Commit | Line | Data |
---|---|---|
71d5d4c9 JA |
1 | /* |
2 | * This file contains format parsing code for blkparse, allowing you to | |
3 | * customize the individual action format and generel output format. | |
4 | */ | |
5 | #include <stdio.h> | |
6 | #include <string.h> | |
7 | #include <stdlib.h> | |
8 | #include <unistd.h> | |
9 | #include <ctype.h> | |
10 | ||
11 | #include "blktrace.h" | |
12 | ||
a8f30e64 | 13 | #define VALID_SPECS "ABCDFGMPQRSTUWX" |
71d5d4c9 JA |
14 | |
15 | #define HEADER "%D %2c %8s %5T.%9t %5p %2a %3d " | |
16 | ||
17 | static char *override_format[256]; | |
18 | ||
19 | static inline int valid_spec(int spec) | |
20 | { | |
21 | return strchr(VALID_SPECS, spec) != NULL; | |
22 | } | |
23 | ||
e820abd7 | 24 | void set_all_format_specs(char *option) |
71d5d4c9 JA |
25 | { |
26 | char *p; | |
27 | ||
28 | for (p = VALID_SPECS; *p; p++) | |
29 | if (override_format[(int)(*p)] == NULL) | |
e820abd7 | 30 | override_format[(int)(*p)] = strdup(option); |
71d5d4c9 JA |
31 | } |
32 | ||
e820abd7 | 33 | int add_format_spec(char *option) |
71d5d4c9 JA |
34 | { |
35 | int spec = optarg[0]; | |
36 | ||
37 | if (!valid_spec(spec)) { | |
38 | fprintf(stderr,"Bad format specifier %c\n", spec); | |
39 | return 1; | |
40 | } | |
41 | if (optarg[1] != ',') { | |
e820abd7 | 42 | fprintf(stderr,"Bad format specifier - need ',' %s\n", option); |
71d5d4c9 JA |
43 | return 1; |
44 | } | |
e820abd7 JA |
45 | option += 2; |
46 | if (*option == '\0') { | |
47 | fprintf(stderr,"Bad format specifier - need fmt %s\n", option); | |
71d5d4c9 JA |
48 | return 1; |
49 | } | |
50 | ||
51 | /* | |
52 | * Set both merges (front and back) | |
53 | */ | |
54 | if (spec == 'M') { | |
e820abd7 JA |
55 | override_format['B'] = strdup(option); |
56 | override_format['M'] = strdup(option); | |
71d5d4c9 | 57 | } else |
e820abd7 | 58 | override_format[spec] = strdup(option); |
71d5d4c9 JA |
59 | |
60 | return 0; | |
61 | } | |
62 | ||
768277cc JA |
63 | static inline void fill_rwbs(char *rwbs, struct blk_io_trace *t) |
64 | { | |
65 | int w = t->action & BLK_TC_ACT(BLK_TC_WRITE); | |
f86990ed | 66 | int a = t->action & BLK_TC_ACT(BLK_TC_AHEAD); |
768277cc JA |
67 | int b = t->action & BLK_TC_ACT(BLK_TC_BARRIER); |
68 | int s = t->action & BLK_TC_ACT(BLK_TC_SYNC); | |
711e4d25 | 69 | int m = t->action & BLK_TC_ACT(BLK_TC_META); |
768277cc JA |
70 | int i = 0; |
71 | ||
72 | if (w) | |
73 | rwbs[i++] = 'W'; | |
74 | else | |
75 | rwbs[i++] = 'R'; | |
f86990ed NS |
76 | if (a) |
77 | rwbs[i++] = 'A'; | |
768277cc JA |
78 | if (b) |
79 | rwbs[i++] = 'B'; | |
80 | if (s) | |
81 | rwbs[i++] = 'S'; | |
711e4d25 JA |
82 | if (m) |
83 | rwbs[i++] = 'M'; | |
768277cc JA |
84 | |
85 | rwbs[i] = '\0'; | |
86 | } | |
87 | ||
63756b50 | 88 | static inline int pdu_rest_is_zero(unsigned char *pdu, int len) |
1d6376a5 | 89 | { |
63756b50 | 90 | static char zero[4096]; |
1d6376a5 | 91 | |
63756b50 | 92 | return !memcmp(pdu, zero, len); |
1d6376a5 JA |
93 | } |
94 | ||
768277cc JA |
95 | static char *dump_pdu(unsigned char *pdu_buf, int pdu_len) |
96 | { | |
97 | static char p[4096]; | |
98 | int i, len; | |
99 | ||
100 | if (!pdu_buf || !pdu_len) | |
101 | return NULL; | |
102 | ||
103 | for (len = 0, i = 0; i < pdu_len; i++) { | |
104 | if (i) | |
105 | len += sprintf(p + len, " "); | |
106 | ||
107 | len += sprintf(p + len, "%02x", pdu_buf[i]); | |
1d6376a5 JA |
108 | |
109 | /* | |
110 | * usually dump for cdb dumps where we can see lots of | |
111 | * zeroes, stop when the rest is just zeroes and indicate | |
112 | * so with a .. appended | |
113 | */ | |
114 | if (!pdu_buf[i] && pdu_rest_is_zero(pdu_buf + i, pdu_len - i)) { | |
115 | sprintf(p + len, " .."); | |
116 | break; | |
117 | } | |
768277cc JA |
118 | } |
119 | ||
120 | return p; | |
121 | } | |
122 | ||
a8f30e64 JA |
123 | #define pdu_start(t) (((void *) (t) + sizeof(struct blk_io_trace))) |
124 | ||
768277cc JA |
125 | static unsigned int get_pdu_int(struct blk_io_trace *t) |
126 | { | |
a8f30e64 | 127 | __u64 *val = pdu_start(t); |
768277cc JA |
128 | |
129 | return be64_to_cpu(*val); | |
130 | } | |
131 | ||
a8f30e64 JA |
132 | static void get_pdu_remap(struct blk_io_trace *t, struct blk_io_trace_remap *r) |
133 | { | |
134 | struct blk_io_trace_remap *__r = pdu_start(t); | |
663af819 | 135 | __u64 sector = __r->sector; |
a8f30e64 JA |
136 | |
137 | r->device = be32_to_cpu(__r->device); | |
97d13fb0 | 138 | r->device_from = be32_to_cpu(__r->device_from); |
663af819 | 139 | r->sector = be64_to_cpu(sector); |
a8f30e64 JA |
140 | } |
141 | ||
71d5d4c9 JA |
142 | static void print_field(char *act, struct per_cpu_info *pci, |
143 | struct blk_io_trace *t, unsigned long long elapsed, | |
144 | int pdu_len, unsigned char *pdu_buf, char field, | |
145 | int minus, int has_w, int width) | |
146 | { | |
147 | char format[64]; | |
148 | ||
149 | if (has_w) { | |
150 | if (minus) | |
151 | sprintf(format, "%%-%d", width); | |
152 | else | |
153 | sprintf(format, "%%%d", width); | |
154 | } else | |
155 | sprintf(format, "%%"); | |
156 | ||
157 | switch (field) { | |
158 | case 'a': | |
159 | fprintf(ofp, strcat(format, "s"), act); | |
160 | break; | |
161 | case 'c': | |
162 | fprintf(ofp, strcat(format, "d"), pci->cpu); | |
163 | break; | |
bfc70ad5 JA |
164 | case 'C': { |
165 | char *name = find_process_name(t->pid); | |
166 | ||
167 | fprintf(ofp, strcat(format, "s"), name); | |
71d5d4c9 | 168 | break; |
bfc70ad5 | 169 | } |
71d5d4c9 | 170 | case 'd': { |
711e4d25 | 171 | char rwbs[6]; |
768277cc JA |
172 | |
173 | fill_rwbs(rwbs, t); | |
71d5d4c9 JA |
174 | fprintf(ofp, strcat(format, "s"), rwbs); |
175 | break; | |
176 | } | |
177 | case 'D': /* format width ignored */ | |
178 | fprintf(ofp,"%3d,%-3d", MAJOR(t->device), MINOR(t->device)); | |
179 | break; | |
180 | case 'e': | |
181 | fprintf(ofp, strcat(format, "d"), t->error); | |
182 | break; | |
183 | case 'M': | |
184 | fprintf(ofp, strcat(format, "d"), MAJOR(t->device)); | |
185 | break; | |
186 | case 'm': | |
187 | fprintf(ofp, strcat(format, "d"), MINOR(t->device)); | |
188 | break; | |
189 | case 'n': | |
ae957cbc | 190 | fprintf(ofp, strcat(format, "u"), t_sec(t)); |
71d5d4c9 | 191 | break; |
1c8ca7b5 JA |
192 | case 'N': |
193 | fprintf(ofp, strcat(format, "u"), t->bytes); | |
194 | break; | |
71d5d4c9 JA |
195 | case 'p': |
196 | fprintf(ofp, strcat(format, "u"), t->pid); | |
197 | break; | |
768277cc JA |
198 | case 'P': { /* format width ignored */ |
199 | char *p = dump_pdu(pdu_buf, pdu_len); | |
200 | if (p) | |
201 | fprintf(ofp, "%s", p); | |
71d5d4c9 | 202 | break; |
768277cc | 203 | } |
71d5d4c9 JA |
204 | case 's': |
205 | fprintf(ofp, strcat(format, "ld"), t->sequence); | |
206 | break; | |
207 | case 'S': | |
208 | fprintf(ofp, strcat(format, "lu"), t->sector); | |
209 | break; | |
210 | case 't': | |
211 | sprintf(format, "%%0%dlu", has_w ? width : 9); | |
212 | fprintf(ofp, format, NANO_SECONDS(t->time)); | |
213 | break; | |
214 | case 'T': | |
215 | fprintf(ofp, strcat(format, "d"), SECONDS(t->time)); | |
216 | break; | |
217 | case 'u': | |
218 | if (elapsed == -1ULL) { | |
219 | fprintf(stderr, "Expecting elapsed value\n"); | |
220 | exit(1); | |
221 | } | |
222 | fprintf(ofp, strcat(format, "llu"), elapsed / 1000); | |
223 | break; | |
224 | case 'U': { | |
768277cc | 225 | fprintf(ofp, strcat(format, "u"), get_pdu_int(t)); |
71d5d4c9 JA |
226 | break; |
227 | } | |
228 | default: | |
229 | fprintf(ofp,strcat(format, "c"), field); | |
230 | break; | |
231 | } | |
232 | } | |
233 | ||
768277cc JA |
234 | static char *parse_field(char *act, struct per_cpu_info *pci, |
235 | struct blk_io_trace *t, unsigned long long elapsed, | |
236 | int pdu_len, unsigned char *pdu_buf, | |
71d5d4c9 JA |
237 | char *master_format) |
238 | { | |
239 | int minus = 0; | |
240 | int has_w = 0; | |
241 | int width = 0; | |
242 | char *p = master_format; | |
243 | ||
244 | if (*p == '-') { | |
245 | minus = 1; | |
246 | p++; | |
247 | } | |
248 | if (isdigit(*p)) { | |
249 | has_w = 1; | |
250 | do { | |
251 | width = (width * 10) + (*p++ - '0'); | |
252 | } while ((*p) && (isdigit(*p))); | |
253 | } | |
254 | if (*p) { | |
255 | print_field(act, pci, t, elapsed, pdu_len, pdu_buf, *p++, | |
256 | minus, has_w, width); | |
257 | } | |
258 | return p; | |
259 | } | |
260 | ||
768277cc JA |
261 | static void process_default(char *act, struct per_cpu_info *pci, |
262 | struct blk_io_trace *t, unsigned long long elapsed, | |
263 | int pdu_len, unsigned char *pdu_buf) | |
71d5d4c9 | 264 | { |
97d13fb0 | 265 | struct blk_io_trace_remap r = { .device = 0, }; |
711e4d25 | 266 | char rwbs[6]; |
bfc70ad5 | 267 | char *name; |
71d5d4c9 | 268 | |
768277cc JA |
269 | fill_rwbs(rwbs, t); |
270 | ||
271 | /* | |
272 | * The header is always the same | |
273 | */ | |
97d13fb0 AB |
274 | if (act[0] == 'A') { /* Remap */ |
275 | get_pdu_remap(t, &r); | |
276 | t->device = r.device_from; | |
277 | } | |
278 | ||
768277cc JA |
279 | fprintf(ofp, "%3d,%-3d %2d %8d %5d.%09lu %5u %2s %3s ", |
280 | MAJOR(t->device), MINOR(t->device), pci->cpu, t->sequence, | |
281 | (int) SECONDS(t->time), (unsigned long) NANO_SECONDS(t->time), | |
282 | t->pid, act, rwbs); | |
71d5d4c9 | 283 | |
bfc70ad5 JA |
284 | name = find_process_name(t->pid); |
285 | ||
768277cc | 286 | switch (act[0]) { |
80c53608 | 287 | case 'R': /* Requeue */ |
71d5d4c9 | 288 | case 'C': /* Complete */ |
768277cc JA |
289 | if (t->action & BLK_TC_ACT(BLK_TC_PC)) { |
290 | char *p = dump_pdu(pdu_buf, pdu_len); | |
291 | if (p) | |
292 | fprintf(ofp, "(%s) ", p); | |
293 | fprintf(ofp, "[%d]\n", t->error); | |
294 | } else { | |
71d5d4c9 | 295 | if (elapsed != -1ULL) { |
768277cc JA |
296 | fprintf(ofp, "%llu + %u (%8llu) [%d]\n", |
297 | (unsigned long long) t->sector, | |
ae957cbc | 298 | t_sec(t), elapsed, t->error); |
768277cc JA |
299 | } else { |
300 | fprintf(ofp, "%llu + %u [%d]\n", | |
301 | (unsigned long long) t->sector, | |
ae957cbc | 302 | t_sec(t), t->error); |
768277cc | 303 | } |
71d5d4c9 | 304 | } |
71d5d4c9 JA |
305 | break; |
306 | ||
307 | case 'D': /* Issue */ | |
71d5d4c9 | 308 | case 'I': /* Insert */ |
71d5d4c9 JA |
309 | case 'Q': /* Queue */ |
310 | case 'W': /* Bounce */ | |
768277cc JA |
311 | if (t->action & BLK_TC_ACT(BLK_TC_PC)) { |
312 | char *p; | |
1c8ca7b5 | 313 | fprintf(ofp, "%u ", t->bytes); |
768277cc JA |
314 | p = dump_pdu(pdu_buf, pdu_len); |
315 | if (p) | |
316 | fprintf(ofp, "(%s) ", p); | |
bfc70ad5 | 317 | fprintf(ofp, "[%s]\n", name); |
768277cc JA |
318 | } else { |
319 | if (elapsed != -1ULL) { | |
320 | fprintf(ofp, "%llu + %u (%8llu) [%s]\n", | |
321 | (unsigned long long) t->sector, | |
bfc70ad5 | 322 | t_sec(t), elapsed, name); |
768277cc JA |
323 | } else { |
324 | fprintf(ofp, "%llu + %u [%s]\n", | |
325 | (unsigned long long) t->sector, | |
bfc70ad5 | 326 | t_sec(t), name); |
768277cc JA |
327 | } |
328 | } | |
71d5d4c9 JA |
329 | break; |
330 | ||
331 | case 'B': /* Back merge */ | |
332 | case 'F': /* Front merge */ | |
333 | case 'M': /* Front or back merge */ | |
768277cc JA |
334 | case 'G': /* Get request */ |
335 | case 'S': /* Sleep request */ | |
336 | fprintf(ofp, "%llu + %u [%s]\n", (unsigned long long) t->sector, | |
bfc70ad5 | 337 | t_sec(t), name); |
71d5d4c9 JA |
338 | break; |
339 | ||
340 | case 'P': /* Plug */ | |
bfc70ad5 | 341 | fprintf(ofp, "[%s]\n", name); |
71d5d4c9 JA |
342 | break; |
343 | ||
344 | case 'U': /* Unplug IO */ | |
a8f30e64 | 345 | case 'T': /* Unplug timer */ |
bfc70ad5 | 346 | fprintf(ofp, "[%s] %u\n", name, get_pdu_int(t)); |
71d5d4c9 JA |
347 | break; |
348 | ||
97d13fb0 | 349 | case 'A': /* remap */ |
a8f30e64 | 350 | fprintf(ofp, "%llu + %u <- (%d,%d) %llu\n", |
e9f883ca | 351 | (unsigned long long) t->sector, t_sec(t), |
a8f30e64 | 352 | MAJOR(r.device), MINOR(r.device), |
e9f883ca | 353 | (unsigned long long) r.sector); |
a8f30e64 | 354 | break; |
a8f30e64 | 355 | |
71d5d4c9 | 356 | case 'X': /* Split */ |
768277cc | 357 | fprintf(ofp, "%llu / %u [%s]\n", (unsigned long long) t->sector, |
bfc70ad5 | 358 | get_pdu_int(t), name); |
71d5d4c9 JA |
359 | break; |
360 | ||
361 | default: | |
768277cc JA |
362 | fprintf(stderr, "Unknown action %c\n", act[0]); |
363 | break; | |
71d5d4c9 JA |
364 | } |
365 | ||
71d5d4c9 JA |
366 | } |
367 | ||
368 | void process_fmt(char *act, struct per_cpu_info *pci, struct blk_io_trace *t, | |
369 | unsigned long long elapsed, int pdu_len, | |
370 | unsigned char *pdu_buf) | |
371 | { | |
768277cc JA |
372 | char *p = override_format[(int) *act]; |
373 | ||
374 | if (!p) { | |
375 | process_default(act, pci, t, elapsed, pdu_len, pdu_buf); | |
376 | return; | |
377 | } | |
71d5d4c9 JA |
378 | |
379 | while (*p) { | |
380 | switch (*p) { | |
381 | case '%': /* Field specifier */ | |
382 | p++; | |
383 | if (*p == '%') | |
384 | fprintf(ofp, "%c", *p++); | |
385 | else if (!*p) | |
386 | fprintf(ofp, "%c", '%'); | |
387 | else | |
388 | p = parse_field(act, pci, t, elapsed, | |
389 | pdu_len, pdu_buf, p); | |
390 | break; | |
391 | case '\\': { /* escape */ | |
392 | switch (p[1]) { | |
393 | case 'b': fprintf(ofp, "\b"); break; | |
394 | case 'n': fprintf(ofp, "\n"); break; | |
395 | case 'r': fprintf(ofp, "\r"); break; | |
396 | case 't': fprintf(ofp, "\t"); break; | |
397 | default: | |
398 | fprintf(stderr, | |
399 | "Invalid escape char in format %c\n", | |
400 | p[1]); | |
401 | exit(1); | |
402 | /*NOTREACHED*/ | |
403 | } | |
404 | p += 2; | |
405 | break; | |
406 | } | |
407 | default: | |
408 | fprintf(ofp, "%c", *p++); | |
409 | break; | |
410 | } | |
411 | } | |
412 | } | |
413 | ||
414 |