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); | |
663af819 | 138 | r->sector = be64_to_cpu(sector); |
a8f30e64 JA |
139 | } |
140 | ||
71d5d4c9 JA |
141 | static void print_field(char *act, struct per_cpu_info *pci, |
142 | struct blk_io_trace *t, unsigned long long elapsed, | |
143 | int pdu_len, unsigned char *pdu_buf, char field, | |
144 | int minus, int has_w, int width) | |
145 | { | |
146 | char format[64]; | |
147 | ||
148 | if (has_w) { | |
149 | if (minus) | |
150 | sprintf(format, "%%-%d", width); | |
151 | else | |
152 | sprintf(format, "%%%d", width); | |
153 | } else | |
154 | sprintf(format, "%%"); | |
155 | ||
156 | switch (field) { | |
157 | case 'a': | |
158 | fprintf(ofp, strcat(format, "s"), act); | |
159 | break; | |
160 | case 'c': | |
161 | fprintf(ofp, strcat(format, "d"), pci->cpu); | |
162 | break; | |
bfc70ad5 JA |
163 | case 'C': { |
164 | char *name = find_process_name(t->pid); | |
165 | ||
166 | fprintf(ofp, strcat(format, "s"), name); | |
71d5d4c9 | 167 | break; |
bfc70ad5 | 168 | } |
71d5d4c9 | 169 | case 'd': { |
711e4d25 | 170 | char rwbs[6]; |
768277cc JA |
171 | |
172 | fill_rwbs(rwbs, t); | |
71d5d4c9 JA |
173 | fprintf(ofp, strcat(format, "s"), rwbs); |
174 | break; | |
175 | } | |
176 | case 'D': /* format width ignored */ | |
177 | fprintf(ofp,"%3d,%-3d", MAJOR(t->device), MINOR(t->device)); | |
178 | break; | |
179 | case 'e': | |
180 | fprintf(ofp, strcat(format, "d"), t->error); | |
181 | break; | |
182 | case 'M': | |
183 | fprintf(ofp, strcat(format, "d"), MAJOR(t->device)); | |
184 | break; | |
185 | case 'm': | |
186 | fprintf(ofp, strcat(format, "d"), MINOR(t->device)); | |
187 | break; | |
188 | case 'n': | |
ae957cbc | 189 | fprintf(ofp, strcat(format, "u"), t_sec(t)); |
71d5d4c9 | 190 | break; |
1c8ca7b5 JA |
191 | case 'N': |
192 | fprintf(ofp, strcat(format, "u"), t->bytes); | |
193 | break; | |
71d5d4c9 JA |
194 | case 'p': |
195 | fprintf(ofp, strcat(format, "u"), t->pid); | |
196 | break; | |
768277cc JA |
197 | case 'P': { /* format width ignored */ |
198 | char *p = dump_pdu(pdu_buf, pdu_len); | |
199 | if (p) | |
200 | fprintf(ofp, "%s", p); | |
71d5d4c9 | 201 | break; |
768277cc | 202 | } |
71d5d4c9 JA |
203 | case 's': |
204 | fprintf(ofp, strcat(format, "ld"), t->sequence); | |
205 | break; | |
206 | case 'S': | |
207 | fprintf(ofp, strcat(format, "lu"), t->sector); | |
208 | break; | |
209 | case 't': | |
210 | sprintf(format, "%%0%dlu", has_w ? width : 9); | |
211 | fprintf(ofp, format, NANO_SECONDS(t->time)); | |
212 | break; | |
213 | case 'T': | |
214 | fprintf(ofp, strcat(format, "d"), SECONDS(t->time)); | |
215 | break; | |
216 | case 'u': | |
217 | if (elapsed == -1ULL) { | |
218 | fprintf(stderr, "Expecting elapsed value\n"); | |
219 | exit(1); | |
220 | } | |
221 | fprintf(ofp, strcat(format, "llu"), elapsed / 1000); | |
222 | break; | |
223 | case 'U': { | |
768277cc | 224 | fprintf(ofp, strcat(format, "u"), get_pdu_int(t)); |
71d5d4c9 JA |
225 | break; |
226 | } | |
227 | default: | |
228 | fprintf(ofp,strcat(format, "c"), field); | |
229 | break; | |
230 | } | |
231 | } | |
232 | ||
768277cc JA |
233 | static char *parse_field(char *act, struct per_cpu_info *pci, |
234 | struct blk_io_trace *t, unsigned long long elapsed, | |
235 | int pdu_len, unsigned char *pdu_buf, | |
71d5d4c9 JA |
236 | char *master_format) |
237 | { | |
238 | int minus = 0; | |
239 | int has_w = 0; | |
240 | int width = 0; | |
241 | char *p = master_format; | |
242 | ||
243 | if (*p == '-') { | |
244 | minus = 1; | |
245 | p++; | |
246 | } | |
247 | if (isdigit(*p)) { | |
248 | has_w = 1; | |
249 | do { | |
250 | width = (width * 10) + (*p++ - '0'); | |
251 | } while ((*p) && (isdigit(*p))); | |
252 | } | |
253 | if (*p) { | |
254 | print_field(act, pci, t, elapsed, pdu_len, pdu_buf, *p++, | |
255 | minus, has_w, width); | |
256 | } | |
257 | return p; | |
258 | } | |
259 | ||
768277cc JA |
260 | static void process_default(char *act, struct per_cpu_info *pci, |
261 | struct blk_io_trace *t, unsigned long long elapsed, | |
262 | int pdu_len, unsigned char *pdu_buf) | |
71d5d4c9 | 263 | { |
711e4d25 | 264 | char rwbs[6]; |
bfc70ad5 | 265 | char *name; |
71d5d4c9 | 266 | |
768277cc JA |
267 | fill_rwbs(rwbs, t); |
268 | ||
269 | /* | |
270 | * The header is always the same | |
271 | */ | |
272 | fprintf(ofp, "%3d,%-3d %2d %8d %5d.%09lu %5u %2s %3s ", | |
273 | MAJOR(t->device), MINOR(t->device), pci->cpu, t->sequence, | |
274 | (int) SECONDS(t->time), (unsigned long) NANO_SECONDS(t->time), | |
275 | t->pid, act, rwbs); | |
71d5d4c9 | 276 | |
bfc70ad5 JA |
277 | name = find_process_name(t->pid); |
278 | ||
768277cc | 279 | switch (act[0]) { |
80c53608 | 280 | case 'R': /* Requeue */ |
71d5d4c9 | 281 | case 'C': /* Complete */ |
768277cc JA |
282 | if (t->action & BLK_TC_ACT(BLK_TC_PC)) { |
283 | char *p = dump_pdu(pdu_buf, pdu_len); | |
284 | if (p) | |
285 | fprintf(ofp, "(%s) ", p); | |
286 | fprintf(ofp, "[%d]\n", t->error); | |
287 | } else { | |
71d5d4c9 | 288 | if (elapsed != -1ULL) { |
768277cc JA |
289 | fprintf(ofp, "%llu + %u (%8llu) [%d]\n", |
290 | (unsigned long long) t->sector, | |
ae957cbc | 291 | t_sec(t), elapsed, t->error); |
768277cc JA |
292 | } else { |
293 | fprintf(ofp, "%llu + %u [%d]\n", | |
294 | (unsigned long long) t->sector, | |
ae957cbc | 295 | t_sec(t), t->error); |
768277cc | 296 | } |
71d5d4c9 | 297 | } |
71d5d4c9 JA |
298 | break; |
299 | ||
300 | case 'D': /* Issue */ | |
71d5d4c9 | 301 | case 'I': /* Insert */ |
71d5d4c9 JA |
302 | case 'Q': /* Queue */ |
303 | case 'W': /* Bounce */ | |
768277cc JA |
304 | if (t->action & BLK_TC_ACT(BLK_TC_PC)) { |
305 | char *p; | |
1c8ca7b5 | 306 | fprintf(ofp, "%u ", t->bytes); |
768277cc JA |
307 | p = dump_pdu(pdu_buf, pdu_len); |
308 | if (p) | |
309 | fprintf(ofp, "(%s) ", p); | |
bfc70ad5 | 310 | fprintf(ofp, "[%s]\n", name); |
768277cc JA |
311 | } else { |
312 | if (elapsed != -1ULL) { | |
313 | fprintf(ofp, "%llu + %u (%8llu) [%s]\n", | |
314 | (unsigned long long) t->sector, | |
bfc70ad5 | 315 | t_sec(t), elapsed, name); |
768277cc JA |
316 | } else { |
317 | fprintf(ofp, "%llu + %u [%s]\n", | |
318 | (unsigned long long) t->sector, | |
bfc70ad5 | 319 | t_sec(t), name); |
768277cc JA |
320 | } |
321 | } | |
71d5d4c9 JA |
322 | break; |
323 | ||
324 | case 'B': /* Back merge */ | |
325 | case 'F': /* Front merge */ | |
326 | case 'M': /* Front or back merge */ | |
768277cc JA |
327 | case 'G': /* Get request */ |
328 | case 'S': /* Sleep request */ | |
329 | fprintf(ofp, "%llu + %u [%s]\n", (unsigned long long) t->sector, | |
bfc70ad5 | 330 | t_sec(t), name); |
71d5d4c9 JA |
331 | break; |
332 | ||
333 | case 'P': /* Plug */ | |
bfc70ad5 | 334 | fprintf(ofp, "[%s]\n", name); |
71d5d4c9 JA |
335 | break; |
336 | ||
337 | case 'U': /* Unplug IO */ | |
a8f30e64 | 338 | case 'T': /* Unplug timer */ |
bfc70ad5 | 339 | fprintf(ofp, "[%s] %u\n", name, get_pdu_int(t)); |
71d5d4c9 JA |
340 | break; |
341 | ||
a8f30e64 JA |
342 | case 'A': { /* remap */ |
343 | struct blk_io_trace_remap r; | |
344 | ||
345 | get_pdu_remap(t, &r); | |
346 | fprintf(ofp, "%llu + %u <- (%d,%d) %llu\n", | |
e9f883ca | 347 | (unsigned long long) t->sector, t_sec(t), |
a8f30e64 | 348 | MAJOR(r.device), MINOR(r.device), |
e9f883ca | 349 | (unsigned long long) r.sector); |
a8f30e64 JA |
350 | break; |
351 | } | |
352 | ||
71d5d4c9 | 353 | case 'X': /* Split */ |
768277cc | 354 | fprintf(ofp, "%llu / %u [%s]\n", (unsigned long long) t->sector, |
bfc70ad5 | 355 | get_pdu_int(t), name); |
71d5d4c9 JA |
356 | break; |
357 | ||
358 | default: | |
768277cc JA |
359 | fprintf(stderr, "Unknown action %c\n", act[0]); |
360 | break; | |
71d5d4c9 JA |
361 | } |
362 | ||
71d5d4c9 JA |
363 | } |
364 | ||
365 | void process_fmt(char *act, struct per_cpu_info *pci, struct blk_io_trace *t, | |
366 | unsigned long long elapsed, int pdu_len, | |
367 | unsigned char *pdu_buf) | |
368 | { | |
768277cc JA |
369 | char *p = override_format[(int) *act]; |
370 | ||
371 | if (!p) { | |
372 | process_default(act, pci, t, elapsed, pdu_len, pdu_buf); | |
373 | return; | |
374 | } | |
71d5d4c9 JA |
375 | |
376 | while (*p) { | |
377 | switch (*p) { | |
378 | case '%': /* Field specifier */ | |
379 | p++; | |
380 | if (*p == '%') | |
381 | fprintf(ofp, "%c", *p++); | |
382 | else if (!*p) | |
383 | fprintf(ofp, "%c", '%'); | |
384 | else | |
385 | p = parse_field(act, pci, t, elapsed, | |
386 | pdu_len, pdu_buf, p); | |
387 | break; | |
388 | case '\\': { /* escape */ | |
389 | switch (p[1]) { | |
390 | case 'b': fprintf(ofp, "\b"); break; | |
391 | case 'n': fprintf(ofp, "\n"); break; | |
392 | case 'r': fprintf(ofp, "\r"); break; | |
393 | case 't': fprintf(ofp, "\t"); break; | |
394 | default: | |
395 | fprintf(stderr, | |
396 | "Invalid escape char in format %c\n", | |
397 | p[1]); | |
398 | exit(1); | |
399 | /*NOTREACHED*/ | |
400 | } | |
401 | p += 2; | |
402 | break; | |
403 | } | |
404 | default: | |
405 | fprintf(ofp, "%c", *p++); | |
406 | break; | |
407 | } | |
408 | } | |
409 | } | |
410 | ||
411 |