SMP systems. to prevent stalling on lost events, | |
287fa3d6 | 1247 | * only allow an event to skip us a few times |
cb2a1a62 | 1248 | */ |
0583b6a2 | 1249 | if (bit->sequence > (pdi->last_sequence + 1) && !force) { |
e3556946 JA |
1250 | struct trace *__t; |
1251 | ||
1252 | /* | |
1253 | * the wanted sequence is really there, continue | |
1254 | * because this means that the log time is earlier | |
1255 | * on the trace we have now | |
1256 | */ | |
0583b6a2 | 1257 | __t = trace_rb_find(pdi->id, pdi->last_sequence + 1); |
e3556946 JA |
1258 | if (__t) |
1259 | goto ok; | |
1260 | ||
7d747d22 | 1261 | if (t->skipped < 5) { |
0aa8a62d | 1262 | t->skipped++; |
cb2a1a62 | 1263 | break; |
e3556946 | 1264 | } else |
0aa8a62d | 1265 | pdi->skips++; |
cb2a1a62 JA |
1266 | } |
1267 | ||
e3556946 | 1268 | ok: |
a649216c | 1269 | if (!force && bit->time > last_allowed_time) |
46e6968b | 1270 | break; |
8fc0abbc | 1271 | |
be925321 JA |
1272 | pdi->last_sequence = bit->sequence; |
1273 | ||
4f0ae44f | 1274 | check_time(pdi, bit); |
8fc0abbc | 1275 | |
4f0ae44f JA |
1276 | if (!pci || pci->cpu != bit->cpu) |
1277 | pci = get_cpu_info(pdi, bit->cpu); | |
287fa3d6 | 1278 | |
4f0ae44f | 1279 | dump_trace(bit, pci, pdi); |
87b72777 | 1280 | |
7d747d22 | 1281 | rb_erase(&t->rb_node, &rb_sort_root); |
a649216c | 1282 | rb_sort_entries--; |
d36421e4 JA |
1283 | bit_free(bit); |
1284 | t_free(t); | |
cb2a1a62 | 1285 | } |
8fc0abbc JA |
1286 | } |
1287 | ||
1f79c4a0 JA |
1288 | static int read_data(int fd, void *buffer, int bytes, int block) |
1289 | { | |
1290 | int ret, bytes_left, fl; | |
1291 | void *p; | |
1292 | ||
1293 | fl = fcntl(fd, F_GETFL); | |
1294 | ||
1295 | if (!block) | |
1296 | fcntl(fd, F_SETFL, fl | O_NONBLOCK); | |
1297 | else | |
1298 | fcntl(fd, F_SETFL, fl & ~O_NONBLOCK); | |
1299 | ||
1300 | bytes_left = bytes; | |
1301 | p = buffer; | |
1302 | while (bytes_left > 0) { | |
1303 | ret = read(fd, p, bytes_left); | |
1304 | if (!ret) | |
1305 | return 1; | |
1306 | else if (ret < 0) { | |
1307 | if (errno != EAGAIN) | |
1308 | perror("read"); | |
a649216c | 1309 | |
1f79c4a0 JA |
1310 | return -1; |
1311 | } else { | |
1312 | p += ret; | |
1313 | bytes_left -= ret; | |
1314 | } | |
1315 | } | |
1316 | ||
1317 | return 0; | |
1318 | } | |
1319 | ||
a649216c | 1320 | static int read_events(int fd, int always_block) |
cb2a1a62 | 1321 | { |
287fa3d6 | 1322 | struct per_dev_info *pdi = NULL; |
7d747d22 JA |
1323 | int events = 0; |
1324 | ||
1325 | while (!is_done() && events < rb_batch) { | |
1326 | struct blk_io_trace *bit; | |
1327 | struct trace *t; | |
1328 | int pdu_len; | |
1329 | __u32 magic; | |
1330 | ||
d36421e4 | 1331 | bit = bit_alloc(); |
cb2a1a62 | 1332 | |
a649216c | 1333 | if (read_data(fd, bit, sizeof(*bit), !events || always_block)) |
cb2a1a62 JA |
1334 | break; |
1335 | ||
7d747d22 JA |
1336 | magic = be32_to_cpu(bit->magic); |
1337 | if ((magic & 0xffffff00) != BLK_IO_TRACE_MAGIC) { | |
1338 | fprintf(stderr, "Bad magic %x\n", magic); | |
1339 | break; | |
1340 | } | |
1341 | ||
1342 | pdu_len = be16_to_cpu(bit->pdu_len); | |
1343 | if (pdu_len) { | |
1344 | void *ptr = realloc(bit, sizeof(*bit) + pdu_len); | |
1345 | ||
1346 | if (read_data(fd, ptr + sizeof(*bit), pdu_len, 1)) | |
1347 | break; | |
1348 | ||
1349 | bit = ptr; | |
1350 | } | |
1351 | ||
d36421e4 | 1352 | t = t_alloc(); |
cb2a1a62 JA |
1353 | memset(t, 0, sizeof(*t)); |
1354 | t->bit = bit; | |
1355 | ||
f1327cc5 | 1356 | trace_to_cpu(bit); |
4f0ae44f | 1357 | |
7d747d22 JA |
1358 | t->next = trace_list; |
1359 | trace_list = t; | |
1f7afa72 | 1360 | |
287fa3d6 JA |
1361 | if (!pdi || pdi->id != bit->device) |
1362 | pdi = get_dev_info(bit->device); | |
1363 | ||
1364 | if (bit->time > pdi->last_read_time) | |
1365 | pdi->last_read_time = bit->time; | |
1366 | ||
7d747d22 | 1367 | events++; |
cb2a1a62 JA |
1368 | } |
1369 | ||
7d747d22 | 1370 | return events; |
cb2a1a62 JA |
1371 | } |
1372 | ||
d5396421 | 1373 | static int do_file(void) |
d0ca268b | 1374 | { |
7d747d22 | 1375 | struct per_cpu_info *pci; |
73877e12 NS |
1376 | struct per_dev_info *pdi; |
1377 | int i, j, events, events_added; | |
d0ca268b | 1378 | |
7d747d22 JA |
1379 | /* |
1380 | * first prepare all files for reading | |
1381 | */ | |
e8741a4a | 1382 | for (i = 0; i < ndevices; i++) { |
73877e12 NS |
1383 | pdi = &devices[i]; |
1384 | pdi->nfiles = 0; | |
0583b6a2 | 1385 | pdi->last_sequence = 0; |
73877e12 | 1386 | |
74feaeb5 | 1387 | for (j = 0;; j++) { |
e7c9f3ff | 1388 | struct stat st; |
87b72777 | 1389 | |
e7c9f3ff NS |
1390 | pci = get_cpu_info(pdi, j); |
1391 | pci->cpu = j; | |
7d747d22 | 1392 | pci->fd = -1; |
d0ca268b | 1393 | |
e7c9f3ff | 1394 | snprintf(pci->fname, sizeof(pci->fname)-1, |
7d747d22 | 1395 | "%s.blktrace.%d", pdi->name, pci->cpu); |
e7c9f3ff NS |
1396 | if (stat(pci->fname, &st) < 0) |
1397 | break; | |
74feaeb5 AB |
1398 | if (st.st_size) { |
1399 | pci->fd = open(pci->fname, O_RDONLY); | |
1400 | if (pci->fd < 0) { | |
1401 | perror(pci->fname); | |
1402 | continue; | |
1403 | } | |
e7c9f3ff NS |
1404 | } |
1405 | ||
7d747d22 | 1406 | printf("Input file %s added\n", pci->fname); |
73877e12 | 1407 | pdi->nfiles++; |
d0ca268b | 1408 | } |
d5396421 JA |
1409 | } |
1410 | ||
7d747d22 JA |
1411 | /* |
1412 | * now loop over the files reading in the data | |
1413 | */ | |
412819ce | 1414 | do { |
7d747d22 | 1415 | events_added = 0; |
287fa3d6 | 1416 | last_allowed_time = -1ULL; |
d5396421 | 1417 | |
7d747d22 | 1418 | for (i = 0; i < ndevices; i++) { |
73877e12 NS |
1419 | pdi = &devices[i]; |
1420 | ||
1421 | for (j = 0; j < pdi->nfiles; j++) { | |
d5396421 | 1422 | |
73877e12 | 1423 | pci = get_cpu_info(pdi, j); |
d5396421 | 1424 | |
7d747d22 JA |
1425 | if (pci->fd == -1) |
1426 | continue; | |
51128a28 | 1427 | |
a649216c | 1428 | events = read_events(pci->fd, 1); |
7d747d22 JA |
1429 | if (!events) { |
1430 | close(pci->fd); | |
1431 | pci->fd = -1; | |
1432 | continue; | |
1433 | } | |
d5396421 | 1434 | |
287fa3d6 JA |
1435 | if (pdi->last_read_time < last_allowed_time) |
1436 | last_allowed_time = pdi->last_read_time; | |
d5396421 | 1437 | |
7d747d22 JA |
1438 | events_added += events; |
1439 | } | |
2ff323b0 | 1440 | } |
d5396421 | 1441 | |
287fa3d6 JA |
1442 | if (sort_entries() == -1) |
1443 | break; | |
1444 | ||
a649216c | 1445 | show_entries_rb(0); |
cb2a1a62 | 1446 | |
7d747d22 | 1447 | } while (events_added); |
d5396421 | 1448 | |
a649216c JA |
1449 | if (rb_sort_entries) |
1450 | show_entries_rb(1); | |
1451 | ||
7d747d22 | 1452 | return 0; |
412819ce | 1453 | } |
d5396421 | 1454 | |
412819ce JA |
1455 | static int do_stdin(void) |
1456 | { | |
1457 | int fd; | |
d5396421 | 1458 | |
be925321 | 1459 | last_allowed_time = -1ULL; |
1f79c4a0 | 1460 | fd = dup(STDIN_FILENO); |
412819ce JA |
1461 | do { |
1462 | int events; | |
d5396421 | 1463 | |
a649216c | 1464 | events = read_events(fd, 0); |
412819ce JA |
1465 | if (!events) |
1466 | break; | |
1467 | ||
cb2a1a62 | 1468 | if (sort_entries() == -1) |
2ff323b0 JA |
1469 | break; |
1470 | ||
a649216c | 1471 | show_entries_rb(0); |
d5396421 JA |
1472 | } while (1); |
1473 | ||
a649216c JA |
1474 | if (rb_sort_entries) |
1475 | show_entries_rb(1); | |
1476 | ||
d5396421 | 1477 | close(fd); |
d5396421 JA |
1478 | return 0; |
1479 | } | |
d0ca268b | 1480 | |
1f79c4a0 | 1481 | static void flush_output(void) |
412819ce | 1482 | { |
152f6476 | 1483 | fflush(ofp); |
412819ce JA |
1484 | } |
1485 | ||
1f79c4a0 | 1486 | static void handle_sigint(int sig) |
412819ce JA |
1487 | { |
1488 | done = 1; | |
1489 | flush_output(); | |
1490 | } | |
1491 | ||
46e6968b NS |
1492 | /* |
1493 | * Extract start and duration times from a string, allowing | |
1494 | * us to specify a time interval of interest within a trace. | |
1495 | * Format: "duration" (start is zero) or "start:duration". | |
1496 | */ | |
1497 | static int find_stopwatch_interval(char *string) | |
1498 | { | |
1499 | double value; | |
1500 | char *sp; | |
1501 | ||
1502 | value = strtod(string, &sp); | |
1503 | if (sp == string) { | |
1504 | fprintf(stderr,"Invalid stopwatch timer: %s\n", string); | |
1505 | return 1; | |
1506 | } | |
1507 | if (*sp == ':') { | |
1508 | stopwatch_start = DOUBLE_TO_NANO_ULL(value); | |
1509 | string = sp + 1; | |
1510 | value = strtod(string, &sp); | |
1511 | if (sp == string || *sp != '\0') { | |
1512 | fprintf(stderr,"Invalid stopwatch duration time: %s\n", | |
1513 | string); | |
1514 | return 1; | |
1515 | } | |
1516 | } else if (*sp != '\0') { | |
1517 | fprintf(stderr,"Invalid stopwatch start timer: %s\n", string); | |
1518 | return 1; | |
1519 | } | |
1b928247 JA |
1520 | stopwatch_end = DOUBLE_TO_NANO_ULL(value); |
1521 | if (stopwatch_end <= stopwatch_start) { | |
1522 | fprintf(stderr, "Invalid stopwatch interval: %Lu -> %Lu\n", | |
1523 | stopwatch_start, stopwatch_end); | |
1524 | return 1; | |
1525 | } | |
1526 | ||
46e6968b NS |
1527 | return 0; |
1528 | } | |
1529 | ||
52724a0e JA |
1530 | static char usage_str[] = \ |
1531 | "[ -i <input name> ] [-o <output name> [ -s ] [ -t ] [ -q ]\n" \ | |
1532 | "[ -w start:stop ] [ -f output format ] [ -F format spec ] [ -v] \n\n" \ | |
1533 | "\t-i Input file containing trace data, or '-' for stdin\n" \ | |
1534 | "\t-o Output file. If not given, output is stdout\n" \ | |
1535 | "\t-b stdin read batching\n" \ | |
1536 | "\t-s Show per-program io statistics\n" \ | |
bf0720af | 1537 | "\t-n Hash processes by name, not pid\n" \ |
52724a0e JA |
1538 | "\t-t Track individual ios. Will tell you the time a request took\n" \ |
1539 | "\t to get queued, to get dispatched, and to get completed\n" \ | |
1540 | "\t-q Quiet. Don't display any stats at the end of the trace\n" \ | |
1541 | "\t-w Only parse data between the given time interval in seconds.\n" \ | |
1542 | "\t If 'start' isn't given, blkparse defaults the start time to 0\n" \ | |
1543 | "\t -f Output format. Customize the output format. The format field\n" \ | |
1544 | "\t identifies can be found in the documentation\n" \ | |
1545 | "\t-F Format specification. Can be found in the documentation\n" \ | |
1546 | "\t-v Print program version info\n\n"; | |
1547 | ||
1f79c4a0 JA |
1548 | static void usage(char *prog) |
1549 | { | |
52724a0e | 1550 | fprintf(stderr, "Usage: %s %s %s", prog, blkparse_version, usage_str); |
1f79c4a0 JA |
1551 | } |
1552 | ||
d5396421 JA |
1553 | int main(int argc, char *argv[]) |
1554 | { | |
152f6476 | 1555 | char *ofp_buffer; |
a66877e6 | 1556 | int c, ret, mode; |
1e1c60f1 | 1557 | int per_device_and_cpu_stats = 1; |
d5396421 JA |
1558 | |
1559 | while ((c = getopt_long(argc, argv, S_OPTS, l_opts, NULL)) != -1) { | |
1560 | switch (c) { | |
1561 | case 'i': | |
e7c9f3ff NS |
1562 | if (!strcmp(optarg, "-") && !pipeline) |
1563 | pipeline = 1; | |
1564 | else if (resize_devices(optarg) != 0) | |
1565 | return 1; | |
d5396421 JA |
1566 | break; |
1567 | case 'o': | |
66efebf8 | 1568 | output_name = optarg; |
d5396421 | 1569 | break; |
79f19470 JA |
1570 | case 'b': |
1571 | rb_batch = atoi(optarg); | |
1572 | if (rb_batch <= 0) | |
1573 | rb_batch = RB_BATCH_DEFAULT; | |
1574 | break; | |
152f6476 JA |
1575 | case 's': |
1576 | per_process_stats = 1; | |
1577 | break; | |
7997c5b0 JA |
1578 | case 't': |
1579 | track_ios = 1; | |
1580 | break; | |
1e1c60f1 NS |
1581 | case 'q': |
1582 | per_device_and_cpu_stats = 0; | |
1583 | break; | |
46e6968b NS |
1584 | case 'w': |
1585 | if (find_stopwatch_interval(optarg) != 0) | |
1586 | return 1; | |
1587 | break; | |
ab197ca7 AB |
1588 | case 'f': |
1589 | set_all_format_specs(optarg); | |
1590 | break; | |
1591 | case 'F': | |
1592 | if (add_format_spec(optarg) != 0) | |
1593 | return 1; | |
1594 | break; | |
bf0720af | 1595 | case 'n': |
715d8021 | 1596 | ppi_hash_by_pid = 0; |
bf0720af | 1597 | break; |
52724a0e JA |
1598 | case 'v': |
1599 | printf("%s version %s\n", argv[0], blkparse_version); | |
1600 | return 0; | |
d5396421 | 1601 | default: |
1f79c4a0 | 1602 | usage(argv[0]); |
d5396421 JA |
1603 | return 1; |
1604 | } | |
d0ca268b JA |
1605 | } |
1606 | ||
e7c9f3ff NS |
1607 | while (optind < argc) { |
1608 | if (!strcmp(argv[optind], "-") && !pipeline) | |
1609 | pipeline = 1; | |
1610 | else if (resize_devices(argv[optind]) != 0) | |
1611 | return 1; | |
1612 | optind++; | |
1613 | } | |
1614 | ||
1615 | if (!pipeline && !ndevices) { | |
1f79c4a0 | 1616 | usage(argv[0]); |
d5396421 JA |
1617 | return 1; |
1618 | } | |
1619 | ||
7997c5b0 JA |
1620 | memset(&rb_sort_root, 0, sizeof(rb_sort_root)); |
1621 | memset(&rb_track_root, 0, sizeof(rb_track_root)); | |
412819ce JA |
1622 | |
1623 | signal(SIGINT, handle_sigint); | |
1624 | signal(SIGHUP, handle_sigint); | |
1625 | signal(SIGTERM, handle_sigint); | |
d5396421 | 1626 | |
d69db225 JA |
1627 | setlocale(LC_NUMERIC, "en_US"); |
1628 | ||
a66877e6 | 1629 | if (!output_name) { |
152f6476 | 1630 | ofp = fdopen(STDOUT_FILENO, "w"); |
a66877e6 JA |
1631 | mode = _IOLBF; |
1632 | } else { | |
152f6476 JA |
1633 | char ofname[128]; |
1634 | ||
7a9690c0 | 1635 | snprintf(ofname, sizeof(ofname) - 1, "%s", output_name); |
152f6476 | 1636 | ofp = fopen(ofname, "w"); |
a66877e6 | 1637 | mode = _IOFBF; |
152f6476 JA |
1638 | } |
1639 | ||
1640 | if (!ofp) { | |
1641 | perror("fopen"); | |
1642 | return 1; | |
1643 | } | |
1644 | ||
1645 | ofp_buffer = malloc(4096); | |
a66877e6 | 1646 | if (setvbuf(ofp, ofp_buffer, mode, 4096)) { |
152f6476 JA |
1647 | perror("setvbuf"); |
1648 | return 1; | |
1649 | } | |
1650 | ||
e7c9f3ff | 1651 | if (pipeline) |
d5396421 JA |
1652 | ret = do_stdin(); |
1653 | else | |
1654 | ret = do_file(); | |
1655 | ||
152f6476 JA |
1656 | if (per_process_stats) |
1657 | show_process_stats(); | |
1658 | ||
1e1c60f1 NS |
1659 | if (per_device_and_cpu_stats) |
1660 | show_device_and_cpu_stats(); | |
152f6476 | 1661 | |
412819ce | 1662 | flush_output(); |
d5396421 | 1663 | return ret; |
d0ca268b | 1664 | } |