Commit | Line | Data |
---|---|---|
d0ca268b JA |
1 | /* |
2 | * block queue tracing application | |
3 | * | |
d956a2cd JA |
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 | * | |
d0ca268b JA |
20 | */ |
21 | #include <pthread.h> | |
22 | #include <sys/types.h> | |
23 | #include <sys/stat.h> | |
24 | #include <unistd.h> | |
25 | #include <locale.h> | |
26 | #include <signal.h> | |
27 | #include <fcntl.h> | |
28 | #include <string.h> | |
29 | #include <sys/ioctl.h> | |
b9d4294e | 30 | #include <sys/param.h> |
e3e74029 | 31 | #include <sys/statfs.h> |
eb3c8108 | 32 | #include <sys/poll.h> |
b7106311 | 33 | #include <sys/mman.h> |
8e86c98a | 34 | #include <sys/socket.h> |
d0ca268b JA |
35 | #include <stdio.h> |
36 | #include <stdlib.h> | |
37 | #include <sched.h> | |
d39c04ca AB |
38 | #include <ctype.h> |
39 | #include <getopt.h> | |
da39451f | 40 | #include <errno.h> |
8e86c98a JA |
41 | #include <netinet/in.h> |
42 | #include <arpa/inet.h> | |
43 | #include <netdb.h> | |
32f18c48 | 44 | #include <sys/sendfile.h> |
d0ca268b JA |
45 | |
46 | #include "blktrace.h" | |
21f55651 | 47 | #include "barrier.h" |
d0ca268b | 48 | |
a3225fed | 49 | static char blktrace_version[] = "0.99.1"; |
52724a0e | 50 | |
8f551a39 JA |
51 | /* |
52 | * You may want to increase this even more, if you are logging at a high | |
53 | * rate and see skipped/missed events | |
54 | */ | |
007c233c | 55 | #define BUF_SIZE (512 * 1024) |
d0ca268b JA |
56 | #define BUF_NR (4) |
57 | ||
007c233c JA |
58 | #define OFILE_BUF (128 * 1024) |
59 | ||
3d06efea | 60 | #define DEBUGFS_TYPE 0x64626720 |
e3e74029 | 61 | |
32f18c48 | 62 | #define S_OPTS "d:a:A:r:o:kw:Vb:n:D:lh:p:s" |
d5396421 | 63 | static struct option l_opts[] = { |
5c86134e | 64 | { |
d39c04ca | 65 | .name = "dev", |
428683db | 66 | .has_arg = required_argument, |
d39c04ca AB |
67 | .flag = NULL, |
68 | .val = 'd' | |
69 | }, | |
5c86134e | 70 | { |
d39c04ca | 71 | .name = "act-mask", |
428683db | 72 | .has_arg = required_argument, |
d39c04ca AB |
73 | .flag = NULL, |
74 | .val = 'a' | |
75 | }, | |
5c86134e | 76 | { |
d39c04ca | 77 | .name = "set-mask", |
428683db | 78 | .has_arg = required_argument, |
d39c04ca AB |
79 | .flag = NULL, |
80 | .val = 'A' | |
81 | }, | |
5c86134e | 82 | { |
5270dddd | 83 | .name = "relay", |
428683db | 84 | .has_arg = required_argument, |
5270dddd JA |
85 | .flag = NULL, |
86 | .val = 'r' | |
87 | }, | |
d5396421 JA |
88 | { |
89 | .name = "output", | |
428683db | 90 | .has_arg = required_argument, |
d5396421 JA |
91 | .flag = NULL, |
92 | .val = 'o' | |
93 | }, | |
bc39777c JA |
94 | { |
95 | .name = "kill", | |
428683db | 96 | .has_arg = no_argument, |
bc39777c JA |
97 | .flag = NULL, |
98 | .val = 'k' | |
99 | }, | |
ece238a6 NS |
100 | { |
101 | .name = "stopwatch", | |
428683db | 102 | .has_arg = required_argument, |
ece238a6 NS |
103 | .flag = NULL, |
104 | .val = 'w' | |
105 | }, | |
52724a0e JA |
106 | { |
107 | .name = "version", | |
108 | .has_arg = no_argument, | |
109 | .flag = NULL, | |
57ea8602 | 110 | .val = 'V' |
52724a0e | 111 | }, |
129aa440 | 112 | { |
3f65c585 | 113 | .name = "buffer-size", |
129aa440 JA |
114 | .has_arg = required_argument, |
115 | .flag = NULL, | |
116 | .val = 'b' | |
117 | }, | |
118 | { | |
3f65c585 | 119 | .name = "num-sub-buffers", |
129aa440 JA |
120 | .has_arg = required_argument, |
121 | .flag = NULL, | |
122 | .val = 'n' | |
123 | }, | |
d1d7f15f | 124 | { |
3f65c585 | 125 | .name = "output-dir", |
d1d7f15f JA |
126 | .has_arg = required_argument, |
127 | .flag = NULL, | |
128 | .val = 'D' | |
129 | }, | |
8e86c98a JA |
130 | { |
131 | .name = "listen", | |
132 | .has_arg = no_argument, | |
133 | .flag = NULL, | |
134 | .val = 'l' | |
135 | }, | |
136 | { | |
137 | .name = "host", | |
138 | .has_arg = required_argument, | |
139 | .flag = NULL, | |
140 | .val = 'h' | |
141 | }, | |
142 | { | |
143 | .name = "port", | |
144 | .has_arg = required_argument, | |
145 | .flag = NULL, | |
146 | .val = 'p' | |
147 | }, | |
32f18c48 | 148 | { |
79971f43 | 149 | .name = "no-sendfile", |
32f18c48 JA |
150 | .has_arg = no_argument, |
151 | .flag = NULL, | |
152 | .val = 's' | |
153 | }, | |
71ef8b7c JA |
154 | { |
155 | .name = NULL, | |
156 | } | |
d39c04ca AB |
157 | }; |
158 | ||
9db17354 | 159 | struct tip_subbuf { |
9db17354 | 160 | void *buf; |
5be4bdaf JA |
161 | unsigned int len; |
162 | unsigned int max_len; | |
9db17354 JA |
163 | }; |
164 | ||
21f55651 JA |
165 | #define FIFO_SIZE (1024) /* should be plenty big! */ |
166 | #define CL_SIZE (128) /* cache line, any bigger? */ | |
167 | ||
168 | struct tip_subbuf_fifo { | |
169 | int tail __attribute__((aligned(CL_SIZE))); | |
170 | int head __attribute__((aligned(CL_SIZE))); | |
171 | struct tip_subbuf *q[FIFO_SIZE]; | |
172 | }; | |
173 | ||
d0ca268b JA |
174 | struct thread_information { |
175 | int cpu; | |
176 | pthread_t thread; | |
b9d4294e JA |
177 | |
178 | int fd; | |
a3e4d330 | 179 | void *fd_buf; |
b9d4294e JA |
180 | char fn[MAXPATHLEN + 64]; |
181 | ||
007c233c JA |
182 | FILE *ofile; |
183 | char *ofile_buffer; | |
32f18c48 | 184 | off_t ofile_offset; |
9db17354 | 185 | int ofile_stdout; |
8e86c98a | 186 | int ofile_mmap; |
007c233c | 187 | |
0cc7d25e JA |
188 | int (*get_subbuf)(struct thread_information *, unsigned int); |
189 | int (*flush_subbuf)(struct thread_information *, struct tip_subbuf *); | |
190 | int (*read_data)(struct thread_information *, void *, unsigned int); | |
191 | ||
d0ca268b | 192 | unsigned long events_processed; |
b7106311 | 193 | unsigned long long data_read; |
bcbeb60f | 194 | unsigned long long data_queued; |
e7c9f3ff | 195 | struct device_information *device; |
9db17354 JA |
196 | |
197 | int exited; | |
198 | ||
b7106311 JA |
199 | /* |
200 | * piped fifo buffers | |
201 | */ | |
21f55651 | 202 | struct tip_subbuf_fifo fifo; |
7de86b12 | 203 | struct tip_subbuf *leftover_ts; |
b7106311 JA |
204 | |
205 | /* | |
206 | * mmap controlled output files | |
207 | */ | |
208 | unsigned long long fs_size; | |
209 | unsigned long long fs_max_size; | |
210 | unsigned long fs_off; | |
211 | void *fs_buf; | |
212 | unsigned long fs_buf_len; | |
ff11d54c TZ |
213 | |
214 | struct net_connection *nc; | |
d0ca268b JA |
215 | }; |
216 | ||
e7c9f3ff NS |
217 | struct device_information { |
218 | int fd; | |
219 | char *path; | |
220 | char buts_name[32]; | |
99c1f5ab | 221 | volatile int trace_started; |
eb3c8108 | 222 | unsigned long drop_count; |
e7c9f3ff | 223 | struct thread_information *threads; |
ff11d54c TZ |
224 | |
225 | struct cl_host *ch; | |
226 | u32 cl_id; | |
227 | time_t cl_connect_time; | |
e7c9f3ff | 228 | }; |
d0ca268b | 229 | |
e7c9f3ff | 230 | static int ncpus; |
d0ca268b | 231 | static struct thread_information *thread_information; |
e7c9f3ff NS |
232 | static int ndevs; |
233 | static struct device_information *device_information; | |
234 | ||
235 | /* command line option globals */ | |
3d06efea | 236 | static char *debugfs_path; |
d5396421 | 237 | static char *output_name; |
d1d7f15f | 238 | static char *output_dir; |
5c86134e | 239 | static int act_mask = ~0U; |
bc39777c | 240 | static int kill_running_trace; |
eb3c8108 JA |
241 | static unsigned long buf_size = BUF_SIZE; |
242 | static unsigned long buf_nr = BUF_NR; | |
b7106311 | 243 | static unsigned int page_size; |
d39c04ca | 244 | |
e7c9f3ff NS |
245 | #define is_done() (*(volatile int *)(&done)) |
246 | static volatile int done; | |
247 | ||
eb3c8108 JA |
248 | #define is_trace_stopped() (*(volatile int *)(&trace_stopped)) |
249 | static volatile int trace_stopped; | |
250 | ||
251 | #define is_stat_shown() (*(volatile int *)(&stat_shown)) | |
252 | static volatile int stat_shown; | |
a3e4d330 | 253 | |
8e86c98a JA |
254 | int data_is_native = -1; |
255 | ||
72ca8801 NS |
256 | static void exit_trace(int status); |
257 | ||
99c1f5ab JA |
258 | #define dip_tracing(dip) (*(volatile int *)(&(dip)->trace_started)) |
259 | #define dip_set_tracing(dip, v) ((dip)->trace_started = (v)) | |
260 | ||
ce020676 | 261 | #define __for_each_dip(__d, __di, __e, __i) \ |
e0a1988b JA |
262 | for (__i = 0, __d = __di; __i < __e; __i++, __d++) |
263 | ||
264 | #define for_each_dip(__d, __i) \ | |
ce020676 | 265 | __for_each_dip(__d, device_information, ndevs, __i) |
e0a1988b | 266 | #define for_each_nc_dip(__nc, __d, __i) \ |
ff11d54c | 267 | __for_each_dip(__d, (__nc)->ch->device_information, (__nc)->ch->ndevs, __i) |
99c1f5ab | 268 | |
ce020676 JA |
269 | #define __for_each_tip(__d, __t, __ncpus, __j) \ |
270 | for (__j = 0, __t = (__d)->threads; __j < __ncpus; __j++, __t++) | |
9db17354 | 271 | #define for_each_tip(__d, __t, __j) \ |
ce020676 | 272 | __for_each_tip(__d, __t, ncpus, __j) |
ff11d54c TZ |
273 | #define for_each_cl_host(__c) \ |
274 | for (__c = cl_host_list; __c; __c = __c->list_next) | |
99c1f5ab | 275 | |
8e86c98a JA |
276 | /* |
277 | * networking stuff follows. we include a magic number so we know whether | |
278 | * to endianness convert or not | |
279 | */ | |
280 | struct blktrace_net_hdr { | |
281 | u32 magic; /* same as trace magic */ | |
22cd0c02 | 282 | char buts_name[32]; /* trace name */ |
8e86c98a | 283 | u32 cpu; /* for which cpu */ |
22cd0c02 | 284 | u32 max_cpus; |
8e86c98a | 285 | u32 len; /* length of following trace data */ |
ff11d54c | 286 | u32 cl_id; /* id for set of client per-cpu connections */ |
8e86c98a JA |
287 | }; |
288 | ||
289 | #define TRACE_NET_PORT (8462) | |
290 | ||
291 | enum { | |
292 | Net_none = 0, | |
293 | Net_server, | |
294 | Net_client, | |
295 | }; | |
296 | ||
297 | /* | |
298 | * network cmd line params | |
299 | */ | |
300 | static char hostname[MAXHOSTNAMELEN]; | |
301 | static int net_port = TRACE_NET_PORT; | |
302 | static int net_mode = 0; | |
79971f43 | 303 | static int net_use_sendfile = 1; |
8e86c98a | 304 | |
ff11d54c TZ |
305 | struct cl_host { |
306 | struct cl_host *list_next; | |
e0a1988b | 307 | struct in_addr cl_in_addr; |
ff11d54c TZ |
308 | struct net_connection *net_connections; |
309 | int nconn; | |
e0a1988b JA |
310 | struct device_information *device_information; |
311 | int ndevs; | |
312 | int ncpus; | |
ff11d54c | 313 | int ndevs_done; |
e0a1988b JA |
314 | }; |
315 | ||
ff11d54c TZ |
316 | struct net_connection { |
317 | int in_fd; | |
318 | struct pollfd pfd; | |
319 | time_t connect_time; | |
320 | struct cl_host *ch; | |
321 | int ncpus; | |
322 | }; | |
323 | ||
324 | #define NET_MAX_CL_HOSTS (1024) | |
325 | static struct cl_host *cl_host_list; | |
326 | static int cl_hosts; | |
e0a1988b | 327 | static int net_connects; |
ff11d54c TZ |
328 | |
329 | static int *net_out_fd; | |
8e86c98a JA |
330 | |
331 | static void handle_sigint(__attribute__((__unused__)) int sig) | |
332 | { | |
7035d92d JA |
333 | struct device_information *dip; |
334 | int i; | |
335 | ||
336 | /* | |
337 | * stop trace so we can reap currently produced data | |
338 | */ | |
339 | for_each_dip(dip, i) { | |
921b05fe JA |
340 | if (dip->fd == -1) |
341 | continue; | |
7035d92d JA |
342 | if (ioctl(dip->fd, BLKTRACESTOP) < 0) |
343 | perror("BLKTRACESTOP"); | |
344 | } | |
345 | ||
8e86c98a JA |
346 | done = 1; |
347 | } | |
348 | ||
eb3c8108 JA |
349 | static int get_dropped_count(const char *buts_name) |
350 | { | |
351 | int fd; | |
352 | char tmp[MAXPATHLEN + 64]; | |
353 | ||
354 | snprintf(tmp, sizeof(tmp), "%s/block/%s/dropped", | |
3d06efea | 355 | debugfs_path, buts_name); |
eb3c8108 JA |
356 | |
357 | fd = open(tmp, O_RDONLY); | |
358 | if (fd < 0) { | |
359 | /* | |
360 | * this may be ok, if the kernel doesn't support dropped counts | |
361 | */ | |
362 | if (errno == ENOENT) | |
363 | return 0; | |
364 | ||
365 | fprintf(stderr, "Couldn't open dropped file %s\n", tmp); | |
366 | return -1; | |
367 | } | |
368 | ||
369 | if (read(fd, tmp, sizeof(tmp)) < 0) { | |
370 | perror(tmp); | |
371 | close(fd); | |
372 | return -1; | |
373 | } | |
374 | ||
375 | close(fd); | |
376 | ||
377 | return atoi(tmp); | |
378 | } | |
379 | ||
e7c9f3ff | 380 | static int start_trace(struct device_information *dip) |
d0ca268b JA |
381 | { |
382 | struct blk_user_trace_setup buts; | |
383 | ||
1f79c4a0 | 384 | memset(&buts, 0, sizeof(buts)); |
129aa440 JA |
385 | buts.buf_size = buf_size; |
386 | buts.buf_nr = buf_nr; | |
d39c04ca | 387 | buts.act_mask = act_mask; |
d0ca268b | 388 | |
ed71a31e JA |
389 | if (ioctl(dip->fd, BLKTRACESETUP, &buts) < 0) { |
390 | perror("BLKTRACESETUP"); | |
391 | return 1; | |
392 | } | |
393 | ||
394 | if (ioctl(dip->fd, BLKTRACESTART) < 0) { | |
395 | perror("BLKTRACESTART"); | |
d0ca268b JA |
396 | return 1; |
397 | } | |
398 | ||
e7c9f3ff | 399 | memcpy(dip->buts_name, buts.name, sizeof(dip->buts_name)); |
99c1f5ab | 400 | dip_set_tracing(dip, 1); |
d0ca268b JA |
401 | return 0; |
402 | } | |
403 | ||
e7c9f3ff | 404 | static void stop_trace(struct device_information *dip) |
d0ca268b | 405 | { |
99c1f5ab JA |
406 | if (dip_tracing(dip) || kill_running_trace) { |
407 | dip_set_tracing(dip, 0); | |
cf9208ea | 408 | |
7035d92d JA |
409 | /* |
410 | * should be stopped, just don't complain if it isn't | |
411 | */ | |
412 | ioctl(dip->fd, BLKTRACESTOP); | |
413 | ||
ed71a31e JA |
414 | if (ioctl(dip->fd, BLKTRACETEARDOWN) < 0) |
415 | perror("BLKTRACETEARDOWN"); | |
cf9208ea | 416 | |
e7c9f3ff | 417 | close(dip->fd); |
cf9208ea | 418 | dip->fd = -1; |
707b0914 | 419 | } |
d0ca268b JA |
420 | } |
421 | ||
e7c9f3ff NS |
422 | static void stop_all_traces(void) |
423 | { | |
424 | struct device_information *dip; | |
425 | int i; | |
426 | ||
eb3c8108 JA |
427 | for_each_dip(dip, i) { |
428 | dip->drop_count = get_dropped_count(dip->buts_name); | |
e7c9f3ff | 429 | stop_trace(dip); |
eb3c8108 | 430 | } |
e7c9f3ff NS |
431 | } |
432 | ||
ff11d54c | 433 | static void wait_for_data(struct thread_information *tip, int timeout) |
eb3c8108 | 434 | { |
ff11d54c | 435 | struct pollfd pfd = { .fd = tip->fd, .events = POLLIN }; |
eb3c8108 | 436 | |
ff11d54c TZ |
437 | while (!is_done()) { |
438 | if (poll(&pfd, 1, timeout) < 0) { | |
7934e668 JA |
439 | perror("poll"); |
440 | break; | |
441 | } | |
ff11d54c | 442 | if (pfd.revents & POLLIN) |
9db17354 JA |
443 | break; |
444 | if (tip->ofile_stdout) | |
445 | break; | |
ff11d54c | 446 | } |
eb3c8108 JA |
447 | } |
448 | ||
0cc7d25e JA |
449 | static int read_data_file(struct thread_information *tip, void *buf, |
450 | unsigned int len) | |
d0ca268b | 451 | { |
ae9f71b3 | 452 | int ret = 0; |
bbabf03a | 453 | |
9db17354 | 454 | do { |
ff11d54c | 455 | wait_for_data(tip, 100); |
ae9f71b3 | 456 | |
9db17354 JA |
457 | ret = read(tip->fd, buf, len); |
458 | if (!ret) | |
459 | continue; | |
460 | else if (ret > 0) | |
461 | return ret; | |
462 | else { | |
bbabf03a | 463 | if (errno != EAGAIN) { |
a3e4d330 JA |
464 | perror(tip->fn); |
465 | fprintf(stderr,"Thread %d failed read of %s\n", | |
466 | tip->cpu, tip->fn); | |
467 | break; | |
468 | } | |
9db17354 | 469 | continue; |
bbabf03a | 470 | } |
9db17354 | 471 | } while (!is_done()); |
8a43bac5 | 472 | |
bbabf03a | 473 | return ret; |
8e86c98a | 474 | |
8a43bac5 JA |
475 | } |
476 | ||
0cc7d25e JA |
477 | static int read_data_net(struct thread_information *tip, void *buf, |
478 | unsigned int len) | |
8e86c98a | 479 | { |
ff11d54c | 480 | struct net_connection *nc = tip->nc; |
8e86c98a JA |
481 | unsigned int bytes_left = len; |
482 | int ret = 0; | |
483 | ||
484 | do { | |
e0a1988b | 485 | ret = recv(nc->in_fd, buf, bytes_left, MSG_WAITALL); |
8e86c98a JA |
486 | |
487 | if (!ret) | |
488 | continue; | |
489 | else if (ret < 0) { | |
490 | if (errno != EAGAIN) { | |
491 | perror(tip->fn); | |
492 | fprintf(stderr, "server: failed read\n"); | |
493 | return 0; | |
494 | } | |
495 | continue; | |
496 | } else { | |
497 | buf += ret; | |
498 | bytes_left -= ret; | |
499 | } | |
500 | } while (!is_done() && bytes_left); | |
501 | ||
410d7c62 | 502 | return len - bytes_left; |
8e86c98a JA |
503 | } |
504 | ||
8e86c98a JA |
505 | static inline struct tip_subbuf * |
506 | subbuf_fifo_dequeue(struct thread_information *tip) | |
a3e4d330 | 507 | { |
21f55651 JA |
508 | const int head = tip->fifo.head; |
509 | const int next = (head + 1) & (FIFO_SIZE - 1); | |
510 | ||
511 | if (head != tip->fifo.tail) { | |
512 | struct tip_subbuf *ts = tip->fifo.q[head]; | |
513 | ||
514 | store_barrier(); | |
515 | tip->fifo.head = next; | |
516 | return ts; | |
517 | } | |
518 | ||
519 | return NULL; | |
9db17354 | 520 | } |
eb3c8108 | 521 | |
21f55651 JA |
522 | static inline int subbuf_fifo_queue(struct thread_information *tip, |
523 | struct tip_subbuf *ts) | |
9db17354 | 524 | { |
21f55651 JA |
525 | const int tail = tip->fifo.tail; |
526 | const int next = (tail + 1) & (FIFO_SIZE - 1); | |
527 | ||
528 | if (next != tip->fifo.head) { | |
529 | tip->fifo.q[tail] = ts; | |
530 | store_barrier(); | |
531 | tip->fifo.tail = next; | |
532 | return 0; | |
533 | } | |
534 | ||
535 | fprintf(stderr, "fifo too small!\n"); | |
536 | return 1; | |
a3e4d330 JA |
537 | } |
538 | ||
b7106311 JA |
539 | /* |
540 | * For file output, truncate and mmap the file appropriately | |
541 | */ | |
8e86c98a | 542 | static int mmap_subbuf(struct thread_information *tip, unsigned int maxlen) |
b7106311 JA |
543 | { |
544 | int ofd = fileno(tip->ofile); | |
545 | int ret; | |
546 | ||
547 | /* | |
548 | * extend file, if we have to. use chunks of 16 subbuffers. | |
549 | */ | |
550 | if (tip->fs_off + buf_size > tip->fs_buf_len) { | |
551 | if (tip->fs_buf) { | |
5975d309 | 552 | munlock(tip->fs_buf, tip->fs_buf_len); |
b7106311 JA |
553 | munmap(tip->fs_buf, tip->fs_buf_len); |
554 | tip->fs_buf = NULL; | |
555 | } | |
556 | ||
557 | tip->fs_off = tip->fs_size & (page_size - 1); | |
558 | tip->fs_buf_len = (16 * buf_size) - tip->fs_off; | |
559 | tip->fs_max_size += tip->fs_buf_len; | |
560 | ||
561 | if (ftruncate(ofd, tip->fs_max_size) < 0) { | |
562 | perror("ftruncate"); | |
563 | return -1; | |
564 | } | |
565 | ||
566 | tip->fs_buf = mmap(NULL, tip->fs_buf_len, PROT_WRITE, | |
567 | MAP_SHARED, ofd, tip->fs_size - tip->fs_off); | |
568 | if (tip->fs_buf == MAP_FAILED) { | |
569 | perror("mmap"); | |
570 | return -1; | |
571 | } | |
5975d309 | 572 | mlock(tip->fs_buf, tip->fs_buf_len); |
b7106311 JA |
573 | } |
574 | ||
7934e668 | 575 | ret = tip->read_data(tip, tip->fs_buf + tip->fs_off, maxlen); |
b7106311 | 576 | if (ret >= 0) { |
dbfbd6db | 577 | tip->data_read += ret; |
b7106311 JA |
578 | tip->fs_size += ret; |
579 | tip->fs_off += ret; | |
580 | return 0; | |
581 | } | |
582 | ||
583 | return -1; | |
584 | } | |
585 | ||
18eed2a7 JA |
586 | /* |
587 | * Use the copy approach for pipes and network | |
588 | */ | |
589 | static int get_subbuf(struct thread_information *tip, unsigned int maxlen) | |
590 | { | |
591 | struct tip_subbuf *ts = malloc(sizeof(*ts)); | |
592 | int ret; | |
593 | ||
594 | ts->buf = malloc(buf_size); | |
595 | ts->max_len = maxlen; | |
596 | ||
7934e668 | 597 | ret = tip->read_data(tip, ts->buf, ts->max_len); |
18eed2a7 JA |
598 | if (ret > 0) { |
599 | ts->len = ret; | |
dbfbd6db | 600 | tip->data_read += ret; |
7035d92d | 601 | if (subbuf_fifo_queue(tip, ts)) |
2f064793 JA |
602 | ret = -1; |
603 | } | |
604 | ||
605 | if (ret <= 0) { | |
606 | free(ts->buf); | |
607 | free(ts); | |
18eed2a7 JA |
608 | } |
609 | ||
610 | return ret; | |
611 | } | |
612 | ||
9db17354 | 613 | static void close_thread(struct thread_information *tip) |
a3e4d330 | 614 | { |
9db17354 JA |
615 | if (tip->fd != -1) |
616 | close(tip->fd); | |
617 | if (tip->ofile) | |
618 | fclose(tip->ofile); | |
619 | if (tip->ofile_buffer) | |
620 | free(tip->ofile_buffer); | |
621 | if (tip->fd_buf) | |
622 | free(tip->fd_buf); | |
1c99bc21 | 623 | |
9db17354 JA |
624 | tip->fd = -1; |
625 | tip->ofile = NULL; | |
626 | tip->ofile_buffer = NULL; | |
627 | tip->fd_buf = NULL; | |
a3e4d330 JA |
628 | } |
629 | ||
8e86c98a JA |
630 | static void tip_ftrunc_final(struct thread_information *tip) |
631 | { | |
632 | /* | |
633 | * truncate to right size and cleanup mmap | |
634 | */ | |
c196b5f2 | 635 | if (tip->ofile_mmap && tip->ofile) { |
8e86c98a JA |
636 | int ofd = fileno(tip->ofile); |
637 | ||
638 | if (tip->fs_buf) | |
639 | munmap(tip->fs_buf, tip->fs_buf_len); | |
640 | ||
641 | ftruncate(ofd, tip->fs_size); | |
642 | } | |
643 | } | |
644 | ||
9db17354 | 645 | static void *thread_main(void *arg) |
a3e4d330 | 646 | { |
9db17354 JA |
647 | struct thread_information *tip = arg; |
648 | pid_t pid = getpid(); | |
649 | cpu_set_t cpu_mask; | |
a3e4d330 | 650 | |
9db17354 JA |
651 | CPU_ZERO(&cpu_mask); |
652 | CPU_SET((tip->cpu), &cpu_mask); | |
a3e4d330 | 653 | |
9db17354 JA |
654 | if (sched_setaffinity(pid, sizeof(cpu_mask), &cpu_mask) == -1) { |
655 | perror("sched_setaffinity"); | |
656 | exit_trace(1); | |
657 | } | |
a3e4d330 | 658 | |
9db17354 | 659 | snprintf(tip->fn, sizeof(tip->fn), "%s/block/%s/trace%d", |
3d06efea | 660 | debugfs_path, tip->device->buts_name, tip->cpu); |
9db17354 JA |
661 | tip->fd = open(tip->fn, O_RDONLY); |
662 | if (tip->fd < 0) { | |
663 | perror(tip->fn); | |
664 | fprintf(stderr,"Thread %d failed open of %s\n", tip->cpu, | |
665 | tip->fn); | |
666 | exit_trace(1); | |
a3e4d330 JA |
667 | } |
668 | ||
b7106311 | 669 | while (!is_done()) { |
7035d92d | 670 | if (tip->get_subbuf(tip, buf_size) < 0) |
0cc7d25e | 671 | break; |
b7106311 JA |
672 | } |
673 | ||
7035d92d JA |
674 | /* |
675 | * trace is stopped, pull data until we get a short read | |
676 | */ | |
677 | while (tip->get_subbuf(tip, buf_size) > 0) | |
678 | ; | |
679 | ||
8e86c98a JA |
680 | tip_ftrunc_final(tip); |
681 | tip->exited = 1; | |
682 | return NULL; | |
683 | } | |
b7106311 | 684 | |
8e86c98a JA |
685 | static int write_data_net(int fd, void *buf, unsigned int buf_len) |
686 | { | |
687 | unsigned int bytes_left = buf_len; | |
688 | int ret; | |
b7106311 | 689 | |
8e86c98a JA |
690 | while (bytes_left) { |
691 | ret = send(fd, buf, bytes_left, 0); | |
692 | if (ret < 0) { | |
693 | perror("send"); | |
694 | return 1; | |
695 | } | |
696 | ||
697 | buf += ret; | |
698 | bytes_left -= ret; | |
9db17354 | 699 | } |
a3e4d330 | 700 | |
8e86c98a | 701 | return 0; |
a3e4d330 JA |
702 | } |
703 | ||
32f18c48 | 704 | static int net_send_header(struct thread_information *tip, unsigned int len) |
8e86c98a JA |
705 | { |
706 | struct blktrace_net_hdr hdr; | |
8e86c98a JA |
707 | |
708 | hdr.magic = BLK_IO_TRACE_MAGIC; | |
22cd0c02 | 709 | strcpy(hdr.buts_name, tip->device->buts_name); |
8e86c98a | 710 | hdr.cpu = tip->cpu; |
22cd0c02 | 711 | hdr.max_cpus = ncpus; |
32f18c48 | 712 | hdr.len = len; |
ff11d54c | 713 | hdr.cl_id = getpid(); |
8e86c98a | 714 | |
ff11d54c | 715 | return write_data_net(net_out_fd[tip->cpu], &hdr, sizeof(hdr)); |
32f18c48 | 716 | } |
8e86c98a | 717 | |
6a752c90 JA |
718 | /* |
719 | * send header with 0 length to signal end-of-run | |
720 | */ | |
721 | static void net_client_send_close(void) | |
722 | { | |
7934e668 | 723 | struct device_information *dip; |
6a752c90 | 724 | struct blktrace_net_hdr hdr; |
7934e668 | 725 | int i; |
6a752c90 | 726 | |
7934e668 | 727 | for_each_dip(dip, i) { |
7ab2f837 JA |
728 | hdr.magic = BLK_IO_TRACE_MAGIC; |
729 | hdr.max_cpus = ncpus; | |
730 | hdr.len = 0; | |
7934e668 | 731 | strcpy(hdr.buts_name, dip->buts_name); |
7ab2f837 | 732 | hdr.cpu = get_dropped_count(dip->buts_name); |
ff11d54c | 733 | hdr.cl_id = getpid(); |
7ab2f837 | 734 | |
ff11d54c | 735 | write_data_net(net_out_fd[0], &hdr, sizeof(hdr)); |
7934e668 JA |
736 | } |
737 | ||
6a752c90 JA |
738 | } |
739 | ||
32f18c48 JA |
740 | static int flush_subbuf_net(struct thread_information *tip, |
741 | struct tip_subbuf *ts) | |
742 | { | |
743 | if (net_send_header(tip, ts->len)) | |
7934e668 | 744 | return -1; |
ff11d54c | 745 | if (write_data_net(net_out_fd[tip->cpu], ts->buf, ts->len)) |
7934e668 | 746 | return -1; |
8e86c98a | 747 | |
f0597a7e | 748 | free(ts->buf); |
8e86c98a | 749 | free(ts); |
7934e668 | 750 | return 1; |
8e86c98a JA |
751 | } |
752 | ||
f6fead25 JA |
753 | static int net_sendfile(struct thread_information *tip, struct tip_subbuf *ts) |
754 | { | |
ff11d54c | 755 | int ret = sendfile(net_out_fd[tip->cpu], tip->fd, NULL, ts->len); |
11629347 JA |
756 | |
757 | if (ret < 0) { | |
758 | perror("sendfile"); | |
759 | return 1; | |
760 | } else if (ret < (int) ts->len) { | |
761 | fprintf(stderr, "short sendfile send (%d of %d)\n", ret, ts->len); | |
762 | return 1; | |
763 | } | |
764 | ||
765 | return 0; | |
766 | } | |
767 | ||
32f18c48 JA |
768 | static int flush_subbuf_sendfile(struct thread_information *tip, |
769 | struct tip_subbuf *ts) | |
770 | { | |
7934e668 | 771 | int ret = -1; |
18eed2a7 | 772 | |
f6fead25 | 773 | if (net_send_header(tip, ts->len)) |
11629347 | 774 | goto err; |
f6fead25 | 775 | if (net_sendfile(tip, ts)) |
11629347 | 776 | goto err; |
32f18c48 | 777 | |
f6fead25 | 778 | tip->data_read += ts->len; |
e076d33b | 779 | tip->ofile_offset += buf_size; |
7934e668 | 780 | ret = 1; |
11629347 | 781 | err: |
32f18c48 | 782 | free(ts); |
11629347 | 783 | return ret; |
32f18c48 JA |
784 | } |
785 | ||
ff11d54c | 786 | static int get_subbuf_sendfile(struct thread_information *tip, |
d042efdf | 787 | __attribute__((__unused__)) unsigned int maxlen) |
ff11d54c TZ |
788 | { |
789 | struct tip_subbuf *ts; | |
790 | struct stat sb; | |
791 | unsigned int ready; | |
ff11d54c | 792 | |
2689be58 | 793 | wait_for_data(tip, -1); |
ff11d54c TZ |
794 | |
795 | if (fstat(tip->fd, &sb) < 0) { | |
796 | perror("trace stat"); | |
797 | return -1; | |
798 | } | |
4aeec019 | 799 | |
ff11d54c TZ |
800 | ready = sb.st_size - tip->data_queued; |
801 | if (!ready) { | |
802 | usleep(1000); | |
803 | return 0; | |
804 | } | |
805 | ||
806 | ts = malloc(sizeof(*ts)); | |
807 | ts->buf = NULL; | |
808 | ts->max_len = 0; | |
809 | ts->len = ready; | |
810 | tip->data_queued += ready; | |
811 | ||
d042efdf JA |
812 | if (flush_subbuf_sendfile(tip, ts) < 0) |
813 | return -1; | |
ff11d54c TZ |
814 | |
815 | return ready; | |
816 | } | |
817 | ||
8e86c98a JA |
818 | static int write_data(struct thread_information *tip, void *buf, |
819 | unsigned int buf_len) | |
8a43bac5 | 820 | { |
7126171a | 821 | int ret; |
8a43bac5 | 822 | |
6480258a JA |
823 | if (!buf_len) |
824 | return 0; | |
825 | ||
7126171a JA |
826 | while (1) { |
827 | ret = fwrite(buf, buf_len, 1, tip->ofile); | |
007c233c | 828 | if (ret == 1) |
8a43bac5 JA |
829 | break; |
830 | ||
db6fe5bc JA |
831 | if (ret < 0) { |
832 | perror("write"); | |
833 | return 1; | |
8a43bac5 | 834 | } |
d0ca268b JA |
835 | } |
836 | ||
9db17354 | 837 | if (tip->ofile_stdout) |
7126171a JA |
838 | fflush(tip->ofile); |
839 | ||
8a43bac5 JA |
840 | return 0; |
841 | } | |
842 | ||
8e86c98a JA |
843 | static int flush_subbuf_file(struct thread_information *tip, |
844 | struct tip_subbuf *ts) | |
8a43bac5 | 845 | { |
9db17354 JA |
846 | unsigned int offset = 0; |
847 | struct blk_io_trace *t; | |
848 | int pdu_len, events = 0; | |
8a43bac5 | 849 | |
9db17354 | 850 | /* |
7de86b12 | 851 | * surplus from last run |
9db17354 | 852 | */ |
7de86b12 AB |
853 | if (tip->leftover_ts) { |
854 | struct tip_subbuf *prev_ts = tip->leftover_ts; | |
855 | ||
9e8b753c | 856 | if (prev_ts->len + ts->len > prev_ts->max_len) { |
7de86b12 AB |
857 | prev_ts->max_len += ts->len; |
858 | prev_ts->buf = realloc(prev_ts->buf, prev_ts->max_len); | |
859 | } | |
860 | ||
9e8b753c | 861 | memcpy(prev_ts->buf + prev_ts->len, ts->buf, ts->len); |
7de86b12 AB |
862 | prev_ts->len += ts->len; |
863 | ||
864 | free(ts->buf); | |
865 | free(ts); | |
866 | ||
867 | ts = prev_ts; | |
868 | tip->leftover_ts = NULL; | |
9db17354 | 869 | } |
d0ca268b | 870 | |
9db17354 JA |
871 | while (offset + sizeof(*t) <= ts->len) { |
872 | t = ts->buf + offset; | |
3a9d6c13 | 873 | |
9cfa6c2b AB |
874 | if (verify_trace(t)) { |
875 | write_data(tip, ts->buf, offset); | |
9db17354 | 876 | return -1; |
9cfa6c2b | 877 | } |
3a9d6c13 | 878 | |
9db17354 | 879 | pdu_len = t->pdu_len; |
3a9d6c13 | 880 | |
9db17354 | 881 | if (offset + sizeof(*t) + pdu_len > ts->len) |
3a9d6c13 | 882 | break; |
4b5db44a | 883 | |
9db17354 JA |
884 | offset += sizeof(*t) + pdu_len; |
885 | tip->events_processed++; | |
b7106311 | 886 | tip->data_read += sizeof(*t) + pdu_len; |
9db17354 | 887 | events++; |
3a9d6c13 JA |
888 | } |
889 | ||
9cfa6c2b AB |
890 | if (write_data(tip, ts->buf, offset)) |
891 | return -1; | |
892 | ||
3a9d6c13 | 893 | /* |
9db17354 | 894 | * leftover bytes, save them for next time |
3a9d6c13 | 895 | */ |
9db17354 | 896 | if (offset != ts->len) { |
7de86b12 | 897 | tip->leftover_ts = ts; |
9e8b753c JA |
898 | ts->len -= offset; |
899 | memmove(ts->buf, ts->buf + offset, ts->len); | |
7de86b12 AB |
900 | } else { |
901 | free(ts->buf); | |
902 | free(ts); | |
9db17354 | 903 | } |
4b5db44a | 904 | |
9db17354 | 905 | return events; |
4b5db44a JA |
906 | } |
907 | ||
9db17354 | 908 | static int write_tip_events(struct thread_information *tip) |
d5396421 | 909 | { |
21f55651 | 910 | struct tip_subbuf *ts = subbuf_fifo_dequeue(tip); |
d5396421 | 911 | |
0cc7d25e JA |
912 | if (ts) |
913 | return tip->flush_subbuf(tip, ts); | |
91816d54 | 914 | |
9db17354 | 915 | return 0; |
91816d54 JA |
916 | } |
917 | ||
9db17354 JA |
918 | /* |
919 | * scans the tips we know and writes out the subbuffers we accumulate | |
920 | */ | |
921 | static void get_and_write_events(void) | |
d0ca268b | 922 | { |
9db17354 JA |
923 | struct device_information *dip; |
924 | struct thread_information *tip; | |
27223f19 | 925 | int i, j, events, ret, tips_running; |
d0ca268b | 926 | |
9db17354 JA |
927 | while (!is_done()) { |
928 | events = 0; | |
d0ca268b | 929 | |
9db17354 JA |
930 | for_each_dip(dip, i) { |
931 | for_each_tip(dip, tip, j) { | |
932 | ret = write_tip_events(tip); | |
933 | if (ret > 0) | |
934 | events += ret; | |
935 | } | |
936 | } | |
d0ca268b | 937 | |
9db17354 | 938 | if (!events) |
7934e668 | 939 | usleep(100000); |
d0ca268b JA |
940 | } |
941 | ||
a3e4d330 | 942 | /* |
9db17354 | 943 | * reap stored events |
a3e4d330 | 944 | */ |
9db17354 JA |
945 | do { |
946 | events = 0; | |
27223f19 | 947 | tips_running = 0; |
9db17354 JA |
948 | for_each_dip(dip, i) { |
949 | for_each_tip(dip, tip, j) { | |
950 | ret = write_tip_events(tip); | |
951 | if (ret > 0) | |
952 | events += ret; | |
27223f19 | 953 | tips_running += !tip->exited; |
9db17354 | 954 | } |
69e65a9e | 955 | } |
9db17354 | 956 | usleep(10); |
27223f19 | 957 | } while (events || tips_running); |
d0ca268b JA |
958 | } |
959 | ||
b7106311 JA |
960 | static void wait_for_threads(void) |
961 | { | |
962 | /* | |
8e86c98a JA |
963 | * for piped or network output, poll and fetch data for writeout. |
964 | * for files, we just wait around for trace threads to exit | |
b7106311 | 965 | */ |
8e86c98a | 966 | if ((output_name && !strcmp(output_name, "-")) || |
ff11d54c | 967 | ((net_mode == Net_client) && !net_use_sendfile)) |
b7106311 JA |
968 | get_and_write_events(); |
969 | else { | |
970 | struct device_information *dip; | |
971 | struct thread_information *tip; | |
972 | int i, j, tips_running; | |
973 | ||
974 | do { | |
975 | tips_running = 0; | |
7934e668 | 976 | usleep(100000); |
b7106311 JA |
977 | |
978 | for_each_dip(dip, i) | |
979 | for_each_tip(dip, tip, j) | |
980 | tips_running += !tip->exited; | |
981 | } while (tips_running); | |
982 | } | |
6a752c90 JA |
983 | |
984 | if (net_mode == Net_client) | |
985 | net_client_send_close(); | |
b7106311 JA |
986 | } |
987 | ||
97159c02 JA |
988 | static int fill_ofname(struct device_information *dip, |
989 | struct thread_information *tip, char *dst, | |
e3bf54d8 | 990 | char *buts_name) |
8e86c98a | 991 | { |
e3bf54d8 | 992 | struct stat sb; |
8e86c98a JA |
993 | int len = 0; |
994 | ||
995 | if (output_dir) | |
996 | len = sprintf(dst, "%s/", output_dir); | |
dd870ef6 AB |
997 | else |
998 | len = sprintf(dst, "./"); | |
8e86c98a | 999 | |
e3bf54d8 | 1000 | if (net_mode == Net_server) { |
ff11d54c | 1001 | struct net_connection *nc = tip->nc; |
e0a1988b | 1002 | |
ff11d54c TZ |
1003 | len += sprintf(dst + len, "%s-", inet_ntoa(nc->ch->cl_in_addr)); |
1004 | len += strftime(dst + len, 64, "%F-%T/", gmtime(&dip->cl_connect_time)); | |
e3bf54d8 JA |
1005 | } |
1006 | ||
1007 | if (stat(dst, &sb) < 0) { | |
1008 | if (errno != ENOENT) { | |
1009 | perror("stat"); | |
1010 | return 1; | |
1011 | } | |
1012 | if (mkdir(dst, 0755) < 0) { | |
1013 | perror(dst); | |
1014 | fprintf(stderr, "Can't make output dir\n"); | |
1015 | return 1; | |
1016 | } | |
1017 | } | |
1018 | ||
8e86c98a | 1019 | if (output_name) |
e3bf54d8 | 1020 | sprintf(dst + len, "%s.blktrace.%d", output_name, tip->cpu); |
8e86c98a | 1021 | else |
e3bf54d8 JA |
1022 | sprintf(dst + len, "%s.blktrace.%d", buts_name, tip->cpu); |
1023 | ||
1024 | return 0; | |
8e86c98a JA |
1025 | } |
1026 | ||
0cc7d25e JA |
1027 | static void fill_ops(struct thread_information *tip) |
1028 | { | |
1029 | /* | |
1030 | * setup ops | |
1031 | */ | |
32f18c48 | 1032 | if (net_mode == Net_client) { |
36808255 | 1033 | if (net_use_sendfile) { |
32f18c48 | 1034 | tip->get_subbuf = get_subbuf_sendfile; |
ff11d54c | 1035 | tip->flush_subbuf = NULL; |
32f18c48 JA |
1036 | } else { |
1037 | tip->get_subbuf = get_subbuf; | |
1038 | tip->flush_subbuf = flush_subbuf_net; | |
1039 | } | |
1040 | } else { | |
1041 | if (tip->ofile_mmap) | |
1042 | tip->get_subbuf = mmap_subbuf; | |
1043 | else | |
1044 | tip->get_subbuf = get_subbuf; | |
0cc7d25e | 1045 | |
0cc7d25e | 1046 | tip->flush_subbuf = flush_subbuf_file; |
32f18c48 JA |
1047 | } |
1048 | ||
0cc7d25e JA |
1049 | if (net_mode == Net_server) |
1050 | tip->read_data = read_data_net; | |
1051 | else | |
1052 | tip->read_data = read_data_file; | |
1053 | } | |
1054 | ||
ddf22842 JA |
1055 | static int tip_open_output(struct device_information *dip, |
1056 | struct thread_information *tip) | |
d0ca268b | 1057 | { |
ddf22842 | 1058 | int pipeline = output_name && !strcmp(output_name, "-"); |
8e86c98a | 1059 | int mode, vbuf_size; |
e3bf54d8 | 1060 | char op[128]; |
d0ca268b | 1061 | |
ddf22842 JA |
1062 | if (net_mode == Net_client) { |
1063 | tip->ofile = NULL; | |
1064 | tip->ofile_stdout = 0; | |
1065 | tip->ofile_mmap = 0; | |
0c0b75b4 | 1066 | goto done; |
ddf22842 JA |
1067 | } else if (pipeline) { |
1068 | tip->ofile = fdopen(STDOUT_FILENO, "w"); | |
1069 | tip->ofile_stdout = 1; | |
1070 | tip->ofile_mmap = 0; | |
1071 | mode = _IOLBF; | |
1072 | vbuf_size = 512; | |
1073 | } else { | |
97159c02 | 1074 | if (fill_ofname(dip, tip, op, dip->buts_name)) |
e3bf54d8 | 1075 | return 1; |
ddf22842 JA |
1076 | tip->ofile = fopen(op, "w+"); |
1077 | tip->ofile_stdout = 0; | |
1078 | tip->ofile_mmap = 1; | |
1079 | mode = _IOFBF; | |
1080 | vbuf_size = OFILE_BUF; | |
1081 | } | |
d5396421 | 1082 | |
0c0b75b4 | 1083 | if (tip->ofile == NULL) { |
ddf22842 JA |
1084 | perror(op); |
1085 | return 1; | |
1086 | } | |
d5396421 | 1087 | |
0c0b75b4 JA |
1088 | tip->ofile_buffer = malloc(vbuf_size); |
1089 | if (setvbuf(tip->ofile, tip->ofile_buffer, mode, vbuf_size)) { | |
1090 | perror("setvbuf"); | |
1091 | close_thread(tip); | |
1092 | return 1; | |
ddf22842 JA |
1093 | } |
1094 | ||
0c0b75b4 | 1095 | done: |
ddf22842 JA |
1096 | fill_ops(tip); |
1097 | return 0; | |
1098 | } | |
007c233c | 1099 | |
ddf22842 JA |
1100 | static int start_threads(struct device_information *dip) |
1101 | { | |
1102 | struct thread_information *tip; | |
1103 | int j; | |
1104 | ||
1105 | for_each_tip(dip, tip, j) { | |
1106 | tip->cpu = j; | |
1107 | tip->device = dip; | |
1108 | tip->events_processed = 0; | |
11eedd9b | 1109 | tip->fd = -1; |
ddf22842 JA |
1110 | memset(&tip->fifo, 0, sizeof(tip->fifo)); |
1111 | tip->leftover_ts = NULL; | |
1112 | ||
1113 | if (tip_open_output(dip, tip)) | |
1114 | return 1; | |
0cc7d25e | 1115 | |
9db17354 | 1116 | if (pthread_create(&tip->thread, NULL, thread_main, tip)) { |
e7c9f3ff | 1117 | perror("pthread_create"); |
007c233c | 1118 | close_thread(tip); |
e7c9f3ff | 1119 | return 1; |
d0ca268b JA |
1120 | } |
1121 | } | |
1122 | ||
e7c9f3ff | 1123 | return 0; |
d0ca268b JA |
1124 | } |
1125 | ||
e7c9f3ff | 1126 | static void stop_threads(struct device_information *dip) |
3aabcd89 | 1127 | { |
e7c9f3ff | 1128 | struct thread_information *tip; |
91816d54 | 1129 | unsigned long ret; |
007c233c JA |
1130 | int i; |
1131 | ||
9db17354 | 1132 | for_each_tip(dip, tip, i) { |
91816d54 | 1133 | (void) pthread_join(tip->thread, (void *) &ret); |
9db17354 JA |
1134 | close_thread(tip); |
1135 | } | |
3aabcd89 JA |
1136 | } |
1137 | ||
e7c9f3ff | 1138 | static void stop_all_threads(void) |
72ca8801 | 1139 | { |
e7c9f3ff | 1140 | struct device_information *dip; |
72ca8801 NS |
1141 | int i; |
1142 | ||
99c1f5ab | 1143 | for_each_dip(dip, i) |
e7c9f3ff NS |
1144 | stop_threads(dip); |
1145 | } | |
1146 | ||
1147 | static void stop_all_tracing(void) | |
1148 | { | |
1149 | struct device_information *dip; | |
91816d54 | 1150 | int i; |
007c233c | 1151 | |
91816d54 | 1152 | for_each_dip(dip, i) |
e7c9f3ff | 1153 | stop_trace(dip); |
72ca8801 NS |
1154 | } |
1155 | ||
1156 | static void exit_trace(int status) | |
1157 | { | |
eb3c8108 JA |
1158 | if (!is_trace_stopped()) { |
1159 | trace_stopped = 1; | |
1160 | stop_all_threads(); | |
1161 | stop_all_tracing(); | |
1162 | } | |
1163 | ||
72ca8801 NS |
1164 | exit(status); |
1165 | } | |
1166 | ||
e7c9f3ff NS |
1167 | static int resize_devices(char *path) |
1168 | { | |
1169 | int size = (ndevs + 1) * sizeof(struct device_information); | |
1170 | ||
1171 | device_information = realloc(device_information, size); | |
1172 | if (!device_information) { | |
1173 | fprintf(stderr, "Out of memory, device %s (%d)\n", path, size); | |
1174 | return 1; | |
1175 | } | |
1176 | device_information[ndevs].path = path; | |
1177 | ndevs++; | |
1178 | return 0; | |
1179 | } | |
1180 | ||
1181 | static int open_devices(void) | |
d0ca268b | 1182 | { |
e7c9f3ff | 1183 | struct device_information *dip; |
d0ca268b | 1184 | int i; |
d0ca268b | 1185 | |
99c1f5ab | 1186 | for_each_dip(dip, i) { |
cf9208ea | 1187 | dip->fd = open(dip->path, O_RDONLY | O_NONBLOCK); |
e7c9f3ff NS |
1188 | if (dip->fd < 0) { |
1189 | perror(dip->path); | |
1190 | return 1; | |
1191 | } | |
1192 | } | |
99c1f5ab | 1193 | |
e7c9f3ff NS |
1194 | return 0; |
1195 | } | |
1196 | ||
1197 | static int start_devices(void) | |
1198 | { | |
1199 | struct device_information *dip; | |
1200 | int i, j, size; | |
1201 | ||
1202 | size = ncpus * sizeof(struct thread_information); | |
1203 | thread_information = malloc(size * ndevs); | |
1204 | if (!thread_information) { | |
1205 | fprintf(stderr, "Out of memory, threads (%d)\n", size * ndevs); | |
1206 | return 1; | |
1207 | } | |
d5396421 | 1208 | |
99c1f5ab | 1209 | for_each_dip(dip, i) { |
e7c9f3ff NS |
1210 | if (start_trace(dip)) { |
1211 | close(dip->fd); | |
1212 | fprintf(stderr, "Failed to start trace on %s\n", | |
1213 | dip->path); | |
1214 | break; | |
1215 | } | |
1216 | } | |
99c1f5ab | 1217 | |
e7c9f3ff | 1218 | if (i != ndevs) { |
ce020676 | 1219 | __for_each_dip(dip, device_information, i, j) |
e7c9f3ff | 1220 | stop_trace(dip); |
99c1f5ab | 1221 | |
e7c9f3ff NS |
1222 | return 1; |
1223 | } | |
1224 | ||
99c1f5ab | 1225 | for_each_dip(dip, i) { |
e7c9f3ff NS |
1226 | dip->threads = thread_information + (i * ncpus); |
1227 | if (start_threads(dip)) { | |
1228 | fprintf(stderr, "Failed to start worker threads\n"); | |
1229 | break; | |
1230 | } | |
1231 | } | |
99c1f5ab | 1232 | |
e7c9f3ff | 1233 | if (i != ndevs) { |
ce020676 | 1234 | __for_each_dip(dip, device_information, i, j) |
e7c9f3ff | 1235 | stop_threads(dip); |
99c1f5ab | 1236 | for_each_dip(dip, i) |
e7c9f3ff | 1237 | stop_trace(dip); |
99c1f5ab | 1238 | |
e7c9f3ff | 1239 | return 1; |
d0ca268b JA |
1240 | } |
1241 | ||
e7c9f3ff | 1242 | return 0; |
d0ca268b JA |
1243 | } |
1244 | ||
e0a1988b | 1245 | static void show_stats(struct device_information *dips, int ndips, int cpus) |
e7c9f3ff | 1246 | { |
e7c9f3ff NS |
1247 | struct device_information *dip; |
1248 | struct thread_information *tip; | |
b7106311 | 1249 | unsigned long long events_processed, data_read; |
eb3c8108 | 1250 | unsigned long total_drops; |
2f903295 | 1251 | int i, j, no_stdout = 0; |
eb3c8108 JA |
1252 | |
1253 | if (is_stat_shown()) | |
1254 | return; | |
1255 | ||
2f903295 JA |
1256 | if (output_name && !strcmp(output_name, "-")) |
1257 | no_stdout = 1; | |
1258 | ||
eb3c8108 | 1259 | stat_shown = 1; |
428683db | 1260 | |
56070ea4 | 1261 | total_drops = 0; |
ce020676 | 1262 | __for_each_dip(dip, dips, ndips, i) { |
2f903295 | 1263 | if (!no_stdout) |
56070ea4 | 1264 | printf("Device: %s\n", dip->path); |
e7c9f3ff | 1265 | events_processed = 0; |
b7106311 | 1266 | data_read = 0; |
ce020676 | 1267 | __for_each_tip(dip, tip, cpus, j) { |
2f903295 | 1268 | if (!no_stdout) |
b7106311 JA |
1269 | printf(" CPU%3d: %20lu events, %8llu KiB data\n", |
1270 | tip->cpu, tip->events_processed, | |
54824c20 | 1271 | (tip->data_read + 1023) >> 10); |
e7c9f3ff | 1272 | events_processed += tip->events_processed; |
b7106311 | 1273 | data_read += tip->data_read; |
e7c9f3ff | 1274 | } |
eb3c8108 | 1275 | total_drops += dip->drop_count; |
2f903295 | 1276 | if (!no_stdout) |
b7106311 JA |
1277 | printf(" Total: %20llu events (dropped %lu), %8llu KiB data\n", |
1278 | events_processed, dip->drop_count, | |
18d8437d | 1279 | (data_read + 1023) >> 10); |
e7c9f3ff | 1280 | } |
56070ea4 JA |
1281 | |
1282 | if (total_drops) | |
1283 | fprintf(stderr, "You have dropped events, consider using a larger buffer size (-b)\n"); | |
e7c9f3ff | 1284 | } |
52724a0e | 1285 | |
e0a1988b | 1286 | static struct device_information *net_get_dip(struct net_connection *nc, |
ff11d54c | 1287 | char *buts_name, u32 cl_id) |
8e86c98a | 1288 | { |
ff11d54c TZ |
1289 | struct device_information *dip, *cl_dip = NULL; |
1290 | struct cl_host *ch = nc->ch; | |
8e86c98a JA |
1291 | int i; |
1292 | ||
ff11d54c TZ |
1293 | for (i = 0; i < ch->ndevs; i++) { |
1294 | dip = &ch->device_information[i]; | |
8e86c98a | 1295 | |
22cd0c02 JA |
1296 | if (!strcmp(dip->buts_name, buts_name)) |
1297 | return dip; | |
ff11d54c TZ |
1298 | |
1299 | if (dip->cl_id == cl_id) | |
1300 | cl_dip = dip; | |
8e86c98a JA |
1301 | } |
1302 | ||
ff11d54c TZ |
1303 | ch->device_information = realloc(ch->device_information, (ch->ndevs + 1) * sizeof(*dip)); |
1304 | dip = &ch->device_information[ch->ndevs]; | |
921b05fe JA |
1305 | memset(dip, 0, sizeof(*dip)); |
1306 | dip->fd = -1; | |
ff11d54c TZ |
1307 | dip->ch = ch; |
1308 | dip->cl_id = cl_id; | |
1309 | if (cl_dip) | |
1310 | dip->cl_connect_time = cl_dip->cl_connect_time; | |
1311 | else | |
1312 | dip->cl_connect_time = nc->connect_time; | |
22cd0c02 | 1313 | strcpy(dip->buts_name, buts_name); |
921b05fe | 1314 | dip->path = strdup(buts_name); |
7ab2f837 | 1315 | dip->trace_started = 1; |
ff11d54c | 1316 | ch->ndevs++; |
e0a1988b JA |
1317 | dip->threads = malloc(nc->ncpus * sizeof(struct thread_information)); |
1318 | memset(dip->threads, 0, nc->ncpus * sizeof(struct thread_information)); | |
22cd0c02 JA |
1319 | |
1320 | /* | |
1321 | * open all files | |
1322 | */ | |
e0a1988b | 1323 | for (i = 0; i < nc->ncpus; i++) { |
22cd0c02 | 1324 | struct thread_information *tip = &dip->threads[i]; |
8e86c98a | 1325 | |
22cd0c02 | 1326 | tip->cpu = i; |
22cd0c02 | 1327 | tip->device = dip; |
1366e53a | 1328 | tip->fd = -1; |
ff11d54c TZ |
1329 | tip->nc = nc; |
1330 | ||
ddf22842 | 1331 | if (tip_open_output(dip, tip)) |
22cd0c02 | 1332 | return NULL; |
ff11d54c TZ |
1333 | |
1334 | tip->nc = NULL; | |
8e86c98a JA |
1335 | } |
1336 | ||
22cd0c02 JA |
1337 | return dip; |
1338 | } | |
1339 | ||
e0a1988b JA |
1340 | static struct thread_information *net_get_tip(struct net_connection *nc, |
1341 | struct blktrace_net_hdr *bnh) | |
22cd0c02 JA |
1342 | { |
1343 | struct device_information *dip; | |
ff11d54c | 1344 | struct thread_information *tip; |
22cd0c02 | 1345 | |
ff11d54c | 1346 | dip = net_get_dip(nc, bnh->buts_name, bnh->cl_id); |
7ab2f837 JA |
1347 | if (!dip->trace_started) { |
1348 | fprintf(stderr, "Events for closed devices %s\n", dip->buts_name); | |
1349 | return NULL; | |
1350 | } | |
1351 | ||
ff11d54c TZ |
1352 | tip = &dip->threads[bnh->cpu]; |
1353 | if (!tip->nc) | |
1354 | tip->nc = nc; | |
1355 | ||
1356 | return tip; | |
8e86c98a JA |
1357 | } |
1358 | ||
e0a1988b JA |
1359 | static int net_get_header(struct net_connection *nc, |
1360 | struct blktrace_net_hdr *bnh) | |
8e86c98a | 1361 | { |
e0a1988b | 1362 | int fl = fcntl(nc->in_fd, F_GETFL); |
8e86c98a JA |
1363 | int bytes_left, ret; |
1364 | void *p = bnh; | |
1365 | ||
e0a1988b | 1366 | fcntl(nc->in_fd, F_SETFL, fl | O_NONBLOCK); |
8e86c98a JA |
1367 | bytes_left = sizeof(*bnh); |
1368 | while (bytes_left && !is_done()) { | |
e0a1988b | 1369 | ret = recv(nc->in_fd, p, bytes_left, MSG_WAITALL); |
8e86c98a JA |
1370 | if (ret < 0) { |
1371 | if (errno != EAGAIN) { | |
1372 | perror("recv header"); | |
1373 | return 1; | |
1374 | } | |
7934e668 | 1375 | usleep(1000); |
8e86c98a JA |
1376 | continue; |
1377 | } else if (!ret) { | |
7934e668 | 1378 | usleep(1000); |
8e86c98a JA |
1379 | continue; |
1380 | } else { | |
1381 | p += ret; | |
1382 | bytes_left -= ret; | |
1383 | } | |
1384 | } | |
e0a1988b | 1385 | fcntl(nc->in_fd, F_SETFL, fl & ~O_NONBLOCK); |
227f89ff | 1386 | return bytes_left; |
8e86c98a JA |
1387 | } |
1388 | ||
e0a1988b JA |
1389 | /* |
1390 | * finalize a net client: truncate files, show stats, cleanup, etc | |
1391 | */ | |
ff11d54c | 1392 | static void device_done(struct net_connection *nc, struct device_information *dip) |
e0a1988b | 1393 | { |
e0a1988b | 1394 | struct thread_information *tip; |
ff11d54c | 1395 | int i; |
e0a1988b | 1396 | |
ff11d54c TZ |
1397 | __for_each_tip(dip, tip, nc->ncpus, i) |
1398 | tip_ftrunc_final(tip); | |
e0a1988b | 1399 | |
ff11d54c | 1400 | show_stats(dip, 1, nc->ncpus); |
e0a1988b JA |
1401 | |
1402 | /* | |
1403 | * cleanup for next run | |
1404 | */ | |
ff11d54c TZ |
1405 | __for_each_tip(dip, tip, nc->ncpus, i) { |
1406 | if (tip->ofile) | |
1407 | fclose(tip->ofile); | |
e0a1988b JA |
1408 | } |
1409 | ||
ff11d54c TZ |
1410 | free(dip->threads); |
1411 | free(dip->path); | |
e0a1988b JA |
1412 | |
1413 | close(nc->in_fd); | |
1414 | nc->in_fd = -1; | |
1415 | ||
ff11d54c TZ |
1416 | stat_shown = 0; |
1417 | } | |
e0a1988b | 1418 | |
ff11d54c TZ |
1419 | static inline int in_addr_eq(struct in_addr a, struct in_addr b) |
1420 | { | |
1421 | return a.s_addr == b.s_addr; | |
1422 | } | |
1423 | ||
1424 | static void net_add_client_host(struct cl_host *ch) | |
1425 | { | |
1426 | ch->list_next = cl_host_list; | |
1427 | cl_host_list = ch; | |
1428 | cl_hosts++; | |
1429 | } | |
1430 | ||
1431 | static void net_remove_client_host(struct cl_host *ch) | |
1432 | { | |
1433 | struct cl_host *p, *c; | |
1434 | ||
1435 | for (p = c = cl_host_list; c; c = c->list_next) { | |
1436 | if (c == ch) { | |
1437 | if (p == c) | |
1438 | cl_host_list = c->list_next; | |
1439 | else | |
1440 | p->list_next = c->list_next; | |
1441 | cl_hosts--; | |
1442 | return; | |
1443 | } | |
1444 | p = c; | |
e0a1988b | 1445 | } |
ff11d54c | 1446 | } |
e0a1988b | 1447 | |
ff11d54c TZ |
1448 | static struct cl_host *net_find_client_host(struct in_addr cl_in_addr) |
1449 | { | |
1450 | struct cl_host *ch = cl_host_list; | |
1451 | ||
1452 | while (ch) { | |
1453 | if (in_addr_eq(ch->cl_in_addr, cl_in_addr)) | |
1454 | return ch; | |
1455 | ch = ch->list_next; | |
1456 | } | |
1457 | ||
1458 | return NULL; | |
1459 | } | |
1460 | ||
ff11d54c TZ |
1461 | static void net_client_host_done(struct cl_host *ch) |
1462 | { | |
1463 | free(ch->device_information); | |
1464 | free(ch->net_connections); | |
1465 | net_connects -= ch->nconn; | |
1466 | net_remove_client_host(ch); | |
1467 | free(ch); | |
e0a1988b JA |
1468 | } |
1469 | ||
1470 | /* | |
1471 | * handle incoming events from a net client | |
1472 | */ | |
1473 | static int net_client_data(struct net_connection *nc) | |
8e86c98a JA |
1474 | { |
1475 | struct thread_information *tip; | |
1476 | struct blktrace_net_hdr bnh; | |
1477 | ||
e0a1988b | 1478 | if (net_get_header(nc, &bnh)) |
8e86c98a JA |
1479 | return 1; |
1480 | ||
1481 | if (data_is_native == -1 && check_data_endianness(bnh.magic)) { | |
1482 | fprintf(stderr, "server: received data is bad\n"); | |
1483 | return 1; | |
1484 | } | |
1485 | ||
1486 | if (!data_is_native) { | |
227f89ff | 1487 | bnh.magic = be32_to_cpu(bnh.magic); |
8e86c98a | 1488 | bnh.cpu = be32_to_cpu(bnh.cpu); |
4aeec019 | 1489 | bnh.max_cpus = be32_to_cpu(bnh.max_cpus); |
8e86c98a | 1490 | bnh.len = be32_to_cpu(bnh.len); |
ff11d54c | 1491 | bnh.cl_id = be32_to_cpu(bnh.cl_id); |
8e86c98a JA |
1492 | } |
1493 | ||
227f89ff JA |
1494 | if ((bnh.magic & 0xffffff00) != BLK_IO_TRACE_MAGIC) { |
1495 | fprintf(stderr, "server: bad data magic\n"); | |
1496 | return 1; | |
1497 | } | |
1498 | ||
4aeec019 JA |
1499 | if (nc->ncpus == -1) |
1500 | nc->ncpus = bnh.max_cpus; | |
1501 | ||
6a752c90 JA |
1502 | /* |
1503 | * len == 0 means that the other end signalled end-of-run | |
1504 | */ | |
1505 | if (!bnh.len) { | |
7934e668 JA |
1506 | /* |
1507 | * overload cpu count with dropped events | |
1508 | */ | |
1509 | struct device_information *dip; | |
1510 | ||
ff11d54c | 1511 | dip = net_get_dip(nc, bnh.buts_name, bnh.cl_id); |
7934e668 | 1512 | dip->drop_count = bnh.cpu; |
7ab2f837 | 1513 | dip->trace_started = 0; |
7934e668 | 1514 | |
e0a1988b | 1515 | printf("server: end of run for %s\n", dip->buts_name); |
4aeec019 | 1516 | |
ff11d54c TZ |
1517 | device_done(nc, dip); |
1518 | ||
1519 | if (++nc->ch->ndevs_done == nc->ch->ndevs) | |
1520 | net_client_host_done(nc->ch); | |
4aeec019 | 1521 | |
e0a1988b | 1522 | return 0; |
6a752c90 JA |
1523 | } |
1524 | ||
e0a1988b | 1525 | tip = net_get_tip(nc, &bnh); |
8e86c98a JA |
1526 | if (!tip) |
1527 | return 1; | |
1528 | ||
1529 | if (mmap_subbuf(tip, bnh.len)) | |
1530 | return 1; | |
1531 | ||
1532 | return 0; | |
1533 | } | |
1534 | ||
e0a1988b | 1535 | static void net_add_connection(int listen_fd, struct sockaddr_in *addr) |
659bcc3f | 1536 | { |
e0a1988b JA |
1537 | socklen_t socklen = sizeof(*addr); |
1538 | struct net_connection *nc; | |
ff11d54c TZ |
1539 | struct cl_host *ch; |
1540 | int in_fd; | |
659bcc3f | 1541 | |
ff11d54c TZ |
1542 | in_fd = accept(listen_fd, (struct sockaddr *) addr, &socklen); |
1543 | if (in_fd < 0) { | |
1544 | perror("accept"); | |
e0a1988b | 1545 | return; |
659bcc3f | 1546 | } |
659bcc3f | 1547 | |
ff11d54c TZ |
1548 | ch = net_find_client_host(addr->sin_addr); |
1549 | if (!ch) { | |
1550 | if (cl_hosts == NET_MAX_CL_HOSTS) { | |
1551 | fprintf(stderr, "server: no more clients allowed\n"); | |
1552 | return; | |
1553 | } | |
1554 | ch = malloc(sizeof(struct cl_host)); | |
1555 | memset(ch, 0, sizeof(*ch)); | |
1556 | ch->cl_in_addr = addr->sin_addr; | |
1557 | net_add_client_host(ch); | |
506cdb6d JA |
1558 | |
1559 | printf("server: connection from %s\n", inet_ntoa(addr->sin_addr)); | |
659bcc3f JA |
1560 | } |
1561 | ||
ff11d54c TZ |
1562 | ch->net_connections = realloc(ch->net_connections, (ch->nconn + 1) * sizeof(*nc)); |
1563 | nc = &ch->net_connections[ch->nconn++]; | |
1564 | memset(nc, 0, sizeof(*nc)); | |
1565 | ||
e0a1988b | 1566 | time(&nc->connect_time); |
ff11d54c TZ |
1567 | nc->ch = ch; |
1568 | nc->in_fd = in_fd; | |
4aeec019 | 1569 | nc->ncpus = -1; |
e0a1988b JA |
1570 | net_connects++; |
1571 | } | |
1572 | ||
1573 | /* | |
1574 | * event driven loop, handle new incoming connections and data from | |
1575 | * existing connections | |
1576 | */ | |
1577 | static void net_server_handle_connections(int listen_fd, | |
1578 | struct sockaddr_in *addr) | |
1579 | { | |
ff11d54c TZ |
1580 | struct pollfd *pfds = NULL; |
1581 | struct net_connection **ncs = NULL; | |
1582 | int max_connects = 0; | |
1583 | int i, nconns, events; | |
1584 | struct cl_host *ch; | |
1585 | struct net_connection *nc; | |
1586 | ||
e0a1988b JA |
1587 | printf("server: waiting for connections...\n"); |
1588 | ||
1589 | while (!is_done()) { | |
ff11d54c TZ |
1590 | if (net_connects >= max_connects) { |
1591 | pfds = realloc(pfds, (net_connects + 1) * sizeof(*pfds)); | |
1592 | ncs = realloc(ncs, (net_connects + 1) * sizeof(*ncs)); | |
1593 | max_connects = net_connects + 1; | |
1594 | } | |
e0a1988b JA |
1595 | /* |
1596 | * the zero entry is for incoming connections, remaining | |
1597 | * entries for clients | |
1598 | */ | |
1599 | pfds[0].fd = listen_fd; | |
1600 | pfds[0].events = POLLIN; | |
ff11d54c TZ |
1601 | nconns = 0; |
1602 | for_each_cl_host(ch) { | |
1603 | for (i = 0; i < ch->nconn; i++) { | |
1604 | nc = &ch->net_connections[i]; | |
1605 | pfds[nconns + 1].fd = nc->in_fd; | |
1606 | pfds[nconns + 1].events = POLLIN; | |
1607 | ncs[nconns++] = nc; | |
1608 | } | |
e0a1988b JA |
1609 | } |
1610 | ||
ff11d54c | 1611 | events = poll(pfds, 1 + nconns, -1); |
e0a1988b JA |
1612 | if (events < 0) { |
1613 | if (errno == EINTR) | |
1614 | continue; | |
1615 | ||
1616 | perror("poll"); | |
1617 | break; | |
1618 | } else if (!events) | |
1619 | continue; | |
1620 | ||
1621 | if (pfds[0].revents & POLLIN) { | |
1622 | net_add_connection(listen_fd, addr); | |
1623 | events--; | |
1624 | } | |
1625 | ||
ff11d54c | 1626 | for (i = 0; events && i < nconns; i++) { |
e0a1988b | 1627 | if (pfds[i + 1].revents & POLLIN) { |
ff11d54c | 1628 | net_client_data(ncs[i]); |
e0a1988b JA |
1629 | events--; |
1630 | } | |
1631 | } | |
1632 | } | |
659bcc3f JA |
1633 | } |
1634 | ||
8e86c98a JA |
1635 | /* |
1636 | * Start here when we are in server mode - just fetch data from the network | |
1637 | * and dump to files | |
1638 | */ | |
1639 | static int net_server(void) | |
1640 | { | |
1641 | struct sockaddr_in addr; | |
e0a1988b | 1642 | int fd, opt; |
8e86c98a JA |
1643 | |
1644 | fd = socket(AF_INET, SOCK_STREAM, 0); | |
1645 | if (fd < 0) { | |
1646 | perror("server: socket"); | |
1647 | return 1; | |
1648 | } | |
1649 | ||
1650 | opt = 1; | |
1651 | if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt)) < 0) { | |
1652 | perror("setsockopt"); | |
1653 | return 1; | |
1654 | } | |
1655 | ||
1656 | memset(&addr, 0, sizeof(addr)); | |
1657 | addr.sin_family = AF_INET; | |
1658 | addr.sin_addr.s_addr = htonl(INADDR_ANY); | |
1659 | addr.sin_port = htons(net_port); | |
1660 | ||
1661 | if (bind(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) { | |
1662 | perror("bind"); | |
1663 | return 1; | |
1664 | } | |
1665 | ||
1666 | if (listen(fd, 1) < 0) { | |
1667 | perror("listen"); | |
1668 | return 1; | |
1669 | } | |
1670 | ||
e0a1988b JA |
1671 | net_server_handle_connections(fd, &addr); |
1672 | return 0; | |
8e86c98a JA |
1673 | } |
1674 | ||
1675 | /* | |
1676 | * Setup outgoing network connection where we will transmit data | |
1677 | */ | |
ff11d54c | 1678 | static int net_setup_client_cpu(int i, struct sockaddr_in *addr) |
8e86c98a | 1679 | { |
8e86c98a JA |
1680 | int fd; |
1681 | ||
1682 | fd = socket(AF_INET, SOCK_STREAM, 0); | |
1683 | if (fd < 0) { | |
1684 | perror("client: socket"); | |
1685 | return 1; | |
1686 | } | |
1687 | ||
ff11d54c TZ |
1688 | if (connect(fd, (struct sockaddr *) addr, sizeof(*addr)) < 0) { |
1689 | perror("client: connect"); | |
1690 | return 1; | |
1691 | } | |
1692 | ||
1693 | net_out_fd[i] = fd; | |
1694 | return 0; | |
1695 | } | |
1696 | ||
1697 | static int net_setup_client(void) | |
1698 | { | |
1699 | struct sockaddr_in addr; | |
1700 | int i; | |
1701 | ||
8e86c98a JA |
1702 | memset(&addr, 0, sizeof(addr)); |
1703 | addr.sin_family = AF_INET; | |
1704 | addr.sin_port = htons(net_port); | |
1705 | ||
1706 | if (inet_aton(hostname, &addr.sin_addr) != 1) { | |
1707 | struct hostent *hent = gethostbyname(hostname); | |
1708 | if (!hent) { | |
1709 | perror("gethostbyname"); | |
1710 | return 1; | |
1711 | } | |
1712 | ||
1713 | memcpy(&addr.sin_addr, hent->h_addr, 4); | |
1714 | strcpy(hostname, hent->h_name); | |
1715 | } | |
1716 | ||
1717 | printf("blktrace: connecting to %s\n", hostname); | |
1718 | ||
ff11d54c TZ |
1719 | net_out_fd = malloc(ncpus * sizeof(*net_out_fd)); |
1720 | for (i = 0; i < ncpus; i++) { | |
1721 | if (net_setup_client_cpu(i, &addr)) | |
1722 | return 1; | |
8e86c98a JA |
1723 | } |
1724 | ||
1725 | printf("blktrace: connected!\n"); | |
ff11d54c | 1726 | |
8e86c98a JA |
1727 | return 0; |
1728 | } | |
1729 | ||
52724a0e | 1730 | static char usage_str[] = \ |
3d06efea | 1731 | "-d <dev> [ -r debugfs path ] [ -o <output> ] [-k ] [ -w time ]\n" \ |
52724a0e JA |
1732 | "[ -a action ] [ -A action mask ] [ -v ]\n\n" \ |
1733 | "\t-d Use specified device. May also be given last after options\n" \ | |
3d06efea | 1734 | "\t-r Path to mounted debugfs, defaults to /debug\n" \ |
52724a0e | 1735 | "\t-o File(s) to send output to\n" \ |
d1d7f15f | 1736 | "\t-D Directory to prepend to output file names\n" \ |
52724a0e JA |
1737 | "\t-k Kill a running trace\n" \ |
1738 | "\t-w Stop after defined time, in seconds\n" \ | |
1739 | "\t-a Only trace specified actions. See documentation\n" \ | |
1740 | "\t-A Give trace mask as a single value. See documentation\n" \ | |
129aa440 JA |
1741 | "\t-b Sub buffer size in KiB\n" \ |
1742 | "\t-n Number of sub buffers\n" \ | |
f531b94d JA |
1743 | "\t-l Run in network listen mode (blktrace server)\n" \ |
1744 | "\t-h Run in network client mode, connecting to the given host\n" \ | |
1745 | "\t-p Network port to use (default 8462)\n" \ | |
ff11d54c | 1746 | "\t-s Make the network client NOT use sendfile() to transfer data\n" \ |
f531b94d | 1747 | "\t-V Print program version info\n\n"; |
52724a0e | 1748 | |
ee1f4158 NS |
1749 | static void show_usage(char *program) |
1750 | { | |
52724a0e | 1751 | fprintf(stderr, "Usage: %s %s %s",program, blktrace_version, usage_str); |
ee1f4158 | 1752 | } |
d0ca268b JA |
1753 | |
1754 | int main(int argc, char *argv[]) | |
1755 | { | |
3d06efea | 1756 | static char default_debugfs_path[] = "/debug"; |
e3e74029 | 1757 | struct statfs st; |
d39c04ca | 1758 | int i, c; |
ece238a6 | 1759 | int stop_watch = 0; |
d39c04ca AB |
1760 | int act_mask_tmp = 0; |
1761 | ||
1762 | while ((c = getopt_long(argc, argv, S_OPTS, l_opts, NULL)) >= 0) { | |
1763 | switch (c) { | |
1764 | case 'a': | |
1765 | i = find_mask_map(optarg); | |
1766 | if (i < 0) { | |
ab197ca7 | 1767 | fprintf(stderr,"Invalid action mask %s\n", |
d39c04ca | 1768 | optarg); |
7425d456 | 1769 | return 1; |
d39c04ca AB |
1770 | } |
1771 | act_mask_tmp |= i; | |
1772 | break; | |
1773 | ||
1774 | case 'A': | |
98f8386b AB |
1775 | if ((sscanf(optarg, "%x", &i) != 1) || |
1776 | !valid_act_opt(i)) { | |
d39c04ca | 1777 | fprintf(stderr, |
ab197ca7 | 1778 | "Invalid set action mask %s/0x%x\n", |
d39c04ca | 1779 | optarg, i); |
7425d456 | 1780 | return 1; |
d39c04ca AB |
1781 | } |
1782 | act_mask_tmp = i; | |
1783 | break; | |
d0ca268b | 1784 | |
d39c04ca | 1785 | case 'd': |
e7c9f3ff NS |
1786 | if (resize_devices(optarg) != 0) |
1787 | return 1; | |
d39c04ca AB |
1788 | break; |
1789 | ||
5270dddd | 1790 | case 'r': |
3d06efea | 1791 | debugfs_path = optarg; |
5270dddd JA |
1792 | break; |
1793 | ||
d5396421 | 1794 | case 'o': |
66efebf8 | 1795 | output_name = optarg; |
d5396421 | 1796 | break; |
bc39777c JA |
1797 | case 'k': |
1798 | kill_running_trace = 1; | |
1799 | break; | |
ece238a6 NS |
1800 | case 'w': |
1801 | stop_watch = atoi(optarg); | |
1802 | if (stop_watch <= 0) { | |
1803 | fprintf(stderr, | |
1804 | "Invalid stopwatch value (%d secs)\n", | |
1805 | stop_watch); | |
1806 | return 1; | |
1807 | } | |
1808 | break; | |
57ea8602 | 1809 | case 'V': |
52724a0e JA |
1810 | printf("%s version %s\n", argv[0], blktrace_version); |
1811 | return 0; | |
129aa440 | 1812 | case 'b': |
eb3c8108 | 1813 | buf_size = strtoul(optarg, NULL, 10); |
183a0855 | 1814 | if (buf_size <= 0 || buf_size > 16*1024) { |
129aa440 | 1815 | fprintf(stderr, |
eb3c8108 | 1816 | "Invalid buffer size (%lu)\n",buf_size); |
129aa440 JA |
1817 | return 1; |
1818 | } | |
1819 | buf_size <<= 10; | |
1820 | break; | |
1821 | case 'n': | |
eb3c8108 | 1822 | buf_nr = strtoul(optarg, NULL, 10); |
129aa440 JA |
1823 | if (buf_nr <= 0) { |
1824 | fprintf(stderr, | |
eb3c8108 | 1825 | "Invalid buffer nr (%lu)\n", buf_nr); |
129aa440 JA |
1826 | return 1; |
1827 | } | |
1828 | break; | |
d1d7f15f JA |
1829 | case 'D': |
1830 | output_dir = optarg; | |
1831 | break; | |
8e86c98a JA |
1832 | case 'h': |
1833 | net_mode = Net_client; | |
1834 | strcpy(hostname, optarg); | |
1835 | break; | |
1836 | case 'l': | |
1837 | net_mode = Net_server; | |
1838 | break; | |
1839 | case 'p': | |
1840 | net_port = atoi(optarg); | |
1841 | break; | |
32f18c48 | 1842 | case 's': |
79971f43 | 1843 | net_use_sendfile = 0; |
32f18c48 | 1844 | break; |
d39c04ca | 1845 | default: |
ee1f4158 | 1846 | show_usage(argv[0]); |
7425d456 | 1847 | return 1; |
d39c04ca AB |
1848 | } |
1849 | } | |
1850 | ||
8e86c98a JA |
1851 | setlocale(LC_NUMERIC, "en_US"); |
1852 | ||
1853 | page_size = getpagesize(); | |
1854 | ||
1855 | if (net_mode == Net_server) | |
1856 | return net_server(); | |
1857 | ||
22cd0c02 JA |
1858 | while (optind < argc) { |
1859 | if (resize_devices(argv[optind++]) != 0) | |
1860 | return 1; | |
1861 | } | |
1862 | ||
e7c9f3ff | 1863 | if (ndevs == 0) { |
ee1f4158 | 1864 | show_usage(argv[0]); |
7425d456 | 1865 | return 1; |
d39c04ca AB |
1866 | } |
1867 | ||
d5396421 | 1868 | if (act_mask_tmp != 0) |
d39c04ca | 1869 | act_mask = act_mask_tmp; |
d0ca268b | 1870 | |
3d06efea JA |
1871 | if (!debugfs_path) |
1872 | debugfs_path = default_debugfs_path; | |
1873 | ||
1874 | if (statfs(debugfs_path, &st) < 0) { | |
e3e74029 NS |
1875 | perror("statfs"); |
1876 | fprintf(stderr,"%s does not appear to be a valid path\n", | |
3d06efea | 1877 | debugfs_path); |
e3e74029 | 1878 | return 1; |
3d06efea JA |
1879 | } else if (st.f_type != (long) DEBUGFS_TYPE) { |
1880 | fprintf(stderr,"%s does not appear to be a debug filesystem\n", | |
1881 | debugfs_path); | |
7425d456 | 1882 | return 1; |
d0ca268b JA |
1883 | } |
1884 | ||
e7c9f3ff | 1885 | if (open_devices() != 0) |
7425d456 | 1886 | return 1; |
bc39777c JA |
1887 | |
1888 | if (kill_running_trace) { | |
e7c9f3ff | 1889 | stop_all_traces(); |
7425d456 | 1890 | return 0; |
bc39777c JA |
1891 | } |
1892 | ||
e7c9f3ff NS |
1893 | ncpus = sysconf(_SC_NPROCESSORS_ONLN); |
1894 | if (ncpus < 0) { | |
1895 | fprintf(stderr, "sysconf(_SC_NPROCESSORS_ONLN) failed\n"); | |
7425d456 | 1896 | return 1; |
d0ca268b JA |
1897 | } |
1898 | ||
d0ca268b JA |
1899 | signal(SIGINT, handle_sigint); |
1900 | signal(SIGHUP, handle_sigint); | |
1901 | signal(SIGTERM, handle_sigint); | |
ece238a6 | 1902 | signal(SIGALRM, handle_sigint); |
d0ca268b | 1903 | |
8e86c98a JA |
1904 | if (net_mode == Net_client && net_setup_client()) |
1905 | return 1; | |
1906 | ||
1907 | if (start_devices() != 0) | |
1908 | return 1; | |
1909 | ||
e7c9f3ff | 1910 | atexit(stop_all_tracing); |
830fd65c | 1911 | |
ece238a6 NS |
1912 | if (stop_watch) |
1913 | alarm(stop_watch); | |
1914 | ||
b7106311 | 1915 | wait_for_threads(); |
d0ca268b | 1916 | |
eb3c8108 JA |
1917 | if (!is_trace_stopped()) { |
1918 | trace_stopped = 1; | |
91816d54 JA |
1919 | stop_all_threads(); |
1920 | stop_all_traces(); | |
91816d54 | 1921 | } |
d0ca268b | 1922 | |
e0a1988b | 1923 | show_stats(device_information, ndevs, ncpus); |
eb3c8108 | 1924 | |
d0ca268b JA |
1925 | return 0; |
1926 | } | |
1927 |