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 | |
a3225fed | 38 | static char blkparse_version[] = "0.99.1"; |
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; |
2990e589 JA |
55 | unsigned long skips; |
56 | unsigned long long seq_skips; | |
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 NS |
68 | struct per_cpu_info *cpus; |
69 | }; | |
70 | ||
2990e589 JA |
71 | /* |
72 | * some duplicated effort here, we can unify this hash and the ppi hash later | |
73 | */ | |
74 | struct process_pid_map { | |
75 | pid_t pid; | |
76 | char comm[16]; | |
77 | struct process_pid_map *hash_next, *list_next; | |
78 | }; | |
79 | ||
80 | #define PPM_HASH_SHIFT (8) | |
81 | #define PPM_HASH_SIZE (1 << PPM_HASH_SHIFT) | |
82 | #define PPM_HASH_MASK (PPM_HASH_SIZE - 1) | |
83 | static struct process_pid_map *ppm_hash_table[PPM_HASH_SIZE]; | |
84 | ||
152f6476 | 85 | struct per_process_info { |
2990e589 | 86 | struct process_pid_map *ppm; |
152f6476 JA |
87 | struct io_stats io_stats; |
88 | struct per_process_info *hash_next, *list_next; | |
715d8021 | 89 | int more_than_one; |
50adc0ba JA |
90 | |
91 | /* | |
92 | * individual io stats | |
93 | */ | |
b9d40d6f JA |
94 | unsigned long long longest_allocation_wait[2]; |
95 | unsigned long long longest_dispatch_wait[2]; | |
96 | unsigned long long longest_completion_wait[2]; | |
d0ca268b JA |
97 | }; |
98 | ||
152f6476 | 99 | #define PPI_HASH_SHIFT (8) |
bf0720af JA |
100 | #define PPI_HASH_SIZE (1 << PPI_HASH_SHIFT) |
101 | #define PPI_HASH_MASK (PPI_HASH_SIZE - 1) | |
102 | static struct per_process_info *ppi_hash_table[PPI_HASH_SIZE]; | |
152f6476 | 103 | static struct per_process_info *ppi_list; |
886ecf0e | 104 | static int ppi_list_entries; |
152f6476 | 105 | |
a2594911 | 106 | #define S_OPTS "a:A:i:o:b:stqw:f:F:vVhD:d:" |
d5396421 | 107 | static struct option l_opts[] = { |
98f8386b AB |
108 | { |
109 | .name = "act-mask", | |
110 | .has_arg = required_argument, | |
111 | .flag = NULL, | |
112 | .val = 'a' | |
113 | }, | |
114 | { | |
115 | .name = "set-mask", | |
116 | .has_arg = required_argument, | |
117 | .flag = NULL, | |
118 | .val = 'A' | |
119 | }, | |
d5396421 JA |
120 | { |
121 | .name = "input", | |
428683db | 122 | .has_arg = required_argument, |
d5396421 JA |
123 | .flag = NULL, |
124 | .val = 'i' | |
125 | }, | |
126 | { | |
127 | .name = "output", | |
428683db | 128 | .has_arg = required_argument, |
d5396421 JA |
129 | .flag = NULL, |
130 | .val = 'o' | |
131 | }, | |
79f19470 JA |
132 | { |
133 | .name = "batch", | |
428683db | 134 | .has_arg = required_argument, |
79f19470 JA |
135 | .flag = NULL, |
136 | .val = 'b' | |
137 | }, | |
152f6476 | 138 | { |
3f65c585 | 139 | .name = "per-program-stats", |
428683db | 140 | .has_arg = no_argument, |
152f6476 JA |
141 | .flag = NULL, |
142 | .val = 's' | |
143 | }, | |
7997c5b0 | 144 | { |
3f65c585 | 145 | .name = "track-ios", |
428683db | 146 | .has_arg = no_argument, |
7997c5b0 JA |
147 | .flag = NULL, |
148 | .val = 't' | |
149 | }, | |
1e1c60f1 NS |
150 | { |
151 | .name = "quiet", | |
428683db | 152 | .has_arg = no_argument, |
1e1c60f1 NS |
153 | .flag = NULL, |
154 | .val = 'q' | |
155 | }, | |
46e6968b NS |
156 | { |
157 | .name = "stopwatch", | |
428683db | 158 | .has_arg = required_argument, |
46e6968b NS |
159 | .flag = NULL, |
160 | .val = 'w' | |
161 | }, | |
ab197ca7 AB |
162 | { |
163 | .name = "format", | |
428683db | 164 | .has_arg = required_argument, |
ab197ca7 AB |
165 | .flag = NULL, |
166 | .val = 'f' | |
167 | }, | |
168 | { | |
169 | .name = "format-spec", | |
428683db | 170 | .has_arg = required_argument, |
ab197ca7 AB |
171 | .flag = NULL, |
172 | .val = 'F' | |
173 | }, | |
bf0720af | 174 | { |
3f65c585 | 175 | .name = "hash-by-name", |
bf0720af JA |
176 | .has_arg = no_argument, |
177 | .flag = NULL, | |
d915dee6 | 178 | .val = 'h' |
bf0720af | 179 | }, |
7d1c0411 | 180 | { |
57ea8602 | 181 | .name = "verbose", |
7d1c0411 JA |
182 | .has_arg = no_argument, |
183 | .flag = NULL, | |
57ea8602 | 184 | .val = 'v' |
7d1c0411 | 185 | }, |
52724a0e JA |
186 | { |
187 | .name = "version", | |
188 | .has_arg = no_argument, | |
189 | .flag = NULL, | |
57ea8602 | 190 | .val = 'V' |
52724a0e | 191 | }, |
d1d7f15f | 192 | { |
3f65c585 | 193 | .name = "input-directory", |
d1d7f15f JA |
194 | .has_arg = required_argument, |
195 | .flag = NULL, | |
196 | .val = 'D' | |
197 | }, | |
a2594911 AB |
198 | { |
199 | .name = "dump-binary", | |
200 | .has_arg = required_argument, | |
201 | .flag = NULL, | |
202 | .val = 'd' | |
203 | }, | |
71ef8b7c JA |
204 | { |
205 | .name = NULL, | |
206 | } | |
d5396421 JA |
207 | }; |
208 | ||
7997c5b0 JA |
209 | /* |
210 | * for sorting the displayed output | |
211 | */ | |
8fc0abbc JA |
212 | struct trace { |
213 | struct blk_io_trace *bit; | |
214 | struct rb_node rb_node; | |
cb2a1a62 | 215 | struct trace *next; |
a43c1c17 | 216 | unsigned long read_sequence; |
8fc0abbc JA |
217 | }; |
218 | ||
cb2a1a62 | 219 | static struct rb_root rb_sort_root; |
a649216c JA |
220 | static unsigned long rb_sort_entries; |
221 | ||
cb2a1a62 JA |
222 | static struct trace *trace_list; |
223 | ||
d36421e4 JA |
224 | /* |
225 | * allocation cache | |
226 | */ | |
227 | static struct blk_io_trace *bit_alloc_list; | |
228 | static struct trace *t_alloc_list; | |
229 | ||
7997c5b0 JA |
230 | /* |
231 | * for tracking individual ios | |
232 | */ | |
233 | struct io_track { | |
234 | struct rb_node rb_node; | |
235 | ||
2990e589 | 236 | struct process_pid_map *ppm; |
7997c5b0 | 237 | __u64 sector; |
95c15013 | 238 | unsigned long long allocation_time; |
7997c5b0 JA |
239 | unsigned long long queue_time; |
240 | unsigned long long dispatch_time; | |
241 | unsigned long long completion_time; | |
242 | }; | |
243 | ||
e7c9f3ff NS |
244 | static int ndevices; |
245 | static struct per_dev_info *devices; | |
246 | static char *get_dev_name(struct per_dev_info *, char *, int); | |
210824c3 | 247 | static int trace_rb_insert_last(struct per_dev_info *, struct trace *); |
d0ca268b | 248 | |
71d5d4c9 | 249 | FILE *ofp = NULL; |
e7c9f3ff | 250 | static char *output_name; |
d1d7f15f | 251 | static char *input_dir; |
e7c9f3ff NS |
252 | |
253 | static unsigned long long genesis_time; | |
287fa3d6 | 254 | static unsigned long long last_allowed_time; |
46e6968b | 255 | static unsigned long long stopwatch_start; /* start from zero by default */ |
bc171579 | 256 | static unsigned long long stopwatch_end = -1ULL; /* "infinity" */ |
a43c1c17 | 257 | static unsigned long read_sequence; |
152f6476 JA |
258 | |
259 | static int per_process_stats; | |
cbc927b6 | 260 | static int per_device_and_cpu_stats = 1; |
7997c5b0 | 261 | static int track_ios; |
bf0720af | 262 | static int ppi_hash_by_pid = 1; |
57ea8602 | 263 | static int verbose; |
98f8386b | 264 | static unsigned int act_mask = -1U; |
cbc927b6 | 265 | static int stats_printed; |
86368eb5 | 266 | int data_is_native = -1; |
d0ca268b | 267 | |
a2594911 AB |
268 | static int dump_fd; |
269 | static char *dump_binary; | |
270 | ||
1d24fc14 JA |
271 | static unsigned int t_alloc_cache; |
272 | static unsigned int bit_alloc_cache; | |
273 | ||
7d747d22 | 274 | #define RB_BATCH_DEFAULT (512) |
e820abd7 | 275 | static unsigned int rb_batch = RB_BATCH_DEFAULT; |
79f19470 | 276 | |
e7c9f3ff NS |
277 | static int pipeline; |
278 | ||
412819ce JA |
279 | #define is_done() (*(volatile int *)(&done)) |
280 | static volatile int done; | |
281 | ||
bf0720af JA |
282 | #define JHASH_RANDOM (0x3af5f2ee) |
283 | ||
824c2b39 JA |
284 | #define CPUS_PER_LONG (8 * sizeof(unsigned long)) |
285 | #define CPU_IDX(cpu) ((cpu) / CPUS_PER_LONG) | |
286 | #define CPU_BIT(cpu) ((cpu) & (CPUS_PER_LONG - 1)) | |
287 | ||
a2594911 AB |
288 | static void output_binary(void *buf, int len) |
289 | { | |
290 | if (dump_binary) { | |
291 | int n = write(dump_fd, buf, len); | |
292 | if (n != len) { | |
293 | perror(dump_binary); | |
294 | close(dump_fd); | |
295 | dump_binary = NULL; | |
296 | } | |
297 | } | |
298 | } | |
299 | ||
210824c3 JA |
300 | static void resize_cpu_info(struct per_dev_info *pdi, int cpu) |
301 | { | |
302 | struct per_cpu_info *cpus = pdi->cpus; | |
303 | int ncpus = pdi->ncpus; | |
304 | int new_count = cpu + 1; | |
305 | int new_space, size; | |
306 | char *new_start; | |
307 | ||
308 | size = new_count * sizeof(struct per_cpu_info); | |
309 | cpus = realloc(cpus, size); | |
310 | if (!cpus) { | |
311 | char name[20]; | |
312 | fprintf(stderr, "Out of memory, CPU info for device %s (%d)\n", | |
313 | get_dev_name(pdi, name, sizeof(name)), size); | |
314 | exit(1); | |
315 | } | |
316 | ||
317 | new_start = (char *)cpus + (ncpus * sizeof(struct per_cpu_info)); | |
318 | new_space = (new_count - ncpus) * sizeof(struct per_cpu_info); | |
319 | memset(new_start, 0, new_space); | |
320 | ||
321 | pdi->ncpus = new_count; | |
322 | pdi->cpus = cpus; | |
323 | ||
324 | for (new_count = 0; new_count < pdi->ncpus; new_count++) { | |
325 | struct per_cpu_info *pci = &pdi->cpus[new_count]; | |
326 | ||
327 | if (!pci->fd) { | |
328 | pci->fd = -1; | |
329 | memset(&pci->rb_last, 0, sizeof(pci->rb_last)); | |
330 | pci->rb_last_entries = 0; | |
331 | pci->last_sequence = -1; | |
332 | } | |
333 | } | |
334 | } | |
335 | ||
336 | static struct per_cpu_info *get_cpu_info(struct per_dev_info *pdi, int cpu) | |
337 | { | |
338 | struct per_cpu_info *pci; | |
339 | ||
340 | if (cpu >= pdi->ncpus) | |
341 | resize_cpu_info(pdi, cpu); | |
342 | ||
343 | pci = &pdi->cpus[cpu]; | |
344 | pci->cpu = cpu; | |
345 | return pci; | |
346 | } | |
347 | ||
348 | ||
349 | static int resize_devices(char *name) | |
350 | { | |
351 | int size = (ndevices + 1) * sizeof(struct per_dev_info); | |
352 | ||
353 | devices = realloc(devices, size); | |
354 | if (!devices) { | |
355 | fprintf(stderr, "Out of memory, device %s (%d)\n", name, size); | |
356 | return 1; | |
357 | } | |
358 | memset(&devices[ndevices], 0, sizeof(struct per_dev_info)); | |
359 | devices[ndevices].name = name; | |
360 | ndevices++; | |
361 | return 0; | |
362 | } | |
363 | ||
364 | static struct per_dev_info *get_dev_info(dev_t dev) | |
365 | { | |
366 | struct per_dev_info *pdi; | |
367 | int i; | |
368 | ||
369 | for (i = 0; i < ndevices; i++) { | |
370 | if (!devices[i].dev) | |
371 | devices[i].dev = dev; | |
372 | if (devices[i].dev == dev) | |
373 | return &devices[i]; | |
374 | } | |
375 | ||
376 | if (resize_devices(NULL)) | |
377 | return NULL; | |
378 | ||
379 | pdi = &devices[ndevices - 1]; | |
380 | pdi->dev = dev; | |
381 | pdi->first_reported_time = 0; | |
382 | pdi->last_read_time = 0; | |
210824c3 JA |
383 | |
384 | return pdi; | |
385 | } | |
386 | ||
66930177 | 387 | static void insert_skip(struct per_cpu_info *pci, unsigned long start, |
492da111 AB |
388 | unsigned long end) |
389 | { | |
390 | struct skip_info *sip; | |
391 | ||
66930177 | 392 | for (sip = pci->skips_tail; sip != NULL; sip = sip->prev) { |
492da111 AB |
393 | if (end == (sip->start - 1)) { |
394 | sip->start = start; | |
395 | return; | |
396 | } else if (start == (sip->end + 1)) { | |
397 | sip->end = end; | |
398 | return; | |
399 | } | |
400 | } | |
401 | ||
402 | sip = malloc(sizeof(struct skip_info)); | |
403 | sip->start = start; | |
404 | sip->end = end; | |
405 | sip->prev = sip->next = NULL; | |
66930177 JA |
406 | if (pci->skips_tail == NULL) |
407 | pci->skips_head = pci->skips_tail = sip; | |
492da111 | 408 | else { |
66930177 JA |
409 | sip->prev = pci->skips_tail; |
410 | pci->skips_tail->next = sip; | |
411 | pci->skips_tail = sip; | |
492da111 AB |
412 | } |
413 | } | |
414 | ||
66930177 | 415 | static void remove_sip(struct per_cpu_info *pci, struct skip_info *sip) |
492da111 AB |
416 | { |
417 | if (sip->prev == NULL) { | |
418 | if (sip->next == NULL) | |
66930177 | 419 | pci->skips_head = pci->skips_tail = NULL; |
492da111 | 420 | else { |
66930177 | 421 | pci->skips_head = sip->next; |
492da111 AB |
422 | sip->next->prev = NULL; |
423 | } | |
424 | } else if (sip->next == NULL) { | |
66930177 | 425 | pci->skips_tail = sip->prev; |
492da111 AB |
426 | sip->prev->next = NULL; |
427 | } else { | |
428 | sip->prev->next = sip->next; | |
429 | sip->next->prev = sip->prev; | |
430 | } | |
431 | ||
432 | sip->prev = sip->next = NULL; | |
433 | free(sip); | |
434 | } | |
435 | ||
436 | #define IN_SKIP(sip,seq) (((sip)->start <= (seq)) && ((seq) <= sip->end)) | |
66930177 | 437 | static int check_current_skips(struct per_cpu_info *pci, unsigned long seq) |
492da111 AB |
438 | { |
439 | struct skip_info *sip; | |
440 | ||
66930177 JA |
441 | for (sip = pci->skips_tail; sip != NULL; sip = sip->prev) { |
442 | if (IN_SKIP(sip, seq)) { | |
492da111 AB |
443 | if (sip->start == seq) { |
444 | if (sip->end == seq) | |
66930177 | 445 | remove_sip(pci, sip); |
492da111 AB |
446 | else |
447 | sip->start += 1; | |
448 | } else if (sip->end == seq) | |
449 | sip->end -= 1; | |
450 | else { | |
451 | sip->end = seq - 1; | |
66930177 | 452 | insert_skip(pci, seq + 1, sip->end); |
492da111 AB |
453 | } |
454 | return 1; | |
455 | } | |
456 | } | |
66930177 | 457 | |
492da111 AB |
458 | return 0; |
459 | } | |
460 | ||
461 | static void collect_pdi_skips(struct per_dev_info *pdi) | |
462 | { | |
463 | struct skip_info *sip; | |
66930177 | 464 | int cpu; |
492da111 AB |
465 | |
466 | pdi->skips = 0; | |
467 | pdi->seq_skips = 0; | |
66930177 JA |
468 | |
469 | for (cpu = 0; cpu < pdi->ncpus; cpu++) { | |
470 | struct per_cpu_info *pci = &pdi->cpus[cpu]; | |
471 | ||
472 | for (sip = pci->skips_head; sip != NULL; sip = sip->next) { | |
473 | pdi->skips++; | |
474 | pdi->seq_skips += (sip->end - sip->start + 1); | |
475 | if (verbose) | |
476 | fprintf(stderr,"(%d,%d): skipping %lu -> %lu\n", | |
477 | MAJOR(pdi->dev), MINOR(pdi->dev), | |
478 | sip->start, sip->end); | |
479 | } | |
492da111 AB |
480 | } |
481 | } | |
482 | ||
824c2b39 JA |
483 | static void cpu_mark_online(struct per_dev_info *pdi, unsigned int cpu) |
484 | { | |
485 | if (cpu >= pdi->cpu_map_max || !pdi->cpu_map) { | |
486 | int new_max = (cpu + CPUS_PER_LONG) & ~(CPUS_PER_LONG - 1); | |
487 | unsigned long *map = malloc(new_max / sizeof(long)); | |
488 | ||
489 | memset(map, 0, new_max / sizeof(long)); | |
490 | ||
491 | if (pdi->cpu_map) { | |
492 | memcpy(map, pdi->cpu_map, pdi->cpu_map_max / sizeof(long)); | |
493 | free(pdi->cpu_map); | |
494 | } | |
495 | ||
496 | pdi->cpu_map = map; | |
497 | pdi->cpu_map_max = new_max; | |
498 | } | |
499 | ||
500 | pdi->cpu_map[CPU_IDX(cpu)] |= (1UL << CPU_BIT(cpu)); | |
501 | } | |
502 | ||
503 | static inline void cpu_mark_offline(struct per_dev_info *pdi, int cpu) | |
504 | { | |
505 | pdi->cpu_map[CPU_IDX(cpu)] &= ~(1UL << CPU_BIT(cpu)); | |
506 | } | |
507 | ||
508 | static inline int cpu_is_online(struct per_dev_info *pdi, int cpu) | |
509 | { | |
510 | return (pdi->cpu_map[CPU_IDX(cpu)] & (1UL << CPU_BIT(cpu))) != 0; | |
511 | } | |
512 | ||
bfc70ad5 JA |
513 | static inline int ppm_hash_pid(pid_t pid) |
514 | { | |
515 | return jhash_1word(pid, JHASH_RANDOM) & PPM_HASH_MASK; | |
516 | } | |
517 | ||
518 | static struct process_pid_map *find_ppm(pid_t pid) | |
519 | { | |
520 | const int hash_idx = ppm_hash_pid(pid); | |
521 | struct process_pid_map *ppm; | |
522 | ||
523 | ppm = ppm_hash_table[hash_idx]; | |
524 | while (ppm) { | |
525 | if (ppm->pid == pid) | |
526 | return ppm; | |
527 | ||
528 | ppm = ppm->hash_next; | |
529 | } | |
530 | ||
531 | return NULL; | |
532 | } | |
533 | ||
534 | static void add_ppm_hash(pid_t pid, const char *name) | |
535 | { | |
536 | const int hash_idx = ppm_hash_pid(pid); | |
537 | struct process_pid_map *ppm; | |
538 | ||
539 | ppm = find_ppm(pid); | |
248eac8f JA |
540 | if (!ppm) { |
541 | ppm = malloc(sizeof(*ppm)); | |
542 | memset(ppm, 0, sizeof(*ppm)); | |
543 | ppm->pid = pid; | |
544 | strcpy(ppm->comm, name); | |
545 | ppm->hash_next = ppm_hash_table[hash_idx]; | |
546 | ppm_hash_table[hash_idx] = ppm; | |
bfc70ad5 | 547 | } |
bfc70ad5 JA |
548 | } |
549 | ||
550 | char *find_process_name(pid_t pid) | |
551 | { | |
552 | struct process_pid_map *ppm = find_ppm(pid); | |
553 | ||
554 | if (ppm) | |
555 | return ppm->comm; | |
556 | ||
557 | return NULL; | |
558 | } | |
559 | ||
9e4cd1b8 | 560 | static inline int ppi_hash_pid(pid_t pid) |
bf0720af JA |
561 | { |
562 | return jhash_1word(pid, JHASH_RANDOM) & PPI_HASH_MASK; | |
563 | } | |
564 | ||
565 | static inline int ppi_hash_name(const char *name) | |
152f6476 | 566 | { |
bf0720af JA |
567 | return jhash(name, 16, JHASH_RANDOM) & PPI_HASH_MASK; |
568 | } | |
569 | ||
570 | static inline int ppi_hash(struct per_process_info *ppi) | |
571 | { | |
2990e589 JA |
572 | struct process_pid_map *ppm = ppi->ppm; |
573 | ||
bf0720af | 574 | if (ppi_hash_by_pid) |
2990e589 | 575 | return ppi_hash_pid(ppm->pid); |
bf0720af | 576 | |
2990e589 | 577 | return ppi_hash_name(ppm->comm); |
152f6476 JA |
578 | } |
579 | ||
bfc70ad5 | 580 | static inline void add_ppi_to_hash(struct per_process_info *ppi) |
152f6476 | 581 | { |
bf0720af | 582 | const int hash_idx = ppi_hash(ppi); |
152f6476 | 583 | |
bf0720af JA |
584 | ppi->hash_next = ppi_hash_table[hash_idx]; |
585 | ppi_hash_table[hash_idx] = ppi; | |
152f6476 JA |
586 | } |
587 | ||
bfc70ad5 | 588 | static inline void add_ppi_to_list(struct per_process_info *ppi) |
152f6476 JA |
589 | { |
590 | ppi->list_next = ppi_list; | |
591 | ppi_list = ppi; | |
886ecf0e | 592 | ppi_list_entries++; |
152f6476 JA |
593 | } |
594 | ||
bfc70ad5 | 595 | static struct per_process_info *find_ppi_by_name(char *name) |
bf0720af JA |
596 | { |
597 | const int hash_idx = ppi_hash_name(name); | |
598 | struct per_process_info *ppi; | |
599 | ||
600 | ppi = ppi_hash_table[hash_idx]; | |
601 | while (ppi) { | |
2990e589 JA |
602 | struct process_pid_map *ppm = ppi->ppm; |
603 | ||
604 | if (!strcmp(ppm->comm, name)) | |
bf0720af JA |
605 | return ppi; |
606 | ||
607 | ppi = ppi->hash_next; | |
608 | } | |
609 | ||
610 | return NULL; | |
611 | } | |
612 | ||
9e4cd1b8 | 613 | static struct per_process_info *find_ppi_by_pid(pid_t pid) |
152f6476 | 614 | { |
bf0720af | 615 | const int hash_idx = ppi_hash_pid(pid); |
152f6476 JA |
616 | struct per_process_info *ppi; |
617 | ||
bf0720af | 618 | ppi = ppi_hash_table[hash_idx]; |
152f6476 | 619 | while (ppi) { |
2990e589 JA |
620 | struct process_pid_map *ppm = ppi->ppm; |
621 | ||
622 | if (ppm->pid == pid) | |
152f6476 JA |
623 | return ppi; |
624 | ||
625 | ppi = ppi->hash_next; | |
626 | } | |
627 | ||
628 | return NULL; | |
629 | } | |
630 | ||
9e4cd1b8 | 631 | static struct per_process_info *find_ppi(pid_t pid) |
bf0720af | 632 | { |
715d8021 | 633 | struct per_process_info *ppi; |
bfc70ad5 | 634 | char *name; |
715d8021 | 635 | |
bf0720af | 636 | if (ppi_hash_by_pid) |
bfc70ad5 JA |
637 | return find_ppi_by_pid(pid); |
638 | ||
639 | name = find_process_name(pid); | |
640 | if (!name) | |
641 | return NULL; | |
bf0720af | 642 | |
bfc70ad5 | 643 | ppi = find_ppi_by_name(name); |
2990e589 | 644 | if (ppi && ppi->ppm->pid != pid) |
715d8021 JA |
645 | ppi->more_than_one = 1; |
646 | ||
647 | return ppi; | |
bf0720af JA |
648 | } |
649 | ||
210824c3 JA |
650 | /* |
651 | * struct trace and blktrace allocation cache, we do potentially | |
652 | * millions of mallocs for these structures while only using at most | |
653 | * a few thousand at the time | |
654 | */ | |
655 | static inline void t_free(struct trace *t) | |
656 | { | |
657 | if (t_alloc_cache < 1024) { | |
658 | t->next = t_alloc_list; | |
659 | t_alloc_list = t; | |
660 | t_alloc_cache++; | |
661 | } else | |
662 | free(t); | |
663 | } | |
664 | ||
665 | static inline struct trace *t_alloc(void) | |
666 | { | |
667 | struct trace *t = t_alloc_list; | |
668 | ||
669 | if (t) { | |
670 | t_alloc_list = t->next; | |
671 | t_alloc_cache--; | |
672 | return t; | |
673 | } | |
674 | ||
675 | return malloc(sizeof(*t)); | |
676 | } | |
677 | ||
678 | static inline void bit_free(struct blk_io_trace *bit) | |
679 | { | |
680 | if (bit_alloc_cache < 1024 && !bit->pdu_len) { | |
681 | /* | |
682 | * abuse a 64-bit field for a next pointer for the free item | |
683 | */ | |
684 | bit->time = (__u64) (unsigned long) bit_alloc_list; | |
685 | bit_alloc_list = (struct blk_io_trace *) bit; | |
686 | bit_alloc_cache++; | |
687 | } else | |
688 | free(bit); | |
689 | } | |
690 | ||
691 | static inline struct blk_io_trace *bit_alloc(void) | |
692 | { | |
693 | struct blk_io_trace *bit = bit_alloc_list; | |
694 | ||
695 | if (bit) { | |
696 | bit_alloc_list = (struct blk_io_trace *) (unsigned long) \ | |
697 | bit->time; | |
698 | bit_alloc_cache--; | |
699 | return bit; | |
700 | } | |
701 | ||
702 | return malloc(sizeof(*bit)); | |
703 | } | |
704 | ||
705 | static inline void __put_trace_last(struct per_dev_info *pdi, struct trace *t) | |
706 | { | |
707 | struct per_cpu_info *pci = get_cpu_info(pdi, t->bit->cpu); | |
708 | ||
709 | rb_erase(&t->rb_node, &pci->rb_last); | |
710 | pci->rb_last_entries--; | |
711 | ||
712 | bit_free(t->bit); | |
713 | t_free(t); | |
714 | } | |
715 | ||
716 | static void put_trace(struct per_dev_info *pdi, struct trace *t) | |
717 | { | |
718 | rb_erase(&t->rb_node, &rb_sort_root); | |
719 | rb_sort_entries--; | |
720 | ||
721 | trace_rb_insert_last(pdi, t); | |
722 | } | |
723 | ||
89482da6 | 724 | static inline int trace_rb_insert(struct trace *t, struct rb_root *root) |
7997c5b0 | 725 | { |
2a1b3424 | 726 | struct rb_node **p = &root->rb_node; |
7997c5b0 JA |
727 | struct rb_node *parent = NULL; |
728 | struct trace *__t; | |
729 | ||
730 | while (*p) { | |
731 | parent = *p; | |
2a1b3424 | 732 | |
7997c5b0 JA |
733 | __t = rb_entry(parent, struct trace, rb_node); |
734 | ||
89482da6 JA |
735 | if (t->bit->time < __t->bit->time) |
736 | p = &(*p)->rb_left; | |
737 | else if (t->bit->time > __t->bit->time) | |
738 | p = &(*p)->rb_right; | |
739 | else if (t->bit->device < __t->bit->device) | |
e7c9f3ff NS |
740 | p = &(*p)->rb_left; |
741 | else if (t->bit->device > __t->bit->device) | |
742 | p = &(*p)->rb_right; | |
dcf0f7ed JA |
743 | else if (t->bit->sequence < __t->bit->sequence) |
744 | p = &(*p)->rb_left; | |
0b07f23e | 745 | else /* >= sequence */ |
dcf0f7ed | 746 | p = &(*p)->rb_right; |
7997c5b0 JA |
747 | } |
748 | ||
749 | rb_link_node(&t->rb_node, parent, p); | |
2a1b3424 | 750 | rb_insert_color(&t->rb_node, root); |
7997c5b0 JA |
751 | return 0; |
752 | } | |
753 | ||
2a1b3424 | 754 | static inline int trace_rb_insert_sort(struct trace *t) |
e3556946 | 755 | { |
89482da6 | 756 | if (!trace_rb_insert(t, &rb_sort_root)) { |
2a1b3424 JA |
757 | rb_sort_entries++; |
758 | return 0; | |
759 | } | |
760 | ||
761 | return 1; | |
762 | } | |
763 | ||
210824c3 | 764 | static int trace_rb_insert_last(struct per_dev_info *pdi, struct trace *t) |
2a1b3424 | 765 | { |
210824c3 JA |
766 | struct per_cpu_info *pci = get_cpu_info(pdi, t->bit->cpu); |
767 | ||
768 | if (trace_rb_insert(t, &pci->rb_last)) | |
769 | return 1; | |
770 | ||
771 | pci->rb_last_entries++; | |
772 | ||
773 | if (pci->rb_last_entries > rb_batch * pdi->nfiles) { | |
774 | struct rb_node *n = rb_first(&pci->rb_last); | |
775 | ||
776 | t = rb_entry(n, struct trace, rb_node); | |
777 | __put_trace_last(pdi, t); | |
2a1b3424 JA |
778 | } |
779 | ||
210824c3 | 780 | return 0; |
2a1b3424 JA |
781 | } |
782 | ||
783 | static struct trace *trace_rb_find(dev_t device, unsigned long sequence, | |
784 | struct rb_root *root, int order) | |
785 | { | |
786 | struct rb_node *n = root->rb_node; | |
787 | struct rb_node *prev = NULL; | |
e3556946 JA |
788 | struct trace *__t; |
789 | ||
2a1b3424 JA |
790 | while (n) { |
791 | __t = rb_entry(n, struct trace, rb_node); | |
792 | prev = n; | |
e3556946 | 793 | |
0583b6a2 | 794 | if (device < __t->bit->device) |
2a1b3424 | 795 | n = n->rb_left; |
0583b6a2 | 796 | else if (device > __t->bit->device) |
2a1b3424 | 797 | n = n->rb_right; |
0583b6a2 | 798 | else if (sequence < __t->bit->sequence) |
2a1b3424 | 799 | n = n->rb_left; |
e3556946 | 800 | else if (sequence > __t->bit->sequence) |
2a1b3424 | 801 | n = n->rb_right; |
e3556946 JA |
802 | else |
803 | return __t; | |
804 | } | |
805 | ||
2a1b3424 JA |
806 | /* |
807 | * hack - the list may not be sequence ordered because some | |
808 | * events don't have sequence and time matched. so we end up | |
809 | * being a little off in the rb lookup here, because we don't | |
810 | * know the time we are looking for. compensate by browsing | |
811 | * a little ahead from the last entry to find the match | |
812 | */ | |
813 | if (order && prev) { | |
814 | int max = 5; | |
815 | ||
816 | while (((n = rb_next(prev)) != NULL) && max--) { | |
817 | __t = rb_entry(n, struct trace, rb_node); | |
492da111 | 818 | |
2a1b3424 JA |
819 | if (__t->bit->device == device && |
820 | __t->bit->sequence == sequence) | |
821 | return __t; | |
822 | ||
823 | prev = n; | |
824 | } | |
825 | } | |
492da111 | 826 | |
e3556946 JA |
827 | return NULL; |
828 | } | |
829 | ||
2a1b3424 | 830 | static inline struct trace *trace_rb_find_last(struct per_dev_info *pdi, |
210824c3 | 831 | struct per_cpu_info *pci, |
2a1b3424 JA |
832 | unsigned long seq) |
833 | { | |
210824c3 | 834 | return trace_rb_find(pdi->dev, seq, &pci->rb_last, 0); |
2a1b3424 JA |
835 | } |
836 | ||
f7bd1a9b | 837 | static inline int track_rb_insert(struct per_dev_info *pdi,struct io_track *iot) |
7997c5b0 | 838 | { |
f7bd1a9b | 839 | struct rb_node **p = &pdi->rb_track.rb_node; |
7997c5b0 JA |
840 | struct rb_node *parent = NULL; |
841 | struct io_track *__iot; | |
842 | ||
843 | while (*p) { | |
844 | parent = *p; | |
7997c5b0 JA |
845 | __iot = rb_entry(parent, struct io_track, rb_node); |
846 | ||
f7bd1a9b | 847 | if (iot->sector < __iot->sector) |
7997c5b0 JA |
848 | p = &(*p)->rb_left; |
849 | else if (iot->sector > __iot->sector) | |
850 | p = &(*p)->rb_right; | |
851 | else { | |
e7c9f3ff | 852 | fprintf(stderr, |
ab197ca7 AB |
853 | "sector alias (%Lu) on device %d,%d!\n", |
854 | (unsigned long long) iot->sector, | |
f7bd1a9b | 855 | MAJOR(pdi->dev), MINOR(pdi->dev)); |
7997c5b0 JA |
856 | return 1; |
857 | } | |
858 | } | |
859 | ||
860 | rb_link_node(&iot->rb_node, parent, p); | |
f7bd1a9b | 861 | rb_insert_color(&iot->rb_node, &pdi->rb_track); |
7997c5b0 JA |
862 | return 0; |
863 | } | |
864 | ||
f7bd1a9b | 865 | static struct io_track *__find_track(struct per_dev_info *pdi, __u64 sector) |
7997c5b0 | 866 | { |
f7bd1a9b | 867 | struct rb_node *n = pdi->rb_track.rb_node; |
7997c5b0 JA |
868 | struct io_track *__iot; |
869 | ||
2a1b3424 JA |
870 | while (n) { |
871 | __iot = rb_entry(n, struct io_track, rb_node); | |
7997c5b0 | 872 | |
f7bd1a9b | 873 | if (sector < __iot->sector) |
2a1b3424 | 874 | n = n->rb_left; |
7997c5b0 | 875 | else if (sector > __iot->sector) |
2a1b3424 | 876 | n = n->rb_right; |
7997c5b0 JA |
877 | else |
878 | return __iot; | |
879 | } | |
880 | ||
881 | return NULL; | |
882 | } | |
883 | ||
9e4cd1b8 | 884 | static struct io_track *find_track(struct per_dev_info *pdi, pid_t pid, |
bfc70ad5 | 885 | __u64 sector) |
7997c5b0 | 886 | { |
916b5501 | 887 | struct io_track *iot; |
7997c5b0 | 888 | |
f7bd1a9b | 889 | iot = __find_track(pdi, sector); |
7997c5b0 JA |
890 | if (!iot) { |
891 | iot = malloc(sizeof(*iot)); | |
2990e589 | 892 | iot->ppm = find_ppm(pid); |
7997c5b0 | 893 | iot->sector = sector; |
f7bd1a9b | 894 | track_rb_insert(pdi, iot); |
7997c5b0 JA |
895 | } |
896 | ||
897 | return iot; | |
898 | } | |
899 | ||
f7bd1a9b JA |
900 | static void log_track_frontmerge(struct per_dev_info *pdi, |
901 | struct blk_io_trace *t) | |
2e3e8ded JA |
902 | { |
903 | struct io_track *iot; | |
904 | ||
905 | if (!track_ios) | |
906 | return; | |
2e3e8ded | 907 | |
ae957cbc | 908 | iot = __find_track(pdi, t->sector + t_sec(t)); |
cb2a1a62 | 909 | if (!iot) { |
57ea8602 JA |
910 | if (verbose) |
911 | fprintf(stderr, "merge not found for (%d,%d): %llu\n", | |
912 | MAJOR(pdi->dev), MINOR(pdi->dev), | |
913 | (unsigned long long) t->sector + t_sec(t)); | |
cb2a1a62 | 914 | return; |
2e3e8ded | 915 | } |
cb2a1a62 | 916 | |
f7bd1a9b | 917 | rb_erase(&iot->rb_node, &pdi->rb_track); |
ae957cbc | 918 | iot->sector -= t_sec(t); |
f7bd1a9b | 919 | track_rb_insert(pdi, iot); |
2e3e8ded JA |
920 | } |
921 | ||
f7bd1a9b | 922 | static void log_track_getrq(struct per_dev_info *pdi, struct blk_io_trace *t) |
2e3e8ded JA |
923 | { |
924 | struct io_track *iot; | |
925 | ||
926 | if (!track_ios) | |
927 | return; | |
928 | ||
bfc70ad5 | 929 | iot = find_track(pdi, t->pid, t->sector); |
95c15013 JA |
930 | iot->allocation_time = t->time; |
931 | } | |
932 | ||
753f9091 JA |
933 | static inline int is_remapper(struct per_dev_info *pdi) |
934 | { | |
935 | int major = MAJOR(pdi->dev); | |
936 | ||
937 | return (major == 253 || major == 9); | |
938 | } | |
939 | ||
940 | /* | |
941 | * for md/dm setups, the interesting cycle is Q -> C. So track queueing | |
942 | * time here, as dispatch time | |
943 | */ | |
944 | static void log_track_queue(struct per_dev_info *pdi, struct blk_io_trace *t) | |
945 | { | |
946 | struct io_track *iot; | |
947 | ||
948 | if (!track_ios) | |
949 | return; | |
950 | if (!is_remapper(pdi)) | |
951 | return; | |
952 | ||
bfc70ad5 | 953 | iot = find_track(pdi, t->pid, t->sector); |
753f9091 JA |
954 | iot->dispatch_time = t->time; |
955 | } | |
956 | ||
95c15013 | 957 | /* |
b6076a9b | 958 | * return time between rq allocation and insertion |
95c15013 | 959 | */ |
f7bd1a9b JA |
960 | static unsigned long long log_track_insert(struct per_dev_info *pdi, |
961 | struct blk_io_trace *t) | |
95c15013 | 962 | { |
50adc0ba | 963 | unsigned long long elapsed; |
95c15013 JA |
964 | struct io_track *iot; |
965 | ||
966 | if (!track_ios) | |
967 | return -1; | |
968 | ||
bfc70ad5 | 969 | iot = find_track(pdi, t->pid, t->sector); |
2e3e8ded | 970 | iot->queue_time = t->time; |
acd70d21 JA |
971 | |
972 | if (!iot->allocation_time) | |
973 | return -1; | |
974 | ||
50adc0ba JA |
975 | elapsed = iot->queue_time - iot->allocation_time; |
976 | ||
977 | if (per_process_stats) { | |
2990e589 | 978 | struct per_process_info *ppi = find_ppi(iot->ppm->pid); |
b9d40d6f | 979 | int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
50adc0ba | 980 | |
b9d40d6f JA |
981 | if (ppi && elapsed > ppi->longest_allocation_wait[w]) |
982 | ppi->longest_allocation_wait[w] = elapsed; | |
50adc0ba JA |
983 | } |
984 | ||
985 | return elapsed; | |
2e3e8ded JA |
986 | } |
987 | ||
988 | /* | |
989 | * return time between queue and issue | |
990 | */ | |
f7bd1a9b JA |
991 | static unsigned long long log_track_issue(struct per_dev_info *pdi, |
992 | struct blk_io_trace *t) | |
2e3e8ded | 993 | { |
50adc0ba | 994 | unsigned long long elapsed; |
2e3e8ded JA |
995 | struct io_track *iot; |
996 | ||
997 | if (!track_ios) | |
998 | return -1; | |
999 | if ((t->action & BLK_TC_ACT(BLK_TC_FS)) == 0) | |
1000 | return -1; | |
1001 | ||
f7bd1a9b | 1002 | iot = __find_track(pdi, t->sector); |
cb2a1a62 | 1003 | if (!iot) { |
57ea8602 JA |
1004 | if (verbose) |
1005 | fprintf(stderr, "issue not found for (%d,%d): %llu\n", | |
1006 | MAJOR(pdi->dev), MINOR(pdi->dev), | |
1007 | (unsigned long long) t->sector); | |
2e3e8ded | 1008 | return -1; |
cb2a1a62 | 1009 | } |
2e3e8ded JA |
1010 | |
1011 | iot->dispatch_time = t->time; | |
50adc0ba JA |
1012 | elapsed = iot->dispatch_time - iot->queue_time; |
1013 | ||
1014 | if (per_process_stats) { | |
2990e589 | 1015 | struct per_process_info *ppi = find_ppi(iot->ppm->pid); |
b9d40d6f | 1016 | int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
50adc0ba | 1017 | |
b9d40d6f JA |
1018 | if (ppi && elapsed > ppi->longest_dispatch_wait[w]) |
1019 | ppi->longest_dispatch_wait[w] = elapsed; | |
50adc0ba JA |
1020 | } |
1021 | ||
1022 | return elapsed; | |
2e3e8ded JA |
1023 | } |
1024 | ||
1025 | /* | |
1026 | * return time between dispatch and complete | |
1027 | */ | |
f7bd1a9b JA |
1028 | static unsigned long long log_track_complete(struct per_dev_info *pdi, |
1029 | struct blk_io_trace *t) | |
2e3e8ded JA |
1030 | { |
1031 | unsigned long long elapsed; | |
1032 | struct io_track *iot; | |
1033 | ||
1034 | if (!track_ios) | |
1035 | return -1; | |
2e3e8ded | 1036 | |
f7bd1a9b | 1037 | iot = __find_track(pdi, t->sector); |
cb2a1a62 | 1038 | if (!iot) { |
57ea8602 JA |
1039 | if (verbose) |
1040 | fprintf(stderr,"complete not found for (%d,%d): %llu\n", | |
1041 | MAJOR(pdi->dev), MINOR(pdi->dev), | |
1042 | (unsigned long long) t->sector); | |
2e3e8ded | 1043 | return -1; |
cb2a1a62 | 1044 | } |
2e3e8ded JA |
1045 | |
1046 | iot->completion_time = t->time; | |
1047 | elapsed = iot->completion_time - iot->dispatch_time; | |
1048 | ||
50adc0ba | 1049 | if (per_process_stats) { |
2990e589 | 1050 | struct per_process_info *ppi = find_ppi(iot->ppm->pid); |
b9d40d6f | 1051 | int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
50adc0ba | 1052 | |
b9d40d6f JA |
1053 | if (ppi && elapsed > ppi->longest_completion_wait[w]) |
1054 | ppi->longest_completion_wait[w] = elapsed; | |
50adc0ba JA |
1055 | } |
1056 | ||
2e3e8ded JA |
1057 | /* |
1058 | * kill the trace, we don't need it after completion | |
1059 | */ | |
f7bd1a9b | 1060 | rb_erase(&iot->rb_node, &pdi->rb_track); |
2e3e8ded JA |
1061 | free(iot); |
1062 | ||
1063 | return elapsed; | |
1064 | } | |
1065 | ||
1066 | ||
9e4cd1b8 | 1067 | static struct io_stats *find_process_io_stats(pid_t pid) |
152f6476 | 1068 | { |
bfc70ad5 | 1069 | struct per_process_info *ppi = find_ppi(pid); |
152f6476 JA |
1070 | |
1071 | if (!ppi) { | |
1072 | ppi = malloc(sizeof(*ppi)); | |
1073 | memset(ppi, 0, sizeof(*ppi)); | |
2990e589 | 1074 | ppi->ppm = find_ppm(pid); |
bfc70ad5 JA |
1075 | add_ppi_to_hash(ppi); |
1076 | add_ppi_to_list(ppi); | |
152f6476 JA |
1077 | } |
1078 | ||
1079 | return &ppi->io_stats; | |
1080 | } | |
1081 | ||
e7c9f3ff NS |
1082 | static char *get_dev_name(struct per_dev_info *pdi, char *buffer, int size) |
1083 | { | |
1084 | if (pdi->name) | |
1085 | snprintf(buffer, size, "%s", pdi->name); | |
1086 | else | |
f7bd1a9b | 1087 | snprintf(buffer, size, "%d,%d",MAJOR(pdi->dev),MINOR(pdi->dev)); |
e7c9f3ff NS |
1088 | return buffer; |
1089 | } | |
1090 | ||
e7c9f3ff | 1091 | static void check_time(struct per_dev_info *pdi, struct blk_io_trace *bit) |
cfab07eb AB |
1092 | { |
1093 | unsigned long long this = bit->time; | |
e7c9f3ff | 1094 | unsigned long long last = pdi->last_reported_time; |
cfab07eb | 1095 | |
e7c9f3ff NS |
1096 | pdi->backwards = (this < last) ? 'B' : ' '; |
1097 | pdi->last_reported_time = this; | |
cfab07eb AB |
1098 | } |
1099 | ||
152f6476 JA |
1100 | static inline void __account_m(struct io_stats *ios, struct blk_io_trace *t, |
1101 | int rw) | |
d0ca268b JA |
1102 | { |
1103 | if (rw) { | |
152f6476 | 1104 | ios->mwrites++; |
ae957cbc | 1105 | ios->qwrite_kb += t_kb(t); |
d0ca268b | 1106 | } else { |
152f6476 | 1107 | ios->mreads++; |
ae957cbc | 1108 | ios->qread_kb += t_kb(t); |
152f6476 JA |
1109 | } |
1110 | } | |
1111 | ||
1112 | static inline void account_m(struct blk_io_trace *t, struct per_cpu_info *pci, | |
1113 | int rw) | |
1114 | { | |
1115 | __account_m(&pci->io_stats, t, rw); | |
1116 | ||
1117 | if (per_process_stats) { | |
bfc70ad5 | 1118 | struct io_stats *ios = find_process_io_stats(t->pid); |
152f6476 JA |
1119 | |
1120 | __account_m(ios, t, rw); | |
d0ca268b JA |
1121 | } |
1122 | } | |
1123 | ||
b6076a9b JA |
1124 | static inline void __account_queue(struct io_stats *ios, struct blk_io_trace *t, |
1125 | int rw) | |
d0ca268b JA |
1126 | { |
1127 | if (rw) { | |
152f6476 | 1128 | ios->qwrites++; |
ae957cbc | 1129 | ios->qwrite_kb += t_kb(t); |
d0ca268b | 1130 | } else { |
152f6476 | 1131 | ios->qreads++; |
ae957cbc | 1132 | ios->qread_kb += t_kb(t); |
152f6476 JA |
1133 | } |
1134 | } | |
1135 | ||
b6076a9b JA |
1136 | static inline void account_queue(struct blk_io_trace *t, |
1137 | struct per_cpu_info *pci, int rw) | |
152f6476 | 1138 | { |
b6076a9b | 1139 | __account_queue(&pci->io_stats, t, rw); |
152f6476 JA |
1140 | |
1141 | if (per_process_stats) { | |
bfc70ad5 | 1142 | struct io_stats *ios = find_process_io_stats(t->pid); |
152f6476 | 1143 | |
b6076a9b | 1144 | __account_queue(ios, t, rw); |
d0ca268b JA |
1145 | } |
1146 | } | |
1147 | ||
e21dc4dd | 1148 | static inline void __account_c(struct io_stats *ios, int rw, int bytes) |
d0ca268b JA |
1149 | { |
1150 | if (rw) { | |
152f6476 JA |
1151 | ios->cwrites++; |
1152 | ios->cwrite_kb += bytes >> 10; | |
d0ca268b | 1153 | } else { |
152f6476 JA |
1154 | ios->creads++; |
1155 | ios->cread_kb += bytes >> 10; | |
1156 | } | |
1157 | } | |
1158 | ||
1159 | static inline void account_c(struct blk_io_trace *t, struct per_cpu_info *pci, | |
1160 | int rw, int bytes) | |
1161 | { | |
1162 | __account_c(&pci->io_stats, rw, bytes); | |
1163 | ||
1164 | if (per_process_stats) { | |
bfc70ad5 | 1165 | struct io_stats *ios = find_process_io_stats(t->pid); |
152f6476 JA |
1166 | |
1167 | __account_c(ios, rw, bytes); | |
d0ca268b JA |
1168 | } |
1169 | } | |
1170 | ||
b6076a9b JA |
1171 | static inline void __account_issue(struct io_stats *ios, int rw, |
1172 | unsigned int bytes) | |
afd2d7ad | 1173 | { |
1174 | if (rw) { | |
152f6476 JA |
1175 | ios->iwrites++; |
1176 | ios->iwrite_kb += bytes >> 10; | |
afd2d7ad | 1177 | } else { |
152f6476 JA |
1178 | ios->ireads++; |
1179 | ios->iread_kb += bytes >> 10; | |
afd2d7ad | 1180 | } |
1181 | } | |
1182 | ||
b6076a9b JA |
1183 | static inline void account_issue(struct blk_io_trace *t, |
1184 | struct per_cpu_info *pci, int rw) | |
d0ca268b | 1185 | { |
b6076a9b | 1186 | __account_issue(&pci->io_stats, rw, t->bytes); |
152f6476 JA |
1187 | |
1188 | if (per_process_stats) { | |
bfc70ad5 | 1189 | struct io_stats *ios = find_process_io_stats(t->pid); |
d5396421 | 1190 | |
b6076a9b | 1191 | __account_issue(ios, rw, t->bytes); |
152f6476 JA |
1192 | } |
1193 | } | |
1194 | ||
06639b27 JA |
1195 | static inline void __account_unplug(struct io_stats *ios, int timer) |
1196 | { | |
1197 | if (timer) | |
1198 | ios->timer_unplugs++; | |
1199 | else | |
1200 | ios->io_unplugs++; | |
1201 | } | |
1202 | ||
1203 | static inline void account_unplug(struct blk_io_trace *t, | |
1204 | struct per_cpu_info *pci, int timer) | |
1205 | { | |
1206 | __account_unplug(&pci->io_stats, timer); | |
1207 | ||
1208 | if (per_process_stats) { | |
bfc70ad5 | 1209 | struct io_stats *ios = find_process_io_stats(t->pid); |
06639b27 JA |
1210 | |
1211 | __account_unplug(ios, timer); | |
1212 | } | |
1213 | } | |
1214 | ||
4054070a JA |
1215 | static inline void __account_requeue(struct io_stats *ios, |
1216 | struct blk_io_trace *t, int rw) | |
1217 | { | |
1218 | if (rw) { | |
1219 | ios->wrqueue++; | |
1220 | ios->iwrite_kb -= t_kb(t); | |
1221 | } else { | |
1222 | ios->rrqueue++; | |
1223 | ios->iread_kb -= t_kb(t); | |
1224 | } | |
1225 | } | |
1226 | ||
1227 | static inline void account_requeue(struct blk_io_trace *t, | |
1228 | struct per_cpu_info *pci, int rw) | |
1229 | { | |
1230 | __account_requeue(&pci->io_stats, t, rw); | |
1231 | ||
1232 | if (per_process_stats) { | |
bfc70ad5 | 1233 | struct io_stats *ios = find_process_io_stats(t->pid); |
4054070a JA |
1234 | |
1235 | __account_requeue(ios, t, rw); | |
1236 | } | |
1237 | } | |
1238 | ||
f7bd1a9b JA |
1239 | static void log_complete(struct per_dev_info *pdi, struct per_cpu_info *pci, |
1240 | struct blk_io_trace *t, char *act) | |
ab197ca7 | 1241 | { |
f7bd1a9b | 1242 | process_fmt(act, pci, t, log_track_complete(pdi, t), 0, NULL); |
ab197ca7 AB |
1243 | } |
1244 | ||
f7bd1a9b JA |
1245 | static void log_insert(struct per_dev_info *pdi, struct per_cpu_info *pci, |
1246 | struct blk_io_trace *t, char *act) | |
b6076a9b | 1247 | { |
f7bd1a9b | 1248 | process_fmt(act, pci, t, log_track_insert(pdi, t), 0, NULL); |
b6076a9b JA |
1249 | } |
1250 | ||
ab197ca7 AB |
1251 | static void log_queue(struct per_cpu_info *pci, struct blk_io_trace *t, |
1252 | char *act) | |
1253 | { | |
b6076a9b | 1254 | process_fmt(act, pci, t, -1, 0, NULL); |
ab197ca7 | 1255 | } |
2e3e8ded | 1256 | |
f7bd1a9b JA |
1257 | static void log_issue(struct per_dev_info *pdi, struct per_cpu_info *pci, |
1258 | struct blk_io_trace *t, char *act) | |
ab197ca7 | 1259 | { |
f7bd1a9b | 1260 | process_fmt(act, pci, t, log_track_issue(pdi, t), 0, NULL); |
d0ca268b JA |
1261 | } |
1262 | ||
f7bd1a9b JA |
1263 | static void log_merge(struct per_dev_info *pdi, struct per_cpu_info *pci, |
1264 | struct blk_io_trace *t, char *act) | |
d0ca268b | 1265 | { |
a01516de | 1266 | if (act[0] == 'F') |
f7bd1a9b | 1267 | log_track_frontmerge(pdi, t); |
2e3e8ded | 1268 | |
ab197ca7 | 1269 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
d0ca268b JA |
1270 | } |
1271 | ||
dfe34da1 | 1272 | static void log_action(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 1273 | char *act) |
dfe34da1 | 1274 | { |
ab197ca7 | 1275 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
dfe34da1 JA |
1276 | } |
1277 | ||
d5396421 | 1278 | static void log_generic(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 1279 | char *act) |
d0ca268b | 1280 | { |
ab197ca7 | 1281 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
d0ca268b JA |
1282 | } |
1283 | ||
ab197ca7 | 1284 | static void log_unplug(struct per_cpu_info *pci, struct blk_io_trace *t, |
3639a11e | 1285 | char *act) |
67e14fdc | 1286 | { |
ab197ca7 | 1287 | process_fmt(act, pci, t, -1ULL, 0, NULL); |
67e14fdc JA |
1288 | } |
1289 | ||
93f1c611 JA |
1290 | static void log_split(struct per_cpu_info *pci, struct blk_io_trace *t, |
1291 | char *act) | |
1292 | { | |
1293 | process_fmt(act, pci, t, -1ULL, 0, NULL); | |
1294 | } | |
1295 | ||
ab197ca7 | 1296 | static void log_pc(struct per_cpu_info *pci, struct blk_io_trace *t, char *act) |
d0ca268b | 1297 | { |
ab197ca7 | 1298 | unsigned char *buf = (unsigned char *) t + sizeof(*t); |
d0ca268b | 1299 | |
ab197ca7 | 1300 | process_fmt(act, pci, t, -1ULL, t->pdu_len, buf); |
d0ca268b JA |
1301 | } |
1302 | ||
ff3a732c | 1303 | static void dump_trace_pc(struct blk_io_trace *t, struct per_cpu_info *pci) |
d0ca268b | 1304 | { |
56f2af81 JA |
1305 | int act = t->action & 0xffff; |
1306 | ||
1307 | switch (act) { | |
d0ca268b | 1308 | case __BLK_TA_QUEUE: |
3639a11e | 1309 | log_generic(pci, t, "Q"); |
d0ca268b JA |
1310 | break; |
1311 | case __BLK_TA_GETRQ: | |
3639a11e | 1312 | log_generic(pci, t, "G"); |
d0ca268b JA |
1313 | break; |
1314 | case __BLK_TA_SLEEPRQ: | |
3639a11e | 1315 | log_generic(pci, t, "S"); |
d0ca268b JA |
1316 | break; |
1317 | case __BLK_TA_REQUEUE: | |
3639a11e | 1318 | log_generic(pci, t, "R"); |
d0ca268b JA |
1319 | break; |
1320 | case __BLK_TA_ISSUE: | |
ab197ca7 | 1321 | log_pc(pci, t, "D"); |
d0ca268b JA |
1322 | break; |
1323 | case __BLK_TA_COMPLETE: | |
3639a11e | 1324 | log_pc(pci, t, "C"); |
d0ca268b | 1325 | break; |
56f2af81 JA |
1326 | case __BLK_TA_INSERT: |
1327 | log_pc(pci, t, "I"); | |
1328 | break; | |
d0ca268b | 1329 | default: |
56f2af81 | 1330 | fprintf(stderr, "Bad pc action %x\n", act); |
87b72777 | 1331 | break; |
d0ca268b | 1332 | } |
d0ca268b JA |
1333 | } |
1334 | ||
f7bd1a9b JA |
1335 | static void dump_trace_fs(struct blk_io_trace *t, struct per_dev_info *pdi, |
1336 | struct per_cpu_info *pci) | |
d0ca268b | 1337 | { |
649c7b66 | 1338 | int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0; |
7997c5b0 | 1339 | int act = t->action & 0xffff; |
d0ca268b | 1340 | |
7997c5b0 | 1341 | switch (act) { |
d0ca268b | 1342 | case __BLK_TA_QUEUE: |
753f9091 | 1343 | log_track_queue(pdi, t); |
b6076a9b | 1344 | account_queue(t, pci, w); |
3639a11e | 1345 | log_queue(pci, t, "Q"); |
d0ca268b | 1346 | break; |
b6076a9b | 1347 | case __BLK_TA_INSERT: |
f7bd1a9b | 1348 | log_insert(pdi, pci, t, "I"); |
b6076a9b | 1349 | break; |
d0ca268b | 1350 | case __BLK_TA_BACKMERGE: |
152f6476 | 1351 | account_m(t, pci, w); |
f7bd1a9b | 1352 | log_merge(pdi, pci, t, "M"); |
d0ca268b JA |
1353 | break; |
1354 | case __BLK_TA_FRONTMERGE: | |
152f6476 | 1355 | account_m(t, pci, w); |
f7bd1a9b | 1356 | log_merge(pdi, pci, t, "F"); |
d0ca268b JA |
1357 | break; |
1358 | case __BLK_TA_GETRQ: | |
f7bd1a9b | 1359 | log_track_getrq(pdi, t); |
3639a11e | 1360 | log_generic(pci, t, "G"); |
d0ca268b JA |
1361 | break; |
1362 | case __BLK_TA_SLEEPRQ: | |
3639a11e | 1363 | log_generic(pci, t, "S"); |
d0ca268b JA |
1364 | break; |
1365 | case __BLK_TA_REQUEUE: | |
65f2deb5 JA |
1366 | /* |
1367 | * can happen if we miss traces, don't let it go | |
1368 | * below zero | |
1369 | */ | |
1370 | if (pdi->cur_depth[w]) | |
1371 | pdi->cur_depth[w]--; | |
4054070a | 1372 | account_requeue(t, pci, w); |
3639a11e | 1373 | log_queue(pci, t, "R"); |
d0ca268b JA |
1374 | break; |
1375 | case __BLK_TA_ISSUE: | |
b6076a9b | 1376 | account_issue(t, pci, w); |
649c7b66 JA |
1377 | pdi->cur_depth[w]++; |
1378 | if (pdi->cur_depth[w] > pdi->max_depth[w]) | |
1379 | pdi->max_depth[w] = pdi->cur_depth[w]; | |
f7bd1a9b | 1380 | log_issue(pdi, pci, t, "D"); |
d0ca268b JA |
1381 | break; |
1382 | case __BLK_TA_COMPLETE: | |
65f2deb5 JA |
1383 | if (pdi->cur_depth[w]) |
1384 | pdi->cur_depth[w]--; | |
152f6476 | 1385 | account_c(t, pci, w, t->bytes); |
f7bd1a9b | 1386 | log_complete(pdi, pci, t, "C"); |
d0ca268b | 1387 | break; |
88b1a526 | 1388 | case __BLK_TA_PLUG: |
3639a11e | 1389 | log_action(pci, t, "P"); |
88b1a526 | 1390 | break; |
3639a11e | 1391 | case __BLK_TA_UNPLUG_IO: |
06639b27 | 1392 | account_unplug(t, pci, 0); |
3639a11e JA |
1393 | log_unplug(pci, t, "U"); |
1394 | break; | |
1395 | case __BLK_TA_UNPLUG_TIMER: | |
06639b27 | 1396 | account_unplug(t, pci, 1); |
3639a11e | 1397 | log_unplug(pci, t, "UT"); |
88b1a526 | 1398 | break; |
93f1c611 JA |
1399 | case __BLK_TA_SPLIT: |
1400 | log_split(pci, t, "X"); | |
1401 | break; | |
1402 | case __BLK_TA_BOUNCE: | |
1403 | log_generic(pci, t, "B"); | |
1404 | break; | |
a8f30e64 JA |
1405 | case __BLK_TA_REMAP: |
1406 | log_generic(pci, t, "A"); | |
1407 | break; | |
d0ca268b JA |
1408 | default: |
1409 | fprintf(stderr, "Bad fs action %x\n", t->action); | |
1f79c4a0 | 1410 | break; |
d0ca268b | 1411 | } |
d0ca268b JA |
1412 | } |
1413 | ||
ff3a732c JA |
1414 | static void dump_trace(struct blk_io_trace *t, struct per_cpu_info *pci, |
1415 | struct per_dev_info *pdi) | |
d0ca268b JA |
1416 | { |
1417 | if (t->action & BLK_TC_ACT(BLK_TC_PC)) | |
ff3a732c | 1418 | dump_trace_pc(t, pci); |
d0ca268b | 1419 | else |
f7bd1a9b | 1420 | dump_trace_fs(t, pdi, pci); |
87b72777 | 1421 | |
20ed6177 JA |
1422 | if (!pdi->events) |
1423 | pdi->first_reported_time = t->time; | |
1424 | ||
e7c9f3ff | 1425 | pdi->events++; |
a2594911 AB |
1426 | |
1427 | output_binary(t, sizeof(*t) + t->pdu_len); | |
d0ca268b JA |
1428 | } |
1429 | ||
4c523165 JA |
1430 | /* |
1431 | * print in a proper way, not too small and not too big. if more than | |
1432 | * 1000,000K, turn into M and so on | |
1433 | */ | |
1434 | static char *size_cnv(char *dst, unsigned long long num, int in_kb) | |
1435 | { | |
da19e768 | 1436 | char suff[] = { '\0', 'K', 'M', 'G', 'P' }; |
0dc3602c | 1437 | unsigned int i = 0; |
4c523165 JA |
1438 | |
1439 | if (in_kb) | |
1440 | i++; | |
1441 | ||
0dc3602c | 1442 | while (num > 1000 * 1000ULL && (i < sizeof(suff) - 1)) { |
4c523165 JA |
1443 | i++; |
1444 | num /= 1000; | |
1445 | } | |
1446 | ||
1447 | sprintf(dst, "%'8Lu%c", num, suff[i]); | |
1448 | return dst; | |
1449 | } | |
1450 | ||
649c7b66 JA |
1451 | static void dump_io_stats(struct per_dev_info *pdi, struct io_stats *ios, |
1452 | char *msg) | |
5c017e4b | 1453 | { |
4c523165 JA |
1454 | static char x[256], y[256]; |
1455 | ||
152f6476 JA |
1456 | fprintf(ofp, "%s\n", msg); |
1457 | ||
4c523165 JA |
1458 | fprintf(ofp, " Reads Queued: %s, %siB\t", size_cnv(x, ios->qreads, 0), size_cnv(y, ios->qread_kb, 1)); |
1459 | fprintf(ofp, " Writes Queued: %s, %siB\n", size_cnv(x, ios->qwrites, 0), size_cnv(y, ios->qwrite_kb, 1)); | |
0a6b8fc4 | 1460 | |
4c523165 JA |
1461 | fprintf(ofp, " Read Dispatches: %s, %siB\t", size_cnv(x, ios->ireads, 0), size_cnv(y, ios->iread_kb, 1)); |
1462 | fprintf(ofp, " Write Dispatches: %s, %siB\n", size_cnv(x, ios->iwrites, 0), size_cnv(y, ios->iwrite_kb, 1)); | |
4054070a JA |
1463 | fprintf(ofp, " Reads Requeued: %s\t\t", size_cnv(x, ios->rrqueue, 0)); |
1464 | fprintf(ofp, " Writes Requeued: %s\n", size_cnv(x, ios->wrqueue, 0)); | |
4c523165 JA |
1465 | fprintf(ofp, " Reads Completed: %s, %siB\t", size_cnv(x, ios->creads, 0), size_cnv(y, ios->cread_kb, 1)); |
1466 | fprintf(ofp, " Writes Completed: %s, %siB\n", size_cnv(x, ios->cwrites, 0), size_cnv(y, ios->cwrite_kb, 1)); | |
152f6476 | 1467 | fprintf(ofp, " Read Merges: %'8lu%8c\t", ios->mreads, ' '); |
152f6476 | 1468 | fprintf(ofp, " Write Merges: %'8lu\n", ios->mwrites); |
649c7b66 JA |
1469 | if (pdi) { |
1470 | fprintf(ofp, " Read depth: %'8u%8c\t", pdi->max_depth[0], ' '); | |
1471 | fprintf(ofp, " Write depth: %'8u\n", pdi->max_depth[1]); | |
1472 | } | |
06639b27 JA |
1473 | fprintf(ofp, " IO unplugs: %'8lu%8c\t", ios->io_unplugs, ' '); |
1474 | fprintf(ofp, " Timer unplugs: %'8lu\n", ios->timer_unplugs); | |
5c017e4b JA |
1475 | } |
1476 | ||
50adc0ba JA |
1477 | static void dump_wait_stats(struct per_process_info *ppi) |
1478 | { | |
b9d40d6f JA |
1479 | unsigned long rawait = ppi->longest_allocation_wait[0] / 1000; |
1480 | unsigned long rdwait = ppi->longest_dispatch_wait[0] / 1000; | |
1481 | unsigned long rcwait = ppi->longest_completion_wait[0] / 1000; | |
1482 | unsigned long wawait = ppi->longest_allocation_wait[1] / 1000; | |
1483 | unsigned long wdwait = ppi->longest_dispatch_wait[1] / 1000; | |
1484 | unsigned long wcwait = ppi->longest_completion_wait[1] / 1000; | |
1485 | ||
1486 | fprintf(ofp, " Allocation wait: %'8lu%8c\t", rawait, ' '); | |
1487 | fprintf(ofp, " Allocation wait: %'8lu\n", wawait); | |
1488 | fprintf(ofp, " Dispatch wait: %'8lu%8c\t", rdwait, ' '); | |
1489 | fprintf(ofp, " Dispatch wait: %'8lu\n", wdwait); | |
1490 | fprintf(ofp, " Completion wait: %'8lu%8c\t", rcwait, ' '); | |
1491 | fprintf(ofp, " Completion wait: %'8lu\n", wcwait); | |
50adc0ba JA |
1492 | } |
1493 | ||
886ecf0e JA |
1494 | static int ppi_name_compare(const void *p1, const void *p2) |
1495 | { | |
1496 | struct per_process_info *ppi1 = *((struct per_process_info **) p1); | |
1497 | struct per_process_info *ppi2 = *((struct per_process_info **) p2); | |
1498 | int res; | |
1499 | ||
2990e589 | 1500 | res = strverscmp(ppi1->ppm->comm, ppi2->ppm->comm); |
886ecf0e | 1501 | if (!res) |
2990e589 | 1502 | res = ppi1->ppm->pid > ppi2->ppm->pid; |
886ecf0e JA |
1503 | |
1504 | return res; | |
1505 | } | |
1506 | ||
1507 | static void sort_process_list(void) | |
1508 | { | |
1509 | struct per_process_info **ppis; | |
1510 | struct per_process_info *ppi; | |
1511 | int i = 0; | |
1512 | ||
1513 | ppis = malloc(ppi_list_entries * sizeof(struct per_process_info *)); | |
1514 | ||
1515 | ppi = ppi_list; | |
1516 | while (ppi) { | |
06e6f286 | 1517 | ppis[i++] = ppi; |
886ecf0e JA |
1518 | ppi = ppi->list_next; |
1519 | } | |
1520 | ||
06e6f286 | 1521 | qsort(ppis, ppi_list_entries, sizeof(ppi), ppi_name_compare); |
886ecf0e JA |
1522 | |
1523 | i = ppi_list_entries - 1; | |
1524 | ppi_list = NULL; | |
1525 | while (i >= 0) { | |
1526 | ppi = ppis[i]; | |
1527 | ||
1528 | ppi->list_next = ppi_list; | |
1529 | ppi_list = ppi; | |
1530 | i--; | |
1531 | } | |
50c38702 JA |
1532 | |
1533 | free(ppis); | |
886ecf0e JA |
1534 | } |
1535 | ||
152f6476 JA |
1536 | static void show_process_stats(void) |
1537 | { | |
1538 | struct per_process_info *ppi; | |
1539 | ||
886ecf0e JA |
1540 | sort_process_list(); |
1541 | ||
152f6476 JA |
1542 | ppi = ppi_list; |
1543 | while (ppi) { | |
2990e589 | 1544 | struct process_pid_map *ppm = ppi->ppm; |
ce8b6b4f JA |
1545 | char name[64]; |
1546 | ||
715d8021 | 1547 | if (ppi->more_than_one) |
2990e589 | 1548 | sprintf(name, "%s (%u, ...)", ppm->comm, ppm->pid); |
715d8021 | 1549 | else |
2990e589 | 1550 | sprintf(name, "%s (%u)", ppm->comm, ppm->pid); |
bf0720af | 1551 | |
649c7b66 | 1552 | dump_io_stats(NULL, &ppi->io_stats, name); |
50adc0ba | 1553 | dump_wait_stats(ppi); |
152f6476 JA |
1554 | ppi = ppi->list_next; |
1555 | } | |
1556 | ||
1557 | fprintf(ofp, "\n"); | |
1558 | } | |
1559 | ||
e7c9f3ff | 1560 | static void show_device_and_cpu_stats(void) |
d0ca268b | 1561 | { |
e7c9f3ff NS |
1562 | struct per_dev_info *pdi; |
1563 | struct per_cpu_info *pci; | |
1564 | struct io_stats total, *ios; | |
20ed6177 | 1565 | unsigned long long rrate, wrate, msec; |
e7c9f3ff NS |
1566 | int i, j, pci_events; |
1567 | char line[3 + 8/*cpu*/ + 2 + 32/*dev*/ + 3]; | |
1568 | char name[32]; | |
1569 | ||
1570 | for (pdi = devices, i = 0; i < ndevices; i++, pdi++) { | |
1571 | ||
1572 | memset(&total, 0, sizeof(total)); | |
1573 | pci_events = 0; | |
1574 | ||
1575 | if (i > 0) | |
1576 | fprintf(ofp, "\n"); | |
1577 | ||
1578 | for (pci = pdi->cpus, j = 0; j < pdi->ncpus; j++, pci++) { | |
1579 | if (!pci->nelems) | |
1580 | continue; | |
1581 | ||
1582 | ios = &pci->io_stats; | |
1583 | total.qreads += ios->qreads; | |
1584 | total.qwrites += ios->qwrites; | |
1585 | total.creads += ios->creads; | |
1586 | total.cwrites += ios->cwrites; | |
1587 | total.mreads += ios->mreads; | |
1588 | total.mwrites += ios->mwrites; | |
1589 | total.ireads += ios->ireads; | |
1590 | total.iwrites += ios->iwrites; | |
4054070a JA |
1591 | total.rrqueue += ios->rrqueue; |
1592 | total.wrqueue += ios->wrqueue; | |
e7c9f3ff NS |
1593 | total.qread_kb += ios->qread_kb; |
1594 | total.qwrite_kb += ios->qwrite_kb; | |
1595 | total.cread_kb += ios->cread_kb; | |
1596 | total.cwrite_kb += ios->cwrite_kb; | |
1597 | total.iread_kb += ios->iread_kb; | |
1598 | total.iwrite_kb += ios->iwrite_kb; | |
06639b27 JA |
1599 | total.timer_unplugs += ios->timer_unplugs; |
1600 | total.io_unplugs += ios->io_unplugs; | |
e7c9f3ff NS |
1601 | |
1602 | snprintf(line, sizeof(line) - 1, "CPU%d (%s):", | |
1603 | j, get_dev_name(pdi, name, sizeof(name))); | |
649c7b66 | 1604 | dump_io_stats(pdi, ios, line); |
e7c9f3ff NS |
1605 | pci_events++; |
1606 | } | |
5c017e4b | 1607 | |
e7c9f3ff NS |
1608 | if (pci_events > 1) { |
1609 | fprintf(ofp, "\n"); | |
1610 | snprintf(line, sizeof(line) - 1, "Total (%s):", | |
1611 | get_dev_name(pdi, name, sizeof(name))); | |
649c7b66 | 1612 | dump_io_stats(NULL, &total, line); |
e7c9f3ff | 1613 | } |
d0ca268b | 1614 | |
20ed6177 | 1615 | wrate = rrate = 0; |
20ed6177 JA |
1616 | msec = (pdi->last_reported_time - pdi->first_reported_time) / 1000000; |
1617 | if (msec) { | |
1618 | rrate = 1000 * total.cread_kb / msec; | |
1619 | wrate = 1000 * total.cwrite_kb / msec; | |
1620 | } | |
1621 | ||
dce0f678 AB |
1622 | fprintf(ofp, "\nThroughput (R/W): %'LuKiB/s / %'LuKiB/s\n", |
1623 | rrate, wrate); | |
1624 | fprintf(ofp, "Events (%s): %'Lu entries\n", | |
1625 | get_dev_name(pdi, line, sizeof(line)), pdi->events); | |
492da111 AB |
1626 | |
1627 | collect_pdi_skips(pdi); | |
1628 | fprintf(ofp, "Skips: %'lu forward (%'llu - %5.1lf%%)\n", | |
dce0f678 AB |
1629 | pdi->skips,pdi->seq_skips, |
1630 | 100.0 * ((double)pdi->seq_skips / | |
dce0f678 | 1631 | (double)(pdi->events + pdi->seq_skips))); |
e7c9f3ff | 1632 | } |
d0ca268b JA |
1633 | } |
1634 | ||
4f0ae44f JA |
1635 | static void find_genesis(void) |
1636 | { | |
1637 | struct trace *t = trace_list; | |
1638 | ||
1639 | genesis_time = -1ULL; | |
1640 | while (t != NULL) { | |
1641 | if (t->bit->time < genesis_time) | |
1642 | genesis_time = t->bit->time; | |
1643 | ||
1644 | t = t->next; | |
1645 | } | |
1646 | } | |
1647 | ||
7f4d89e6 | 1648 | static inline int check_stopwatch(struct blk_io_trace *bit) |
4f0ae44f | 1649 | { |
7f4d89e6 JA |
1650 | if (bit->time < stopwatch_end && |
1651 | bit->time >= stopwatch_start) | |
4f0ae44f JA |
1652 | return 0; |
1653 | ||
1654 | return 1; | |
1655 | } | |
1656 | ||
53c68c88 JA |
1657 | /* |
1658 | * return youngest entry read | |
1659 | */ | |
1660 | static int sort_entries(unsigned long long *youngest) | |
4f0ae44f | 1661 | { |
210824c3 JA |
1662 | struct per_dev_info *pdi = NULL; |
1663 | struct per_cpu_info *pci = NULL; | |
4f0ae44f | 1664 | struct trace *t; |
4f0ae44f JA |
1665 | |
1666 | if (!genesis_time) | |
1667 | find_genesis(); | |
1668 | ||
d6222db8 | 1669 | *youngest = 0; |
4f0ae44f JA |
1670 | while ((t = trace_list) != NULL) { |
1671 | struct blk_io_trace *bit = t->bit; | |
1672 | ||
1673 | trace_list = t->next; | |
1674 | ||
7f4d89e6 | 1675 | bit->time -= genesis_time; |
4f0ae44f | 1676 | |
d6222db8 JA |
1677 | if (bit->time < *youngest || !*youngest) |
1678 | *youngest = bit->time; | |
1679 | ||
210824c3 JA |
1680 | if (!pdi || pdi->dev != bit->device) { |
1681 | pdi = get_dev_info(bit->device); | |
1682 | pci = NULL; | |
1683 | } | |
1684 | ||
1685 | if (!pci || pci->cpu != bit->cpu) | |
1686 | pci = get_cpu_info(pdi, bit->cpu); | |
1687 | ||
1688 | if (bit->sequence < pci->smallest_seq_read) | |
1689 | pci->smallest_seq_read = bit->sequence; | |
774a1a10 | 1690 | |
7f4d89e6 | 1691 | if (check_stopwatch(bit)) { |
4f0ae44f JA |
1692 | bit_free(bit); |
1693 | t_free(t); | |
1694 | continue; | |
1695 | } | |
1696 | ||
2a1b3424 | 1697 | if (trace_rb_insert_sort(t)) |
53c68c88 | 1698 | return -1; |
4f0ae44f JA |
1699 | } |
1700 | ||
53c68c88 | 1701 | return 0; |
4f0ae44f JA |
1702 | } |
1703 | ||
824c2b39 JA |
1704 | /* |
1705 | * to continue, we must have traces from all online cpus in the tree | |
1706 | */ | |
1707 | static int check_cpu_map(struct per_dev_info *pdi) | |
1708 | { | |
1709 | unsigned long *cpu_map; | |
1710 | struct rb_node *n; | |
1711 | struct trace *__t; | |
1712 | unsigned int i; | |
1713 | int ret, cpu; | |
1714 | ||
1715 | /* | |
1716 | * create a map of the cpus we have traces for | |
1717 | */ | |
1718 | cpu_map = malloc(pdi->cpu_map_max / sizeof(long)); | |
1719 | n = rb_first(&rb_sort_root); | |
1720 | while (n) { | |
1721 | __t = rb_entry(n, struct trace, rb_node); | |
1722 | cpu = __t->bit->cpu; | |
1723 | ||
1724 | cpu_map[CPU_IDX(cpu)] |= (1UL << CPU_BIT(cpu)); | |
1725 | n = rb_next(n); | |
1726 | } | |
1727 | ||
1728 | /* | |
b1c8e614 JA |
1729 | * we can't continue if pdi->cpu_map has entries set that we don't |
1730 | * have in the sort rbtree. the opposite is not a problem, though | |
824c2b39 JA |
1731 | */ |
1732 | ret = 0; | |
1733 | for (i = 0; i < pdi->cpu_map_max / CPUS_PER_LONG; i++) { | |
1734 | if (pdi->cpu_map[i] & ~(cpu_map[i])) { | |
1735 | ret = 1; | |
1736 | break; | |
1737 | } | |
1738 | } | |
1739 | ||
1740 | free(cpu_map); | |
1741 | return ret; | |
1742 | } | |
1743 | ||
a141a7cd | 1744 | static int check_sequence(struct per_dev_info *pdi, struct trace *t, int force) |
2a1b3424 | 1745 | { |
1ca323a5 | 1746 | struct blk_io_trace *bit = t->bit; |
210824c3 JA |
1747 | unsigned long expected_sequence; |
1748 | struct per_cpu_info *pci; | |
1ca323a5 | 1749 | struct trace *__t; |
492da111 | 1750 | |
210824c3 JA |
1751 | pci = get_cpu_info(pdi, bit->cpu); |
1752 | expected_sequence = pci->last_sequence + 1; | |
1753 | ||
774a1a10 | 1754 | if (!expected_sequence) { |
774a1a10 JA |
1755 | /* |
1756 | * 1 should be the first entry, just allow it | |
1757 | */ | |
1758 | if (bit->sequence == 1) | |
1759 | return 0; | |
210824c3 | 1760 | if (bit->sequence == pci->smallest_seq_read) |
79ee9704 | 1761 | return 0; |
774a1a10 | 1762 | |
824c2b39 | 1763 | return check_cpu_map(pdi); |
774a1a10 | 1764 | } |
2a1b3424 JA |
1765 | |
1766 | if (bit->sequence == expected_sequence) | |
1767 | return 0; | |
1768 | ||
2a1b3424 | 1769 | /* |
1c7c54aa JA |
1770 | * we may not have seen that sequence yet. if we are not doing |
1771 | * the final run, break and wait for more entries. | |
1c24add6 | 1772 | */ |
210824c3 JA |
1773 | if (expected_sequence < pci->smallest_seq_read) { |
1774 | __t = trace_rb_find_last(pdi, pci, expected_sequence); | |
1ca323a5 | 1775 | if (!__t) |
1c7c54aa | 1776 | goto skip; |
2a1b3424 | 1777 | |
1ca323a5 | 1778 | __put_trace_last(pdi, __t); |
2a1b3424 | 1779 | return 0; |
a141a7cd JA |
1780 | } else if (!force) { |
1781 | return 1; | |
0b07f23e | 1782 | } else { |
1c7c54aa | 1783 | skip: |
66930177 | 1784 | if (check_current_skips(pci, bit->sequence)) |
492da111 AB |
1785 | return 0; |
1786 | ||
965eca2d | 1787 | if (expected_sequence < bit->sequence) |
66930177 | 1788 | insert_skip(pci, expected_sequence, bit->sequence - 1); |
1c7c54aa JA |
1789 | return 0; |
1790 | } | |
2a1b3424 JA |
1791 | } |
1792 | ||
a649216c | 1793 | static void show_entries_rb(int force) |
8fc0abbc | 1794 | { |
1f7afa72 JA |
1795 | struct per_dev_info *pdi = NULL; |
1796 | struct per_cpu_info *pci = NULL; | |
8fc0abbc | 1797 | struct blk_io_trace *bit; |
3aabcd89 | 1798 | struct rb_node *n; |
8fc0abbc | 1799 | struct trace *t; |
1f7afa72 | 1800 | |
7d747d22 | 1801 | while ((n = rb_first(&rb_sort_root)) != NULL) { |
dd90748f | 1802 | if (is_done() && !force && !pipeline) |
1f7afa72 | 1803 | break; |
8fc0abbc JA |
1804 | |
1805 | t = rb_entry(n, struct trace, rb_node); | |
1806 | bit = t->bit; | |
1807 | ||
a43c1c17 JA |
1808 | if (read_sequence - t->read_sequence < 1 && !force) |
1809 | break; | |
1810 | ||
210824c3 | 1811 | if (!pdi || pdi->dev != bit->device) { |
287fa3d6 | 1812 | pdi = get_dev_info(bit->device); |
210824c3 JA |
1813 | pci = NULL; |
1814 | } | |
1f7afa72 | 1815 | |
e7c9f3ff NS |
1816 | if (!pdi) { |
1817 | fprintf(stderr, "Unknown device ID? (%d,%d)\n", | |
1818 | MAJOR(bit->device), MINOR(bit->device)); | |
1819 | break; | |
1820 | } | |
1f7afa72 | 1821 | |
a141a7cd JA |
1822 | if (check_sequence(pdi, t, force)) |
1823 | break; | |
cb2a1a62 | 1824 | |
a141a7cd JA |
1825 | if (!force && bit->time > last_allowed_time) |
1826 | break; | |
8fc0abbc | 1827 | |
4f0ae44f | 1828 | check_time(pdi, bit); |
8fc0abbc | 1829 | |
4f0ae44f JA |
1830 | if (!pci || pci->cpu != bit->cpu) |
1831 | pci = get_cpu_info(pdi, bit->cpu); | |
287fa3d6 | 1832 | |
210824c3 JA |
1833 | pci->last_sequence = bit->sequence; |
1834 | ||
cbc927b6 JA |
1835 | pci->nelems++; |
1836 | ||
66930177 | 1837 | if (bit->action & (act_mask << BLK_TC_SHIFT)) |
98f8386b | 1838 | dump_trace(bit, pci, pdi); |
87b72777 | 1839 | |
2a1b3424 | 1840 | put_trace(pdi, t); |
cb2a1a62 | 1841 | } |
8fc0abbc JA |
1842 | } |
1843 | ||
c0e0dbc2 | 1844 | static int read_data(int fd, void *buffer, int bytes, int block, int *fdblock) |
1f79c4a0 JA |
1845 | { |
1846 | int ret, bytes_left, fl; | |
1847 | void *p; | |
1848 | ||
c0e0dbc2 JA |
1849 | if (block != *fdblock) { |
1850 | fl = fcntl(fd, F_GETFL); | |
1f79c4a0 | 1851 | |
c0e0dbc2 JA |
1852 | if (!block) { |
1853 | *fdblock = 0; | |
1854 | fcntl(fd, F_SETFL, fl | O_NONBLOCK); | |
1855 | } else { | |
1856 | *fdblock = 1; | |
1857 | fcntl(fd, F_SETFL, fl & ~O_NONBLOCK); | |
1858 | } | |
1859 | } | |
1f79c4a0 JA |
1860 | |
1861 | bytes_left = bytes; | |
1862 | p = buffer; | |
1863 | while (bytes_left > 0) { | |
1864 | ret = read(fd, p, bytes_left); | |
1865 | if (!ret) | |
1866 | return 1; | |
1867 | else if (ret < 0) { | |
db7e0552 | 1868 | if (errno != EAGAIN) { |
1f79c4a0 | 1869 | perror("read"); |
db7e0552 JA |
1870 | return -1; |
1871 | } | |
a649216c | 1872 | |
5c0f40f7 JA |
1873 | /* |
1874 | * never do partial reads. we can return if we | |
1875 | * didn't read anything and we should not block, | |
1876 | * otherwise wait for data | |
1877 | */ | |
1878 | if ((bytes_left == bytes) && !block) | |
1879 | return 1; | |
1880 | ||
1881 | usleep(10); | |
1882 | continue; | |
1f79c4a0 JA |
1883 | } else { |
1884 | p += ret; | |
1885 | bytes_left -= ret; | |
1886 | } | |
1887 | } | |
1888 | ||
1889 | return 0; | |
1890 | } | |
1891 | ||
017d1660 JA |
1892 | static inline __u16 get_pdulen(struct blk_io_trace *bit) |
1893 | { | |
1894 | if (data_is_native) | |
1895 | return bit->pdu_len; | |
1896 | ||
1897 | return __bswap_16(bit->pdu_len); | |
1898 | } | |
1899 | ||
1900 | static inline __u32 get_magic(struct blk_io_trace *bit) | |
1901 | { | |
1902 | if (data_is_native) | |
1903 | return bit->magic; | |
1904 | ||
1905 | return __bswap_32(bit->magic); | |
1906 | } | |
1907 | ||
c0e0dbc2 | 1908 | static int read_events(int fd, int always_block, int *fdblock) |
cb2a1a62 | 1909 | { |
287fa3d6 | 1910 | struct per_dev_info *pdi = NULL; |
e820abd7 | 1911 | unsigned int events = 0; |
7d747d22 JA |
1912 | |
1913 | while (!is_done() && events < rb_batch) { | |
1914 | struct blk_io_trace *bit; | |
1915 | struct trace *t; | |
db7e0552 | 1916 | int pdu_len, should_block, ret; |
7d747d22 JA |
1917 | __u32 magic; |
1918 | ||
d36421e4 | 1919 | bit = bit_alloc(); |
cb2a1a62 | 1920 | |
c0e0dbc2 JA |
1921 | should_block = !events || always_block; |
1922 | ||
db7e0552 JA |
1923 | ret = read_data(fd, bit, sizeof(*bit), should_block, fdblock); |
1924 | if (ret) { | |
eb9bd4e9 | 1925 | bit_free(bit); |
db7e0552 JA |
1926 | if (!events && ret < 0) |
1927 | events = ret; | |
cb2a1a62 | 1928 | break; |
eb9bd4e9 | 1929 | } |
cb2a1a62 | 1930 | |
017d1660 JA |
1931 | /* |
1932 | * look at first trace to check whether we need to convert | |
1933 | * data in the future | |
1934 | */ | |
9e4cd1b8 | 1935 | if (data_is_native == -1 && check_data_endianness(bit->magic)) |
017d1660 JA |
1936 | break; |
1937 | ||
1938 | magic = get_magic(bit); | |
7d747d22 JA |
1939 | if ((magic & 0xffffff00) != BLK_IO_TRACE_MAGIC) { |
1940 | fprintf(stderr, "Bad magic %x\n", magic); | |
1941 | break; | |
1942 | } | |
1943 | ||
017d1660 | 1944 | pdu_len = get_pdulen(bit); |
7d747d22 JA |
1945 | if (pdu_len) { |
1946 | void *ptr = realloc(bit, sizeof(*bit) + pdu_len); | |
1947 | ||
c0e0dbc2 | 1948 | if (read_data(fd, ptr + sizeof(*bit), pdu_len, 1, fdblock)) { |
eb9bd4e9 | 1949 | bit_free(ptr); |
7d747d22 | 1950 | break; |
eb9bd4e9 | 1951 | } |
7d747d22 JA |
1952 | |
1953 | bit = ptr; | |
1954 | } | |
1955 | ||
d6222db8 JA |
1956 | trace_to_cpu(bit); |
1957 | ||
1958 | if (verify_trace(bit)) { | |
1959 | bit_free(bit); | |
1960 | continue; | |
1961 | } | |
1962 | ||
bfc70ad5 JA |
1963 | /* |
1964 | * not a real trace, so grab and handle it here | |
1965 | */ | |
1966 | if (bit->action & BLK_TC_ACT(BLK_TC_NOTIFY)) { | |
1967 | add_ppm_hash(bit->pid, (char *) bit + sizeof(*bit)); | |
a2594911 | 1968 | output_binary(bit, sizeof(*bit) + bit->pdu_len); |
bfc70ad5 JA |
1969 | continue; |
1970 | } | |
1971 | ||
d36421e4 | 1972 | t = t_alloc(); |
cb2a1a62 JA |
1973 | memset(t, 0, sizeof(*t)); |
1974 | t->bit = bit; | |
a43c1c17 | 1975 | t->read_sequence = read_sequence; |
cb2a1a62 | 1976 | |
7d747d22 JA |
1977 | t->next = trace_list; |
1978 | trace_list = t; | |
1f7afa72 | 1979 | |
f7bd1a9b | 1980 | if (!pdi || pdi->dev != bit->device) |
287fa3d6 JA |
1981 | pdi = get_dev_info(bit->device); |
1982 | ||
1983 | if (bit->time > pdi->last_read_time) | |
1984 | pdi->last_read_time = bit->time; | |
1985 | ||
7d747d22 | 1986 | events++; |
cb2a1a62 JA |
1987 | } |
1988 | ||
7d747d22 | 1989 | return events; |
cb2a1a62 JA |
1990 | } |
1991 | ||
d5396421 | 1992 | static int do_file(void) |
d0ca268b | 1993 | { |
7d747d22 | 1994 | struct per_cpu_info *pci; |
73877e12 NS |
1995 | struct per_dev_info *pdi; |
1996 | int i, j, events, events_added; | |
d0ca268b | 1997 | |
7d747d22 JA |
1998 | /* |
1999 | * first prepare all files for reading | |
2000 | */ | |
e8741a4a | 2001 | for (i = 0; i < ndevices; i++) { |
73877e12 NS |
2002 | pdi = &devices[i]; |
2003 | pdi->nfiles = 0; | |
73877e12 | 2004 | |
74feaeb5 | 2005 | for (j = 0;; j++) { |
e7c9f3ff | 2006 | struct stat st; |
d1d7f15f | 2007 | int len = 0; |
6e0073ed | 2008 | char *p, *dname; |
87b72777 | 2009 | |
e7c9f3ff NS |
2010 | pci = get_cpu_info(pdi, j); |
2011 | pci->cpu = j; | |
7d747d22 | 2012 | pci->fd = -1; |
c0e0dbc2 | 2013 | pci->fdblock = -1; |
6e0073ed JA |
2014 | |
2015 | p = strdup(pdi->name); | |
2016 | dname = dirname(p); | |
2017 | if (strcmp(dname, ".")) { | |
2018 | input_dir = dname; | |
2019 | p = strdup(pdi->name); | |
2020 | strcpy(pdi->name, basename(p)); | |
2021 | } | |
2022 | free(p); | |
d0ca268b | 2023 | |
d1d7f15f JA |
2024 | if (input_dir) |
2025 | len = sprintf(pci->fname, "%s/", input_dir); | |
2026 | ||
2027 | snprintf(pci->fname + len, sizeof(pci->fname)-1-len, | |
7d747d22 | 2028 | "%s.blktrace.%d", pdi->name, pci->cpu); |
e7c9f3ff NS |
2029 | if (stat(pci->fname, &st) < 0) |
2030 | break; | |
74feaeb5 AB |
2031 | if (st.st_size) { |
2032 | pci->fd = open(pci->fname, O_RDONLY); | |
2033 | if (pci->fd < 0) { | |
2034 | perror(pci->fname); | |
2035 | continue; | |
2036 | } | |
e7c9f3ff NS |
2037 | } |
2038 | ||
7d747d22 | 2039 | printf("Input file %s added\n", pci->fname); |
73877e12 | 2040 | pdi->nfiles++; |
824c2b39 | 2041 | cpu_mark_online(pdi, pci->cpu); |
d0ca268b | 2042 | } |
d5396421 JA |
2043 | } |
2044 | ||
7d747d22 JA |
2045 | /* |
2046 | * now loop over the files reading in the data | |
2047 | */ | |
412819ce | 2048 | do { |
53c68c88 JA |
2049 | unsigned long long youngest; |
2050 | ||
7d747d22 | 2051 | events_added = 0; |
287fa3d6 | 2052 | last_allowed_time = -1ULL; |
a43c1c17 | 2053 | read_sequence++; |
d5396421 | 2054 | |
7d747d22 | 2055 | for (i = 0; i < ndevices; i++) { |
73877e12 | 2056 | pdi = &devices[i]; |
66930177 | 2057 | pdi->last_read_time = -1ULL; |
73877e12 NS |
2058 | |
2059 | for (j = 0; j < pdi->nfiles; j++) { | |
d5396421 | 2060 | |
73877e12 | 2061 | pci = get_cpu_info(pdi, j); |
d5396421 | 2062 | |
7d747d22 JA |
2063 | if (pci->fd == -1) |
2064 | continue; | |
51128a28 | 2065 | |
210824c3 JA |
2066 | pci->smallest_seq_read = -1; |
2067 | ||
c0e0dbc2 | 2068 | events = read_events(pci->fd, 1, &pci->fdblock); |
db7e0552 | 2069 | if (events <= 0) { |
824c2b39 | 2070 | cpu_mark_offline(pdi, pci->cpu); |
7d747d22 JA |
2071 | close(pci->fd); |
2072 | pci->fd = -1; | |
2073 | continue; | |
2074 | } | |
d5396421 | 2075 | |
287fa3d6 JA |
2076 | if (pdi->last_read_time < last_allowed_time) |
2077 | last_allowed_time = pdi->last_read_time; | |
d5396421 | 2078 | |
7d747d22 JA |
2079 | events_added += events; |
2080 | } | |
2ff323b0 | 2081 | } |
d5396421 | 2082 | |
53c68c88 JA |
2083 | if (sort_entries(&youngest)) |
2084 | break; | |
2085 | ||
2086 | if (youngest > stopwatch_end) | |
287fa3d6 JA |
2087 | break; |
2088 | ||
a649216c | 2089 | show_entries_rb(0); |
cb2a1a62 | 2090 | |
7d747d22 | 2091 | } while (events_added); |
d5396421 | 2092 | |
a649216c JA |
2093 | if (rb_sort_entries) |
2094 | show_entries_rb(1); | |
2095 | ||
7d747d22 | 2096 | return 0; |
412819ce | 2097 | } |
d5396421 | 2098 | |
412819ce JA |
2099 | static int do_stdin(void) |
2100 | { | |
53c68c88 | 2101 | unsigned long long youngest; |
c0e0dbc2 | 2102 | int fd, events, fdblock; |
d5396421 | 2103 | |
be925321 | 2104 | last_allowed_time = -1ULL; |
1f79c4a0 | 2105 | fd = dup(STDIN_FILENO); |
0b07f23e JA |
2106 | if (fd == -1) { |
2107 | perror("dup stdin"); | |
2108 | return -1; | |
2109 | } | |
d5396421 | 2110 | |
c0e0dbc2 | 2111 | fdblock = -1; |
db7e0552 | 2112 | while ((events = read_events(fd, 0, &fdblock)) > 0) { |
4ab42801 | 2113 | read_sequence++; |
412819ce | 2114 | |
210824c3 | 2115 | #if 0 |
0b07f23e | 2116 | smallest_seq_read = -1U; |
210824c3 | 2117 | #endif |
0b07f23e | 2118 | |
53c68c88 JA |
2119 | if (sort_entries(&youngest)) |
2120 | break; | |
2121 | ||
2122 | if (youngest > stopwatch_end) | |
2ff323b0 JA |
2123 | break; |
2124 | ||
763d936e | 2125 | show_entries_rb(0); |
0b07f23e | 2126 | } |
d5396421 | 2127 | |
a649216c JA |
2128 | if (rb_sort_entries) |
2129 | show_entries_rb(1); | |
2130 | ||
d5396421 | 2131 | close(fd); |
d5396421 JA |
2132 | return 0; |
2133 | } | |
d0ca268b | 2134 | |
cbc927b6 | 2135 | static void show_stats(void) |
412819ce | 2136 | { |
cbc927b6 JA |
2137 | if (!ofp) |
2138 | return; | |
2139 | if (stats_printed) | |
2140 | return; | |
2141 | ||
2142 | stats_printed = 1; | |
2143 | ||
2144 | if (per_process_stats) | |
2145 | show_process_stats(); | |
2146 | ||
2147 | if (per_device_and_cpu_stats) | |
2148 | show_device_and_cpu_stats(); | |
2149 | ||
152f6476 | 2150 | fflush(ofp); |
412819ce JA |
2151 | } |
2152 | ||
e820abd7 | 2153 | static void handle_sigint(__attribute__((__unused__)) int sig) |
412819ce JA |
2154 | { |
2155 | done = 1; | |
412819ce JA |
2156 | } |
2157 | ||
46e6968b NS |
2158 | /* |
2159 | * Extract start and duration times from a string, allowing | |
2160 | * us to specify a time interval of interest within a trace. | |
2161 | * Format: "duration" (start is zero) or "start:duration". | |
2162 | */ | |
2163 | static int find_stopwatch_interval(char *string) | |
2164 | { | |
2165 | double value; | |
2166 | char *sp; | |
2167 | ||
2168 | value = strtod(string, &sp); | |
2169 | if (sp == string) { | |
2170 | fprintf(stderr,"Invalid stopwatch timer: %s\n", string); | |
2171 | return 1; | |
2172 | } | |
2173 | if (*sp == ':') { | |
2174 | stopwatch_start = DOUBLE_TO_NANO_ULL(value); | |
2175 | string = sp + 1; | |
2176 | value = strtod(string, &sp); | |
2177 | if (sp == string || *sp != '\0') { | |
2178 | fprintf(stderr,"Invalid stopwatch duration time: %s\n", | |
2179 | string); | |
2180 | return 1; | |
2181 | } | |
2182 | } else if (*sp != '\0') { | |
2183 | fprintf(stderr,"Invalid stopwatch start timer: %s\n", string); | |
2184 | return 1; | |
2185 | } | |
1b928247 JA |
2186 | stopwatch_end = DOUBLE_TO_NANO_ULL(value); |
2187 | if (stopwatch_end <= stopwatch_start) { | |
2188 | fprintf(stderr, "Invalid stopwatch interval: %Lu -> %Lu\n", | |
2189 | stopwatch_start, stopwatch_end); | |
2190 | return 1; | |
2191 | } | |
2192 | ||
46e6968b NS |
2193 | return 0; |
2194 | } | |
2195 | ||
52724a0e JA |
2196 | static char usage_str[] = \ |
2197 | "[ -i <input name> ] [-o <output name> [ -s ] [ -t ] [ -q ]\n" \ | |
2198 | "[ -w start:stop ] [ -f output format ] [ -F format spec ] [ -v] \n\n" \ | |
2199 | "\t-i Input file containing trace data, or '-' for stdin\n" \ | |
d1d7f15f | 2200 | "\t-D Directory to prepend to input file names\n" \ |
52724a0e | 2201 | "\t-o Output file. If not given, output is stdout\n" \ |
a2594911 | 2202 | "\t-d Output file. If specified, binary data is written to file\n" \ |
52724a0e JA |
2203 | "\t-b stdin read batching\n" \ |
2204 | "\t-s Show per-program io statistics\n" \ | |
ac740d98 | 2205 | "\t-h Hash processes by name, not pid\n" \ |
52724a0e JA |
2206 | "\t-t Track individual ios. Will tell you the time a request took\n" \ |
2207 | "\t to get queued, to get dispatched, and to get completed\n" \ | |
2208 | "\t-q Quiet. Don't display any stats at the end of the trace\n" \ | |
2209 | "\t-w Only parse data between the given time interval in seconds.\n" \ | |
2210 | "\t If 'start' isn't given, blkparse defaults the start time to 0\n" \ | |
d915dee6 JA |
2211 | "\t-f Output format. Customize the output format. The format field\n" \ |
2212 | "\t identifies can be found in the documentation\n" \ | |
52724a0e | 2213 | "\t-F Format specification. Can be found in the documentation\n" \ |
57ea8602 JA |
2214 | "\t-v More verbose for marginal errors\n" \ |
2215 | "\t-V Print program version info\n\n"; | |
52724a0e | 2216 | |
1f79c4a0 JA |
2217 | static void usage(char *prog) |
2218 | { | |
52724a0e | 2219 | fprintf(stderr, "Usage: %s %s %s", prog, blkparse_version, usage_str); |
1f79c4a0 JA |
2220 | } |
2221 | ||
d5396421 JA |
2222 | int main(int argc, char *argv[]) |
2223 | { | |
152f6476 | 2224 | char *ofp_buffer; |
98f8386b | 2225 | int i, c, ret, mode; |
98f8386b | 2226 | int act_mask_tmp = 0; |
d5396421 JA |
2227 | |
2228 | while ((c = getopt_long(argc, argv, S_OPTS, l_opts, NULL)) != -1) { | |
2229 | switch (c) { | |
98f8386b AB |
2230 | case 'a': |
2231 | i = find_mask_map(optarg); | |
2232 | if (i < 0) { | |
2233 | fprintf(stderr,"Invalid action mask %s\n", | |
2234 | optarg); | |
2235 | return 1; | |
2236 | } | |
2237 | act_mask_tmp |= i; | |
2238 | break; | |
2239 | ||
2240 | case 'A': | |
2241 | if ((sscanf(optarg, "%x", &i) != 1) || | |
2242 | !valid_act_opt(i)) { | |
2243 | fprintf(stderr, | |
2244 | "Invalid set action mask %s/0x%x\n", | |
2245 | optarg, i); | |
2246 | return 1; | |
2247 | } | |
2248 | act_mask_tmp = i; | |
2249 | break; | |
d5396421 | 2250 | case 'i': |
e7c9f3ff NS |
2251 | if (!strcmp(optarg, "-") && !pipeline) |
2252 | pipeline = 1; | |
2253 | else if (resize_devices(optarg) != 0) | |
2254 | return 1; | |
d5396421 | 2255 | break; |
d1d7f15f JA |
2256 | case 'D': |
2257 | input_dir = optarg; | |
2258 | break; | |
d5396421 | 2259 | case 'o': |
66efebf8 | 2260 | output_name = optarg; |
d5396421 | 2261 | break; |
79f19470 JA |
2262 | case 'b': |
2263 | rb_batch = atoi(optarg); | |
2264 | if (rb_batch <= 0) | |
2265 | rb_batch = RB_BATCH_DEFAULT; | |
2266 | break; | |
152f6476 JA |
2267 | case 's': |
2268 | per_process_stats = 1; | |
2269 | break; | |
7997c5b0 JA |
2270 | case 't': |
2271 | track_ios = 1; | |
2272 | break; | |
1e1c60f1 NS |
2273 | case 'q': |
2274 | per_device_and_cpu_stats = 0; | |
2275 | break; | |
46e6968b NS |
2276 | case 'w': |
2277 | if (find_stopwatch_interval(optarg) != 0) | |
2278 | return 1; | |
2279 | break; | |
ab197ca7 AB |
2280 | case 'f': |
2281 | set_all_format_specs(optarg); | |
2282 | break; | |
2283 | case 'F': | |
2284 | if (add_format_spec(optarg) != 0) | |
2285 | return 1; | |
2286 | break; | |
d915dee6 | 2287 | case 'h': |
715d8021 | 2288 | ppi_hash_by_pid = 0; |
bf0720af | 2289 | break; |
52724a0e | 2290 | case 'v': |
57ea8602 JA |
2291 | verbose++; |
2292 | break; | |
2293 | case 'V': | |
52724a0e JA |
2294 | printf("%s version %s\n", argv[0], blkparse_version); |
2295 | return 0; | |
a2594911 AB |
2296 | case 'd': |
2297 | dump_binary = optarg; | |
2298 | break; | |
d5396421 | 2299 | default: |
1f79c4a0 | 2300 | usage(argv[0]); |
d5396421 JA |
2301 | return 1; |
2302 | } | |
d0ca268b JA |
2303 | } |
2304 | ||
e7c9f3ff NS |
2305 | while (optind < argc) { |
2306 | if (!strcmp(argv[optind], "-") && !pipeline) | |
2307 | pipeline = 1; | |
2308 | else if (resize_devices(argv[optind]) != 0) | |
2309 | return 1; | |
2310 | optind++; | |
2311 | } | |
2312 | ||
2313 | if (!pipeline && !ndevices) { | |
1f79c4a0 | 2314 | usage(argv[0]); |
d5396421 JA |
2315 | return 1; |
2316 | } | |
2317 | ||
98f8386b AB |
2318 | if (act_mask_tmp != 0) |
2319 | act_mask = act_mask_tmp; | |
2320 | ||
7997c5b0 | 2321 | memset(&rb_sort_root, 0, sizeof(rb_sort_root)); |
412819ce JA |
2322 | |
2323 | signal(SIGINT, handle_sigint); | |
2324 | signal(SIGHUP, handle_sigint); | |
2325 | signal(SIGTERM, handle_sigint); | |
d5396421 | 2326 | |
d69db225 JA |
2327 | setlocale(LC_NUMERIC, "en_US"); |
2328 | ||
a66877e6 | 2329 | if (!output_name) { |
152f6476 | 2330 | ofp = fdopen(STDOUT_FILENO, "w"); |
a66877e6 JA |
2331 | mode = _IOLBF; |
2332 | } else { | |
152f6476 JA |
2333 | char ofname[128]; |
2334 | ||
7a9690c0 | 2335 | snprintf(ofname, sizeof(ofname) - 1, "%s", output_name); |
152f6476 | 2336 | ofp = fopen(ofname, "w"); |
a66877e6 | 2337 | mode = _IOFBF; |
152f6476 JA |
2338 | } |
2339 | ||
2340 | if (!ofp) { | |
2341 | perror("fopen"); | |
2342 | return 1; | |
2343 | } | |
2344 | ||
2345 | ofp_buffer = malloc(4096); | |
a66877e6 | 2346 | if (setvbuf(ofp, ofp_buffer, mode, 4096)) { |
152f6476 JA |
2347 | perror("setvbuf"); |
2348 | return 1; | |
2349 | } | |
2350 | ||
a2594911 AB |
2351 | if (dump_binary) { |
2352 | dump_fd = creat(dump_binary, 0666); | |
2353 | if (dump_fd < 0) { | |
2354 | perror(dump_binary); | |
2355 | dump_binary = NULL; | |
2356 | return 1; | |
2357 | } | |
2358 | } | |
2359 | ||
e7c9f3ff | 2360 | if (pipeline) |
d5396421 JA |
2361 | ret = do_stdin(); |
2362 | else | |
2363 | ret = do_file(); | |
2364 | ||
cbc927b6 | 2365 | show_stats(); |
eb9bd4e9 | 2366 | free(ofp_buffer); |
d5396421 | 2367 | return ret; |
d0ca268b | 2368 | } |