Commit | Line | Data |
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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 | ||
13 | #define VALID_SPECS "BCDFGMPQRSTU" | |
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); | |
66 | int b = t->action & BLK_TC_ACT(BLK_TC_BARRIER); | |
67 | int s = t->action & BLK_TC_ACT(BLK_TC_SYNC); | |
68 | int i = 0; | |
69 | ||
70 | if (w) | |
71 | rwbs[i++] = 'W'; | |
72 | else | |
73 | rwbs[i++] = 'R'; | |
74 | if (b) | |
75 | rwbs[i++] = 'B'; | |
76 | if (s) | |
77 | rwbs[i++] = 'S'; | |
78 | ||
79 | rwbs[i] = '\0'; | |
80 | } | |
81 | ||
82 | static char *dump_pdu(unsigned char *pdu_buf, int pdu_len) | |
83 | { | |
84 | static char p[4096]; | |
85 | int i, len; | |
86 | ||
87 | if (!pdu_buf || !pdu_len) | |
88 | return NULL; | |
89 | ||
90 | for (len = 0, i = 0; i < pdu_len; i++) { | |
91 | if (i) | |
92 | len += sprintf(p + len, " "); | |
93 | ||
94 | len += sprintf(p + len, "%02x", pdu_buf[i]); | |
95 | } | |
96 | ||
97 | return p; | |
98 | } | |
99 | ||
100 | static unsigned int get_pdu_int(struct blk_io_trace *t) | |
101 | { | |
102 | __u64 *val = (__u64 *) ((char *) t + sizeof(*t)); | |
103 | ||
104 | return be64_to_cpu(*val); | |
105 | } | |
106 | ||
71d5d4c9 JA |
107 | static void print_field(char *act, struct per_cpu_info *pci, |
108 | struct blk_io_trace *t, unsigned long long elapsed, | |
109 | int pdu_len, unsigned char *pdu_buf, char field, | |
110 | int minus, int has_w, int width) | |
111 | { | |
112 | char format[64]; | |
113 | ||
114 | if (has_w) { | |
115 | if (minus) | |
116 | sprintf(format, "%%-%d", width); | |
117 | else | |
118 | sprintf(format, "%%%d", width); | |
119 | } else | |
120 | sprintf(format, "%%"); | |
121 | ||
122 | switch (field) { | |
123 | case 'a': | |
124 | fprintf(ofp, strcat(format, "s"), act); | |
125 | break; | |
126 | case 'c': | |
127 | fprintf(ofp, strcat(format, "d"), pci->cpu); | |
128 | break; | |
129 | case 'C': | |
130 | fprintf(ofp, strcat(format, "s"), t->comm); | |
131 | break; | |
132 | case 'd': { | |
133 | char rwbs[4]; | |
768277cc JA |
134 | |
135 | fill_rwbs(rwbs, t); | |
71d5d4c9 JA |
136 | fprintf(ofp, strcat(format, "s"), rwbs); |
137 | break; | |
138 | } | |
139 | case 'D': /* format width ignored */ | |
140 | fprintf(ofp,"%3d,%-3d", MAJOR(t->device), MINOR(t->device)); | |
141 | break; | |
142 | case 'e': | |
143 | fprintf(ofp, strcat(format, "d"), t->error); | |
144 | break; | |
145 | case 'M': | |
146 | fprintf(ofp, strcat(format, "d"), MAJOR(t->device)); | |
147 | break; | |
148 | case 'm': | |
149 | fprintf(ofp, strcat(format, "d"), MINOR(t->device)); | |
150 | break; | |
151 | case 'n': | |
152 | fprintf(ofp, strcat(format, "u"), t->bytes >> 9); | |
153 | break; | |
1c8ca7b5 JA |
154 | case 'N': |
155 | fprintf(ofp, strcat(format, "u"), t->bytes); | |
156 | break; | |
71d5d4c9 JA |
157 | case 'p': |
158 | fprintf(ofp, strcat(format, "u"), t->pid); | |
159 | break; | |
768277cc JA |
160 | case 'P': { /* format width ignored */ |
161 | char *p = dump_pdu(pdu_buf, pdu_len); | |
162 | if (p) | |
163 | fprintf(ofp, "%s", p); | |
71d5d4c9 | 164 | break; |
768277cc | 165 | } |
71d5d4c9 JA |
166 | case 's': |
167 | fprintf(ofp, strcat(format, "ld"), t->sequence); | |
168 | break; | |
169 | case 'S': | |
170 | fprintf(ofp, strcat(format, "lu"), t->sector); | |
171 | break; | |
172 | case 't': | |
173 | sprintf(format, "%%0%dlu", has_w ? width : 9); | |
174 | fprintf(ofp, format, NANO_SECONDS(t->time)); | |
175 | break; | |
176 | case 'T': | |
177 | fprintf(ofp, strcat(format, "d"), SECONDS(t->time)); | |
178 | break; | |
179 | case 'u': | |
180 | if (elapsed == -1ULL) { | |
181 | fprintf(stderr, "Expecting elapsed value\n"); | |
182 | exit(1); | |
183 | } | |
184 | fprintf(ofp, strcat(format, "llu"), elapsed / 1000); | |
185 | break; | |
186 | case 'U': { | |
768277cc | 187 | fprintf(ofp, strcat(format, "u"), get_pdu_int(t)); |
71d5d4c9 JA |
188 | break; |
189 | } | |
190 | default: | |
191 | fprintf(ofp,strcat(format, "c"), field); | |
192 | break; | |
193 | } | |
194 | } | |
195 | ||
768277cc JA |
196 | static char *parse_field(char *act, struct per_cpu_info *pci, |
197 | struct blk_io_trace *t, unsigned long long elapsed, | |
198 | int pdu_len, unsigned char *pdu_buf, | |
71d5d4c9 JA |
199 | char *master_format) |
200 | { | |
201 | int minus = 0; | |
202 | int has_w = 0; | |
203 | int width = 0; | |
204 | char *p = master_format; | |
205 | ||
206 | if (*p == '-') { | |
207 | minus = 1; | |
208 | p++; | |
209 | } | |
210 | if (isdigit(*p)) { | |
211 | has_w = 1; | |
212 | do { | |
213 | width = (width * 10) + (*p++ - '0'); | |
214 | } while ((*p) && (isdigit(*p))); | |
215 | } | |
216 | if (*p) { | |
217 | print_field(act, pci, t, elapsed, pdu_len, pdu_buf, *p++, | |
218 | minus, has_w, width); | |
219 | } | |
220 | return p; | |
221 | } | |
222 | ||
768277cc JA |
223 | static void process_default(char *act, struct per_cpu_info *pci, |
224 | struct blk_io_trace *t, unsigned long long elapsed, | |
225 | int pdu_len, unsigned char *pdu_buf) | |
71d5d4c9 | 226 | { |
768277cc | 227 | char rwbs[4]; |
71d5d4c9 | 228 | |
768277cc JA |
229 | fill_rwbs(rwbs, t); |
230 | ||
231 | /* | |
232 | * The header is always the same | |
233 | */ | |
234 | fprintf(ofp, "%3d,%-3d %2d %8d %5d.%09lu %5u %2s %3s ", | |
235 | MAJOR(t->device), MINOR(t->device), pci->cpu, t->sequence, | |
236 | (int) SECONDS(t->time), (unsigned long) NANO_SECONDS(t->time), | |
237 | t->pid, act, rwbs); | |
71d5d4c9 | 238 | |
768277cc | 239 | switch (act[0]) { |
71d5d4c9 | 240 | case 'C': /* Complete */ |
768277cc JA |
241 | if (t->action & BLK_TC_ACT(BLK_TC_PC)) { |
242 | char *p = dump_pdu(pdu_buf, pdu_len); | |
243 | if (p) | |
244 | fprintf(ofp, "(%s) ", p); | |
245 | fprintf(ofp, "[%d]\n", t->error); | |
246 | } else { | |
71d5d4c9 | 247 | if (elapsed != -1ULL) { |
768277cc JA |
248 | fprintf(ofp, "%llu + %u (%8llu) [%d]\n", |
249 | (unsigned long long) t->sector, | |
250 | t->bytes >> 9, elapsed, t->error); | |
251 | } else { | |
252 | fprintf(ofp, "%llu + %u [%d]\n", | |
253 | (unsigned long long) t->sector, | |
254 | t->bytes >> 9, t->error); | |
255 | } | |
71d5d4c9 | 256 | } |
71d5d4c9 JA |
257 | break; |
258 | ||
259 | case 'D': /* Issue */ | |
71d5d4c9 | 260 | case 'I': /* Insert */ |
71d5d4c9 JA |
261 | case 'Q': /* Queue */ |
262 | case 'W': /* Bounce */ | |
768277cc JA |
263 | if (t->action & BLK_TC_ACT(BLK_TC_PC)) { |
264 | char *p; | |
1c8ca7b5 | 265 | fprintf(ofp, "%u ", t->bytes); |
768277cc JA |
266 | p = dump_pdu(pdu_buf, pdu_len); |
267 | if (p) | |
268 | fprintf(ofp, "(%s) ", p); | |
269 | fprintf(ofp, "[%s]\n", t->comm); | |
270 | } else { | |
271 | if (elapsed != -1ULL) { | |
272 | fprintf(ofp, "%llu + %u (%8llu) [%s]\n", | |
273 | (unsigned long long) t->sector, | |
274 | t->bytes >> 9, elapsed, t->comm); | |
275 | } else { | |
276 | fprintf(ofp, "%llu + %u [%s]\n", | |
277 | (unsigned long long) t->sector, | |
278 | t->bytes >> 9, t->comm); | |
279 | } | |
280 | } | |
71d5d4c9 JA |
281 | break; |
282 | ||
283 | case 'B': /* Back merge */ | |
284 | case 'F': /* Front merge */ | |
285 | case 'M': /* Front or back merge */ | |
768277cc JA |
286 | case 'G': /* Get request */ |
287 | case 'S': /* Sleep request */ | |
288 | fprintf(ofp, "%llu + %u [%s]\n", (unsigned long long) t->sector, | |
289 | t->bytes >> 9, t->comm); | |
71d5d4c9 JA |
290 | break; |
291 | ||
292 | case 'P': /* Plug */ | |
768277cc | 293 | fprintf(ofp, "[%s]\n", t->comm); |
71d5d4c9 JA |
294 | break; |
295 | ||
296 | case 'U': /* Unplug IO */ | |
768277cc JA |
297 | case 'T': { /* Unplug timer */ |
298 | fprintf(ofp, "[%s] %u\n", t->comm, get_pdu_int(t)); | |
71d5d4c9 | 299 | break; |
768277cc | 300 | } |
71d5d4c9 JA |
301 | |
302 | case 'X': /* Split */ | |
768277cc JA |
303 | fprintf(ofp, "%llu / %u [%s]\n", (unsigned long long) t->sector, |
304 | get_pdu_int(t), t->comm); | |
71d5d4c9 JA |
305 | break; |
306 | ||
307 | default: | |
768277cc JA |
308 | fprintf(stderr, "Unknown action %c\n", act[0]); |
309 | break; | |
71d5d4c9 JA |
310 | } |
311 | ||
71d5d4c9 JA |
312 | } |
313 | ||
314 | void process_fmt(char *act, struct per_cpu_info *pci, struct blk_io_trace *t, | |
315 | unsigned long long elapsed, int pdu_len, | |
316 | unsigned char *pdu_buf) | |
317 | { | |
768277cc JA |
318 | char *p = override_format[(int) *act]; |
319 | ||
320 | if (!p) { | |
321 | process_default(act, pci, t, elapsed, pdu_len, pdu_buf); | |
322 | return; | |
323 | } | |
71d5d4c9 JA |
324 | |
325 | while (*p) { | |
326 | switch (*p) { | |
327 | case '%': /* Field specifier */ | |
328 | p++; | |
329 | if (*p == '%') | |
330 | fprintf(ofp, "%c", *p++); | |
331 | else if (!*p) | |
332 | fprintf(ofp, "%c", '%'); | |
333 | else | |
334 | p = parse_field(act, pci, t, elapsed, | |
335 | pdu_len, pdu_buf, p); | |
336 | break; | |
337 | case '\\': { /* escape */ | |
338 | switch (p[1]) { | |
339 | case 'b': fprintf(ofp, "\b"); break; | |
340 | case 'n': fprintf(ofp, "\n"); break; | |
341 | case 'r': fprintf(ofp, "\r"); break; | |
342 | case 't': fprintf(ofp, "\t"); break; | |
343 | default: | |
344 | fprintf(stderr, | |
345 | "Invalid escape char in format %c\n", | |
346 | p[1]); | |
347 | exit(1); | |
348 | /*NOTREACHED*/ | |
349 | } | |
350 | p += 2; | |
351 | break; | |
352 | } | |
353 | default: | |
354 | fprintf(ofp, "%c", *p++); | |
355 | break; | |
356 | } | |
357 | } | |
358 | } | |
359 | ||
360 |