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