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; |
dce0f678 AB |
55 | unsigned long skips, nskips; |
56 | unsigned long long seq_skips, seq_nskips; | |
649c7b66 JA |
57 | unsigned int max_depth[2]; |
58 | unsigned int cur_depth[2]; | |
e7c9f3ff | 59 | |
f7bd1a9b JA |
60 | struct rb_root rb_track; |
61 | ||
73877e12 | 62 | int nfiles; |
e7c9f3ff | 63 | int ncpus; |
824c2b39 JA |
64 | |
65 | unsigned long *cpu_map; | |
66 | unsigned int cpu_map_max; | |
67 | ||
e7c9f3ff | 68 | struct per_cpu_info *cpus; |
492da111 AB |
69 | struct skip_info *skips_head; |
70 | struct skip_info *skips_tail; | |
e7c9f3ff NS |
71 | }; |
72 | ||
152f6476 JA |
73 | struct per_process_info { |
74 | char name[16]; | |
75 | __u32 pid; | |
76 | struct io_stats io_stats; | |
77 | struct per_process_info *hash_next, *list_next; | |
715d8021 | 78 | int more_than_one; |
50adc0ba JA |
79 | |
80 | /* | |
81 | * individual io stats | |
82 | */ | |
b9d40d6f JA |
83 | unsigned long long longest_allocation_wait[2]; |
84 | unsigned long long longest_dispatch_wait[2]; | |
85 | unsigned long long longest_completion_wait[2]; | |
d0ca268b JA |
86 | }; |
87 | ||
152f6476 | 88 | #define PPI_HASH_SHIFT (8) |
bf0720af JA |
89 | #define PPI_HASH_SIZE (1 << PPI_HASH_SHIFT) |
90 | #define PPI_HASH_MASK (PPI_HASH_SIZE - 1) | |
91 | static struct per_process_info *ppi_hash_table[PPI_HASH_SIZE]; | |
152f6476 | 92 | static struct per_process_info *ppi_list; |
886ecf0e | 93 | static int ppi_list_entries; |
152f6476 | 94 | |
d915dee6 | 95 | #define S_OPTS "a:A:i:o:b:stqw:f:F:vVhD:" |
d5396421 | 96 | static struct option l_opts[] = { |
98f8386b AB |
97 | { |
98 | .name = "act-mask", | |
99 | .has_arg = required_argument, | |
100 | .flag = NULL, | |
101 | .val = 'a' | |
102 | }, | |
103 | { | |
104 | .name = "set-mask", | |
105 | .has_arg = required_argument, | |
106 | .flag = NULL, | |
107 | .val = 'A' | |
108 | }, | |
d5396421 JA |
109 | { |
110 | .name = "input", | |
428683db | 111 | .has_arg = required_argument, |
d5396421 JA |
112 | .flag = NULL, |
113 | .val = 'i' | |
114 | }, | |
115 | { | |
116 | .name = "output", | |
428683db | 117 | .has_arg = required_argument, |
d5396421 JA |
118 | .flag = NULL, |
119 | .val = 'o' | |
120 | }, | |
79f19470 JA |
121 | { |
122 | .name = "batch", | |
428683db | 123 | .has_arg = required_argument, |
79f19470 JA |
124 | .flag = NULL, |
125 | .val = 'b' | |
126 | }, | |
152f6476 | 127 | { |
3f65c585 | 128 | .name = "per-program-stats", |
428683db | 129 | .has_arg = no_argument, |
152f6476 JA |
130 | .flag = NULL, |
131 | .val = 's' | |
132 | }, | |
7997c5b0 | 133 | { |
3f65c585 | 134 | .name = "track-ios", |
428683db | 135 | .has_arg = no_argument, |
7997c5b0 JA |
136 | .flag = NULL, |
137 | .val = 't' | |
138 | }, | |
1e1c60f1 NS |
139 | { |
140 | .name = "quiet", | |
428683db | 141 | .has_arg = no_argument, |
1e1c60f1 NS |
142 | .flag = NULL, |
143 | .val = 'q' | |
144 | }, | |
46e6968b NS |
145 | { |
146 | .name = "stopwatch", | |
428683db | 147 | .has_arg = required_argument, |
46e6968b NS |
148 | .flag = NULL, |
149 | .val = 'w' | |
150 | }, | |
ab197ca7 AB |
151 | { |
152 | .name = "format", | |
428683db | 153 | .has_arg = required_argument, |
ab197ca7 AB |
154 | .flag = NULL, |
155 | .val = 'f' | |
156 | }, | |
157 | { | |
158 | .name = "format-spec", | |
428683db | 159 | .has_arg = required_argument, |
ab197ca7 AB |
160 | .flag = NULL, |
161 | .val = 'F' | |
162 | }, | |
bf0720af | 163 | { |
3f65c585 | 164 | .name = "hash-by-name", |
bf0720af JA |
165 | .has_arg = no_argument, |
166 | .flag = NULL, | |
d915dee6 | 167 | .val = 'h' |
bf0720af | 168 | }, |
7d1c0411 | 169 | { |
57ea8602 | 170 | .name = "verbose", |
7d1c0411 JA |
171 | .has_arg = no_argument, |
172 | .flag = NULL, | |
57ea8602 | 173 | .val = 'v' |
7d1c0411 | 174 | }, |
52724a0e JA |
175 | { |
176 | .name = "version", | |
177 | .has_arg = no_argument, | |
178 | .flag = NULL, | |
57ea8602 | 179 | .val = 'V' |
52724a0e | 180 | }, |
d1d7f15f | 181 | { |
3f65c585 | 182 | .name = "input-directory", |
d1d7f15f JA |
183 | .has_arg = required_argument, |
184 | .flag = NULL, | |
185 | .val = 'D' | |
186 | }, | |
71ef8b7c JA |
187 | { |
188 | .name = NULL, | |
189 | } | |
d5396421 JA |
190 | }; |
191 | ||
7997c5b0 JA |
192 | /* |
193 | * for sorting the displayed output | |
194 | */ | |
8fc0abbc JA |
195 | struct trace { |
196 | struct blk_io_trace *bit; | |
197 | struct rb_node rb_node; | |
cb2a1a62 | 198 | struct trace *next; |
8fc0abbc JA |
199 | }; |
200 | ||
cb2a1a62 | 201 | static struct rb_root rb_sort_root; |
a649216c JA |
202 | static unsigned long rb_sort_entries; |
203 | ||
cb2a1a62 JA |
204 | static struct trace *trace_list; |
205 | ||
d36421e4 JA |
206 | /* |
207 | * allocation cache | |
208 | */ | |
209 | static struct blk_io_trace *bit_alloc_list; | |
210 | static struct trace *t_alloc_list; | |
211 | ||
7997c5b0 JA |
212 | /* |
213 | * for tracking individual ios | |
214 | */ | |
215 | struct io_track { | |
216 | struct rb_node rb_node; | |
217 | ||
218 | __u64 sector; | |
219 | __u32 pid; | |
bf0720af | 220 | char comm[16]; |
95c15013 | 221 | unsigned long long allocation_time; |
7997c5b0 JA |
222 | unsigned long long queue_time; |
223 | unsigned long long dispatch_time; | |
224 | unsigned long long completion_time; | |
225 | }; | |
226 | ||
e7c9f3ff NS |
227 | static int ndevices; |
228 | static struct per_dev_info *devices; | |
229 | static char *get_dev_name(struct per_dev_info *, char *, int); | |
210824c3 | 230 | static int trace_rb_insert_last(struct per_dev_info *, struct trace *); |
d0ca268b | 231 | |
71d5d4c9 | 232 | FILE *ofp = NULL; |
e7c9f3ff | 233 | static char *output_name; |
d1d7f15f | 234 | static char *input_dir; |
e7c9f3ff NS |
235 | |
236 | static unsigned long long genesis_time; | |
287fa3d6 | 237 | static unsigned long long last_allowed_time; |
46e6968b | 238 | static unsigned long long stopwatch_start; /* start from zero by default */ |
bc171579 | 239 | static unsigned long long stopwatch_end = -1ULL; /* "infinity" */ |
152f6476 JA |
240 | |
241 | static int per_process_stats; | |
cbc927b6 | 242 | static int per_device_and_cpu_stats = 1; |
7997c5b0 | 243 | static int track_ios; |
bf0720af | 244 | static int ppi_hash_by_pid = 1; |
57ea8602 | 245 | static int verbose; |
98f8386b | 246 | static unsigned int act_mask = -1U; |
cbc927b6 | 247 | static int stats_printed; |
d0ca268b | 248 | |
1d24fc14 JA |
249 | static unsigned int t_alloc_cache; |
250 | static unsigned int bit_alloc_cache; | |
251 | ||
7d747d22 | 252 | #define RB_BATCH_DEFAULT (512) |
e820abd7 | 253 | static unsigned int rb_batch = RB_BATCH_DEFAULT; |
79f19470 | 254 | |
e7c9f3ff NS |
255 | static int pipeline; |
256 | ||
412819ce JA |
257 | #define is_done() (*(volatile int *)(&done)) |
258 | static volatile int done; | |
259 | ||
bf0720af JA |
260 | #define JHASH_RANDOM (0x3af5f2ee) |
261 | ||
824c2b39 JA |
262 | #define CPUS_PER_LONG (8 * sizeof(unsigned long)) |
263 | #define CPU_IDX(cpu) ((cpu) / CPUS_PER_LONG) | |
264 | #define CPU_BIT(cpu) ((cpu) & (CPUS_PER_LONG - 1)) | |
265 | ||
210824c3 JA |
266 | static void resize_cpu_info(struct per_dev_info *pdi, int cpu) |
267 | { | |
268 | struct per_cpu_info *cpus = pdi->cpus; | |
269 | int ncpus = pdi->ncpus; | |
270 | int new_count = cpu + 1; | |
271 | int new_space, size; | |
272 | char *new_start; | |
273 | ||
274 | size = new_count * sizeof(struct per_cpu_info); | |
275 | cpus = realloc(cpus, size); | |
276 | if (!cpus) { | |
277 | char name[20]; | |
278 | fprintf(stderr, "Out of memory, CPU info for device %s (%d)\n", | |
279 | get_dev_name(pdi, name, sizeof(name)), size); | |
280 | exit(1); | |
281 | } | |
282 | ||
283 | new_start = (char *)cpus + (ncpus * sizeof(struct per_cpu_info)); | |
284 | new_space = (new_count - ncpus) * sizeof(struct per_cpu_info); | |
285 | memset(new_start, 0, new_space); | |
286 | ||
287 | pdi->ncpus = new_count; | |
288 | pdi->cpus = cpus; | |
289 | ||
290 | for (new_count = 0; new_count < pdi->ncpus; new_count++) { | |
291 | struct per_cpu_info *pci = &pdi->cpus[new_count]; | |
292 | ||
293 | if (!pci->fd) { | |
294 | pci->fd = -1; | |
295 | memset(&pci->rb_last, 0, sizeof(pci->rb_last)); | |
296 | pci->rb_last_entries = 0; | |
297 | pci->last_sequence = -1; | |
298 | } | |
299 | } | |
300 | } | |
301 | ||
302 | static struct per_cpu_info *get_cpu_info(struct per_dev_info *pdi, int cpu) | |
303 | { | |
304 | struct per_cpu_info *pci; | |
305 | ||
306 | if (cpu >= pdi->ncpus) | |
307 | resize_cpu_info(pdi, cpu); | |
308 | ||
309 | pci = &pdi->cpus[cpu]; | |
310 | pci->cpu = cpu; | |
311 | return pci; | |
312 | } | |
313 | ||
314 | ||
315 | static int resize_devices(char *name) | |
316 | { | |
317 | int size = (ndevices + 1) * sizeof(struct per_dev_info); | |
318 | ||
319 | devices = realloc(devices, size); | |
320 | if (!devices) { | |
321 | fprintf(stderr, "Out of memory, device %s (%d)\n", name, size); | |
322 | return 1; | |
323 | } | |
324 | memset(&devices[ndevices], 0, sizeof(struct per_dev_info)); | |
325 | devices[ndevices].name = name; | |
326 | ndevices++; | |
327 | return 0; | |
328 | } | |
329 | ||
330 | static struct per_dev_info *get_dev_info(dev_t dev) | |
331 | { | |
332 | struct per_dev_info *pdi; | |
333 | int i; | |
334 | ||
335 | for (i = 0; i < ndevices; i++) { | |
336 | if (!devices[i].dev) | |
337 | devices[i].dev = dev; | |
338 | if (devices[i].dev == dev) | |
339 | return &devices[i]; | |
340 | } | |
341 | ||
342 | if (resize_devices(NULL)) | |
343 | return NULL; | |
344 | ||
345 | pdi = &devices[ndevices - 1]; | |
346 | pdi->dev = dev; | |
347 | pdi->first_reported_time = 0; | |
348 | pdi->last_read_time = 0; | |
349 | pdi->skips_head = pdi->skips_tail = NULL; | |
350 | ||
351 | return pdi; | |
352 | } | |
353 | ||
492da111 AB |
354 | static void insert_skip(struct per_dev_info *pdi, unsigned long start, |
355 | unsigned long end) | |
356 | { | |
357 | struct skip_info *sip; | |
358 | ||
359 | for (sip = pdi->skips_tail; sip != NULL; sip = sip->prev) { | |
360 | if (end == (sip->start - 1)) { | |
361 | sip->start = start; | |
362 | return; | |
363 | } else if (start == (sip->end + 1)) { | |
364 | sip->end = end; | |
365 | return; | |
366 | } | |
367 | } | |
368 | ||
369 | sip = malloc(sizeof(struct skip_info)); | |
370 | sip->start = start; | |
371 | sip->end = end; | |
372 | sip->prev = sip->next = NULL; | |
373 | if (pdi->skips_tail == NULL) | |
374 | pdi->skips_head = pdi->skips_tail = sip; | |
375 | else { | |
376 | sip->prev = pdi->skips_tail; | |
377 | pdi->skips_tail->next = sip; | |
378 | pdi->skips_tail = sip; | |
379 | } | |
380 | } | |
381 | ||
382 | static void remove_sip(struct per_dev_info *pdi, struct skip_info *sip) | |
383 | { | |
384 | if (sip->prev == NULL) { | |
385 | if (sip->next == NULL) | |
386 | pdi->skips_head = pdi->skips_tail = NULL; | |
387 | else { | |
388 | pdi->skips_head = sip->next; | |
389 | sip->next->prev = NULL; | |
390 | } | |
391 | } else if (sip->next == NULL) { | |
392 | pdi->skips_tail = sip->prev; | |
393 | sip->prev->next = NULL; | |
394 | } else { | |
395 | sip->prev->next = sip->next; | |
396 | sip->next->prev = sip->prev; | |
397 | } | |
398 | ||
399 | sip->prev = sip->next = NULL; | |
400 | free(sip); | |
401 | } | |
402 | ||
403 | #define IN_SKIP(sip,seq) (((sip)->start <= (seq)) && ((seq) <= sip->end)) | |
404 | static int check_current_skips(struct per_dev_info *pdi, unsigned long seq) | |
405 | { | |
406 | struct skip_info *sip; | |
407 | ||
408 | for (sip = pdi->skips_tail; sip != NULL; sip = sip->prev) { | |
409 | if (IN_SKIP(sip,seq)) { | |
410 | if (sip->start == seq) { | |
411 | if (sip->end == seq) | |
412 | remove_sip(pdi,sip); | |
413 | else | |
414 | sip->start += 1; | |
415 | } else if (sip->end == seq) | |
416 | sip->end -= 1; | |
417 | else { | |
418 | sip->end = seq - 1; | |
419 | insert_skip(pdi,seq+1,sip->end); | |
420 | } | |
421 | return 1; | |
422 | } | |
423 | } | |
424 | return 0; | |
425 | } | |
426 | ||
427 | static void collect_pdi_skips(struct per_dev_info *pdi) | |
428 | { | |
429 | struct skip_info *sip; | |
430 | ||
431 | pdi->skips = 0; | |
432 | pdi->seq_skips = 0; | |
f4f763ca | 433 | for (sip = pdi->skips_head; sip != NULL; sip = sip->next) { |
492da111 AB |
434 | pdi->skips += 1; |
435 | pdi->seq_skips += (sip->end - sip->start + 1); | |
436 | if (verbose) | |
437 | fprintf(stderr, "(%d,%d): skipping %lu -> %lu\n", | |
438 | MAJOR(pdi->dev), MINOR(pdi->dev), | |
439 | sip->start, sip->end); | |
440 | } | |
441 | } | |
442 | ||
824c2b39 JA |
443 | static void cpu_mark_online(struct per_dev_info *pdi, unsigned int cpu) |
444 | { | |
445 | if (cpu >= pdi->cpu_map_max || !pdi->cpu_map) { | |
446 | int new_max = (cpu + CPUS_PER_LONG) & ~(CPUS_PER_LONG - 1); | |
447 | unsigned long *map = malloc(new_max / sizeof(long)); | |
448 | ||
449 | memset(map, 0, new_max / sizeof(long)); | |
450 | ||
451 | if (pdi->cpu_map) { | |
452 | memcpy(map, pdi->cpu_map, pdi->cpu_map_max / sizeof(long)); | |
453 | free(pdi->cpu_map); | |
454 | } | |
455 | ||
456 | pdi->cpu_map = map; | |
457 | pdi->cpu_map_max = new_max; | |
458 | } | |
459 | ||
460 | pdi->cpu_map[CPU_IDX(cpu)] |= (1UL << CPU_BIT(cpu)); | |
461 | } | |
462 | ||
463 | static inline void cpu_mark_offline(struct per_dev_info *pdi, int cpu) | |
464 | { | |
465 | pdi->cpu_map[CPU_IDX(cpu)] &= ~(1UL << CPU_BIT(cpu)); | |
466 | } | |
467 | ||
468 | static inline int cpu_is_online(struct per_dev_info *pdi, int cpu) | |
469 | { | |
470 | return (pdi->cpu_map[CPU_IDX(cpu)] & (1UL << CPU_BIT(cpu))) != 0; | |
471 | } | |
472 | ||
bf0720af JA |
473 | static inline int ppi_hash_pid(__u32 pid) |
474 | { | |
475 | return jhash_1word(pid, JHASH_RANDOM) & PPI_HASH_MASK; | |
476 | } | |
477 | ||
478 | static inline int ppi_hash_name(const char *name) | |
152f6476 | 479 | { |
bf0720af JA |
480 | return jhash(name, 16, JHASH_RANDOM) & PPI_HASH_MASK; |
481 | } | |
482 | ||
483 | static inline int ppi_hash(struct per_process_info *ppi) | |
484 | { | |
485 | if (ppi_hash_by_pid) | |
486 | return ppi_hash_pid(ppi->pid); | |
487 | ||
bf0720af | 488 | return ppi_hash_name(ppi->name); |
152f6476 JA |
489 | } |
490 | ||
491 | static inline void add_process_to_hash(struct per_process_info *ppi) | |
492 | { | |
bf0720af | 493 | const int hash_idx = ppi_hash(ppi); |
152f6476 | 494 | |
bf0720af JA |
495 | ppi->hash_next = ppi_hash_table[hash_idx]; |
496 | ppi_hash_table[hash_idx] = ppi; | |
152f6476 JA |
497 | } |
498 | ||
499 | static inline void add_process_to_list(struct per_process_info *ppi) | |
500 | { | |
501 | ppi->list_next = ppi_list; | |
502 | ppi_list = ppi; | |
886ecf0e | 503 | ppi_list_entries++; |
152f6476 JA |
504 | } |
505 | ||
bf0720af JA |
506 | static struct per_process_info *find_process_by_name(char *name) |
507 | { | |
508 | const int hash_idx = ppi_hash_name(name); | |
509 | struct per_process_info *ppi; | |
510 | ||
511 | ppi = ppi_hash_table[hash_idx]; | |
512 | while (ppi) { | |
513 | if (!strcmp(ppi->name, name)) | |
514 | return ppi; | |
515 | ||
516 | ppi = ppi->hash_next; | |
517 | } | |
518 | ||
519 | return NULL; | |
520 | } | |
521 | ||
152f6476 JA |
522 | static struct per_process_info *find_process_by_pid(__u32 pid) |
523 | { | |
bf0720af | 524 | const int hash_idx = ppi_hash_pid(pid); |
152f6476 JA |
525 | struct per_process_info *ppi; |
526 | ||
bf0720af | 527 | ppi = ppi_hash_table[hash_idx]; |
152f6476 JA |
528 | while (ppi) { |
529 | if (ppi->pid == pid) | |
530 | return ppi; | |
531 | ||
532 | ppi = ppi->hash_next; | |
533 | } | |
534 | ||
535 | return NULL; | |
536 | } | |
537 | ||
bf0720af JA |
538 | static struct per_process_info *find_process(__u32 pid, char *name) |
539 | { | |
715d8021 JA |
540 | struct per_process_info *ppi; |
541 | ||
bf0720af JA |
542 | if (ppi_hash_by_pid) |
543 | return find_process_by_pid(pid); | |
544 | ||
715d8021 JA |
545 | ppi = find_process_by_name(name); |
546 | if (ppi && ppi->pid != pid) | |
547 | ppi->more_than_one = 1; | |
548 | ||
549 | return ppi; | |
bf0720af JA |
550 | } |
551 | ||
210824c3 JA |
552 | /* |
553 | * struct trace and blktrace allocation cache, we do potentially | |
554 | * millions of mallocs for these structures while only using at most | |
555 | * a few thousand at the time | |
556 | */ | |
557 | static inline void t_free(struct trace *t) | |
558 | { | |
559 | if (t_alloc_cache < 1024) { | |
560 | t->next = t_alloc_list; | |
561 | t_alloc_list = t; | |
562 | t_alloc_cache++; | |
563 | } else | |
564 | free(t); | |
565 | } | |
566 | ||
567 | static inline struct trace *t_alloc(void) | |
568 | { | |
569 | struct trace *t = t_alloc_list; | |
570 | ||
571 | if (t) { | |
572 | t_alloc_list = t->next; | |
573 | t_alloc_cache--; | |
574 | return t; | |
575 | } | |
576 | ||
577 | return malloc(sizeof(*t)); | |
578 | } | |
579 | ||
580 | static inline void bit_free(struct blk_io_trace *bit) | |
581 | { | |
582 | if (bit_alloc_cache < 1024 && !bit->pdu_len) { | |
583 | /* | |
584 | * abuse a 64-bit field for a next pointer for the free item | |
585 | */ | |
586 | bit->time = (__u64) (unsigned long) bit_alloc_list; | |
587 | bit_alloc_list = (struct blk_io_trace *) bit; | |
588 | bit_alloc_cache++; | |
589 | } else | |
590 | free(bit); | |
591 | } | |
592 | ||
593 | static inline struct blk_io_trace *bit_alloc(void) | |
594 | { | |
595 | struct blk_io_trace *bit = bit_alloc_list; | |
596 | ||
597 | if (bit) { | |
598 | bit_alloc_list = (struct blk_io_trace *) (unsigned long) \ | |
599 | bit->time; | |
600 | bit_alloc_cache--; | |
601 | return bit; | |
602 | } | |
603 | ||
604 | return malloc(sizeof(*bit)); | |
605 | } | |
606 | ||
607 | static inline void __put_trace_last(struct per_dev_info *pdi, struct trace *t) | |
608 | { | |
609 | struct per_cpu_info *pci = get_cpu_info(pdi, t->bit->cpu); | |
610 | ||
611 | rb_erase(&t->rb_node, &pci->rb_last); | |
612 | pci->rb_last_entries--; | |
613 | ||
614 | bit_free(t->bit); | |
615 | t_free(t); | |
616 | } | |
617 | ||
618 | static void put_trace(struct per_dev_info *pdi, struct trace *t) | |
619 | { | |
620 | rb_erase(&t->rb_node, &rb_sort_root); | |
621 | rb_sort_entries--; | |
622 | ||
623 | trace_rb_insert_last(pdi, t); | |
624 | } | |
625 | ||
89482da6 | 626 | static inline int trace_rb_insert(struct trace *t, struct rb_root *root) |
7997c5b0 | 627 | { |
2a1b3424 | 628 | struct rb_node **p = &root->rb_node; |
7997c5b0 JA |
629 | struct rb_node *parent = NULL; |
630 | struct trace *__t; | |
631 | ||
632 | while (*p) { | |
633 | parent = *p; | |
2a1b3424 | 634 | |
7997c5b0 JA |
635 | __t = rb_entry(parent, struct trace, rb_node); |
636 | ||
89482da6 JA |
637 | if (t->bit->time < __t->bit->time) |
638 | p = &(*p)->rb_left; | |
639 | else if (t->bit->time > __t->bit->time) | |
640 | p = &(*p)->rb_right; | |
641 | else if (t->bit->device < __t->bit->device) | |
e7c9f3ff NS |
642 | p = &(*p)->rb_left; |
643 | else if (t->bit->device > __t->bit->device) | |
644 | p = &(*p)->rb_right; | |
dcf0f7ed JA |
645 | else if (t->bit->sequence < __t->bit->sequence) |
646 | p = &(*p)->rb_left; | |
0b07f23e | 647 | else /* >= sequence */ |
dcf0f7ed | 648 | p = &(*p)->rb_right; |
7997c5b0 JA |
649 | } |
650 | ||
651 | rb_link_node(&t->rb_node, parent, p); | |
2a1b3424 | 652 | rb_insert_color(&t->rb_node, root); |
7997c5b0 JA |
653 | return 0; |
654 | } | |
655 | ||
2a1b3424 | 656 | static inline int trace_rb_insert_sort(struct trace *t) |
e3556946 | 657 | { |
89482da6 | 658 | if (!trace_rb_insert(t, &rb_sort_root)) { |
2a1b3424 JA |
659 | rb_sort_entries++; |
660 | return 0; | |
661 | } | |
662 | ||
663 | return 1; | |
664 | } | |
665 | ||
210824c3 | 666 | static int trace_rb_insert_last(struct per_dev_info *pdi, struct trace *t) |
2a1b3424 | 667 | { |
210824c3 JA |
668 | struct per_cpu_info *pci = get_cpu_info(pdi, t->bit->cpu); |
669 | ||
670 | if (trace_rb_insert(t, &pci->rb_last)) | |
671 | return 1; | |
672 | ||
673 | pci->rb_last_entries++; | |
674 | ||
675 | if (pci->rb_last_entries > rb_batch * pdi->nfiles) { | |
676 | struct rb_node *n = rb_first(&pci->rb_last); | |
677 | ||
678 | t = rb_entry(n, struct trace, rb_node); | |
679 | __put_trace_last(pdi, t); | |
2a1b3424 JA |
680 | } |
681 | ||
210824c3 | 682 | return 0; |
2a1b3424 JA |
683 | } |
684 | ||
685 | static struct trace *trace_rb_find(dev_t device, unsigned long sequence, | |
686 | struct rb_root *root, int order) | |
687 | { | |
688 | struct rb_node *n = root->rb_node; | |
689 | struct rb_node *prev = NULL; | |
e3556946 JA |
690 | struct trace *__t; |
691 | ||
2a1b3424 JA |
692 | while (n) { |
693 | __t = rb_entry(n, struct trace, rb_node); | |
694 | prev = n; | |
e3556946 | 695 | |
0583b6a2 | 696 | if (device < __t->bit->device) |
2a1b3424 | 697 | n = n->rb_left; |
0583b6a2 | 698 | else if (device > __t->bit->device) |
2a1b3424 | 699 | n = n->rb_right; |
0583b6a2 | 700 | else if (sequence < __t->bit->sequence) |
2a1b3424 | 701 | n = n->rb_left; |
e3556946 | 702 | else if (sequence > __t->bit->sequence) |
2a1b3424 | 703 | n = n->rb_right; |
e3556946 JA |
704 | else |
705 | return __t; | |
706 | } | |
707 | ||
2a1b3424 JA |
708 | /* |
709 | * hack - the list may not be sequence ordered because some | |
710 | * events don't have sequence and time matched. so we end up | |
711 | * being a little off in the rb lookup here, because we don't | |
712 | * know the time we are looking for. compensate by browsing | |
713 | * a little ahead from the last entry to find the match | |
714 | */ | |
715 | if (order && prev) { | |
716 | int max = 5; | |
717 | ||
718 | while (((n = rb_next(prev)) != NULL) && max--) { | |
719 | __t = rb_entry(n, struct trace, rb_node); | |
492da111 | 720 | |
2a1b3424 JA |
721 | if (__t->bit->device == device && |
722 | __t->bit->sequence == sequence) | |
723 | return __t; | |
724 | ||
725 | prev = n; | |
726 | } | |
727 | } | |
492da111 | 728 | |
e3556946 JA |
729 | return NULL; |
730 | } | |
731 | ||
2a1b3424 | 732 | static inline struct trace *trace_rb_find_last(struct per_dev_info *pdi, |
210824c3 | 733 | struct per_cpu_info *pci, |
2a1b3424 JA |
734 | unsigned long seq) |
735 | { | |
210824c3 | 736 | return trace_rb_find(pdi->dev, seq, &pci->rb_last, 0); |
2a1b3424 JA |
737 | } |
738 | ||
f7bd1a9b | 739 | static inline int track_rb_insert(struct per_dev_info *pdi,struct io_track *iot) |
7997c5b0 | 740 | { |
f7bd1a9b | 741 | struct rb_node **p = &pdi->rb_track.rb_node; |
7997c5b0 JA |
742 | struct rb_node *parent = NULL; |
743 | struct io_track *__iot; | |
744 | ||
745 | while (*p) { | |
746 | parent = *p; | |
7997c5b0 JA |
747 | __iot = rb_entry(parent, struct io_track, rb_node); |
748 | ||
f7bd1a9b | 749 | if (iot->sector < __iot->sector) |
7997c5b0 JA |
750 | p = &(*p)->rb_left; |
751 | else if (iot->sector > __iot->sector) | |
752 | p = &(*p)->rb_right; | |
753 | else { | |
e7c9f3ff | 754 | fprintf(stderr, |
ab197ca7 AB |
755 | "sector alias (%Lu) on device %d,%d!\n", |
756 | (unsigned long long) iot->sector, | |
f7bd1a9b | 757 | MAJOR(pdi->dev), MINOR(pdi->dev)); |
7997c5b0 JA |
758 | return 1; |
759 | } | |
760 | } | |
761 | ||
762 | rb_link_node(&iot->rb_node, parent, p); | |
f7bd1a9b | 763 | rb_insert_color(&iot->rb_node, &pdi->rb_track); |
7997c5b0 JA |
764 | return 0; |
765 | } | |
766 | ||
f7bd1a9b | 767 | static struct io_track *__find_track(struct per_dev_info *pdi, __u64 sector) |
7997c5b0 | 768 | { |
f7bd1a9b | 769 | struct rb_node *n = pdi->rb_track.rb_node; |
7997c5b0 JA |
770 | struct io_track *__iot; |
771 | ||
2a1b3424 JA |
772 | while (n) { |
773 | __iot = rb_entry(n, struct io_track, rb_node); | |
7997c5b0 | 774 | |
f7bd1a9b | 775 | if (sector < __iot->sector) |
2a1b3424 | 776 | n = n->rb_left; |
7997c5b0 | 777 | else if (sector > __iot->sector) |
2a1b3424 | 778 | n = n->rb_right; |
7997c5b0 JA |
779 | else |
780 | return __iot; | |
781 | } | |
782 | ||
783 | return NULL; | |
784 | } | |
785 | ||
f7bd1a9b JA |
786 | static struct io_track *find_track(struct per_dev_info *pdi, __u32 pid, |
787 | char *comm, __u64 sector) | |
7997c5b0 | 788 | { |
916b5501 | 789 | struct io_track *iot; |
7997c5b0 | 790 | |
f7bd1a9b | 791 | iot = __find_track(pdi, sector); |
7997c5b0 JA |
792 | if (!iot) { |
793 | iot = malloc(sizeof(*iot)); | |
50adc0ba | 794 | iot->pid = pid; |
bf0720af | 795 | memcpy(iot->comm, comm, sizeof(iot->comm)); |
7997c5b0 | 796 | iot->sector = sector; |
f7bd1a9b | 797 | track_rb_insert(pdi, iot); |
7997c5b0 JA |
798 | } |
799 | ||
800 | return iot; | |
801 | } | |
802 | ||
f7bd1a9b JA |
803 | static void log_track_frontmerge(struct per_dev_info *pdi, |
804 | struct blk_io_trace *t) | |
2e3e8ded JA |
805 | { |
806 | struct io_track *iot; | |
807 | ||
808 | if (!track_ios) | |
809 | return; | |
2e3e8ded | 810 | |
ae957cbc | 811 | iot = __find_track(pdi, t->sector + t_sec(t)); |
cb2a1a62 | 812 | if (!iot) { |
57ea8602 JA |
813 | if (verbose) |
814 | fprintf(stderr, "merge not found for (%d,%d): %llu\n", | |
815 | MAJOR(pdi->dev), MINOR(pdi->dev), | |
816 | (unsigned long long) t->sector + t_sec(t)); | |
cb2a1a62 | 817 | return; |
2e3e8ded | 818 | } |
cb2a1a62 | 819 | |
f7bd1a9b | 820 | rb_erase(&iot->rb_node, &pdi->rb_track); |
ae957cbc | 821 | iot->sector -= t_sec(t); |
f7bd1a9b | 822 | track_rb_insert(pdi, iot); |
2e3e8ded JA |
823 | } |
824 | ||
f7bd1a9b | 825 | static void log_track_getrq(struct per_dev_info *pdi, struct blk_io_trace *t) |
2e3e8ded JA |
826 | { |
827 | struct io_track *iot; | |
828 | ||
829 | if (!track_ios) | |
830 | return; | |
831 | ||
f7bd1a9b | 832 | iot = find_track(pdi, t->pid, t->comm, t->sector); |
95c15013 JA |
833 | iot->allocation_time = t->time; |
834 | } | |
835 | ||
95c15013 | 836 | /* |
b6076a9b | 837 | * return time between rq allocation and insertion |
95c15013 | 838 | */ |
f7bd1a9b JA |
839 | static unsigned long long log_track_insert(struct per_dev_info *pdi, |
840 | struct blk_io_trace *t) | |
95c15013 | 841 | { |
50adc0ba | 842 | unsigned long long elapsed; |
95c15013 JA |
843 | struct io_track *iot; |
844 | ||
845 | if (!track_ios) | |
846 | return -1; | |
847 | ||
f7bd1a9b | 848 | iot = find_track(pdi, t->pid, t->comm, t->sector); |
2e3e8ded | 849 | iot->queue_time = t->time; |
acd70d21 JA |
850 | |
851 | if (!iot->allocation_time) | |
852 | return -1; | |
853 | ||
50adc0ba JA |
854 | elapsed = iot->queue_time - iot->allocation_time; |
855 | ||
856 | if (per_process_stats) { | |
bf0720af | 857 | struct per_process_info *ppi = find_process(iot->pid,iot->comm); |
b9d40d6f | 858 | int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
50adc0ba | 859 | |
b9d40d6f JA |
860 | if (ppi && elapsed > ppi->longest_allocation_wait[w]) |
861 | ppi->longest_allocation_wait[w] = elapsed; | |
50adc0ba JA |
862 | } |
863 | ||
864 | return elapsed; | |
2e3e8ded JA |
865 | } |
866 | ||
867 | /* | |
868 | * return time between queue and issue | |
869 | */ | |
f7bd1a9b JA |
870 | static unsigned long long log_track_issue(struct per_dev_info *pdi, |
871 | struct blk_io_trace *t) | |
2e3e8ded | 872 | { |
50adc0ba | 873 | unsigned long long elapsed; |
2e3e8ded JA |
874 | struct io_track *iot; |
875 | ||
876 | if (!track_ios) | |
877 | return -1; | |
878 | if ((t->action & BLK_TC_ACT(BLK_TC_FS)) == 0) | |
879 | return -1; | |
880 | ||
f7bd1a9b | 881 | iot = __find_track(pdi, t->sector); |
cb2a1a62 | 882 | if (!iot) { |
57ea8602 JA |
883 | if (verbose) |
884 | fprintf(stderr, "issue not found for (%d,%d): %llu\n", | |
885 | MAJOR(pdi->dev), MINOR(pdi->dev), | |
886 | (unsigned long long) t->sector); | |
2e3e8ded | 887 | return -1; |
cb2a1a62 | 888 | } |
2e3e8ded JA |
889 | |
890 | iot->dispatch_time = t->time; | |
50adc0ba JA |
891 | elapsed = iot->dispatch_time - iot->queue_time; |
892 | ||
893 | if (per_process_stats) { | |
bf0720af | 894 | struct per_process_info *ppi = find_process(iot->pid,iot->comm); |
b9d40d6f | 895 | int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
50adc0ba | 896 | |
b9d40d6f JA |
897 | if (ppi && elapsed > ppi->longest_dispatch_wait[w]) |
898 | ppi->longest_dispatch_wait[w] = elapsed; | |
50adc0ba JA |
899 | } |
900 | ||
901 | return elapsed; | |
2e3e8ded JA |
902 | } |
903 | ||
904 | /* | |
905 | * return time between dispatch and complete | |
906 | */ | |
f7bd1a9b JA |
907 | static unsigned long long log_track_complete(struct per_dev_info *pdi, |
908 | struct blk_io_trace *t) | |
2e3e8ded JA |
909 | { |
910 | unsigned long long elapsed; | |
911 | struct io_track *iot; | |
912 | ||
913 | if (!track_ios) | |
914 | return -1; | |
915 | if ((t->action & BLK_TC_ACT(BLK_TC_FS)) == 0) | |
916 | return -1; | |
917 | ||
f7bd1a9b | 918 | iot = __find_track(pdi, t->sector); |
cb2a1a62 | 919 | if (!iot) { |
57ea8602 JA |
920 | if (verbose) |
921 | fprintf(stderr,"complete not found for (%d,%d): %llu\n", | |
922 | MAJOR(pdi->dev), MINOR(pdi->dev), | |
923 | (unsigned long long) t->sector); | |
2e3e8ded | 924 | return -1; |
cb2a1a62 | 925 | } |
2e3e8ded JA |
926 | |
927 | iot->completion_time = t->time; | |
928 | elapsed = iot->completion_time - iot->dispatch_time; | |
929 | ||
50adc0ba | 930 | if (per_process_stats) { |
bf0720af | 931 | struct per_process_info *ppi = find_process(iot->pid,iot->comm); |
b9d40d6f | 932 | int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
50adc0ba | 933 | |
b9d40d6f JA |
934 | if (ppi && elapsed > ppi->longest_completion_wait[w]) |
935 | ppi->longest_completion_wait[w] = elapsed; | |
50adc0ba JA |
936 | } |
937 | ||
2e3e8ded JA |
938 | /* |
939 | * kill the trace, we don't need it after completion | |
940 | */ | |
f7bd1a9b | 941 | rb_erase(&iot->rb_node, &pdi->rb_track); |
2e3e8ded JA |
942 | free(iot); |
943 | ||
944 | return elapsed; | |
945 | } | |
946 | ||
947 | ||
152f6476 JA |
948 | static struct io_stats *find_process_io_stats(__u32 pid, char *name) |
949 | { | |
bf0720af | 950 | struct per_process_info *ppi = find_process(pid, name); |
152f6476 JA |
951 | |
952 | if (!ppi) { | |
953 | ppi = malloc(sizeof(*ppi)); | |
954 | memset(ppi, 0, sizeof(*ppi)); | |
bf0720af | 955 | memcpy(ppi->name, name, 16); |
152f6476 JA |
956 | ppi->pid = pid; |
957 | add_process_to_hash(ppi); | |
958 | add_process_to_list(ppi); | |
959 | } | |
960 | ||
961 | return &ppi->io_stats; | |
962 | } | |
963 | ||
e7c9f3ff NS |
964 | static char *get_dev_name(struct per_dev_info *pdi, char *buffer, int size) |
965 | { | |
966 | if (pdi->name) | |
967 | snprintf(buffer, size, "%s", pdi->name); | |
968 | else | |
f7bd1a9b | 969 | snprintf(buffer, size, "%d,%d",MAJOR(pdi->dev),MINOR(pdi->dev)); |
e7c9f3ff NS |
970 | return buffer; |
971 | } | |
972 | ||
e7c9f3ff | 973 | static void check_time(struct per_dev_info *pdi, struct blk_io_trace *bit) |
cfab07eb AB |
974 | { |
975 | unsigned long long this = bit->time; | |
e7c9f3ff | 976 | unsigned long long last = pdi->last_reported_time; |
cfab07eb | 977 | |
e7c9f3ff NS |
978 | pdi->backwards = (this < last) ? 'B' : ' '; |
979 | pdi->last_reported_time = this; | |
cfab07eb AB |
980 | } |
981 | ||
152f6476 JA |
982 | static inline void __account_m(struct io_stats *ios, struct blk_io_trace *t, |
983 | int rw) | |
d0ca268b JA |
984 | { |
985 | if (rw) { | |
152f6476 | 986 | ios->mwrites++; |
ae957cbc | 987 | ios->qwrite_kb += t_kb(t); |
d0ca268b | 988 | } else { |
152f6476 | 989 | ios->mreads++; |
ae957cbc | 990 | ios->qread_kb += t_kb(t); |
152f6476 JA |
991 | } |
992 | } | |
993 | ||
994 | static inline void account_m(struct blk_io_trace *t, struct per_cpu_info *pci, | |
995 | int rw) | |
996 | { | |
997 | __account_m(&pci->io_stats, t, rw); | |
998 | ||
999 | if (per_process_stats) { | |
1000 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
1001 | ||
1002 | __account_m(ios, t, rw); | |
d0ca268b JA |
1003 | } |
1004 | } | |
1005 | ||
b6076a9b JA |
1006 | static inline void __account_queue(struct io_stats *ios, struct blk_io_trace *t, |
1007 | int rw) | |
d0ca268b JA |
1008 | { |
1009 | if (rw) { | |
152f6476 | 1010 | ios->qwrites++; |
ae957cbc | 1011 | ios->qwrite_kb += t_kb(t); |
d0ca268b | 1012 | } else { |
152f6476 | 1013 | ios->qreads++; |
ae957cbc | 1014 | ios->qread_kb += t_kb(t); |
152f6476 JA |
1015 | } |
1016 | } | |
1017 | ||
b6076a9b JA |
1018 | static inline void account_queue(struct blk_io_trace *t, |
1019 | struct per_cpu_info *pci, int rw) | |
152f6476 | 1020 | { |
b6076a9b | 1021 | __account_queue(&pci->io_stats, t, rw); |
152f6476 JA |
1022 | |
1023 | if (per_process_stats) { | |
1024 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
1025 | ||
b6076a9b | 1026 | __account_queue(ios, t, rw); |
d0ca268b JA |
1027 | } |
1028 | } | |
1029 | ||
e21dc4dd | 1030 | static inline void __account_c(struct io_stats *ios, int rw, int bytes) |
d0ca268b JA |
1031 | { |
1032 | if (rw) { | |
152f6476 JA |
1033 | ios->cwrites++; |
1034 | ios->cwrite_kb += bytes >> 10; | |
d0ca268b | 1035 | } else { |
152f6476 JA |
1036 | ios->creads++; |
1037 | ios->cread_kb += bytes >> 10; | |
1038 | } | |
1039 | } | |
1040 | ||
1041 | static inline void account_c(struct blk_io_trace *t, struct per_cpu_info *pci, | |
1042 | int rw, int bytes) | |
1043 | { | |
1044 | __account_c(&pci->io_stats, rw, bytes); | |
1045 | ||
1046 | if (per_process_stats) { | |
1047 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
1048 | ||
1049 | __account_c(ios, rw, bytes); | |
d0ca268b JA |
1050 | } |
1051 | } | |
1052 | ||
b6076a9b JA |
1053 | static inline void __account_issue(struct io_stats *ios, int rw, |
1054 | unsigned int bytes) | |
afd2d7ad | 1055 | { |
1056 | if (rw) { | |
152f6476 JA |
1057 | ios->iwrites++; |
1058 | ios->iwrite_kb += bytes >> 10; | |
afd2d7ad | 1059 | } else { |
152f6476 JA |
1060 | ios->ireads++; |
1061 | ios->iread_kb += bytes >> 10; | |
afd2d7ad | 1062 | } |
1063 | } | |
1064 | ||
b6076a9b JA |
1065 | static inline void account_issue(struct blk_io_trace *t, |
1066 | struct per_cpu_info *pci, int rw) | |
d0ca268b | 1067 | { |
b6076a9b | 1068 | __account_issue(&pci->io_stats, rw, t->bytes); |
152f6476 JA |
1069 | |
1070 | if (per_process_stats) { | |
1071 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
d5396421 | 1072 | |
b6076a9b | 1073 | __account_issue(ios, rw, t->bytes); |
152f6476 JA |
1074 | } |
1075 | } | |
1076 | ||
06639b27 JA |
1077 | static inline void __account_unplug(struct io_stats *ios, int timer) |
1078 | { | |
1079 | if (timer) | |
1080 | ios->timer_unplugs++; | |
1081 | else | |
1082 | ios->io_unplugs++; | |
1083 | } | |
1084 | ||
1085 | static inline void account_unplug(struct blk_io_trace *t, | |
1086 | struct per_cpu_info *pci, int timer) | |
1087 | { | |
1088 | __account_unplug(&pci->io_stats, timer); | |
1089 | ||
1090 | if (per_process_stats) { | |
1091 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
1092 | ||
1093 | __account_unplug(ios, timer); | |
1094 | } | |
1095 | } | |
1096 | ||
4054070a JA |
1097 | static inline void __account_requeue(struct io_stats *ios, |
1098 | struct blk_io_trace *t, int rw) | |
1099 | { | |
1100 | if (rw) { | |
1101 | ios->wrqueue++; | |
1102 | ios->iwrite_kb -= t_kb(t); | |
1103 | } else { | |
1104 | ios->rrqueue++; | |
1105 | ios->iread_kb -= t_kb(t); | |
1106 | } | |
1107 | } | |
1108 | ||
1109 | static inline void account_requeue(struct blk_io_trace *t, | |
1110 | struct per_cpu_info *pci, int rw) | |
1111 | { | |
1112 | __account_requeue(&pci->io_stats, t, rw); | |
1113 | ||
1114 | if (per_process_stats) { | |
1115 | struct io_stats *ios = find_process_io_stats(t->pid, t->comm); | |
1116 | ||
1117 | __account_requeue(ios, t, rw); | |
1118 | } | |
1119 | } | |
1120 | ||
f7bd1a9b JA |
1121 | static void log_complete(struct per_dev_info *pdi, struct per_cpu_info *pci, |
1122 | struct blk_io_trace *t, char *act) | |
ab197ca7 | 1123 | { |
f7bd1a9b | 1124 | process_fmt(act, pci, t, log_track_complete(pdi, t), 0, NULL); |
ab197ca7 AB |
1125 | } |
1126 | ||
f7bd1a9b JA |
1127 | static void log_insert(struct per_dev_info *pdi, struct per_cpu_info *pci, |
1128 | struct blk_io_trace *t, char *act) | |
b6076a9b | 1129 | { |
f7bd1a9b | 1130 | process_fmt(act, pci, t, log_track_insert(pdi, t), 0, NULL); |
b6076a9b JA |
1131 | } |
1132 | ||
ab197ca7 AB |
1133 | static void log_queue(struct per_cpu_info *pci, struct blk_io_trace *t, |
1134 | char *act) | |
1135 | { | |
b6076a9b | 1136 | process_fmt(act, pci, t, -1, 0, NULL); |
ab197ca7 | 1137 | } |
2e3e8ded | 1138 | |
f7bd1a9b JA |
1139 | static void log_issue(struct per_dev_info *pdi, struct per_cpu_info *pci, |
1140 | struct blk_io_trace *t, char *act) | |
ab197ca7 | 1141 | { |
f7bd1a9b | 1142 | process_fmt(act, pci, t, log_track_issue(pdi, t), 0, NULL); |
d0ca268b JA |
1143 | } |
1144 | ||
f7bd1a9b JA |
1145 | static void log_merge(struct per_dev_info *pdi, struct per_cpu_info *pci, |
1146 | struct blk_io_trace *t, char *act) | |
d0ca268b | 1147 | { |
a01516de | 1148 | if (act[0] == 'F') |
f7bd1a9b | 1149 | log_track_frontmerge(pdi, t); |
2e3e8ded | 1150 | |
ab197ca7 | 1151 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
d0ca268b JA |
1152 | } |
1153 | ||
dfe34da1 | 1154 | static void log_action(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 1155 | char *act) |
dfe34da1 | 1156 | { |
ab197ca7 | 1157 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
dfe34da1 JA |
1158 | } |
1159 | ||
d5396421 | 1160 | static void log_generic(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 1161 | char *act) |
d0ca268b | 1162 | { |
ab197ca7 | 1163 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
d0ca268b JA |
1164 | } |
1165 | ||
ab197ca7 | 1166 | static void log_unplug(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 1167 | char *act) |
67e14fdc | 1168 | { |
ab197ca7 | 1169 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
67e14fdc JA |
1170 | } |
1171 | ||
93f1c611 JA |
1172 | static void log_split(struct per_cpu_info *pci, struct blk_io_trace *t, |
1173 | char *act) | |
1174 | { | |
1175 | process_fmt(act, pci, t, -1ULL, 0, NULL); | |
1176 | } | |
1177 | ||
ab197ca7 | 1178 | static void log_pc(struct per_cpu_info *pci, struct blk_io_trace *t, char *act) |
d0ca268b | 1179 | { |
ab197ca7 | 1180 | unsigned char *buf = (unsigned char *) t + sizeof(*t); |
d0ca268b | 1181 | |
ab197ca7 | 1182 | process_fmt(act, pci, t, -1ULL, t->pdu_len, buf); |
d0ca268b JA |
1183 | } |
1184 | ||
ff3a732c | 1185 | static void dump_trace_pc(struct blk_io_trace *t, struct per_cpu_info *pci) |
d0ca268b | 1186 | { |
56f2af81 JA |
1187 | int act = t->action & 0xffff; |
1188 | ||
1189 | switch (act) { | |
d0ca268b | 1190 | case __BLK_TA_QUEUE: |
3639a11e | 1191 | log_generic(pci, t, "Q"); |
d0ca268b JA |
1192 | break; |
1193 | case __BLK_TA_GETRQ: | |
3639a11e | 1194 | log_generic(pci, t, "G"); |
d0ca268b JA |
1195 | break; |
1196 | case __BLK_TA_SLEEPRQ: | |
3639a11e | 1197 | log_generic(pci, t, "S"); |
d0ca268b JA |
1198 | break; |
1199 | case __BLK_TA_REQUEUE: | |
3639a11e | 1200 | log_generic(pci, t, "R"); |
d0ca268b JA |
1201 | break; |
1202 | case __BLK_TA_ISSUE: | |
ab197ca7 | 1203 | log_pc(pci, t, "D"); |
d0ca268b JA |
1204 | break; |
1205 | case __BLK_TA_COMPLETE: | |
3639a11e | 1206 | log_pc(pci, t, "C"); |
d0ca268b | 1207 | break; |
56f2af81 JA |
1208 | case __BLK_TA_INSERT: |
1209 | log_pc(pci, t, "I"); | |
1210 | break; | |
d0ca268b | 1211 | default: |
56f2af81 | 1212 | fprintf(stderr, "Bad pc action %x\n", act); |
87b72777 | 1213 | break; |
d0ca268b | 1214 | } |
d0ca268b JA |
1215 | } |
1216 | ||
f7bd1a9b JA |
1217 | static void dump_trace_fs(struct blk_io_trace *t, struct per_dev_info *pdi, |
1218 | struct per_cpu_info *pci) | |
d0ca268b | 1219 | { |
649c7b66 | 1220 | int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
7997c5b0 | 1221 | int act = t->action & 0xffff; |
d0ca268b | 1222 | |
7997c5b0 | 1223 | switch (act) { |
d0ca268b | 1224 | case __BLK_TA_QUEUE: |
b6076a9b | 1225 | account_queue(t, pci, w); |
3639a11e | 1226 | log_queue(pci, t, "Q"); |
d0ca268b | 1227 | break; |
b6076a9b | 1228 | case __BLK_TA_INSERT: |
f7bd1a9b | 1229 | log_insert(pdi, pci, t, "I"); |
b6076a9b | 1230 | break; |
d0ca268b | 1231 | case __BLK_TA_BACKMERGE: |
152f6476 | 1232 | account_m(t, pci, w); |
f7bd1a9b | 1233 | log_merge(pdi, pci, t, "M"); |
d0ca268b JA |
1234 | break; |
1235 | case __BLK_TA_FRONTMERGE: | |
152f6476 | 1236 | account_m(t, pci, w); |
f7bd1a9b | 1237 | log_merge(pdi, pci, t, "F"); |
d0ca268b JA |
1238 | break; |
1239 | case __BLK_TA_GETRQ: | |
f7bd1a9b | 1240 | log_track_getrq(pdi, t); |
3639a11e | 1241 | log_generic(pci, t, "G"); |
d0ca268b JA |
1242 | break; |
1243 | case __BLK_TA_SLEEPRQ: | |
3639a11e | 1244 | log_generic(pci, t, "S"); |
d0ca268b JA |
1245 | break; |
1246 | case __BLK_TA_REQUEUE: | |
649c7b66 | 1247 | pdi->cur_depth[w]--; |
4054070a | 1248 | account_requeue(t, pci, w); |
3639a11e | 1249 | log_queue(pci, t, "R"); |
d0ca268b JA |
1250 | break; |
1251 | case __BLK_TA_ISSUE: | |
b6076a9b | 1252 | account_issue(t, pci, w); |
649c7b66 JA |
1253 | pdi->cur_depth[w]++; |
1254 | if (pdi->cur_depth[w] > pdi->max_depth[w]) | |
1255 | pdi->max_depth[w] = pdi->cur_depth[w]; | |
f7bd1a9b | 1256 | log_issue(pdi, pci, t, "D"); |
d0ca268b JA |
1257 | break; |
1258 | case __BLK_TA_COMPLETE: | |
649c7b66 | 1259 | pdi->cur_depth[w]--; |
152f6476 | 1260 | account_c(t, pci, w, t->bytes); |
f7bd1a9b | 1261 | log_complete(pdi, pci, t, "C"); |
d0ca268b | 1262 | break; |
88b1a526 | 1263 | case __BLK_TA_PLUG: |
3639a11e | 1264 | log_action(pci, t, "P"); |
88b1a526 | 1265 | break; |
3639a11e | 1266 | case __BLK_TA_UNPLUG_IO: |
06639b27 | 1267 | account_unplug(t, pci, 0); |
3639a11e JA |
1268 | log_unplug(pci, t, "U"); |
1269 | break; | |
1270 | case __BLK_TA_UNPLUG_TIMER: | |
06639b27 | 1271 | account_unplug(t, pci, 1); |
3639a11e | 1272 | log_unplug(pci, t, "UT"); |
88b1a526 | 1273 | break; |
93f1c611 JA |
1274 | case __BLK_TA_SPLIT: |
1275 | log_split(pci, t, "X"); | |
1276 | break; | |
1277 | case __BLK_TA_BOUNCE: | |
1278 | log_generic(pci, t, "B"); | |
1279 | break; | |
a8f30e64 JA |
1280 | case __BLK_TA_REMAP: |
1281 | log_generic(pci, t, "A"); | |
1282 | break; | |
d0ca268b JA |
1283 | default: |
1284 | fprintf(stderr, "Bad fs action %x\n", t->action); | |
1f79c4a0 | 1285 | break; |
d0ca268b | 1286 | } |
d0ca268b JA |
1287 | } |
1288 | ||
ff3a732c JA |
1289 | static void dump_trace(struct blk_io_trace *t, struct per_cpu_info *pci, |
1290 | struct per_dev_info *pdi) | |
d0ca268b JA |
1291 | { |
1292 | if (t->action & BLK_TC_ACT(BLK_TC_PC)) | |
ff3a732c | 1293 | dump_trace_pc(t, pci); |
d0ca268b | 1294 | else |
f7bd1a9b | 1295 | dump_trace_fs(t, pdi, pci); |
87b72777 | 1296 | |
20ed6177 JA |
1297 | if (!pdi->events) |
1298 | pdi->first_reported_time = t->time; | |
1299 | ||
e7c9f3ff | 1300 | pdi->events++; |
d0ca268b JA |
1301 | } |
1302 | ||
4c523165 JA |
1303 | /* |
1304 | * print in a proper way, not too small and not too big. if more than | |
1305 | * 1000,000K, turn into M and so on | |
1306 | */ | |
1307 | static char *size_cnv(char *dst, unsigned long long num, int in_kb) | |
1308 | { | |
da19e768 | 1309 | char suff[] = { '\0', 'K', 'M', 'G', 'P' }; |
0dc3602c | 1310 | unsigned int i = 0; |
4c523165 JA |
1311 | |
1312 | if (in_kb) | |
1313 | i++; | |
1314 | ||
0dc3602c | 1315 | while (num > 1000 * 1000ULL && (i < sizeof(suff) - 1)) { |
4c523165 JA |
1316 | i++; |
1317 | num /= 1000; | |
1318 | } | |
1319 | ||
1320 | sprintf(dst, "%'8Lu%c", num, suff[i]); | |
1321 | return dst; | |
1322 | } | |
1323 | ||
649c7b66 JA |
1324 | static void dump_io_stats(struct per_dev_info *pdi, struct io_stats *ios, |
1325 | char *msg) | |
5c017e4b | 1326 | { |
4c523165 JA |
1327 | static char x[256], y[256]; |
1328 | ||
152f6476 JA |
1329 | fprintf(ofp, "%s\n", msg); |
1330 | ||
4c523165 JA |
1331 | fprintf(ofp, " Reads Queued: %s, %siB\t", size_cnv(x, ios->qreads, 0), size_cnv(y, ios->qread_kb, 1)); |
1332 | fprintf(ofp, " Writes Queued: %s, %siB\n", size_cnv(x, ios->qwrites, 0), size_cnv(y, ios->qwrite_kb, 1)); | |
0a6b8fc4 | 1333 | |
4c523165 JA |
1334 | fprintf(ofp, " Read Dispatches: %s, %siB\t", size_cnv(x, ios->ireads, 0), size_cnv(y, ios->iread_kb, 1)); |
1335 | fprintf(ofp, " Write Dispatches: %s, %siB\n", size_cnv(x, ios->iwrites, 0), size_cnv(y, ios->iwrite_kb, 1)); | |
4054070a JA |
1336 | fprintf(ofp, " Reads Requeued: %s\t\t", size_cnv(x, ios->rrqueue, 0)); |
1337 | fprintf(ofp, " Writes Requeued: %s\n", size_cnv(x, ios->wrqueue, 0)); | |
4c523165 JA |
1338 | fprintf(ofp, " Reads Completed: %s, %siB\t", size_cnv(x, ios->creads, 0), size_cnv(y, ios->cread_kb, 1)); |
1339 | fprintf(ofp, " Writes Completed: %s, %siB\n", size_cnv(x, ios->cwrites, 0), size_cnv(y, ios->cwrite_kb, 1)); | |
152f6476 | 1340 | fprintf(ofp, " Read Merges: %'8lu%8c\t", ios->mreads, ' '); |
152f6476 | 1341 | fprintf(ofp, " Write Merges: %'8lu\n", ios->mwrites); |
649c7b66 JA |
1342 | if (pdi) { |
1343 | fprintf(ofp, " Read depth: %'8u%8c\t", pdi->max_depth[0], ' '); | |
1344 | fprintf(ofp, " Write depth: %'8u\n", pdi->max_depth[1]); | |
1345 | } | |
06639b27 JA |
1346 | fprintf(ofp, " IO unplugs: %'8lu%8c\t", ios->io_unplugs, ' '); |
1347 | fprintf(ofp, " Timer unplugs: %'8lu\n", ios->timer_unplugs); | |
5c017e4b JA |
1348 | } |
1349 | ||
50adc0ba JA |
1350 | static void dump_wait_stats(struct per_process_info *ppi) |
1351 | { | |
b9d40d6f JA |
1352 | unsigned long rawait = ppi->longest_allocation_wait[0] / 1000; |
1353 | unsigned long rdwait = ppi->longest_dispatch_wait[0] / 1000; | |
1354 | unsigned long rcwait = ppi->longest_completion_wait[0] / 1000; | |
1355 | unsigned long wawait = ppi->longest_allocation_wait[1] / 1000; | |
1356 | unsigned long wdwait = ppi->longest_dispatch_wait[1] / 1000; | |
1357 | unsigned long wcwait = ppi->longest_completion_wait[1] / 1000; | |
1358 | ||
1359 | fprintf(ofp, " Allocation wait: %'8lu%8c\t", rawait, ' '); | |
1360 | fprintf(ofp, " Allocation wait: %'8lu\n", wawait); | |
1361 | fprintf(ofp, " Dispatch wait: %'8lu%8c\t", rdwait, ' '); | |
1362 | fprintf(ofp, " Dispatch wait: %'8lu\n", wdwait); | |
1363 | fprintf(ofp, " Completion wait: %'8lu%8c\t", rcwait, ' '); | |
1364 | fprintf(ofp, " Completion wait: %'8lu\n", wcwait); | |
50adc0ba JA |
1365 | } |
1366 | ||
886ecf0e JA |
1367 | static int ppi_name_compare(const void *p1, const void *p2) |
1368 | { | |
1369 | struct per_process_info *ppi1 = *((struct per_process_info **) p1); | |
1370 | struct per_process_info *ppi2 = *((struct per_process_info **) p2); | |
1371 | int res; | |
1372 | ||
1373 | res = strverscmp(ppi1->name, ppi2->name); | |
1374 | if (!res) | |
06e6f286 | 1375 | res = ppi1->pid > ppi2->pid; |
886ecf0e JA |
1376 | |
1377 | return res; | |
1378 | } | |
1379 | ||
1380 | static void sort_process_list(void) | |
1381 | { | |
1382 | struct per_process_info **ppis; | |
1383 | struct per_process_info *ppi; | |
1384 | int i = 0; | |
1385 | ||
1386 | ppis = malloc(ppi_list_entries * sizeof(struct per_process_info *)); | |
1387 | ||
1388 | ppi = ppi_list; | |
1389 | while (ppi) { | |
06e6f286 | 1390 | ppis[i++] = ppi; |
886ecf0e JA |
1391 | ppi = ppi->list_next; |
1392 | } | |
1393 | ||
06e6f286 | 1394 | qsort(ppis, ppi_list_entries, sizeof(ppi), ppi_name_compare); |
886ecf0e JA |
1395 | |
1396 | i = ppi_list_entries - 1; | |
1397 | ppi_list = NULL; | |
1398 | while (i >= 0) { | |
1399 | ppi = ppis[i]; | |
1400 | ||
1401 | ppi->list_next = ppi_list; | |
1402 | ppi_list = ppi; | |
1403 | i--; | |
1404 | } | |
50c38702 JA |
1405 | |
1406 | free(ppis); | |
886ecf0e JA |
1407 | } |
1408 | ||
152f6476 JA |
1409 | static void show_process_stats(void) |
1410 | { | |
1411 | struct per_process_info *ppi; | |
1412 | ||
886ecf0e JA |
1413 | sort_process_list(); |
1414 | ||
152f6476 JA |
1415 | ppi = ppi_list; |
1416 | while (ppi) { | |
ce8b6b4f JA |
1417 | char name[64]; |
1418 | ||
715d8021 | 1419 | if (ppi->more_than_one) |
bf0720af | 1420 | sprintf(name, "%s (%u, ...)", ppi->name, ppi->pid); |
715d8021 JA |
1421 | else |
1422 | sprintf(name, "%s (%u)", ppi->name, ppi->pid); | |
bf0720af | 1423 | |
649c7b66 | 1424 | dump_io_stats(NULL, &ppi->io_stats, name); |
50adc0ba | 1425 | dump_wait_stats(ppi); |
152f6476 JA |
1426 | ppi = ppi->list_next; |
1427 | } | |
1428 | ||
1429 | fprintf(ofp, "\n"); | |
1430 | } | |
1431 | ||
e7c9f3ff | 1432 | static void show_device_and_cpu_stats(void) |
d0ca268b | 1433 | { |
e7c9f3ff NS |
1434 | struct per_dev_info *pdi; |
1435 | struct per_cpu_info *pci; | |
1436 | struct io_stats total, *ios; | |
20ed6177 | 1437 | unsigned long long rrate, wrate, msec; |
e7c9f3ff NS |
1438 | int i, j, pci_events; |
1439 | char line[3 + 8/*cpu*/ + 2 + 32/*dev*/ + 3]; | |
1440 | char name[32]; | |
1441 | ||
1442 | for (pdi = devices, i = 0; i < ndevices; i++, pdi++) { | |
1443 | ||
1444 | memset(&total, 0, sizeof(total)); | |
1445 | pci_events = 0; | |
1446 | ||
1447 | if (i > 0) | |
1448 | fprintf(ofp, "\n"); | |
1449 | ||
1450 | for (pci = pdi->cpus, j = 0; j < pdi->ncpus; j++, pci++) { | |
1451 | if (!pci->nelems) | |
1452 | continue; | |
1453 | ||
1454 | ios = &pci->io_stats; | |
1455 | total.qreads += ios->qreads; | |
1456 | total.qwrites += ios->qwrites; | |
1457 | total.creads += ios->creads; | |
1458 | total.cwrites += ios->cwrites; | |
1459 | total.mreads += ios->mreads; | |
1460 | total.mwrites += ios->mwrites; | |
1461 | total.ireads += ios->ireads; | |
1462 | total.iwrites += ios->iwrites; | |
4054070a JA |
1463 | total.rrqueue += ios->rrqueue; |
1464 | total.wrqueue += ios->wrqueue; | |
e7c9f3ff NS |
1465 | total.qread_kb += ios->qread_kb; |
1466 | total.qwrite_kb += ios->qwrite_kb; | |
1467 | total.cread_kb += ios->cread_kb; | |
1468 | total.cwrite_kb += ios->cwrite_kb; | |
1469 | total.iread_kb += ios->iread_kb; | |
1470 | total.iwrite_kb += ios->iwrite_kb; | |
06639b27 JA |
1471 | total.timer_unplugs += ios->timer_unplugs; |
1472 | total.io_unplugs += ios->io_unplugs; | |
e7c9f3ff NS |
1473 | |
1474 | snprintf(line, sizeof(line) - 1, "CPU%d (%s):", | |
1475 | j, get_dev_name(pdi, name, sizeof(name))); | |
649c7b66 | 1476 | dump_io_stats(pdi, ios, line); |
e7c9f3ff NS |
1477 | pci_events++; |
1478 | } | |
5c017e4b | 1479 | |
e7c9f3ff NS |
1480 | if (pci_events > 1) { |
1481 | fprintf(ofp, "\n"); | |
1482 | snprintf(line, sizeof(line) - 1, "Total (%s):", | |
1483 | get_dev_name(pdi, name, sizeof(name))); | |
649c7b66 | 1484 | dump_io_stats(NULL, &total, line); |
e7c9f3ff | 1485 | } |
d0ca268b | 1486 | |
20ed6177 | 1487 | wrate = rrate = 0; |
20ed6177 JA |
1488 | msec = (pdi->last_reported_time - pdi->first_reported_time) / 1000000; |
1489 | if (msec) { | |
1490 | rrate = 1000 * total.cread_kb / msec; | |
1491 | wrate = 1000 * total.cwrite_kb / msec; | |
1492 | } | |
1493 | ||
dce0f678 AB |
1494 | fprintf(ofp, "\nThroughput (R/W): %'LuKiB/s / %'LuKiB/s\n", |
1495 | rrate, wrate); | |
1496 | fprintf(ofp, "Events (%s): %'Lu entries\n", | |
1497 | get_dev_name(pdi, line, sizeof(line)), pdi->events); | |
492da111 AB |
1498 | |
1499 | collect_pdi_skips(pdi); | |
1500 | fprintf(ofp, "Skips: %'lu forward (%'llu - %5.1lf%%)\n", | |
dce0f678 AB |
1501 | pdi->skips,pdi->seq_skips, |
1502 | 100.0 * ((double)pdi->seq_skips / | |
dce0f678 | 1503 | (double)(pdi->events + pdi->seq_skips))); |
e7c9f3ff | 1504 | } |
d0ca268b JA |
1505 | } |
1506 | ||
4f0ae44f JA |
1507 | static void find_genesis(void) |
1508 | { | |
1509 | struct trace *t = trace_list; | |
1510 | ||
1511 | genesis_time = -1ULL; | |
1512 | while (t != NULL) { | |
1513 | if (t->bit->time < genesis_time) | |
1514 | genesis_time = t->bit->time; | |
1515 | ||
1516 | t = t->next; | |
1517 | } | |
1518 | } | |
1519 | ||
7f4d89e6 | 1520 | static inline int check_stopwatch(struct blk_io_trace *bit) |
4f0ae44f | 1521 | { |
7f4d89e6 JA |
1522 | if (bit->time < stopwatch_end && |
1523 | bit->time >= stopwatch_start) | |
4f0ae44f JA |
1524 | return 0; |
1525 | ||
1526 | return 1; | |
1527 | } | |
1528 | ||
53c68c88 JA |
1529 | /* |
1530 | * return youngest entry read | |
1531 | */ | |
1532 | static int sort_entries(unsigned long long *youngest) | |
4f0ae44f | 1533 | { |
210824c3 JA |
1534 | struct per_dev_info *pdi = NULL; |
1535 | struct per_cpu_info *pci = NULL; | |
4f0ae44f | 1536 | struct trace *t; |
4f0ae44f JA |
1537 | |
1538 | if (!genesis_time) | |
1539 | find_genesis(); | |
1540 | ||
d6222db8 | 1541 | *youngest = 0; |
4f0ae44f JA |
1542 | while ((t = trace_list) != NULL) { |
1543 | struct blk_io_trace *bit = t->bit; | |
1544 | ||
1545 | trace_list = t->next; | |
1546 | ||
7f4d89e6 | 1547 | bit->time -= genesis_time; |
4f0ae44f | 1548 | |
d6222db8 JA |
1549 | if (bit->time < *youngest || !*youngest) |
1550 | *youngest = bit->time; | |
1551 | ||
210824c3 JA |
1552 | if (!pdi || pdi->dev != bit->device) { |
1553 | pdi = get_dev_info(bit->device); | |
1554 | pci = NULL; | |
1555 | } | |
1556 | ||
1557 | if (!pci || pci->cpu != bit->cpu) | |
1558 | pci = get_cpu_info(pdi, bit->cpu); | |
1559 | ||
1560 | if (bit->sequence < pci->smallest_seq_read) | |
1561 | pci->smallest_seq_read = bit->sequence; | |
774a1a10 | 1562 | |
7f4d89e6 | 1563 | if (check_stopwatch(bit)) { |
4f0ae44f JA |
1564 | bit_free(bit); |
1565 | t_free(t); | |
1566 | continue; | |
1567 | } | |
1568 | ||
2a1b3424 | 1569 | if (trace_rb_insert_sort(t)) |
53c68c88 | 1570 | return -1; |
4f0ae44f JA |
1571 | } |
1572 | ||
53c68c88 | 1573 | return 0; |
4f0ae44f JA |
1574 | } |
1575 | ||
824c2b39 JA |
1576 | /* |
1577 | * to continue, we must have traces from all online cpus in the tree | |
1578 | */ | |
1579 | static int check_cpu_map(struct per_dev_info *pdi) | |
1580 | { | |
1581 | unsigned long *cpu_map; | |
1582 | struct rb_node *n; | |
1583 | struct trace *__t; | |
1584 | unsigned int i; | |
1585 | int ret, cpu; | |
1586 | ||
1587 | /* | |
1588 | * create a map of the cpus we have traces for | |
1589 | */ | |
1590 | cpu_map = malloc(pdi->cpu_map_max / sizeof(long)); | |
1591 | n = rb_first(&rb_sort_root); | |
1592 | while (n) { | |
1593 | __t = rb_entry(n, struct trace, rb_node); | |
1594 | cpu = __t->bit->cpu; | |
1595 | ||
1596 | cpu_map[CPU_IDX(cpu)] |= (1UL << CPU_BIT(cpu)); | |
1597 | n = rb_next(n); | |
1598 | } | |
1599 | ||
1600 | /* | |
b1c8e614 JA |
1601 | * we can't continue if pdi->cpu_map has entries set that we don't |
1602 | * have in the sort rbtree. the opposite is not a problem, though | |
824c2b39 JA |
1603 | */ |
1604 | ret = 0; | |
1605 | for (i = 0; i < pdi->cpu_map_max / CPUS_PER_LONG; i++) { | |
1606 | if (pdi->cpu_map[i] & ~(cpu_map[i])) { | |
1607 | ret = 1; | |
1608 | break; | |
1609 | } | |
1610 | } | |
1611 | ||
1612 | free(cpu_map); | |
1613 | return ret; | |
1614 | } | |
1615 | ||
a141a7cd | 1616 | static int check_sequence(struct per_dev_info *pdi, struct trace *t, int force) |
2a1b3424 | 1617 | { |
1ca323a5 | 1618 | struct blk_io_trace *bit = t->bit; |
210824c3 JA |
1619 | unsigned long expected_sequence; |
1620 | struct per_cpu_info *pci; | |
1ca323a5 | 1621 | struct trace *__t; |
492da111 | 1622 | |
210824c3 JA |
1623 | pci = get_cpu_info(pdi, bit->cpu); |
1624 | expected_sequence = pci->last_sequence + 1; | |
1625 | ||
774a1a10 | 1626 | if (!expected_sequence) { |
774a1a10 JA |
1627 | /* |
1628 | * 1 should be the first entry, just allow it | |
1629 | */ | |
1630 | if (bit->sequence == 1) | |
1631 | return 0; | |
210824c3 | 1632 | if (bit->sequence == pci->smallest_seq_read) |
79ee9704 | 1633 | return 0; |
774a1a10 | 1634 | |
824c2b39 | 1635 | return check_cpu_map(pdi); |
774a1a10 | 1636 | } |
2a1b3424 JA |
1637 | |
1638 | if (bit->sequence == expected_sequence) | |
1639 | return 0; | |
1640 | ||
2a1b3424 | 1641 | /* |
1c7c54aa JA |
1642 | * we may not have seen that sequence yet. if we are not doing |
1643 | * the final run, break and wait for more entries. | |
1c24add6 | 1644 | */ |
210824c3 JA |
1645 | if (expected_sequence < pci->smallest_seq_read) { |
1646 | __t = trace_rb_find_last(pdi, pci, expected_sequence); | |
1ca323a5 | 1647 | if (!__t) |
1c7c54aa | 1648 | goto skip; |
2a1b3424 | 1649 | |
1ca323a5 | 1650 | __put_trace_last(pdi, __t); |
2a1b3424 | 1651 | return 0; |
a141a7cd JA |
1652 | } else if (!force) { |
1653 | return 1; | |
0b07f23e | 1654 | } else { |
1c7c54aa | 1655 | skip: |
492da111 AB |
1656 | if (check_current_skips(pdi,bit->sequence)) |
1657 | return 0; | |
1658 | ||
965eca2d AB |
1659 | if (expected_sequence < bit->sequence) |
1660 | insert_skip(pdi, expected_sequence, bit->sequence - 1); | |
1c7c54aa JA |
1661 | return 0; |
1662 | } | |
2a1b3424 JA |
1663 | } |
1664 | ||
a649216c | 1665 | static void show_entries_rb(int force) |
8fc0abbc | 1666 | { |
1f7afa72 JA |
1667 | struct per_dev_info *pdi = NULL; |
1668 | struct per_cpu_info *pci = NULL; | |
8fc0abbc | 1669 | struct blk_io_trace *bit; |
3aabcd89 | 1670 | struct rb_node *n; |
8fc0abbc | 1671 | struct trace *t; |
1f7afa72 | 1672 | |
7d747d22 | 1673 | while ((n = rb_first(&rb_sort_root)) != NULL) { |
dd90748f | 1674 | if (is_done() && !force && !pipeline) |
1f7afa72 | 1675 | break; |
8fc0abbc JA |
1676 | |
1677 | t = rb_entry(n, struct trace, rb_node); | |
1678 | bit = t->bit; | |
1679 | ||
210824c3 | 1680 | if (!pdi || pdi->dev != bit->device) { |
287fa3d6 | 1681 | pdi = get_dev_info(bit->device); |
210824c3 JA |
1682 | pci = NULL; |
1683 | } | |
1f7afa72 | 1684 | |
e7c9f3ff NS |
1685 | if (!pdi) { |
1686 | fprintf(stderr, "Unknown device ID? (%d,%d)\n", | |
1687 | MAJOR(bit->device), MINOR(bit->device)); | |
1688 | break; | |
1689 | } | |
1f7afa72 | 1690 | |
a141a7cd JA |
1691 | if (check_sequence(pdi, t, force)) |
1692 | break; | |
cb2a1a62 | 1693 | |
a141a7cd JA |
1694 | if (!force && bit->time > last_allowed_time) |
1695 | break; | |
8fc0abbc | 1696 | |
4f0ae44f | 1697 | check_time(pdi, bit); |
8fc0abbc | 1698 | |
4f0ae44f JA |
1699 | if (!pci || pci->cpu != bit->cpu) |
1700 | pci = get_cpu_info(pdi, bit->cpu); | |
287fa3d6 | 1701 | |
210824c3 JA |
1702 | pci->last_sequence = bit->sequence; |
1703 | ||
cbc927b6 JA |
1704 | pci->nelems++; |
1705 | ||
98f8386b AB |
1706 | if (bit->action & (act_mask << BLK_TC_SHIFT)) |
1707 | dump_trace(bit, pci, pdi); | |
87b72777 | 1708 | |
2a1b3424 | 1709 | put_trace(pdi, t); |
cb2a1a62 | 1710 | } |
8fc0abbc JA |
1711 | } |
1712 | ||
c0e0dbc2 | 1713 | static int read_data(int fd, void *buffer, int bytes, int block, int *fdblock) |
1f79c4a0 JA |
1714 | { |
1715 | int ret, bytes_left, fl; | |
1716 | void *p; | |
1717 | ||
c0e0dbc2 JA |
1718 | if (block != *fdblock) { |
1719 | fl = fcntl(fd, F_GETFL); | |
1f79c4a0 | 1720 | |
c0e0dbc2 JA |
1721 | if (!block) { |
1722 | *fdblock = 0; | |
1723 | fcntl(fd, F_SETFL, fl | O_NONBLOCK); | |
1724 | } else { | |
1725 | *fdblock = 1; | |
1726 | fcntl(fd, F_SETFL, fl & ~O_NONBLOCK); | |
1727 | } | |
1728 | } | |
1f79c4a0 JA |
1729 | |
1730 | bytes_left = bytes; | |
1731 | p = buffer; | |
1732 | while (bytes_left > 0) { | |
1733 | ret = read(fd, p, bytes_left); | |
1734 | if (!ret) | |
1735 | return 1; | |
1736 | else if (ret < 0) { | |
db7e0552 | 1737 | if (errno != EAGAIN) { |
1f79c4a0 | 1738 | perror("read"); |
db7e0552 JA |
1739 | return -1; |
1740 | } | |
a649216c | 1741 | |
5c0f40f7 JA |
1742 | /* |
1743 | * never do partial reads. we can return if we | |
1744 | * didn't read anything and we should not block, | |
1745 | * otherwise wait for data | |
1746 | */ | |
1747 | if ((bytes_left == bytes) && !block) | |
1748 | return 1; | |
1749 | ||
1750 | usleep(10); | |
1751 | continue; | |
1f79c4a0 JA |
1752 | } else { |
1753 | p += ret; | |
1754 | bytes_left -= ret; | |
1755 | } | |
1756 | } | |
1757 | ||
1758 | return 0; | |
1759 | } | |
1760 | ||
c0e0dbc2 | 1761 | static int read_events(int fd, int always_block, int *fdblock) |
cb2a1a62 | 1762 | { |
287fa3d6 | 1763 | struct per_dev_info *pdi = NULL; |
e820abd7 | 1764 | unsigned int events = 0; |
7d747d22 JA |
1765 | |
1766 | while (!is_done() && events < rb_batch) { | |
1767 | struct blk_io_trace *bit; | |
1768 | struct trace *t; | |
db7e0552 | 1769 | int pdu_len, should_block, ret; |
7d747d22 JA |
1770 | __u32 magic; |
1771 | ||
d36421e4 | 1772 | bit = bit_alloc(); |
cb2a1a62 | 1773 | |
c0e0dbc2 JA |
1774 | should_block = !events || always_block; |
1775 | ||
db7e0552 JA |
1776 | ret = read_data(fd, bit, sizeof(*bit), should_block, fdblock); |
1777 | if (ret) { | |
eb9bd4e9 | 1778 | bit_free(bit); |
db7e0552 JA |
1779 | if (!events && ret < 0) |
1780 | events = ret; | |
cb2a1a62 | 1781 | break; |
eb9bd4e9 | 1782 | } |
cb2a1a62 | 1783 | |
7d747d22 JA |
1784 | magic = be32_to_cpu(bit->magic); |
1785 | if ((magic & 0xffffff00) != BLK_IO_TRACE_MAGIC) { | |
1786 | fprintf(stderr, "Bad magic %x\n", magic); | |
1787 | break; | |
1788 | } | |
1789 | ||
1790 | pdu_len = be16_to_cpu(bit->pdu_len); | |
1791 | if (pdu_len) { | |
1792 | void *ptr = realloc(bit, sizeof(*bit) + pdu_len); | |
1793 | ||
c0e0dbc2 | 1794 | if (read_data(fd, ptr + sizeof(*bit), pdu_len, 1, fdblock)) { |
eb9bd4e9 | 1795 | bit_free(ptr); |
7d747d22 | 1796 | break; |
eb9bd4e9 | 1797 | } |
7d747d22 JA |
1798 | |
1799 | bit = ptr; | |
1800 | } | |
1801 | ||
d6222db8 JA |
1802 | trace_to_cpu(bit); |
1803 | ||
1804 | if (verify_trace(bit)) { | |
1805 | bit_free(bit); | |
1806 | continue; | |
1807 | } | |
1808 | ||
d36421e4 | 1809 | t = t_alloc(); |
cb2a1a62 JA |
1810 | memset(t, 0, sizeof(*t)); |
1811 | t->bit = bit; | |
1812 | ||
7d747d22 JA |
1813 | t->next = trace_list; |
1814 | trace_list = t; | |
1f7afa72 | 1815 | |
f7bd1a9b | 1816 | if (!pdi || pdi->dev != bit->device) |
287fa3d6 JA |
1817 | pdi = get_dev_info(bit->device); |
1818 | ||
1819 | if (bit->time > pdi->last_read_time) | |
1820 | pdi->last_read_time = bit->time; | |
1821 | ||
7d747d22 | 1822 | events++; |
cb2a1a62 JA |
1823 | } |
1824 | ||
7d747d22 | 1825 | return events; |
cb2a1a62 JA |
1826 | } |
1827 | ||
d5396421 | 1828 | static int do_file(void) |
d0ca268b | 1829 | { |
7d747d22 | 1830 | struct per_cpu_info *pci; |
73877e12 NS |
1831 | struct per_dev_info *pdi; |
1832 | int i, j, events, events_added; | |
d0ca268b | 1833 | |
7d747d22 JA |
1834 | /* |
1835 | * first prepare all files for reading | |
1836 | */ | |
e8741a4a | 1837 | for (i = 0; i < ndevices; i++) { |
73877e12 NS |
1838 | pdi = &devices[i]; |
1839 | pdi->nfiles = 0; | |
73877e12 | 1840 | |
74feaeb5 | 1841 | for (j = 0;; j++) { |
e7c9f3ff | 1842 | struct stat st; |
d1d7f15f | 1843 | int len = 0; |
6e0073ed | 1844 | char *p, *dname; |
87b72777 | 1845 | |
e7c9f3ff NS |
1846 | pci = get_cpu_info(pdi, j); |
1847 | pci->cpu = j; | |
7d747d22 | 1848 | pci->fd = -1; |
c0e0dbc2 | 1849 | pci->fdblock = -1; |
6e0073ed JA |
1850 | |
1851 | p = strdup(pdi->name); | |
1852 | dname = dirname(p); | |
1853 | if (strcmp(dname, ".")) { | |
1854 | input_dir = dname; | |
1855 | p = strdup(pdi->name); | |
1856 | strcpy(pdi->name, basename(p)); | |
1857 | } | |
1858 | free(p); | |
d0ca268b | 1859 | |
d1d7f15f JA |
1860 | if (input_dir) |
1861 | len = sprintf(pci->fname, "%s/", input_dir); | |
1862 | ||
1863 | snprintf(pci->fname + len, sizeof(pci->fname)-1-len, | |
7d747d22 | 1864 | "%s.blktrace.%d", pdi->name, pci->cpu); |
e7c9f3ff NS |
1865 | if (stat(pci->fname, &st) < 0) |
1866 | break; | |
74feaeb5 AB |
1867 | if (st.st_size) { |
1868 | pci->fd = open(pci->fname, O_RDONLY); | |
1869 | if (pci->fd < 0) { | |
1870 | perror(pci->fname); | |
1871 | continue; | |
1872 | } | |
e7c9f3ff NS |
1873 | } |
1874 | ||
7d747d22 | 1875 | printf("Input file %s added\n", pci->fname); |
73877e12 | 1876 | pdi->nfiles++; |
824c2b39 | 1877 | cpu_mark_online(pdi, pci->cpu); |
d0ca268b | 1878 | } |
d5396421 JA |
1879 | } |
1880 | ||
7d747d22 JA |
1881 | /* |
1882 | * now loop over the files reading in the data | |
1883 | */ | |
412819ce | 1884 | do { |
53c68c88 JA |
1885 | unsigned long long youngest; |
1886 | ||
7d747d22 | 1887 | events_added = 0; |
287fa3d6 | 1888 | last_allowed_time = -1ULL; |
d5396421 | 1889 | |
7d747d22 | 1890 | for (i = 0; i < ndevices; i++) { |
73877e12 NS |
1891 | pdi = &devices[i]; |
1892 | ||
1893 | for (j = 0; j < pdi->nfiles; j++) { | |
d5396421 | 1894 | |
73877e12 | 1895 | pci = get_cpu_info(pdi, j); |
d5396421 | 1896 | |
7d747d22 JA |
1897 | if (pci->fd == -1) |
1898 | continue; | |
51128a28 | 1899 | |
210824c3 JA |
1900 | pci->smallest_seq_read = -1; |
1901 | ||
c0e0dbc2 | 1902 | events = read_events(pci->fd, 1, &pci->fdblock); |
db7e0552 | 1903 | if (events <= 0) { |
824c2b39 | 1904 | cpu_mark_offline(pdi, pci->cpu); |
7d747d22 JA |
1905 | close(pci->fd); |
1906 | pci->fd = -1; | |
1907 | continue; | |
1908 | } | |
d5396421 | 1909 | |
287fa3d6 JA |
1910 | if (pdi->last_read_time < last_allowed_time) |
1911 | last_allowed_time = pdi->last_read_time; | |
d5396421 | 1912 | |
7d747d22 JA |
1913 | events_added += events; |
1914 | } | |
2ff323b0 | 1915 | } |
d5396421 | 1916 | |
53c68c88 JA |
1917 | if (sort_entries(&youngest)) |
1918 | break; | |
1919 | ||
1920 | if (youngest > stopwatch_end) | |
287fa3d6 JA |
1921 | break; |
1922 | ||
a649216c | 1923 | show_entries_rb(0); |
cb2a1a62 | 1924 | |
7d747d22 | 1925 | } while (events_added); |
d5396421 | 1926 | |
a649216c JA |
1927 | if (rb_sort_entries) |
1928 | show_entries_rb(1); | |
1929 | ||
7d747d22 | 1930 | return 0; |
412819ce | 1931 | } |
d5396421 | 1932 | |
412819ce JA |
1933 | static int do_stdin(void) |
1934 | { | |
53c68c88 | 1935 | unsigned long long youngest; |
c0e0dbc2 | 1936 | int fd, events, fdblock; |
d5396421 | 1937 | |
be925321 | 1938 | last_allowed_time = -1ULL; |
1f79c4a0 | 1939 | fd = dup(STDIN_FILENO); |
0b07f23e JA |
1940 | if (fd == -1) { |
1941 | perror("dup stdin"); | |
1942 | return -1; | |
1943 | } | |
d5396421 | 1944 | |
c0e0dbc2 | 1945 | fdblock = -1; |
db7e0552 | 1946 | while ((events = read_events(fd, 0, &fdblock)) > 0) { |
412819ce | 1947 | |
210824c3 | 1948 | #if 0 |
0b07f23e | 1949 | smallest_seq_read = -1U; |
210824c3 | 1950 | #endif |
0b07f23e | 1951 | |
53c68c88 JA |
1952 | if (sort_entries(&youngest)) |
1953 | break; | |
1954 | ||
1955 | if (youngest > stopwatch_end) | |
2ff323b0 JA |
1956 | break; |
1957 | ||
763d936e | 1958 | show_entries_rb(0); |
0b07f23e | 1959 | } |
d5396421 | 1960 | |
a649216c JA |
1961 | if (rb_sort_entries) |
1962 | show_entries_rb(1); | |
1963 | ||
d5396421 | 1964 | close(fd); |
d5396421 JA |
1965 | return 0; |
1966 | } | |
d0ca268b | 1967 | |
cbc927b6 | 1968 | static void show_stats(void) |
412819ce | 1969 | { |
cbc927b6 JA |
1970 | if (!ofp) |
1971 | return; | |
1972 | if (stats_printed) | |
1973 | return; | |
1974 | ||
1975 | stats_printed = 1; | |
1976 | ||
1977 | if (per_process_stats) | |
1978 | show_process_stats(); | |
1979 | ||
1980 | if (per_device_and_cpu_stats) | |
1981 | show_device_and_cpu_stats(); | |
1982 | ||
152f6476 | 1983 | fflush(ofp); |
412819ce JA |
1984 | } |
1985 | ||
e820abd7 | 1986 | static void handle_sigint(__attribute__((__unused__)) int sig) |
412819ce JA |
1987 | { |
1988 | done = 1; | |
412819ce JA |
1989 | } |
1990 | ||
46e6968b NS |
1991 | /* |
1992 | * Extract start and duration times from a string, allowing | |
1993 | * us to specify a time interval of interest within a trace. | |
1994 | * Format: "duration" (start is zero) or "start:duration". | |
1995 | */ | |
1996 | static int find_stopwatch_interval(char *string) | |
1997 | { | |
1998 | double value; | |
1999 | char *sp; | |
2000 | ||
2001 | value = strtod(string, &sp); | |
2002 | if (sp == string) { | |
2003 | fprintf(stderr,"Invalid stopwatch timer: %s\n", string); | |
2004 | return 1; | |
2005 | } | |
2006 | if (*sp == ':') { | |
2007 | stopwatch_start = DOUBLE_TO_NANO_ULL(value); | |
2008 | string = sp + 1; | |
2009 | value = strtod(string, &sp); | |
2010 | if (sp == string || *sp != '\0') { | |
2011 | fprintf(stderr,"Invalid stopwatch duration time: %s\n", | |
2012 | string); | |
2013 | return 1; | |
2014 | } | |
2015 | } else if (*sp != '\0') { | |
2016 | fprintf(stderr,"Invalid stopwatch start timer: %s\n", string); | |
2017 | return 1; | |
2018 | } | |
1b928247 JA |
2019 | stopwatch_end = DOUBLE_TO_NANO_ULL(value); |
2020 | if (stopwatch_end <= stopwatch_start) { | |
2021 | fprintf(stderr, "Invalid stopwatch interval: %Lu -> %Lu\n", | |
2022 | stopwatch_start, stopwatch_end); | |
2023 | return 1; | |
2024 | } | |
2025 | ||
46e6968b NS |
2026 | return 0; |
2027 | } | |
2028 | ||
52724a0e JA |
2029 | static char usage_str[] = \ |
2030 | "[ -i <input name> ] [-o <output name> [ -s ] [ -t ] [ -q ]\n" \ | |
2031 | "[ -w start:stop ] [ -f output format ] [ -F format spec ] [ -v] \n\n" \ | |
2032 | "\t-i Input file containing trace data, or '-' for stdin\n" \ | |
d1d7f15f | 2033 | "\t-D Directory to prepend to input file names\n" \ |
52724a0e JA |
2034 | "\t-o Output file. If not given, output is stdout\n" \ |
2035 | "\t-b stdin read batching\n" \ | |
2036 | "\t-s Show per-program io statistics\n" \ | |
ac740d98 | 2037 | "\t-h Hash processes by name, not pid\n" \ |
52724a0e JA |
2038 | "\t-t Track individual ios. Will tell you the time a request took\n" \ |
2039 | "\t to get queued, to get dispatched, and to get completed\n" \ | |
2040 | "\t-q Quiet. Don't display any stats at the end of the trace\n" \ | |
2041 | "\t-w Only parse data between the given time interval in seconds.\n" \ | |
2042 | "\t If 'start' isn't given, blkparse defaults the start time to 0\n" \ | |
d915dee6 JA |
2043 | "\t-f Output format. Customize the output format. The format field\n" \ |
2044 | "\t identifies can be found in the documentation\n" \ | |
52724a0e | 2045 | "\t-F Format specification. Can be found in the documentation\n" \ |
57ea8602 JA |
2046 | "\t-v More verbose for marginal errors\n" \ |
2047 | "\t-V Print program version info\n\n"; | |
52724a0e | 2048 | |
1f79c4a0 JA |
2049 | static void usage(char *prog) |
2050 | { | |
52724a0e | 2051 | fprintf(stderr, "Usage: %s %s %s", prog, blkparse_version, usage_str); |
1f79c4a0 JA |
2052 | } |
2053 | ||
d5396421 JA |
2054 | int main(int argc, char *argv[]) |
2055 | { | |
152f6476 | 2056 | char *ofp_buffer; |
98f8386b | 2057 | int i, c, ret, mode; |
98f8386b | 2058 | int act_mask_tmp = 0; |
d5396421 JA |
2059 | |
2060 | while ((c = getopt_long(argc, argv, S_OPTS, l_opts, NULL)) != -1) { | |
2061 | switch (c) { | |
98f8386b AB |
2062 | case 'a': |
2063 | i = find_mask_map(optarg); | |
2064 | if (i < 0) { | |
2065 | fprintf(stderr,"Invalid action mask %s\n", | |
2066 | optarg); | |
2067 | return 1; | |
2068 | } | |
2069 | act_mask_tmp |= i; | |
2070 | break; | |
2071 | ||
2072 | case 'A': | |
2073 | if ((sscanf(optarg, "%x", &i) != 1) || | |
2074 | !valid_act_opt(i)) { | |
2075 | fprintf(stderr, | |
2076 | "Invalid set action mask %s/0x%x\n", | |
2077 | optarg, i); | |
2078 | return 1; | |
2079 | } | |
2080 | act_mask_tmp = i; | |
2081 | break; | |
d5396421 | 2082 | case 'i': |
e7c9f3ff NS |
2083 | if (!strcmp(optarg, "-") && !pipeline) |
2084 | pipeline = 1; | |
2085 | else if (resize_devices(optarg) != 0) | |
2086 | return 1; | |
d5396421 | 2087 | break; |
d1d7f15f JA |
2088 | case 'D': |
2089 | input_dir = optarg; | |
2090 | break; | |
d5396421 | 2091 | case 'o': |
66efebf8 | 2092 | output_name = optarg; |
d5396421 | 2093 | break; |
79f19470 JA |
2094 | case 'b': |
2095 | rb_batch = atoi(optarg); | |
2096 | if (rb_batch <= 0) | |
2097 | rb_batch = RB_BATCH_DEFAULT; | |
2098 | break; | |
152f6476 JA |
2099 | case 's': |
2100 | per_process_stats = 1; | |
2101 | break; | |
7997c5b0 JA |
2102 | case 't': |
2103 | track_ios = 1; | |
2104 | break; | |
1e1c60f1 NS |
2105 | case 'q': |
2106 | per_device_and_cpu_stats = 0; | |
2107 | break; | |
46e6968b NS |
2108 | case 'w': |
2109 | if (find_stopwatch_interval(optarg) != 0) | |
2110 | return 1; | |
2111 | break; | |
ab197ca7 AB |
2112 | case 'f': |
2113 | set_all_format_specs(optarg); | |
2114 | break; | |
2115 | case 'F': | |
2116 | if (add_format_spec(optarg) != 0) | |
2117 | return 1; | |
2118 | break; | |
d915dee6 | 2119 | case 'h': |
715d8021 | 2120 | ppi_hash_by_pid = 0; |
bf0720af | 2121 | break; |
52724a0e | 2122 | case 'v': |
57ea8602 JA |
2123 | verbose++; |
2124 | break; | |
2125 | case 'V': | |
52724a0e JA |
2126 | printf("%s version %s\n", argv[0], blkparse_version); |
2127 | return 0; | |
d5396421 | 2128 | default: |
1f79c4a0 | 2129 | usage(argv[0]); |
d5396421 JA |
2130 | return 1; |
2131 | } | |
d0ca268b JA |
2132 | } |
2133 | ||
e7c9f3ff NS |
2134 | while (optind < argc) { |
2135 | if (!strcmp(argv[optind], "-") && !pipeline) | |
2136 | pipeline = 1; | |
2137 | else if (resize_devices(argv[optind]) != 0) | |
2138 | return 1; | |
2139 | optind++; | |
2140 | } | |
2141 | ||
2142 | if (!pipeline && !ndevices) { | |
1f79c4a0 | 2143 | usage(argv[0]); |
d5396421 JA |
2144 | return 1; |
2145 | } | |
2146 | ||
98f8386b AB |
2147 | if (act_mask_tmp != 0) |
2148 | act_mask = act_mask_tmp; | |
2149 | ||
7997c5b0 | 2150 | memset(&rb_sort_root, 0, sizeof(rb_sort_root)); |
412819ce JA |
2151 | |
2152 | signal(SIGINT, handle_sigint); | |
2153 | signal(SIGHUP, handle_sigint); | |
2154 | signal(SIGTERM, handle_sigint); | |
d5396421 | 2155 | |
d69db225 JA |
2156 | setlocale(LC_NUMERIC, "en_US"); |
2157 | ||
a66877e6 | 2158 | if (!output_name) { |
152f6476 | 2159 | ofp = fdopen(STDOUT_FILENO, "w"); |
a66877e6 JA |
2160 | mode = _IOLBF; |
2161 | } else { | |
152f6476 JA |
2162 | char ofname[128]; |
2163 | ||
7a9690c0 | 2164 | snprintf(ofname, sizeof(ofname) - 1, "%s", output_name); |
152f6476 | 2165 | ofp = fopen(ofname, "w"); |
a66877e6 | 2166 | mode = _IOFBF; |
152f6476 JA |
2167 | } |
2168 | ||
2169 | if (!ofp) { | |
2170 | perror("fopen"); | |
2171 | return 1; | |
2172 | } | |
2173 | ||
2174 | ofp_buffer = malloc(4096); | |
a66877e6 | 2175 | if (setvbuf(ofp, ofp_buffer, mode, 4096)) { |
152f6476 JA |
2176 | perror("setvbuf"); |
2177 | return 1; | |
2178 | } | |
2179 | ||
e7c9f3ff | 2180 | if (pipeline) |
d5396421 JA |
2181 | ret = do_stdin(); |
2182 | else | |
2183 | ret = do_file(); | |
2184 | ||
cbc927b6 | 2185 | show_stats(); |
eb9bd4e9 | 2186 | free(ofp_buffer); |
d5396421 | 2187 | return ret; |
d0ca268b | 2188 | } |