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> |
6e0073ed | 32 | #include <libgen.h> |
d0ca268b | 33 | |
8fc0abbc JA |
34 | #include "blktrace.h" |
35 | #include "rbtree.h" | |
bf0720af | 36 | #include "jhash.h" |
d0ca268b | 37 | |
13d928f0 | 38 | static char blkparse_version[] = "0.99"; |
52724a0e | 39 | |
492da111 AB |
40 | struct skip_info { |
41 | unsigned long start, end; | |
42 | struct skip_info *prev, *next; | |
43 | }; | |
44 | ||
e7c9f3ff | 45 | struct per_dev_info { |
f7bd1a9b | 46 | dev_t dev; |
e7c9f3ff NS |
47 | char *name; |
48 | ||
49 | int backwards; | |
50 | unsigned long long events; | |
20ed6177 | 51 | unsigned long long first_reported_time; |
e7c9f3ff | 52 | unsigned long long last_reported_time; |
287fa3d6 | 53 | unsigned long long last_read_time; |
e7c9f3ff | 54 | struct io_stats io_stats; |
cb2a1a62 | 55 | unsigned long last_sequence; |
dce0f678 AB |
56 | unsigned long skips, nskips; |
57 | unsigned long long seq_skips, seq_nskips; | |
649c7b66 JA |
58 | unsigned int max_depth[2]; |
59 | unsigned int cur_depth[2]; | |
e7c9f3ff | 60 | |
2a1b3424 JA |
61 | struct rb_root rb_last; |
62 | unsigned long rb_last_entries; | |
63 | ||
f7bd1a9b JA |
64 | struct rb_root rb_track; |
65 | ||
73877e12 | 66 | int nfiles; |
e7c9f3ff | 67 | int ncpus; |
824c2b39 JA |
68 | |
69 | unsigned long *cpu_map; | |
70 | unsigned int cpu_map_max; | |
71 | ||
e7c9f3ff | 72 | struct per_cpu_info *cpus; |
492da111 AB |
73 | struct skip_info *skips_head; |
74 | struct skip_info *skips_tail; | |
e7c9f3ff NS |
75 | }; |
76 | ||
152f6476 JA |
77 | struct per_process_info { |
78 | char name[16]; | |
79 | __u32 pid; | |
80 | struct io_stats io_stats; | |
81 | struct per_process_info *hash_next, *list_next; | |
715d8021 | 82 | int more_than_one; |
50adc0ba JA |
83 | |
84 | /* | |
85 | * individual io stats | |
86 | */ | |
b9d40d6f JA |
87 | unsigned long long longest_allocation_wait[2]; |
88 | unsigned long long longest_dispatch_wait[2]; | |
89 | unsigned long long longest_completion_wait[2]; | |
d0ca268b JA |
90 | }; |
91 | ||
152f6476 | 92 | #define PPI_HASH_SHIFT (8) |
bf0720af JA |
93 | #define PPI_HASH_SIZE (1 << PPI_HASH_SHIFT) |
94 | #define PPI_HASH_MASK (PPI_HASH_SIZE - 1) | |
95 | static struct per_process_info *ppi_hash_table[PPI_HASH_SIZE]; | |
152f6476 | 96 | static struct per_process_info *ppi_list; |
886ecf0e | 97 | static int ppi_list_entries; |
152f6476 | 98 | |
d915dee6 | 99 | #define S_OPTS "a:A:i:o:b:stqw:f:F:vVhD:" |
d5396421 | 100 | static struct option l_opts[] = { |
98f8386b AB |
101 | { |
102 | .name = "act-mask", | |
103 | .has_arg = required_argument, | |
104 | .flag = NULL, | |
105 | .val = 'a' | |
106 | }, | |
107 | { | |
108 | .name = "set-mask", | |
109 | .has_arg = required_argument, | |
110 | .flag = NULL, | |
111 | .val = 'A' | |
112 | }, | |
d5396421 JA |
113 | { |
114 | .name = "input", | |
428683db | 115 | .has_arg = required_argument, |
d5396421 JA |
116 | .flag = NULL, |
117 | .val = 'i' | |
118 | }, | |
119 | { | |
120 | .name = "output", | |
428683db | 121 | .has_arg = required_argument, |
d5396421 JA |
122 | .flag = NULL, |
123 | .val = 'o' | |
124 | }, | |
79f19470 JA |
125 | { |
126 | .name = "batch", | |
428683db | 127 | .has_arg = required_argument, |
79f19470 JA |
128 | .flag = NULL, |
129 | .val = 'b' | |
130 | }, | |
152f6476 | 131 | { |
3f65c585 | 132 | .name = "per-program-stats", |
428683db | 133 | .has_arg = no_argument, |
152f6476 JA |
134 | .flag = NULL, |
135 | .val = 's' | |
136 | }, | |
7997c5b0 | 137 | { |
3f65c585 | 138 | .name = "track-ios", |
428683db | 139 | .has_arg = no_argument, |
7997c5b0 JA |
140 | .flag = NULL, |
141 | .val = 't' | |
142 | }, | |
1e1c60f1 NS |
143 | { |
144 | .name = "quiet", | |
428683db | 145 | .has_arg = no_argument, |
1e1c60f1 NS |
146 | .flag = NULL, |
147 | .val = 'q' | |
148 | }, | |
46e6968b NS |
149 | { |
150 | .name = "stopwatch", | |
428683db | 151 | .has_arg = required_argument, |
46e6968b NS |
152 | .flag = NULL, |
153 | .val = 'w' | |
154 | }, | |
ab197ca7 AB |
155 | { |
156 | .name = "format", | |
428683db | 157 | .has_arg = required_argument, |
ab197ca7 AB |
158 | .flag = NULL, |
159 | .val = 'f' | |
160 | }, | |
161 | { | |
162 | .name = "format-spec", | |
428683db | 163 | .has_arg = required_argument, |
ab197ca7 AB |
164 | .flag = NULL, |
165 | .val = 'F' | |
166 | }, | |
bf0720af | 167 | { |
3f65c585 | 168 | .name = "hash-by-name", |
bf0720af JA |
169 | .has_arg = no_argument, |
170 | .flag = NULL, | |
d915dee6 | 171 | .val = 'h' |
bf0720af | 172 | }, |
7d1c0411 | 173 | { |
57ea8602 | 174 | .name = "verbose", |
7d1c0411 JA |
175 | .has_arg = no_argument, |
176 | .flag = NULL, | |
57ea8602 | 177 | .val = 'v' |
7d1c0411 | 178 | }, |
52724a0e JA |
179 | { |
180 | .name = "version", | |
181 | .has_arg = no_argument, | |
182 | .flag = NULL, | |
57ea8602 | 183 | .val = 'V' |
52724a0e | 184 | }, |
d1d7f15f | 185 | { |
3f65c585 | 186 | .name = "input-directory", |
d1d7f15f JA |
187 | .has_arg = required_argument, |
188 | .flag = NULL, | |
189 | .val = 'D' | |
190 | }, | |
71ef8b7c JA |
191 | { |
192 | .name = NULL, | |
193 | } | |
d5396421 JA |
194 | }; |
195 | ||
7997c5b0 JA |
196 | /* |
197 | * for sorting the displayed output | |
198 | */ | |
8fc0abbc JA |
199 | struct trace { |
200 | struct blk_io_trace *bit; | |
201 | struct rb_node rb_node; | |
cb2a1a62 | 202 | struct trace *next; |
8fc0abbc JA |
203 | }; |
204 | ||
cb2a1a62 | 205 | static struct rb_root rb_sort_root; |
a649216c JA |
206 | static unsigned long rb_sort_entries; |
207 | ||
cb2a1a62 JA |
208 | static struct trace *trace_list; |
209 | ||
d36421e4 JA |
210 | /* |
211 | * allocation cache | |
212 | */ | |
213 | static struct blk_io_trace *bit_alloc_list; | |
214 | static struct trace *t_alloc_list; | |
215 | ||
7997c5b0 JA |
216 | /* |
217 | * for tracking individual ios | |
218 | */ | |
219 | struct io_track { | |
220 | struct rb_node rb_node; | |
221 | ||
222 | __u64 sector; | |
223 | __u32 pid; | |
bf0720af | 224 | char comm[16]; |
95c15013 | 225 | unsigned long long allocation_time; |
7997c5b0 JA |
226 | unsigned long long queue_time; |
227 | unsigned long long dispatch_time; | |
228 | unsigned long long completion_time; | |
229 | }; | |
230 | ||
e7c9f3ff NS |
231 | static int ndevices; |
232 | static struct per_dev_info *devices; | |
233 | static char *get_dev_name(struct per_dev_info *, char *, int); | |
d0ca268b | 234 | |
71d5d4c9 | 235 | FILE *ofp = NULL; |
e7c9f3ff | 236 | static char *output_name; |
d1d7f15f | 237 | static char *input_dir; |
e7c9f3ff NS |
238 | |
239 | static unsigned long long genesis_time; | |
287fa3d6 | 240 | static unsigned long long last_allowed_time; |
1c7c54aa | 241 | static unsigned int smallest_seq_read; |
46e6968b | 242 | static unsigned long long stopwatch_start; /* start from zero by default */ |
bc171579 | 243 | static unsigned long long stopwatch_end = -1ULL; /* "infinity" */ |
152f6476 JA |
244 | |
245 | static int per_process_stats; | |
cbc927b6 | 246 | static int per_device_and_cpu_stats = 1; |
7997c5b0 | 247 | static int track_ios; |
bf0720af | 248 | static int ppi_hash_by_pid = 1; |
57ea8602 | 249 | static int verbose; |
98f8386b | 250 | static unsigned int act_mask = -1U; |
cbc927b6 | 251 | static int stats_printed; |
d0ca268b | 252 | |
1d24fc14 JA |
253 | static unsigned int t_alloc_cache; |
254 | static unsigned int bit_alloc_cache; | |
255 | ||
7d747d22 | 256 | #define RB_BATCH_DEFAULT (512) |
e820abd7 | 257 | static unsigned int rb_batch = RB_BATCH_DEFAULT; |
79f19470 | 258 | |
e7c9f3ff NS |
259 | static int pipeline; |
260 | ||
412819ce JA |
261 | #define is_done() (*(volatile int *)(&done)) |
262 | static volatile int done; | |
263 | ||
bf0720af JA |
264 | #define JHASH_RANDOM (0x3af5f2ee) |
265 | ||
824c2b39 JA |
266 | #define CPUS_PER_LONG (8 * sizeof(unsigned long)) |
267 | #define CPU_IDX(cpu) ((cpu) / CPUS_PER_LONG) | |
268 | #define CPU_BIT(cpu) ((cpu) & (CPUS_PER_LONG - 1)) | |
269 | ||
492da111 AB |
270 | static void insert_skip(struct per_dev_info *pdi, unsigned long start, |
271 | unsigned long end) | |
272 | { | |
273 | struct skip_info *sip; | |
274 | ||
275 | for (sip = pdi->skips_tail; sip != NULL; sip = sip->prev) { | |
276 | if (end == (sip->start - 1)) { | |
277 | sip->start = start; | |
278 | return; | |
279 | } else if (start == (sip->end + 1)) { | |
280 | sip->end = end; | |
281 | return; | |
282 | } | |
283 | } | |
284 | ||
285 | sip = malloc(sizeof(struct skip_info)); | |
286 | sip->start = start; | |
287 | sip->end = end; | |
288 | sip->prev = sip->next = NULL; | |
289 | if (pdi->skips_tail == NULL) | |
290 | pdi->skips_head = pdi->skips_tail = sip; | |
291 | else { | |
292 | sip->prev = pdi->skips_tail; | |
293 | pdi->skips_tail->next = sip; | |
294 | pdi->skips_tail = sip; | |
295 | } | |
296 | } | |
297 | ||
298 | static void remove_sip(struct per_dev_info *pdi, struct skip_info *sip) | |
299 | { | |
300 | if (sip->prev == NULL) { | |
301 | if (sip->next == NULL) | |
302 | pdi->skips_head = pdi->skips_tail = NULL; | |
303 | else { | |
304 | pdi->skips_head = sip->next; | |
305 | sip->next->prev = NULL; | |
306 | } | |
307 | } else if (sip->next == NULL) { | |
308 | pdi->skips_tail = sip->prev; | |
309 | sip->prev->next = NULL; | |
310 | } else { | |
311 | sip->prev->next = sip->next; | |
312 | sip->next->prev = sip->prev; | |
313 | } | |
314 | ||
315 | sip->prev = sip->next = NULL; | |
316 | free(sip); | |
317 | } | |
318 | ||
319 | #define IN_SKIP(sip,seq) (((sip)->start <= (seq)) && ((seq) <= sip->end)) | |
320 | static int check_current_skips(struct per_dev_info *pdi, unsigned long seq) | |
321 | { | |
322 | struct skip_info *sip; | |
323 | ||
324 | for (sip = pdi->skips_tail; sip != NULL; sip = sip->prev) { | |
325 | if (IN_SKIP(sip,seq)) { | |
326 | if (sip->start == seq) { | |
327 | if (sip->end == seq) | |
328 | remove_sip(pdi,sip); | |
329 | else | |
330 | sip->start += 1; | |
331 | } else if (sip->end == seq) | |
332 | sip->end -= 1; | |
333 | else { | |
334 | sip->end = seq - 1; | |
335 | insert_skip(pdi,seq+1,sip->end); | |
336 | } | |
337 | return 1; | |
338 | } | |
339 | } | |
340 | return 0; | |
341 | } | |
342 | ||
343 | static void collect_pdi_skips(struct per_dev_info *pdi) | |
344 | { | |
345 | struct skip_info *sip; | |
346 | ||
347 | pdi->skips = 0; | |
348 | pdi->seq_skips = 0; | |
f4f763ca | 349 | for (sip = pdi->skips_head; sip != NULL; sip = sip->next) { |
492da111 AB |
350 | pdi->skips += 1; |
351 | pdi->seq_skips += (sip->end - sip->start + 1); | |
352 | if (verbose) | |
353 | fprintf(stderr, "(%d,%d): skipping %lu -> %lu\n", | |
354 | MAJOR(pdi->dev), MINOR(pdi->dev), | |
355 | sip->start, sip->end); | |
356 | } | |
357 | } | |
358 | ||
824c2b39 JA |
359 | static void cpu_mark_online(struct per_dev_info *pdi, unsigned int cpu) |
360 | { | |
361 | if (cpu >= pdi->cpu_map_max || !pdi->cpu_map) { | |
362 | int new_max = (cpu + CPUS_PER_LONG) & ~(CPUS_PER_LONG - 1); | |
363 | unsigned long *map = malloc(new_max / sizeof(long)); | |
364 | ||
365 | memset(map, 0, new_max / sizeof(long)); | |
366 | ||
367 | if (pdi->cpu_map) { | |
368 | memcpy(map, pdi->cpu_map, pdi->cpu_map_max / sizeof(long)); | |
369 | free(pdi->cpu_map); | |
370 | } | |
371 | ||
372 | pdi->cpu_map = map; | |
373 | pdi->cpu_map_max = new_max; | |
374 | } | |
375 | ||
376 | pdi->cpu_map[CPU_IDX(cpu)] |= (1UL << CPU_BIT(cpu)); | |
377 | } | |
378 | ||
379 | static inline void cpu_mark_offline(struct per_dev_info *pdi, int cpu) | |
380 | { | |
381 | pdi->cpu_map[CPU_IDX(cpu)] &= ~(1UL << CPU_BIT(cpu)); | |
382 | } | |
383 | ||
384 | static inline int cpu_is_online(struct per_dev_info *pdi, int cpu) | |
385 | { | |
386 | return (pdi->cpu_map[CPU_IDX(cpu)] & (1UL << CPU_BIT(cpu))) != 0; | |
387 | } | |
388 | ||
bf0720af JA |
389 | static inline int ppi_hash_pid(__u32 pid) |
390 | { | |
391 | return jhash_1word(pid, JHASH_RANDOM) & PPI_HASH_MASK; | |
392 | } | |
393 | ||
394 | static inline int ppi_hash_name(const char *name) | |
152f6476 | 395 | { |
bf0720af JA |
396 | return jhash(name, 16, JHASH_RANDOM) & PPI_HASH_MASK; |
397 | } | |
398 | ||
399 | static inline int ppi_hash(struct per_process_info *ppi) | |
400 | { | |
401 | if (ppi_hash_by_pid) | |
402 | return ppi_hash_pid(ppi->pid); | |
403 | ||
bf0720af | 404 | return ppi_hash_name(ppi->name); |
152f6476 JA |
405 | } |
406 | ||
407 | static inline void add_process_to_hash(struct per_process_info *ppi) | |
408 | { | |
bf0720af | 409 | const int hash_idx = ppi_hash(ppi); |
152f6476 | 410 | |
bf0720af JA |
411 | ppi->hash_next = ppi_hash_table[hash_idx]; |
412 | ppi_hash_table[hash_idx] = ppi; | |
152f6476 JA |
413 | } |
414 | ||
415 | static inline void add_process_to_list(struct per_process_info *ppi) | |
416 | { | |
417 | ppi->list_next = ppi_list; | |
418 | ppi_list = ppi; | |
886ecf0e | 419 | ppi_list_entries++; |
152f6476 JA |
420 | } |
421 | ||
bf0720af JA |
422 | static struct per_process_info *find_process_by_name(char *name) |
423 | { | |
424 | const int hash_idx = ppi_hash_name(name); | |
425 | struct per_process_info *ppi; | |
426 | ||
427 | ppi = ppi_hash_table[hash_idx]; | |
428 | while (ppi) { | |
429 | if (!strcmp(ppi->name, name)) | |
430 | return ppi; | |
431 | ||
432 | ppi = ppi->hash_next; | |
433 | } | |
434 | ||
435 | return NULL; | |
436 | } | |
437 | ||
152f6476 JA |
438 | static struct per_process_info *find_process_by_pid(__u32 pid) |
439 | { | |
bf0720af | 440 | const int hash_idx = ppi_hash_pid(pid); |
152f6476 JA |
441 | struct per_process_info *ppi; |
442 | ||
bf0720af | 443 | ppi = ppi_hash_table[hash_idx]; |
152f6476 JA |
444 | while (ppi) { |
445 | if (ppi->pid == pid) | |
446 | return ppi; | |
447 | ||
448 | ppi = ppi->hash_next; | |
449 | } | |
450 | ||
451 | return NULL; | |
452 | } | |
453 | ||
bf0720af JA |
454 | static struct per_process_info *find_process(__u32 pid, char *name) |
455 | { | |
715d8021 JA |
456 | struct per_process_info *ppi; |
457 | ||
bf0720af JA |
458 | if (ppi_hash_by_pid) |
459 | return find_process_by_pid(pid); | |
460 | ||
715d8021 JA |
461 | ppi = find_process_by_name(name); |
462 | if (ppi && ppi->pid != pid) | |
463 | ppi->more_than_one = 1; | |
464 | ||
465 | return ppi; | |
bf0720af JA |
466 | } |
467 | ||
23211fdf JA |
468 | static inline int trace_rb_insert(struct trace *t, struct rb_root *root, |
469 | int check_time) | |
7997c5b0 | 470 | { |
2a1b3424 | 471 | struct rb_node **p = &root->rb_node; |
7997c5b0 JA |
472 | struct rb_node *parent = NULL; |
473 | struct trace *__t; | |
474 | ||
475 | while (*p) { | |
476 | parent = *p; | |
2a1b3424 | 477 | |
7997c5b0 JA |
478 | __t = rb_entry(parent, struct trace, rb_node); |
479 | ||
23211fdf JA |
480 | if (check_time) { |
481 | if (t->bit->time < __t->bit->time) { | |
482 | p = &(*p)->rb_left; | |
483 | continue; | |
484 | } else if (t->bit->time > __t->bit->time) { | |
485 | p = &(*p)->rb_right; | |
486 | continue; | |
487 | } | |
488 | } | |
489 | if (t->bit->device < __t->bit->device) | |
e7c9f3ff NS |
490 | p = &(*p)->rb_left; |
491 | else if (t->bit->device > __t->bit->device) | |
492 | p = &(*p)->rb_right; | |
dcf0f7ed JA |
493 | else if (t->bit->sequence < __t->bit->sequence) |
494 | p = &(*p)->rb_left; | |
0b07f23e | 495 | else /* >= sequence */ |
dcf0f7ed | 496 | p = &(*p)->rb_right; |
7997c5b0 JA |
497 | } |
498 | ||
499 | rb_link_node(&t->rb_node, parent, p); | |
2a1b3424 | 500 | rb_insert_color(&t->rb_node, root); |
7997c5b0 JA |
501 | return 0; |
502 | } | |
503 | ||
2a1b3424 | 504 | static inline int trace_rb_insert_sort(struct trace *t) |
e3556946 | 505 | { |
23211fdf | 506 | if (!trace_rb_insert(t, &rb_sort_root, 1)) { |
2a1b3424 JA |
507 | rb_sort_entries++; |
508 | return 0; | |
509 | } | |
510 | ||
511 | return 1; | |
512 | } | |
513 | ||
514 | static inline int trace_rb_insert_last(struct per_dev_info *pdi,struct trace *t) | |
515 | { | |
23211fdf | 516 | if (!trace_rb_insert(t, &pdi->rb_last, 1)) { |
2a1b3424 JA |
517 | pdi->rb_last_entries++; |
518 | return 0; | |
519 | } | |
520 | ||
521 | return 1; | |
522 | } | |
523 | ||
524 | static struct trace *trace_rb_find(dev_t device, unsigned long sequence, | |
525 | struct rb_root *root, int order) | |
526 | { | |
527 | struct rb_node *n = root->rb_node; | |
528 | struct rb_node *prev = NULL; | |
e3556946 JA |
529 | struct trace *__t; |
530 | ||
2a1b3424 JA |
531 | while (n) { |
532 | __t = rb_entry(n, struct trace, rb_node); | |
533 | prev = n; | |
e3556946 | 534 | |
0583b6a2 | 535 | if (device < __t->bit->device) |
2a1b3424 | 536 | n = n->rb_left; |
0583b6a2 | 537 | else if (device > __t->bit->device) |
2a1b3424 | 538 | n = n->rb_right; |
0583b6a2 | 539 | else if (sequence < __t->bit->sequence) |
2a1b3424 | 540 | n = n->rb_left; |
e3556946 | 541 | else if (sequence > __t->bit->sequence) |
2a1b3424 | 542 | n = n->rb_right; |
e3556946 JA |
543 | else |
544 | return __t; | |
545 | } | |
546 | ||
2a1b3424 JA |
547 | /* |
548 | * hack - the list may not be sequence ordered because some | |
549 | * events don't have sequence and time matched. so we end up | |
550 | * being a little off in the rb lookup here, because we don't | |
551 | * know the time we are looking for. compensate by browsing | |
552 | * a little ahead from the last entry to find the match | |
553 | */ | |
554 | if (order && prev) { | |
555 | int max = 5; | |
556 | ||
557 | while (((n = rb_next(prev)) != NULL) && max--) { | |
558 | __t = rb_entry(n, struct trace, rb_node); | |
492da111 | 559 | |
2a1b3424 JA |
560 | if (__t->bit->device == device && |
561 | __t->bit->sequence == sequence) | |
562 | return __t; | |
563 | ||
564 | prev = n; | |
565 | } | |
566 | } | |
492da111 | 567 | |
e3556946 JA |
568 | return NULL; |
569 | } | |
570 | ||
2a1b3424 JA |
571 | static inline struct trace *trace_rb_find_sort(dev_t dev, unsigned long seq) |
572 | { | |
573 | return trace_rb_find(dev, seq, &rb_sort_root, 1); | |
574 | } | |
575 | ||
576 | static inline struct trace *trace_rb_find_last(struct per_dev_info *pdi, | |
577 | unsigned long seq) | |
578 | { | |
f7bd1a9b | 579 | return trace_rb_find(pdi->dev, seq, &pdi->rb_last, 0); |
2a1b3424 JA |
580 | } |
581 | ||
f7bd1a9b | 582 | static inline int track_rb_insert(struct per_dev_info *pdi,struct io_track *iot) |
7997c5b0 | 583 | { |
f7bd1a9b | 584 | struct rb_node **p = &pdi->rb_track.rb_node; |
7997c5b0 JA |
585 | struct rb_node *parent = NULL; |
586 | struct io_track *__iot; | |
587 | ||
588 | while (*p) { | |
589 | parent = *p; | |
7997c5b0 JA |
590 | __iot = rb_entry(parent, struct io_track, rb_node); |
591 | ||
f7bd1a9b | 592 | if (iot->sector < __iot->sector) |
7997c5b0 JA |
593 | p = &(*p)->rb_left; |
594 | else if (iot->sector > __iot->sector) | |
595 | p = &(*p)->rb_right; | |
596 | else { | |
e7c9f3ff | 597 | fprintf(stderr, |
ab197ca7 AB |
598 | "sector alias (%Lu) on device %d,%d!\n", |
599 | (unsigned long long) iot->sector, | |
f7bd1a9b | 600 | MAJOR(pdi->dev), MINOR(pdi->dev)); |
7997c5b0 JA |
601 | return 1; |
602 | } | |
603 | } | |
604 | ||
605 | rb_link_node(&iot->rb_node, parent, p); | |
f7bd1a9b | 606 | rb_insert_color(&iot->rb_node, &pdi->rb_track); |
7997c5b0 JA |
607 | return 0; |
608 | } | |
609 | ||
f7bd1a9b | 610 | static struct io_track *__find_track(struct per_dev_info *pdi, __u64 sector) |
7997c5b0 | 611 | { |
f7bd1a9b | 612 | struct rb_node *n = pdi->rb_track.rb_node; |
7997c5b0 JA |
613 | struct io_track *__iot; |
614 | ||
2a1b3424 JA |
615 | while (n) { |
616 | __iot = rb_entry(n, struct io_track, rb_node); | |
7997c5b0 | 617 | |
f7bd1a9b | 618 | if (sector < __iot->sector) |
2a1b3424 | 619 | n = n->rb_left; |
7997c5b0 | 620 | else if (sector > __iot->sector) |
2a1b3424 | 621 | n = n->rb_right; |
7997c5b0 JA |
622 | else |
623 | return __iot; | |
624 | } | |
625 | ||
626 | return NULL; | |
627 | } | |
628 | ||
f7bd1a9b JA |
629 | static struct io_track *find_track(struct per_dev_info *pdi, __u32 pid, |
630 | char *comm, __u64 sector) | |
7997c5b0 | 631 | { |
916b5501 | 632 | struct io_track *iot; |
7997c5b0 | 633 | |
f7bd1a9b | 634 | iot = __find_track(pdi, sector); |
7997c5b0 JA |
635 | if (!iot) { |
636 | iot = malloc(sizeof(*iot)); | |
50adc0ba | 637 | iot->pid = pid; |
bf0720af | 638 | memcpy(iot->comm, comm, sizeof(iot->comm)); |
7997c5b0 | 639 | iot->sector = sector; |
f7bd1a9b | 640 | track_rb_insert(pdi, iot); |
7997c5b0 JA |
641 | } |
642 | ||
643 | return iot; | |
644 | } | |
645 | ||
f7bd1a9b JA |
646 | static void log_track_frontmerge(struct per_dev_info *pdi, |
647 | struct blk_io_trace *t) | |
2e3e8ded JA |
648 | { |
649 | struct io_track *iot; | |
650 | ||
651 | if (!track_ios) | |
652 | return; | |
2e3e8ded | 653 | |
ae957cbc | 654 | iot = __find_track(pdi, t->sector + t_sec(t)); |
cb2a1a62 | 655 | if (!iot) { |
57ea8602 JA |
656 | if (verbose) |
657 | fprintf(stderr, "merge not found for (%d,%d): %llu\n", | |
658 | MAJOR(pdi->dev), MINOR(pdi->dev), | |
659 | (unsigned long long) t->sector + t_sec(t)); | |
cb2a1a62 | 660 | return; |
2e3e8ded | 661 | } |
cb2a1a62 | 662 | |
f7bd1a9b | 663 | rb_erase(&iot->rb_node, &pdi->rb_track); |
ae957cbc | 664 | iot->sector -= t_sec(t); |
f7bd1a9b | 665 | track_rb_insert(pdi, iot); |
2e3e8ded JA |
666 | } |
667 | ||
f7bd1a9b | 668 | static void log_track_getrq(struct per_dev_info *pdi, struct blk_io_trace *t) |
2e3e8ded JA |
669 | { |
670 | struct io_track *iot; | |
671 | ||
672 | if (!track_ios) | |
673 | return; | |
674 | ||
f7bd1a9b | 675 | iot = find_track(pdi, t->pid, t->comm, t->sector); |
95c15013 JA |
676 | iot->allocation_time = t->time; |
677 | } | |
678 | ||
95c15013 | 679 | /* |
b6076a9b | 680 | * return time between rq allocation and insertion |
95c15013 | 681 | */ |
f7bd1a9b JA |
682 | static unsigned long long log_track_insert(struct per_dev_info *pdi, |
683 | struct blk_io_trace *t) | |
95c15013 | 684 | { |
50adc0ba | 685 | unsigned long long elapsed; |
95c15013 JA |
686 | struct io_track *iot; |
687 | ||
688 | if (!track_ios) | |
689 | return -1; | |
690 | ||
f7bd1a9b | 691 | iot = find_track(pdi, t->pid, t->comm, t->sector); |
2e3e8ded | 692 | iot->queue_time = t->time; |
acd70d21 JA |
693 | |
694 | if (!iot->allocation_time) | |
695 | return -1; | |
696 | ||
50adc0ba JA |
697 | elapsed = iot->queue_time - iot->allocation_time; |
698 | ||
699 | if (per_process_stats) { | |
bf0720af | 700 | struct per_process_info *ppi = find_process(iot->pid,iot->comm); |
b9d40d6f | 701 | int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
50adc0ba | 702 | |
b9d40d6f JA |
703 | if (ppi && elapsed > ppi->longest_allocation_wait[w]) |
704 | ppi->longest_allocation_wait[w] = elapsed; | |
50adc0ba JA |
705 | } |
706 | ||
707 | return elapsed; | |
2e3e8ded JA |
708 | } |
709 | ||
710 | /* | |
711 | * return time between queue and issue | |
712 | */ | |
f7bd1a9b JA |
713 | static unsigned long long log_track_issue(struct per_dev_info *pdi, |
714 | struct blk_io_trace *t) | |
2e3e8ded | 715 | { |
50adc0ba | 716 | unsigned long long elapsed; |
2e3e8ded JA |
717 | struct io_track *iot; |
718 | ||
719 | if (!track_ios) | |
720 | return -1; | |
721 | if ((t->action & BLK_TC_ACT(BLK_TC_FS)) == 0) | |
722 | return -1; | |
723 | ||
f7bd1a9b | 724 | iot = __find_track(pdi, t->sector); |
cb2a1a62 | 725 | if (!iot) { |
57ea8602 JA |
726 | if (verbose) |
727 | fprintf(stderr, "issue not found for (%d,%d): %llu\n", | |
728 | MAJOR(pdi->dev), MINOR(pdi->dev), | |
729 | (unsigned long long) t->sector); | |
2e3e8ded | 730 | return -1; |
cb2a1a62 | 731 | } |
2e3e8ded JA |
732 | |
733 | iot->dispatch_time = t->time; | |
50adc0ba JA |
734 | elapsed = iot->dispatch_time - iot->queue_time; |
735 | ||
736 | if (per_process_stats) { | |
bf0720af | 737 | struct per_process_info *ppi = find_process(iot->pid,iot->comm); |
b9d40d6f | 738 | int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
50adc0ba | 739 | |
b9d40d6f JA |
740 | if (ppi && elapsed > ppi->longest_dispatch_wait[w]) |
741 | ppi->longest_dispatch_wait[w] = elapsed; | |
50adc0ba JA |
742 | } |
743 | ||
744 | return elapsed; | |
2e3e8ded JA |
745 | } |
746 | ||
747 | /* | |
748 | * return time between dispatch and complete | |
749 | */ | |
f7bd1a9b JA |
750 | static unsigned long long log_track_complete(struct per_dev_info *pdi, |
751 | struct blk_io_trace *t) | |
2e3e8ded JA |
752 | { |
753 | unsigned long long elapsed; | |
754 | struct io_track *iot; | |
755 | ||
756 | if (!track_ios) | |
757 | return -1; | |
758 | if ((t->action & BLK_TC_ACT(BLK_TC_FS)) == 0) | |
759 | return -1; | |
760 | ||
f7bd1a9b | 761 | iot = __find_track(pdi, t->sector); |
cb2a1a62 | 762 | if (!iot) { |
57ea8602 JA |
763 | if (verbose) |
764 | fprintf(stderr,"complete not found for (%d,%d): %llu\n", | |
765 | MAJOR(pdi->dev), MINOR(pdi->dev), | |
766 | (unsigned long long) t->sector); | |
2e3e8ded | 767 | return -1; |
cb2a1a62 | 768 | } |
2e3e8ded JA |
769 | |
770 | iot->completion_time = t->time; | |
771 | elapsed = iot->completion_time - iot->dispatch_time; | |
772 | ||
50adc0ba | 773 | if (per_process_stats) { |
bf0720af | 774 | struct per_process_info *ppi = find_process(iot->pid,iot->comm); |
b9d40d6f | 775 | int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
50adc0ba | 776 | |
b9d40d6f JA |
777 | if (ppi && elapsed > ppi->longest_completion_wait[w]) |
778 | ppi->longest_completion_wait[w] = elapsed; | |
50adc0ba JA |
779 | } |
780 | ||
2e3e8ded JA |
781 | /* |
782 | * kill the trace, we don't need it after completion | |
783 | */ | |
f7bd1a9b | 784 | rb_erase(&iot->rb_node, &pdi->rb_track); |
2e3e8ded JA |
785 | free(iot); |
786 | ||
787 | return elapsed; | |
788 | } | |
789 | ||
790 | ||
152f6476 JA |
791 | static struct io_stats *find_process_io_stats(__u32 pid, char *name) |
792 | { | |
bf0720af | 793 | struct per_process_info *ppi = find_process(pid, name); |
152f6476 JA |
794 | |
795 | if (!ppi) { | |
796 | ppi = malloc(sizeof(*ppi)); | |
797 | memset(ppi, 0, sizeof(*ppi)); | |
bf0720af | 798 | memcpy(ppi->name, name, 16); |
152f6476 JA |
799 | ppi->pid = pid; |
800 | add_process_to_hash(ppi); | |
801 | add_process_to_list(ppi); | |
802 | } | |
803 | ||
804 | return &ppi->io_stats; | |
805 | } | |
806 | ||
e7c9f3ff | 807 | static void resize_cpu_info(struct per_dev_info *pdi, int cpu) |
a718bd37 | 808 | { |
e7c9f3ff NS |
809 | struct per_cpu_info *cpus = pdi->cpus; |
810 | int ncpus = pdi->ncpus; | |
811 | int new_count = cpu + 1; | |
812 | int new_space, size; | |
cb7b061d | 813 | int i; |
a718bd37 NS |
814 | char *new_start; |
815 | ||
e7c9f3ff NS |
816 | size = new_count * sizeof(struct per_cpu_info); |
817 | cpus = realloc(cpus, size); | |
818 | if (!cpus) { | |
819 | char name[20]; | |
820 | fprintf(stderr, "Out of memory, CPU info for device %s (%d)\n", | |
821 | get_dev_name(pdi, name, sizeof(name)), size); | |
a718bd37 NS |
822 | exit(1); |
823 | } | |
824 | ||
e7c9f3ff NS |
825 | new_start = (char *)cpus + (ncpus * sizeof(struct per_cpu_info)); |
826 | new_space = (new_count - ncpus) * sizeof(struct per_cpu_info); | |
a718bd37 | 827 | memset(new_start, 0, new_space); |
e7c9f3ff NS |
828 | |
829 | pdi->ncpus = new_count; | |
830 | pdi->cpus = cpus; | |
cb7b061d JA |
831 | |
832 | for (i = cpu; i < new_count; i++) | |
833 | pdi->cpus[i].fd = -1; | |
e7c9f3ff | 834 | } |
cb2a1a62 | 835 | |
e7c9f3ff NS |
836 | static struct per_cpu_info *get_cpu_info(struct per_dev_info *pdi, int cpu) |
837 | { | |
cb2a1a62 JA |
838 | struct per_cpu_info *pci; |
839 | ||
e7c9f3ff NS |
840 | if (cpu >= pdi->ncpus) |
841 | resize_cpu_info(pdi, cpu); | |
cb2a1a62 JA |
842 | |
843 | pci = &pdi->cpus[cpu]; | |
844 | pci->cpu = cpu; | |
845 | return pci; | |
a718bd37 NS |
846 | } |
847 | ||
e7c9f3ff NS |
848 | |
849 | static int resize_devices(char *name) | |
a718bd37 | 850 | { |
e7c9f3ff | 851 | int size = (ndevices + 1) * sizeof(struct per_dev_info); |
c499bf38 | 852 | |
e7c9f3ff NS |
853 | devices = realloc(devices, size); |
854 | if (!devices) { | |
855 | fprintf(stderr, "Out of memory, device %s (%d)\n", name, size); | |
856 | return 1; | |
857 | } | |
858 | memset(&devices[ndevices], 0, sizeof(struct per_dev_info)); | |
859 | devices[ndevices].name = name; | |
860 | ndevices++; | |
861 | return 0; | |
862 | } | |
a718bd37 | 863 | |
f7bd1a9b | 864 | static struct per_dev_info *get_dev_info(dev_t dev) |
e7c9f3ff | 865 | { |
cb2a1a62 | 866 | struct per_dev_info *pdi; |
e7c9f3ff | 867 | int i; |
c499bf38 | 868 | |
7d747d22 | 869 | for (i = 0; i < ndevices; i++) { |
f7bd1a9b JA |
870 | if (!devices[i].dev) |
871 | devices[i].dev = dev; | |
872 | if (devices[i].dev == dev) | |
e7c9f3ff | 873 | return &devices[i]; |
7d747d22 | 874 | } |
cb2a1a62 | 875 | |
2a1b3424 | 876 | if (resize_devices(NULL)) |
e7c9f3ff | 877 | return NULL; |
cb2a1a62 JA |
878 | |
879 | pdi = &devices[ndevices - 1]; | |
f7bd1a9b | 880 | pdi->dev = dev; |
20ed6177 | 881 | pdi->first_reported_time = 0; |
d6222db8 | 882 | pdi->last_sequence = -1; |
287fa3d6 | 883 | pdi->last_read_time = 0; |
2a1b3424 JA |
884 | memset(&pdi->rb_last, 0, sizeof(pdi->rb_last)); |
885 | pdi->rb_last_entries = 0; | |
492da111 AB |
886 | |
887 | pdi->skips_head = pdi->skips_tail = NULL; | |
888 | ||
cb2a1a62 | 889 | return pdi; |
a718bd37 NS |
890 | } |
891 | ||
e7c9f3ff NS |
892 | static char *get_dev_name(struct per_dev_info *pdi, char *buffer, int size) |
893 | { | |
894 | if (pdi->name) | |
895 | snprintf(buffer, size, "%s", pdi->name); | |
896 | else | |
f7bd1a9b | 897 | snprintf(buffer, size, "%d,%d",MAJOR(pdi->dev),MINOR(pdi->dev)); |
e7c9f3ff NS |
898 | return buffer; |
899 | } | |
900 | ||
e7c9f3ff | 901 | static void check_time(struct per_dev_info *pdi, struct blk_io_trace *bit) |
cfab07eb AB |
902 | { |
903 | unsigned long long this = bit->time; | |
e7c9f3ff | 904 | unsigned long long last = pdi->last_reported_time; |
cfab07eb | 905 | |
e7c9f3ff NS |
906 | pdi->backwards = (this < last) ? 'B' : ' '; |
907 | pdi->last_reported_time = this; | |
cfab07eb AB |
908 | } |
909 | ||
152f6476 JA |
910 | static inline void __account_m(struct io_stats *ios, struct blk_io_trace *t, |
911 | int rw) | |
d0ca268b JA |
912 | { |
913 | if (rw) { | |
152f6476 | 914 | ios->mwrites++; |
ae957cbc | 915 | ios->qwrite_kb += t_kb(t); |
d0ca268b | 916 | } else { |
152f6476 | 917 | ios->mreads++; |
ae957cbc | 918 | ios->qread_kb += t_kb(t); |
152f6476 JA |
919 | } |
920 | } | |
921 | ||
922 | static inline void account_m(struct blk_io_trace *t, struct per_cpu_info *pci, | |
923 | int rw) | |
924 | { | |
925 | __account_m(&pci->io_stats, t, rw); | |
926 | ||
927 | if (per_process_stats) { | |
928 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
929 | ||
930 | __account_m(ios, t, rw); | |
d0ca268b JA |
931 | } |
932 | } | |
933 | ||
b6076a9b JA |
934 | static inline void __account_queue(struct io_stats *ios, struct blk_io_trace *t, |
935 | int rw) | |
d0ca268b JA |
936 | { |
937 | if (rw) { | |
152f6476 | 938 | ios->qwrites++; |
ae957cbc | 939 | ios->qwrite_kb += t_kb(t); |
d0ca268b | 940 | } else { |
152f6476 | 941 | ios->qreads++; |
ae957cbc | 942 | ios->qread_kb += t_kb(t); |
152f6476 JA |
943 | } |
944 | } | |
945 | ||
b6076a9b JA |
946 | static inline void account_queue(struct blk_io_trace *t, |
947 | struct per_cpu_info *pci, int rw) | |
152f6476 | 948 | { |
b6076a9b | 949 | __account_queue(&pci->io_stats, t, rw); |
152f6476 JA |
950 | |
951 | if (per_process_stats) { | |
952 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
953 | ||
b6076a9b | 954 | __account_queue(ios, t, rw); |
d0ca268b JA |
955 | } |
956 | } | |
957 | ||
e21dc4dd | 958 | static inline void __account_c(struct io_stats *ios, int rw, int bytes) |
d0ca268b JA |
959 | { |
960 | if (rw) { | |
152f6476 JA |
961 | ios->cwrites++; |
962 | ios->cwrite_kb += bytes >> 10; | |
d0ca268b | 963 | } else { |
152f6476 JA |
964 | ios->creads++; |
965 | ios->cread_kb += bytes >> 10; | |
966 | } | |
967 | } | |
968 | ||
969 | static inline void account_c(struct blk_io_trace *t, struct per_cpu_info *pci, | |
970 | int rw, int bytes) | |
971 | { | |
972 | __account_c(&pci->io_stats, rw, bytes); | |
973 | ||
974 | if (per_process_stats) { | |
975 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
976 | ||
977 | __account_c(ios, rw, bytes); | |
d0ca268b JA |
978 | } |
979 | } | |
980 | ||
b6076a9b JA |
981 | static inline void __account_issue(struct io_stats *ios, int rw, |
982 | unsigned int bytes) | |
afd2d7ad | 983 | { |
984 | if (rw) { | |
152f6476 JA |
985 | ios->iwrites++; |
986 | ios->iwrite_kb += bytes >> 10; | |
afd2d7ad | 987 | } else { |
152f6476 JA |
988 | ios->ireads++; |
989 | ios->iread_kb += bytes >> 10; | |
afd2d7ad | 990 | } |
991 | } | |
992 | ||
b6076a9b JA |
993 | static inline void account_issue(struct blk_io_trace *t, |
994 | struct per_cpu_info *pci, int rw) | |
d0ca268b | 995 | { |
b6076a9b | 996 | __account_issue(&pci->io_stats, rw, t->bytes); |
152f6476 JA |
997 | |
998 | if (per_process_stats) { | |
999 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
d5396421 | 1000 | |
b6076a9b | 1001 | __account_issue(ios, rw, t->bytes); |
152f6476 JA |
1002 | } |
1003 | } | |
1004 | ||
06639b27 JA |
1005 | static inline void __account_unplug(struct io_stats *ios, int timer) |
1006 | { | |
1007 | if (timer) | |
1008 | ios->timer_unplugs++; | |
1009 | else | |
1010 | ios->io_unplugs++; | |
1011 | } | |
1012 | ||
1013 | static inline void account_unplug(struct blk_io_trace *t, | |
1014 | struct per_cpu_info *pci, int timer) | |
1015 | { | |
1016 | __account_unplug(&pci->io_stats, timer); | |
1017 | ||
1018 | if (per_process_stats) { | |
1019 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
1020 | ||
1021 | __account_unplug(ios, timer); | |
1022 | } | |
1023 | } | |
1024 | ||
4054070a JA |
1025 | static inline void __account_requeue(struct io_stats *ios, |
1026 | struct blk_io_trace *t, int rw) | |
1027 | { | |
1028 | if (rw) { | |
1029 | ios->wrqueue++; | |
1030 | ios->iwrite_kb -= t_kb(t); | |
1031 | } else { | |
1032 | ios->rrqueue++; | |
1033 | ios->iread_kb -= t_kb(t); | |
1034 | } | |
1035 | } | |
1036 | ||
1037 | static inline void account_requeue(struct blk_io_trace *t, | |
1038 | struct per_cpu_info *pci, int rw) | |
1039 | { | |
1040 | __account_requeue(&pci->io_stats, t, rw); | |
1041 | ||
1042 | if (per_process_stats) { | |
1043 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
1044 | ||
1045 | __account_requeue(ios, t, rw); | |
1046 | } | |
1047 | } | |
1048 | ||
f7bd1a9b JA |
1049 | static void log_complete(struct per_dev_info *pdi, struct per_cpu_info *pci, |
1050 | struct blk_io_trace *t, char *act) | |
ab197ca7 | 1051 | { |
f7bd1a9b | 1052 | process_fmt(act, pci, t, log_track_complete(pdi, t), 0, NULL); |
ab197ca7 AB |
1053 | } |
1054 | ||
f7bd1a9b JA |
1055 | static void log_insert(struct per_dev_info *pdi, struct per_cpu_info *pci, |
1056 | struct blk_io_trace *t, char *act) | |
b6076a9b | 1057 | { |
f7bd1a9b | 1058 | process_fmt(act, pci, t, log_track_insert(pdi, t), 0, NULL); |
b6076a9b JA |
1059 | } |
1060 | ||
ab197ca7 AB |
1061 | static void log_queue(struct per_cpu_info *pci, struct blk_io_trace *t, |
1062 | char *act) | |
1063 | { | |
b6076a9b | 1064 | process_fmt(act, pci, t, -1, 0, NULL); |
ab197ca7 | 1065 | } |
2e3e8ded | 1066 | |
f7bd1a9b JA |
1067 | static void log_issue(struct per_dev_info *pdi, struct per_cpu_info *pci, |
1068 | struct blk_io_trace *t, char *act) | |
ab197ca7 | 1069 | { |
f7bd1a9b | 1070 | process_fmt(act, pci, t, log_track_issue(pdi, t), 0, NULL); |
d0ca268b JA |
1071 | } |
1072 | ||
f7bd1a9b JA |
1073 | static void log_merge(struct per_dev_info *pdi, struct per_cpu_info *pci, |
1074 | struct blk_io_trace *t, char *act) | |
d0ca268b | 1075 | { |
a01516de | 1076 | if (act[0] == 'F') |
f7bd1a9b | 1077 | log_track_frontmerge(pdi, t); |
2e3e8ded | 1078 | |
ab197ca7 | 1079 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
d0ca268b JA |
1080 | } |
1081 | ||
dfe34da1 | 1082 | static void log_action(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 1083 | char *act) |
dfe34da1 | 1084 | { |
ab197ca7 | 1085 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
dfe34da1 JA |
1086 | } |
1087 | ||
d5396421 | 1088 | static void log_generic(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 1089 | char *act) |
d0ca268b | 1090 | { |
ab197ca7 | 1091 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
d0ca268b JA |
1092 | } |
1093 | ||
ab197ca7 | 1094 | static void log_unplug(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 1095 | char *act) |
67e14fdc | 1096 | { |
ab197ca7 | 1097 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
67e14fdc JA |
1098 | } |
1099 | ||
93f1c611 JA |
1100 | static void log_split(struct per_cpu_info *pci, struct blk_io_trace *t, |
1101 | char *act) | |
1102 | { | |
1103 | process_fmt(act, pci, t, -1ULL, 0, NULL); | |
1104 | } | |
1105 | ||
ab197ca7 | 1106 | static void log_pc(struct per_cpu_info *pci, struct blk_io_trace *t, char *act) |
d0ca268b | 1107 | { |
ab197ca7 | 1108 | unsigned char *buf = (unsigned char *) t + sizeof(*t); |
d0ca268b | 1109 | |
ab197ca7 | 1110 | process_fmt(act, pci, t, -1ULL, t->pdu_len, buf); |
d0ca268b JA |
1111 | } |
1112 | ||
ff3a732c | 1113 | static void dump_trace_pc(struct blk_io_trace *t, struct per_cpu_info *pci) |
d0ca268b | 1114 | { |
56f2af81 JA |
1115 | int act = t->action & 0xffff; |
1116 | ||
1117 | switch (act) { | |
d0ca268b | 1118 | case __BLK_TA_QUEUE: |
3639a11e | 1119 | log_generic(pci, t, "Q"); |
d0ca268b JA |
1120 | break; |
1121 | case __BLK_TA_GETRQ: | |
3639a11e | 1122 | log_generic(pci, t, "G"); |
d0ca268b JA |
1123 | break; |
1124 | case __BLK_TA_SLEEPRQ: | |
3639a11e | 1125 | log_generic(pci, t, "S"); |
d0ca268b JA |
1126 | break; |
1127 | case __BLK_TA_REQUEUE: | |
3639a11e | 1128 | log_generic(pci, t, "R"); |
d0ca268b JA |
1129 | break; |
1130 | case __BLK_TA_ISSUE: | |
ab197ca7 | 1131 | log_pc(pci, t, "D"); |
d0ca268b JA |
1132 | break; |
1133 | case __BLK_TA_COMPLETE: | |
3639a11e | 1134 | log_pc(pci, t, "C"); |
d0ca268b | 1135 | break; |
56f2af81 JA |
1136 | case __BLK_TA_INSERT: |
1137 | log_pc(pci, t, "I"); | |
1138 | break; | |
d0ca268b | 1139 | default: |
56f2af81 | 1140 | fprintf(stderr, "Bad pc action %x\n", act); |
87b72777 | 1141 | break; |
d0ca268b | 1142 | } |
d0ca268b JA |
1143 | } |
1144 | ||
f7bd1a9b JA |
1145 | static void dump_trace_fs(struct blk_io_trace *t, struct per_dev_info *pdi, |
1146 | struct per_cpu_info *pci) | |
d0ca268b | 1147 | { |
649c7b66 | 1148 | int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
7997c5b0 | 1149 | int act = t->action & 0xffff; |
d0ca268b | 1150 | |
7997c5b0 | 1151 | switch (act) { |
d0ca268b | 1152 | case __BLK_TA_QUEUE: |
b6076a9b | 1153 | account_queue(t, pci, w); |
3639a11e | 1154 | log_queue(pci, t, "Q"); |
d0ca268b | 1155 | break; |
b6076a9b | 1156 | case __BLK_TA_INSERT: |
f7bd1a9b | 1157 | log_insert(pdi, pci, t, "I"); |
b6076a9b | 1158 | break; |
d0ca268b | 1159 | case __BLK_TA_BACKMERGE: |
152f6476 | 1160 | account_m(t, pci, w); |
f7bd1a9b | 1161 | log_merge(pdi, pci, t, "M"); |
d0ca268b JA |
1162 | break; |
1163 | case __BLK_TA_FRONTMERGE: | |
152f6476 | 1164 | account_m(t, pci, w); |
f7bd1a9b | 1165 | log_merge(pdi, pci, t, "F"); |
d0ca268b JA |
1166 | break; |
1167 | case __BLK_TA_GETRQ: | |
f7bd1a9b | 1168 | log_track_getrq(pdi, t); |
3639a11e | 1169 | log_generic(pci, t, "G"); |
d0ca268b JA |
1170 | break; |
1171 | case __BLK_TA_SLEEPRQ: | |
3639a11e | 1172 | log_generic(pci, t, "S"); |
d0ca268b JA |
1173 | break; |
1174 | case __BLK_TA_REQUEUE: | |
649c7b66 | 1175 | pdi->cur_depth[w]--; |
4054070a | 1176 | account_requeue(t, pci, w); |
3639a11e | 1177 | log_queue(pci, t, "R"); |
d0ca268b JA |
1178 | break; |
1179 | case __BLK_TA_ISSUE: | |
b6076a9b | 1180 | account_issue(t, pci, w); |
649c7b66 JA |
1181 | pdi->cur_depth[w]++; |
1182 | if (pdi->cur_depth[w] > pdi->max_depth[w]) | |
1183 | pdi->max_depth[w] = pdi->cur_depth[w]; | |
f7bd1a9b | 1184 | log_issue(pdi, pci, t, "D"); |
d0ca268b JA |
1185 | break; |
1186 | case __BLK_TA_COMPLETE: | |
649c7b66 | 1187 | pdi->cur_depth[w]--; |
152f6476 | 1188 | account_c(t, pci, w, t->bytes); |
f7bd1a9b | 1189 | log_complete(pdi, pci, t, "C"); |
d0ca268b | 1190 | break; |
88b1a526 | 1191 | case __BLK_TA_PLUG: |
3639a11e | 1192 | log_action(pci, t, "P"); |
88b1a526 | 1193 | break; |
3639a11e | 1194 | case __BLK_TA_UNPLUG_IO: |
06639b27 | 1195 | account_unplug(t, pci, 0); |
3639a11e JA |
1196 | log_unplug(pci, t, "U"); |
1197 | break; | |
1198 | case __BLK_TA_UNPLUG_TIMER: | |
06639b27 | 1199 | account_unplug(t, pci, 1); |
3639a11e | 1200 | log_unplug(pci, t, "UT"); |
88b1a526 | 1201 | break; |
93f1c611 JA |
1202 | case __BLK_TA_SPLIT: |
1203 | log_split(pci, t, "X"); | |
1204 | break; | |
1205 | case __BLK_TA_BOUNCE: | |
1206 | log_generic(pci, t, "B"); | |
1207 | break; | |
a8f30e64 JA |
1208 | case __BLK_TA_REMAP: |
1209 | log_generic(pci, t, "A"); | |
1210 | break; | |
d0ca268b JA |
1211 | default: |
1212 | fprintf(stderr, "Bad fs action %x\n", t->action); | |
1f79c4a0 | 1213 | break; |
d0ca268b | 1214 | } |
d0ca268b JA |
1215 | } |
1216 | ||
ff3a732c JA |
1217 | static void dump_trace(struct blk_io_trace *t, struct per_cpu_info *pci, |
1218 | struct per_dev_info *pdi) | |
d0ca268b JA |
1219 | { |
1220 | if (t->action & BLK_TC_ACT(BLK_TC_PC)) | |
ff3a732c | 1221 | dump_trace_pc(t, pci); |
d0ca268b | 1222 | else |
f7bd1a9b | 1223 | dump_trace_fs(t, pdi, pci); |
87b72777 | 1224 | |
20ed6177 JA |
1225 | if (!pdi->events) |
1226 | pdi->first_reported_time = t->time; | |
1227 | ||
e7c9f3ff | 1228 | pdi->events++; |
d0ca268b JA |
1229 | } |
1230 | ||
4c523165 JA |
1231 | /* |
1232 | * print in a proper way, not too small and not too big. if more than | |
1233 | * 1000,000K, turn into M and so on | |
1234 | */ | |
1235 | static char *size_cnv(char *dst, unsigned long long num, int in_kb) | |
1236 | { | |
da19e768 | 1237 | char suff[] = { '\0', 'K', 'M', 'G', 'P' }; |
0dc3602c | 1238 | unsigned int i = 0; |
4c523165 JA |
1239 | |
1240 | if (in_kb) | |
1241 | i++; | |
1242 | ||
0dc3602c | 1243 | while (num > 1000 * 1000ULL && (i < sizeof(suff) - 1)) { |
4c523165 JA |
1244 | i++; |
1245 | num /= 1000; | |
1246 | } | |
1247 | ||
1248 | sprintf(dst, "%'8Lu%c", num, suff[i]); | |
1249 | return dst; | |
1250 | } | |
1251 | ||
649c7b66 JA |
1252 | static void dump_io_stats(struct per_dev_info *pdi, struct io_stats *ios, |
1253 | char *msg) | |
5c017e4b | 1254 | { |
4c523165 JA |
1255 | static char x[256], y[256]; |
1256 | ||
152f6476 JA |
1257 | fprintf(ofp, "%s\n", msg); |
1258 | ||
4c523165 JA |
1259 | fprintf(ofp, " Reads Queued: %s, %siB\t", size_cnv(x, ios->qreads, 0), size_cnv(y, ios->qread_kb, 1)); |
1260 | fprintf(ofp, " Writes Queued: %s, %siB\n", size_cnv(x, ios->qwrites, 0), size_cnv(y, ios->qwrite_kb, 1)); | |
0a6b8fc4 | 1261 | |
4c523165 JA |
1262 | fprintf(ofp, " Read Dispatches: %s, %siB\t", size_cnv(x, ios->ireads, 0), size_cnv(y, ios->iread_kb, 1)); |
1263 | fprintf(ofp, " Write Dispatches: %s, %siB\n", size_cnv(x, ios->iwrites, 0), size_cnv(y, ios->iwrite_kb, 1)); | |
4054070a JA |
1264 | fprintf(ofp, " Reads Requeued: %s\t\t", size_cnv(x, ios->rrqueue, 0)); |
1265 | fprintf(ofp, " Writes Requeued: %s\n", size_cnv(x, ios->wrqueue, 0)); | |
4c523165 JA |
1266 | fprintf(ofp, " Reads Completed: %s, %siB\t", size_cnv(x, ios->creads, 0), size_cnv(y, ios->cread_kb, 1)); |
1267 | fprintf(ofp, " Writes Completed: %s, %siB\n", size_cnv(x, ios->cwrites, 0), size_cnv(y, ios->cwrite_kb, 1)); | |
152f6476 | 1268 | fprintf(ofp, " Read Merges: %'8lu%8c\t", ios->mreads, ' '); |
152f6476 | 1269 | fprintf(ofp, " Write Merges: %'8lu\n", ios->mwrites); |
649c7b66 JA |
1270 | if (pdi) { |
1271 | fprintf(ofp, " Read depth: %'8u%8c\t", pdi->max_depth[0], ' '); | |
1272 | fprintf(ofp, " Write depth: %'8u\n", pdi->max_depth[1]); | |
1273 | } | |
06639b27 JA |
1274 | fprintf(ofp, " IO unplugs: %'8lu%8c\t", ios->io_unplugs, ' '); |
1275 | fprintf(ofp, " Timer unplugs: %'8lu\n", ios->timer_unplugs); | |
5c017e4b JA |
1276 | } |
1277 | ||
50adc0ba JA |
1278 | static void dump_wait_stats(struct per_process_info *ppi) |
1279 | { | |
b9d40d6f JA |
1280 | unsigned long rawait = ppi->longest_allocation_wait[0] / 1000; |
1281 | unsigned long rdwait = ppi->longest_dispatch_wait[0] / 1000; | |
1282 | unsigned long rcwait = ppi->longest_completion_wait[0] / 1000; | |
1283 | unsigned long wawait = ppi->longest_allocation_wait[1] / 1000; | |
1284 | unsigned long wdwait = ppi->longest_dispatch_wait[1] / 1000; | |
1285 | unsigned long wcwait = ppi->longest_completion_wait[1] / 1000; | |
1286 | ||
1287 | fprintf(ofp, " Allocation wait: %'8lu%8c\t", rawait, ' '); | |
1288 | fprintf(ofp, " Allocation wait: %'8lu\n", wawait); | |
1289 | fprintf(ofp, " Dispatch wait: %'8lu%8c\t", rdwait, ' '); | |
1290 | fprintf(ofp, " Dispatch wait: %'8lu\n", wdwait); | |
1291 | fprintf(ofp, " Completion wait: %'8lu%8c\t", rcwait, ' '); | |
1292 | fprintf(ofp, " Completion wait: %'8lu\n", wcwait); | |
50adc0ba JA |
1293 | } |
1294 | ||
886ecf0e JA |
1295 | static int ppi_name_compare(const void *p1, const void *p2) |
1296 | { | |
1297 | struct per_process_info *ppi1 = *((struct per_process_info **) p1); | |
1298 | struct per_process_info *ppi2 = *((struct per_process_info **) p2); | |
1299 | int res; | |
1300 | ||
1301 | res = strverscmp(ppi1->name, ppi2->name); | |
1302 | if (!res) | |
06e6f286 | 1303 | res = ppi1->pid > ppi2->pid; |
886ecf0e JA |
1304 | |
1305 | return res; | |
1306 | } | |
1307 | ||
1308 | static void sort_process_list(void) | |
1309 | { | |
1310 | struct per_process_info **ppis; | |
1311 | struct per_process_info *ppi; | |
1312 | int i = 0; | |
1313 | ||
1314 | ppis = malloc(ppi_list_entries * sizeof(struct per_process_info *)); | |
1315 | ||
1316 | ppi = ppi_list; | |
1317 | while (ppi) { | |
06e6f286 | 1318 | ppis[i++] = ppi; |
886ecf0e JA |
1319 | ppi = ppi->list_next; |
1320 | } | |
1321 | ||
06e6f286 | 1322 | qsort(ppis, ppi_list_entries, sizeof(ppi), ppi_name_compare); |
886ecf0e JA |
1323 | |
1324 | i = ppi_list_entries - 1; | |
1325 | ppi_list = NULL; | |
1326 | while (i >= 0) { | |
1327 | ppi = ppis[i]; | |
1328 | ||
1329 | ppi->list_next = ppi_list; | |
1330 | ppi_list = ppi; | |
1331 | i--; | |
1332 | } | |
50c38702 JA |
1333 | |
1334 | free(ppis); | |
886ecf0e JA |
1335 | } |
1336 | ||
152f6476 JA |
1337 | static void show_process_stats(void) |
1338 | { | |
1339 | struct per_process_info *ppi; | |
1340 | ||
886ecf0e JA |
1341 | sort_process_list(); |
1342 | ||
152f6476 JA |
1343 | ppi = ppi_list; |
1344 | while (ppi) { | |
ce8b6b4f JA |
1345 | char name[64]; |
1346 | ||
715d8021 | 1347 | if (ppi->more_than_one) |
bf0720af | 1348 | sprintf(name, "%s (%u, ...)", ppi->name, ppi->pid); |
715d8021 JA |
1349 | else |
1350 | sprintf(name, "%s (%u)", ppi->name, ppi->pid); | |
bf0720af | 1351 | |
649c7b66 | 1352 | dump_io_stats(NULL, &ppi->io_stats, name); |
50adc0ba | 1353 | dump_wait_stats(ppi); |
152f6476 JA |
1354 | ppi = ppi->list_next; |
1355 | } | |
1356 | ||
1357 | fprintf(ofp, "\n"); | |
1358 | } | |
1359 | ||
e7c9f3ff | 1360 | static void show_device_and_cpu_stats(void) |
d0ca268b | 1361 | { |
e7c9f3ff NS |
1362 | struct per_dev_info *pdi; |
1363 | struct per_cpu_info *pci; | |
1364 | struct io_stats total, *ios; | |
20ed6177 | 1365 | unsigned long long rrate, wrate, msec; |
e7c9f3ff NS |
1366 | int i, j, pci_events; |
1367 | char line[3 + 8/*cpu*/ + 2 + 32/*dev*/ + 3]; | |
1368 | char name[32]; | |
1369 | ||
1370 | for (pdi = devices, i = 0; i < ndevices; i++, pdi++) { | |
1371 | ||
1372 | memset(&total, 0, sizeof(total)); | |
1373 | pci_events = 0; | |
1374 | ||
1375 | if (i > 0) | |
1376 | fprintf(ofp, "\n"); | |
1377 | ||
1378 | for (pci = pdi->cpus, j = 0; j < pdi->ncpus; j++, pci++) { | |
1379 | if (!pci->nelems) | |
1380 | continue; | |
1381 | ||
1382 | ios = &pci->io_stats; | |
1383 | total.qreads += ios->qreads; | |
1384 | total.qwrites += ios->qwrites; | |
1385 | total.creads += ios->creads; | |
1386 | total.cwrites += ios->cwrites; | |
1387 | total.mreads += ios->mreads; | |
1388 | total.mwrites += ios->mwrites; | |
1389 | total.ireads += ios->ireads; | |
1390 | total.iwrites += ios->iwrites; | |
4054070a JA |
1391 | total.rrqueue += ios->rrqueue; |
1392 | total.wrqueue += ios->wrqueue; | |
e7c9f3ff NS |
1393 | total.qread_kb += ios->qread_kb; |
1394 | total.qwrite_kb += ios->qwrite_kb; | |
1395 | total.cread_kb += ios->cread_kb; | |
1396 | total.cwrite_kb += ios->cwrite_kb; | |
1397 | total.iread_kb += ios->iread_kb; | |
1398 | total.iwrite_kb += ios->iwrite_kb; | |
06639b27 JA |
1399 | total.timer_unplugs += ios->timer_unplugs; |
1400 | total.io_unplugs += ios->io_unplugs; | |
e7c9f3ff NS |
1401 | |
1402 | snprintf(line, sizeof(line) - 1, "CPU%d (%s):", | |
1403 | j, get_dev_name(pdi, name, sizeof(name))); | |
649c7b66 | 1404 | dump_io_stats(pdi, ios, line); |
e7c9f3ff NS |
1405 | pci_events++; |
1406 | } | |
5c017e4b | 1407 | |
e7c9f3ff NS |
1408 | if (pci_events > 1) { |
1409 | fprintf(ofp, "\n"); | |
1410 | snprintf(line, sizeof(line) - 1, "Total (%s):", | |
1411 | get_dev_name(pdi, name, sizeof(name))); | |
649c7b66 | 1412 | dump_io_stats(NULL, &total, line); |
e7c9f3ff | 1413 | } |
d0ca268b | 1414 | |
20ed6177 | 1415 | wrate = rrate = 0; |
20ed6177 JA |
1416 | msec = (pdi->last_reported_time - pdi->first_reported_time) / 1000000; |
1417 | if (msec) { | |
1418 | rrate = 1000 * total.cread_kb / msec; | |
1419 | wrate = 1000 * total.cwrite_kb / msec; | |
1420 | } | |
1421 | ||
dce0f678 AB |
1422 | fprintf(ofp, "\nThroughput (R/W): %'LuKiB/s / %'LuKiB/s\n", |
1423 | rrate, wrate); | |
1424 | fprintf(ofp, "Events (%s): %'Lu entries\n", | |
1425 | get_dev_name(pdi, line, sizeof(line)), pdi->events); | |
492da111 AB |
1426 | |
1427 | collect_pdi_skips(pdi); | |
1428 | fprintf(ofp, "Skips: %'lu forward (%'llu - %5.1lf%%)\n", | |
dce0f678 AB |
1429 | pdi->skips,pdi->seq_skips, |
1430 | 100.0 * ((double)pdi->seq_skips / | |
dce0f678 | 1431 | (double)(pdi->events + pdi->seq_skips))); |
e7c9f3ff | 1432 | } |
d0ca268b JA |
1433 | } |
1434 | ||
d36421e4 JA |
1435 | /* |
1436 | * struct trace and blktrace allocation cache, we do potentially | |
1437 | * millions of mallocs for these structures while only using at most | |
1438 | * a few thousand at the time | |
1439 | */ | |
1440 | static inline void t_free(struct trace *t) | |
1441 | { | |
3c8413cb | 1442 | if (t_alloc_cache < 1024) { |
1d24fc14 JA |
1443 | t->next = t_alloc_list; |
1444 | t_alloc_list = t; | |
3c8413cb JA |
1445 | t_alloc_cache++; |
1446 | } else | |
1447 | free(t); | |
d36421e4 JA |
1448 | } |
1449 | ||
1450 | static inline struct trace *t_alloc(void) | |
1451 | { | |
1452 | struct trace *t = t_alloc_list; | |
1453 | ||
1454 | if (t) { | |
1455 | t_alloc_list = t->next; | |
3c8413cb | 1456 | t_alloc_cache--; |
d36421e4 JA |
1457 | return t; |
1458 | } | |
1459 | ||
1460 | return malloc(sizeof(*t)); | |
1461 | } | |
1462 | ||
1463 | static inline void bit_free(struct blk_io_trace *bit) | |
1464 | { | |
eb9bd4e9 | 1465 | if (bit_alloc_cache < 1024 && !bit->pdu_len) { |
1d24fc14 JA |
1466 | /* |
1467 | * abuse a 64-bit field for a next pointer for the free item | |
1468 | */ | |
1469 | bit->time = (__u64) (unsigned long) bit_alloc_list; | |
1470 | bit_alloc_list = (struct blk_io_trace *) bit; | |
3c8413cb JA |
1471 | bit_alloc_cache++; |
1472 | } else | |
1473 | free(bit); | |
d36421e4 JA |
1474 | } |
1475 | ||
1476 | static inline struct blk_io_trace *bit_alloc(void) | |
1477 | { | |
1478 | struct blk_io_trace *bit = bit_alloc_list; | |
1479 | ||
1480 | if (bit) { | |
0c39425c NS |
1481 | bit_alloc_list = (struct blk_io_trace *) (unsigned long) \ |
1482 | bit->time; | |
3c8413cb | 1483 | bit_alloc_cache--; |
d36421e4 JA |
1484 | return bit; |
1485 | } | |
1486 | ||
1487 | return malloc(sizeof(*bit)); | |
1488 | } | |
1489 | ||
4f0ae44f JA |
1490 | static void find_genesis(void) |
1491 | { | |
1492 | struct trace *t = trace_list; | |
1493 | ||
1494 | genesis_time = -1ULL; | |
1495 | while (t != NULL) { | |
1496 | if (t->bit->time < genesis_time) | |
1497 | genesis_time = t->bit->time; | |
1498 | ||
1499 | t = t->next; | |
1500 | } | |
1501 | } | |
1502 | ||
7f4d89e6 | 1503 | static inline int check_stopwatch(struct blk_io_trace *bit) |
4f0ae44f | 1504 | { |
7f4d89e6 JA |
1505 | if (bit->time < stopwatch_end && |
1506 | bit->time >= stopwatch_start) | |
4f0ae44f JA |
1507 | return 0; |
1508 | ||
1509 | return 1; | |
1510 | } | |
1511 | ||
53c68c88 JA |
1512 | /* |
1513 | * return youngest entry read | |
1514 | */ | |
1515 | static int sort_entries(unsigned long long *youngest) | |
4f0ae44f JA |
1516 | { |
1517 | struct trace *t; | |
4f0ae44f JA |
1518 | |
1519 | if (!genesis_time) | |
1520 | find_genesis(); | |
1521 | ||
d6222db8 | 1522 | *youngest = 0; |
4f0ae44f JA |
1523 | while ((t = trace_list) != NULL) { |
1524 | struct blk_io_trace *bit = t->bit; | |
1525 | ||
1526 | trace_list = t->next; | |
1527 | ||
7f4d89e6 | 1528 | bit->time -= genesis_time; |
4f0ae44f | 1529 | |
d6222db8 JA |
1530 | if (bit->time < *youngest || !*youngest) |
1531 | *youngest = bit->time; | |
1532 | ||
774a1a10 JA |
1533 | if (bit->sequence < smallest_seq_read) |
1534 | smallest_seq_read = bit->sequence; | |
1535 | ||
7f4d89e6 | 1536 | if (check_stopwatch(bit)) { |
4f0ae44f JA |
1537 | bit_free(bit); |
1538 | t_free(t); | |
1539 | continue; | |
1540 | } | |
1541 | ||
2a1b3424 | 1542 | if (trace_rb_insert_sort(t)) |
53c68c88 | 1543 | return -1; |
4f0ae44f JA |
1544 | } |
1545 | ||
53c68c88 | 1546 | return 0; |
4f0ae44f JA |
1547 | } |
1548 | ||
1c24add6 JA |
1549 | static inline void __put_trace_last(struct per_dev_info *pdi, struct trace *t) |
1550 | { | |
1551 | rb_erase(&t->rb_node, &pdi->rb_last); | |
1552 | pdi->rb_last_entries--; | |
1553 | ||
1554 | bit_free(t->bit); | |
1555 | t_free(t); | |
1556 | } | |
1557 | ||
1558 | static void put_trace(struct per_dev_info *pdi, struct trace *t) | |
2a1b3424 JA |
1559 | { |
1560 | rb_erase(&t->rb_node, &rb_sort_root); | |
1561 | rb_sort_entries--; | |
1562 | ||
1563 | trace_rb_insert_last(pdi, t); | |
1564 | ||
1c24add6 | 1565 | if (pdi->rb_last_entries > rb_batch * pdi->nfiles) { |
2a1b3424 JA |
1566 | struct rb_node *n = rb_first(&pdi->rb_last); |
1567 | ||
1568 | t = rb_entry(n, struct trace, rb_node); | |
1c24add6 | 1569 | __put_trace_last(pdi, t); |
2a1b3424 JA |
1570 | } |
1571 | } | |
1572 | ||
824c2b39 JA |
1573 | /* |
1574 | * to continue, we must have traces from all online cpus in the tree | |
1575 | */ | |
1576 | static int check_cpu_map(struct per_dev_info *pdi) | |
1577 | { | |
1578 | unsigned long *cpu_map; | |
1579 | struct rb_node *n; | |
1580 | struct trace *__t; | |
1581 | unsigned int i; | |
1582 | int ret, cpu; | |
1583 | ||
1584 | /* | |
1585 | * create a map of the cpus we have traces for | |
1586 | */ | |
1587 | cpu_map = malloc(pdi->cpu_map_max / sizeof(long)); | |
1588 | n = rb_first(&rb_sort_root); | |
1589 | while (n) { | |
1590 | __t = rb_entry(n, struct trace, rb_node); | |
1591 | cpu = __t->bit->cpu; | |
1592 | ||
1593 | cpu_map[CPU_IDX(cpu)] |= (1UL << CPU_BIT(cpu)); | |
1594 | n = rb_next(n); | |
1595 | } | |
1596 | ||
1597 | /* | |
b1c8e614 JA |
1598 | * we can't continue if pdi->cpu_map has entries set that we don't |
1599 | * have in the sort rbtree. the opposite is not a problem, though | |
824c2b39 JA |
1600 | */ |
1601 | ret = 0; | |
1602 | for (i = 0; i < pdi->cpu_map_max / CPUS_PER_LONG; i++) { | |
1603 | if (pdi->cpu_map[i] & ~(cpu_map[i])) { | |
1604 | ret = 1; | |
1605 | break; | |
1606 | } | |
1607 | } | |
1608 | ||
1609 | free(cpu_map); | |
1610 | return ret; | |
1611 | } | |
1612 | ||
a141a7cd | 1613 | static int check_sequence(struct per_dev_info *pdi, struct trace *t, int force) |
2a1b3424 JA |
1614 | { |
1615 | unsigned long expected_sequence = pdi->last_sequence + 1; | |
1ca323a5 JA |
1616 | struct blk_io_trace *bit = t->bit; |
1617 | struct trace *__t; | |
492da111 | 1618 | |
774a1a10 | 1619 | if (!expected_sequence) { |
774a1a10 JA |
1620 | /* |
1621 | * 1 should be the first entry, just allow it | |
1622 | */ | |
1623 | if (bit->sequence == 1) | |
1624 | return 0; | |
1625 | ||
824c2b39 | 1626 | return check_cpu_map(pdi); |
774a1a10 | 1627 | } |
2a1b3424 JA |
1628 | |
1629 | if (bit->sequence == expected_sequence) | |
1630 | return 0; | |
1631 | ||
2a1b3424 | 1632 | /* |
1c7c54aa JA |
1633 | * we may not have seen that sequence yet. if we are not doing |
1634 | * the final run, break and wait for more entries. | |
1c24add6 | 1635 | */ |
1c7c54aa | 1636 | if (expected_sequence < smallest_seq_read) { |
1ca323a5 JA |
1637 | __t = trace_rb_find_last(pdi, expected_sequence); |
1638 | if (!__t) | |
1c7c54aa | 1639 | goto skip; |
2a1b3424 | 1640 | |
1ca323a5 | 1641 | __put_trace_last(pdi, __t); |
2a1b3424 | 1642 | return 0; |
a141a7cd JA |
1643 | } else if (!force) { |
1644 | return 1; | |
0b07f23e | 1645 | } else { |
1c7c54aa | 1646 | skip: |
492da111 AB |
1647 | if (check_current_skips(pdi,bit->sequence)) |
1648 | return 0; | |
1649 | ||
1650 | insert_skip(pdi,expected_sequence,bit->sequence-1); | |
1c7c54aa JA |
1651 | return 0; |
1652 | } | |
2a1b3424 JA |
1653 | } |
1654 | ||
a649216c | 1655 | static void show_entries_rb(int force) |
8fc0abbc | 1656 | { |
1f7afa72 JA |
1657 | struct per_dev_info *pdi = NULL; |
1658 | struct per_cpu_info *pci = NULL; | |
8fc0abbc | 1659 | struct blk_io_trace *bit; |
3aabcd89 | 1660 | struct rb_node *n; |
8fc0abbc | 1661 | struct trace *t; |
1f7afa72 | 1662 | |
7d747d22 | 1663 | while ((n = rb_first(&rb_sort_root)) != NULL) { |
dd90748f | 1664 | if (is_done() && !force && !pipeline) |
1f7afa72 | 1665 | break; |
8fc0abbc JA |
1666 | |
1667 | t = rb_entry(n, struct trace, rb_node); | |
1668 | bit = t->bit; | |
1669 | ||
f7bd1a9b | 1670 | if (!pdi || pdi->dev != bit->device) |
287fa3d6 | 1671 | pdi = get_dev_info(bit->device); |
1f7afa72 | 1672 | |
e7c9f3ff NS |
1673 | if (!pdi) { |
1674 | fprintf(stderr, "Unknown device ID? (%d,%d)\n", | |
1675 | MAJOR(bit->device), MINOR(bit->device)); | |
1676 | break; | |
1677 | } | |
1f7afa72 | 1678 | |
a141a7cd JA |
1679 | if (check_sequence(pdi, t, force)) |
1680 | break; | |
cb2a1a62 | 1681 | |
a141a7cd JA |
1682 | if (!force && bit->time > last_allowed_time) |
1683 | break; | |
8fc0abbc | 1684 | |
be925321 JA |
1685 | pdi->last_sequence = bit->sequence; |
1686 | ||
4f0ae44f | 1687 | check_time(pdi, bit); |
8fc0abbc | 1688 | |
4f0ae44f JA |
1689 | if (!pci || pci->cpu != bit->cpu) |
1690 | pci = get_cpu_info(pdi, bit->cpu); | |
287fa3d6 | 1691 | |
cbc927b6 JA |
1692 | pci->nelems++; |
1693 | ||
98f8386b AB |
1694 | if (bit->action & (act_mask << BLK_TC_SHIFT)) |
1695 | dump_trace(bit, pci, pdi); | |
87b72777 | 1696 | |
2a1b3424 | 1697 | put_trace(pdi, t); |
cb2a1a62 | 1698 | } |
8fc0abbc JA |
1699 | } |
1700 | ||
1f79c4a0 JA |
1701 | static int read_data(int fd, void *buffer, int bytes, int block) |
1702 | { | |
1703 | int ret, bytes_left, fl; | |
1704 | void *p; | |
1705 | ||
1706 | fl = fcntl(fd, F_GETFL); | |
1707 | ||
1708 | if (!block) | |
1709 | fcntl(fd, F_SETFL, fl | O_NONBLOCK); | |
1710 | else | |
1711 | fcntl(fd, F_SETFL, fl & ~O_NONBLOCK); | |
1712 | ||
1713 | bytes_left = bytes; | |
1714 | p = buffer; | |
1715 | while (bytes_left > 0) { | |
1716 | ret = read(fd, p, bytes_left); | |
1717 | if (!ret) | |
1718 | return 1; | |
1719 | else if (ret < 0) { | |
1720 | if (errno != EAGAIN) | |
1721 | perror("read"); | |
a649216c | 1722 | |
1f79c4a0 JA |
1723 | return -1; |
1724 | } else { | |
1725 | p += ret; | |
1726 | bytes_left -= ret; | |
1727 | } | |
1728 | } | |
1729 | ||
1730 | return 0; | |
1731 | } | |
1732 | ||
a649216c | 1733 | static int read_events(int fd, int always_block) |
cb2a1a62 | 1734 | { |
287fa3d6 | 1735 | struct per_dev_info *pdi = NULL; |
e820abd7 | 1736 | unsigned int events = 0; |
7d747d22 JA |
1737 | |
1738 | while (!is_done() && events < rb_batch) { | |
1739 | struct blk_io_trace *bit; | |
1740 | struct trace *t; | |
1741 | int pdu_len; | |
1742 | __u32 magic; | |
1743 | ||
d36421e4 | 1744 | bit = bit_alloc(); |
cb2a1a62 | 1745 | |
eb9bd4e9 JA |
1746 | if (read_data(fd, bit, sizeof(*bit), !events || always_block)) { |
1747 | bit_free(bit); | |
cb2a1a62 | 1748 | break; |
eb9bd4e9 | 1749 | } |
cb2a1a62 | 1750 | |
7d747d22 JA |
1751 | magic = be32_to_cpu(bit->magic); |
1752 | if ((magic & 0xffffff00) != BLK_IO_TRACE_MAGIC) { | |
1753 | fprintf(stderr, "Bad magic %x\n", magic); | |
1754 | break; | |
1755 | } | |
1756 | ||
1757 | pdu_len = be16_to_cpu(bit->pdu_len); | |
1758 | if (pdu_len) { | |
1759 | void *ptr = realloc(bit, sizeof(*bit) + pdu_len); | |
1760 | ||
eb9bd4e9 JA |
1761 | if (read_data(fd, ptr + sizeof(*bit), pdu_len, 1)) { |
1762 | bit_free(ptr); | |
7d747d22 | 1763 | break; |
eb9bd4e9 | 1764 | } |
7d747d22 JA |
1765 | |
1766 | bit = ptr; | |
1767 | } | |
1768 | ||
d6222db8 JA |
1769 | trace_to_cpu(bit); |
1770 | ||
1771 | if (verify_trace(bit)) { | |
1772 | bit_free(bit); | |
1773 | continue; | |
1774 | } | |
1775 | ||
d36421e4 | 1776 | t = t_alloc(); |
cb2a1a62 JA |
1777 | memset(t, 0, sizeof(*t)); |
1778 | t->bit = bit; | |
1779 | ||
7d747d22 JA |
1780 | t->next = trace_list; |
1781 | trace_list = t; | |
1f7afa72 | 1782 | |
f7bd1a9b | 1783 | if (!pdi || pdi->dev != bit->device) |
287fa3d6 JA |
1784 | pdi = get_dev_info(bit->device); |
1785 | ||
1786 | if (bit->time > pdi->last_read_time) | |
1787 | pdi->last_read_time = bit->time; | |
1788 | ||
7d747d22 | 1789 | events++; |
cb2a1a62 JA |
1790 | } |
1791 | ||
7d747d22 | 1792 | return events; |
cb2a1a62 JA |
1793 | } |
1794 | ||
d5396421 | 1795 | static int do_file(void) |
d0ca268b | 1796 | { |
7d747d22 | 1797 | struct per_cpu_info *pci; |
73877e12 NS |
1798 | struct per_dev_info *pdi; |
1799 | int i, j, events, events_added; | |
d0ca268b | 1800 | |
7d747d22 JA |
1801 | /* |
1802 | * first prepare all files for reading | |
1803 | */ | |
e8741a4a | 1804 | for (i = 0; i < ndevices; i++) { |
73877e12 NS |
1805 | pdi = &devices[i]; |
1806 | pdi->nfiles = 0; | |
d6222db8 | 1807 | pdi->last_sequence = -1; |
73877e12 | 1808 | |
74feaeb5 | 1809 | for (j = 0;; j++) { |
e7c9f3ff | 1810 | struct stat st; |
d1d7f15f | 1811 | int len = 0; |
6e0073ed | 1812 | char *p, *dname; |
87b72777 | 1813 | |
e7c9f3ff NS |
1814 | pci = get_cpu_info(pdi, j); |
1815 | pci->cpu = j; | |
7d747d22 | 1816 | pci->fd = -1; |
6e0073ed JA |
1817 | |
1818 | p = strdup(pdi->name); | |
1819 | dname = dirname(p); | |
1820 | if (strcmp(dname, ".")) { | |
1821 | input_dir = dname; | |
1822 | p = strdup(pdi->name); | |
1823 | strcpy(pdi->name, basename(p)); | |
1824 | } | |
1825 | free(p); | |
d0ca268b | 1826 | |
d1d7f15f JA |
1827 | if (input_dir) |
1828 | len = sprintf(pci->fname, "%s/", input_dir); | |
1829 | ||
1830 | snprintf(pci->fname + len, sizeof(pci->fname)-1-len, | |
7d747d22 | 1831 | "%s.blktrace.%d", pdi->name, pci->cpu); |
e7c9f3ff NS |
1832 | if (stat(pci->fname, &st) < 0) |
1833 | break; | |
74feaeb5 AB |
1834 | if (st.st_size) { |
1835 | pci->fd = open(pci->fname, O_RDONLY); | |
1836 | if (pci->fd < 0) { | |
1837 | perror(pci->fname); | |
1838 | continue; | |
1839 | } | |
e7c9f3ff NS |
1840 | } |
1841 | ||
7d747d22 | 1842 | printf("Input file %s added\n", pci->fname); |
73877e12 | 1843 | pdi->nfiles++; |
824c2b39 | 1844 | cpu_mark_online(pdi, pci->cpu); |
d0ca268b | 1845 | } |
d5396421 JA |
1846 | } |
1847 | ||
7d747d22 JA |
1848 | /* |
1849 | * now loop over the files reading in the data | |
1850 | */ | |
412819ce | 1851 | do { |
53c68c88 JA |
1852 | unsigned long long youngest; |
1853 | ||
7d747d22 | 1854 | events_added = 0; |
287fa3d6 | 1855 | last_allowed_time = -1ULL; |
1c7c54aa | 1856 | smallest_seq_read = -1U; |
d5396421 | 1857 | |
7d747d22 | 1858 | for (i = 0; i < ndevices; i++) { |
73877e12 NS |
1859 | pdi = &devices[i]; |
1860 | ||
1861 | for (j = 0; j < pdi->nfiles; j++) { | |
d5396421 | 1862 | |
73877e12 | 1863 | pci = get_cpu_info(pdi, j); |
d5396421 | 1864 | |
7d747d22 JA |
1865 | if (pci->fd == -1) |
1866 | continue; | |
51128a28 | 1867 | |
a649216c | 1868 | events = read_events(pci->fd, 1); |
7d747d22 | 1869 | if (!events) { |
824c2b39 | 1870 | cpu_mark_offline(pdi, pci->cpu); |
7d747d22 JA |
1871 | close(pci->fd); |
1872 | pci->fd = -1; | |
1873 | continue; | |
1874 | } | |
d5396421 | 1875 | |
287fa3d6 JA |
1876 | if (pdi->last_read_time < last_allowed_time) |
1877 | last_allowed_time = pdi->last_read_time; | |
d5396421 | 1878 | |
7d747d22 JA |
1879 | events_added += events; |
1880 | } | |
2ff323b0 | 1881 | } |
d5396421 | 1882 | |
53c68c88 JA |
1883 | if (sort_entries(&youngest)) |
1884 | break; | |
1885 | ||
1886 | if (youngest > stopwatch_end) | |
287fa3d6 JA |
1887 | break; |
1888 | ||
a649216c | 1889 | show_entries_rb(0); |
cb2a1a62 | 1890 | |
7d747d22 | 1891 | } while (events_added); |
d5396421 | 1892 | |
a649216c JA |
1893 | if (rb_sort_entries) |
1894 | show_entries_rb(1); | |
1895 | ||
7d747d22 | 1896 | return 0; |
412819ce | 1897 | } |
d5396421 | 1898 | |
412819ce JA |
1899 | static int do_stdin(void) |
1900 | { | |
53c68c88 | 1901 | unsigned long long youngest; |
763d936e | 1902 | int fd, events; |
d5396421 | 1903 | |
be925321 | 1904 | last_allowed_time = -1ULL; |
1f79c4a0 | 1905 | fd = dup(STDIN_FILENO); |
0b07f23e JA |
1906 | if (fd == -1) { |
1907 | perror("dup stdin"); | |
1908 | return -1; | |
1909 | } | |
d5396421 | 1910 | |
0b07f23e | 1911 | while ((events = read_events(fd, 0)) != 0) { |
412819ce | 1912 | |
0b07f23e JA |
1913 | smallest_seq_read = -1U; |
1914 | ||
53c68c88 JA |
1915 | if (sort_entries(&youngest)) |
1916 | break; | |
1917 | ||
1918 | if (youngest > stopwatch_end) | |
2ff323b0 JA |
1919 | break; |
1920 | ||
763d936e | 1921 | show_entries_rb(0); |
0b07f23e | 1922 | } |
d5396421 | 1923 | |
a649216c JA |
1924 | if (rb_sort_entries) |
1925 | show_entries_rb(1); | |
1926 | ||
d5396421 | 1927 | close(fd); |
d5396421 JA |
1928 | return 0; |
1929 | } | |
d0ca268b | 1930 | |
cbc927b6 | 1931 | static void show_stats(void) |
412819ce | 1932 | { |
cbc927b6 JA |
1933 | if (!ofp) |
1934 | return; | |
1935 | if (stats_printed) | |
1936 | return; | |
1937 | ||
1938 | stats_printed = 1; | |
1939 | ||
1940 | if (per_process_stats) | |
1941 | show_process_stats(); | |
1942 | ||
1943 | if (per_device_and_cpu_stats) | |
1944 | show_device_and_cpu_stats(); | |
1945 | ||
152f6476 | 1946 | fflush(ofp); |
412819ce JA |
1947 | } |
1948 | ||
e820abd7 | 1949 | static void handle_sigint(__attribute__((__unused__)) int sig) |
412819ce JA |
1950 | { |
1951 | done = 1; | |
cbc927b6 | 1952 | show_stats(); |
412819ce JA |
1953 | } |
1954 | ||
46e6968b NS |
1955 | /* |
1956 | * Extract start and duration times from a string, allowing | |
1957 | * us to specify a time interval of interest within a trace. | |
1958 | * Format: "duration" (start is zero) or "start:duration". | |
1959 | */ | |
1960 | static int find_stopwatch_interval(char *string) | |
1961 | { | |
1962 | double value; | |
1963 | char *sp; | |
1964 | ||
1965 | value = strtod(string, &sp); | |
1966 | if (sp == string) { | |
1967 | fprintf(stderr,"Invalid stopwatch timer: %s\n", string); | |
1968 | return 1; | |
1969 | } | |
1970 | if (*sp == ':') { | |
1971 | stopwatch_start = DOUBLE_TO_NANO_ULL(value); | |
1972 | string = sp + 1; | |
1973 | value = strtod(string, &sp); | |
1974 | if (sp == string || *sp != '\0') { | |
1975 | fprintf(stderr,"Invalid stopwatch duration time: %s\n", | |
1976 | string); | |
1977 | return 1; | |
1978 | } | |
1979 | } else if (*sp != '\0') { | |
1980 | fprintf(stderr,"Invalid stopwatch start timer: %s\n", string); | |
1981 | return 1; | |
1982 | } | |
1b928247 JA |
1983 | stopwatch_end = DOUBLE_TO_NANO_ULL(value); |
1984 | if (stopwatch_end <= stopwatch_start) { | |
1985 | fprintf(stderr, "Invalid stopwatch interval: %Lu -> %Lu\n", | |
1986 | stopwatch_start, stopwatch_end); | |
1987 | return 1; | |
1988 | } | |
1989 | ||
46e6968b NS |
1990 | return 0; |
1991 | } | |
1992 | ||
52724a0e JA |
1993 | static char usage_str[] = \ |
1994 | "[ -i <input name> ] [-o <output name> [ -s ] [ -t ] [ -q ]\n" \ | |
1995 | "[ -w start:stop ] [ -f output format ] [ -F format spec ] [ -v] \n\n" \ | |
1996 | "\t-i Input file containing trace data, or '-' for stdin\n" \ | |
d1d7f15f | 1997 | "\t-D Directory to prepend to input file names\n" \ |
52724a0e JA |
1998 | "\t-o Output file. If not given, output is stdout\n" \ |
1999 | "\t-b stdin read batching\n" \ | |
2000 | "\t-s Show per-program io statistics\n" \ | |
ac740d98 | 2001 | "\t-h Hash processes by name, not pid\n" \ |
52724a0e JA |
2002 | "\t-t Track individual ios. Will tell you the time a request took\n" \ |
2003 | "\t to get queued, to get dispatched, and to get completed\n" \ | |
2004 | "\t-q Quiet. Don't display any stats at the end of the trace\n" \ | |
2005 | "\t-w Only parse data between the given time interval in seconds.\n" \ | |
2006 | "\t If 'start' isn't given, blkparse defaults the start time to 0\n" \ | |
d915dee6 JA |
2007 | "\t-f Output format. Customize the output format. The format field\n" \ |
2008 | "\t identifies can be found in the documentation\n" \ | |
52724a0e | 2009 | "\t-F Format specification. Can be found in the documentation\n" \ |
57ea8602 JA |
2010 | "\t-v More verbose for marginal errors\n" \ |
2011 | "\t-V Print program version info\n\n"; | |
52724a0e | 2012 | |
1f79c4a0 JA |
2013 | static void usage(char *prog) |
2014 | { | |
52724a0e | 2015 | fprintf(stderr, "Usage: %s %s %s", prog, blkparse_version, usage_str); |
1f79c4a0 JA |
2016 | } |
2017 | ||
d5396421 JA |
2018 | int main(int argc, char *argv[]) |
2019 | { | |
152f6476 | 2020 | char *ofp_buffer; |
98f8386b | 2021 | int i, c, ret, mode; |
98f8386b | 2022 | int act_mask_tmp = 0; |
d5396421 JA |
2023 | |
2024 | while ((c = getopt_long(argc, argv, S_OPTS, l_opts, NULL)) != -1) { | |
2025 | switch (c) { | |
98f8386b AB |
2026 | case 'a': |
2027 | i = find_mask_map(optarg); | |
2028 | if (i < 0) { | |
2029 | fprintf(stderr,"Invalid action mask %s\n", | |
2030 | optarg); | |
2031 | return 1; | |
2032 | } | |
2033 | act_mask_tmp |= i; | |
2034 | break; | |
2035 | ||
2036 | case 'A': | |
2037 | if ((sscanf(optarg, "%x", &i) != 1) || | |
2038 | !valid_act_opt(i)) { | |
2039 | fprintf(stderr, | |
2040 | "Invalid set action mask %s/0x%x\n", | |
2041 | optarg, i); | |
2042 | return 1; | |
2043 | } | |
2044 | act_mask_tmp = i; | |
2045 | break; | |
d5396421 | 2046 | case 'i': |
e7c9f3ff NS |
2047 | if (!strcmp(optarg, "-") && !pipeline) |
2048 | pipeline = 1; | |
2049 | else if (resize_devices(optarg) != 0) | |
2050 | return 1; | |
d5396421 | 2051 | break; |
d1d7f15f JA |
2052 | case 'D': |
2053 | input_dir = optarg; | |
2054 | break; | |
d5396421 | 2055 | case 'o': |
66efebf8 | 2056 | output_name = optarg; |
d5396421 | 2057 | break; |
79f19470 JA |
2058 | case 'b': |
2059 | rb_batch = atoi(optarg); | |
2060 | if (rb_batch <= 0) | |
2061 | rb_batch = RB_BATCH_DEFAULT; | |
2062 | break; | |
152f6476 JA |
2063 | case 's': |
2064 | per_process_stats = 1; | |
2065 | break; | |
7997c5b0 JA |
2066 | case 't': |
2067 | track_ios = 1; | |
2068 | break; | |
1e1c60f1 NS |
2069 | case 'q': |
2070 | per_device_and_cpu_stats = 0; | |
2071 | break; | |
46e6968b NS |
2072 | case 'w': |
2073 | if (find_stopwatch_interval(optarg) != 0) | |
2074 | return 1; | |
2075 | break; | |
ab197ca7 AB |
2076 | case 'f': |
2077 | set_all_format_specs(optarg); | |
2078 | break; | |
2079 | case 'F': | |
2080 | if (add_format_spec(optarg) != 0) | |
2081 | return 1; | |
2082 | break; | |
d915dee6 | 2083 | case 'h': |
715d8021 | 2084 | ppi_hash_by_pid = 0; |
bf0720af | 2085 | break; |
52724a0e | 2086 | case 'v': |
57ea8602 JA |
2087 | verbose++; |
2088 | break; | |
2089 | case 'V': | |
52724a0e JA |
2090 | printf("%s version %s\n", argv[0], blkparse_version); |
2091 | return 0; | |
d5396421 | 2092 | default: |
1f79c4a0 | 2093 | usage(argv[0]); |
d5396421 JA |
2094 | return 1; |
2095 | } | |
d0ca268b JA |
2096 | } |
2097 | ||
e7c9f3ff NS |
2098 | while (optind < argc) { |
2099 | if (!strcmp(argv[optind], "-") && !pipeline) | |
2100 | pipeline = 1; | |
2101 | else if (resize_devices(argv[optind]) != 0) | |
2102 | return 1; | |
2103 | optind++; | |
2104 | } | |
2105 | ||
2106 | if (!pipeline && !ndevices) { | |
1f79c4a0 | 2107 | usage(argv[0]); |
d5396421 JA |
2108 | return 1; |
2109 | } | |
2110 | ||
98f8386b AB |
2111 | if (act_mask_tmp != 0) |
2112 | act_mask = act_mask_tmp; | |
2113 | ||
7997c5b0 | 2114 | memset(&rb_sort_root, 0, sizeof(rb_sort_root)); |
412819ce JA |
2115 | |
2116 | signal(SIGINT, handle_sigint); | |
2117 | signal(SIGHUP, handle_sigint); | |
2118 | signal(SIGTERM, handle_sigint); | |
d5396421 | 2119 | |
d69db225 JA |
2120 | setlocale(LC_NUMERIC, "en_US"); |
2121 | ||
a66877e6 | 2122 | if (!output_name) { |
152f6476 | 2123 | ofp = fdopen(STDOUT_FILENO, "w"); |
a66877e6 JA |
2124 | mode = _IOLBF; |
2125 | } else { | |
152f6476 JA |
2126 | char ofname[128]; |
2127 | ||
7a9690c0 | 2128 | snprintf(ofname, sizeof(ofname) - 1, "%s", output_name); |
152f6476 | 2129 | ofp = fopen(ofname, "w"); |
a66877e6 | 2130 | mode = _IOFBF; |
152f6476 JA |
2131 | } |
2132 | ||
2133 | if (!ofp) { | |
2134 | perror("fopen"); | |
2135 | return 1; | |
2136 | } | |
2137 | ||
2138 | ofp_buffer = malloc(4096); | |
a66877e6 | 2139 | if (setvbuf(ofp, ofp_buffer, mode, 4096)) { |
152f6476 JA |
2140 | perror("setvbuf"); |
2141 | return 1; | |
2142 | } | |
2143 | ||
e7c9f3ff | 2144 | if (pipeline) |
d5396421 JA |
2145 | ret = do_stdin(); |
2146 | else | |
2147 | ret = do_file(); | |
2148 | ||
cbc927b6 | 2149 | show_stats(); |
eb9bd4e9 | 2150 | free(ofp_buffer); |
d5396421 | 2151 | return ret; |
d0ca268b | 2152 | } |