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f17c879d AB |
1 | /* |
2 | * block queue tracing application | |
3 | * | |
4 | * Copyright (C) 2006 Alan D. Brunelle <Alan.Brunelle@hp.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | */ | |
21 | #include <stdio.h> | |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
24 | #include <errno.h> | |
25 | #include <sys/types.h> | |
26 | #include <sys/stat.h> | |
27 | #include <unistd.h> | |
28 | ||
29 | #include "blktrace.h" | |
30 | ||
31 | struct trace_info { | |
32 | int bit_field; | |
33 | char *string; | |
34 | }; | |
35 | ||
36 | #define TRACE_TO_STRING(f) {.bit_field = f, .string = #f} | |
37 | static struct trace_info traces[] = { | |
38 | TRACE_TO_STRING( BLK_TC_READ ), | |
39 | TRACE_TO_STRING( BLK_TC_WRITE ), | |
40 | TRACE_TO_STRING( BLK_TC_BARRIER ), | |
41 | TRACE_TO_STRING( BLK_TC_SYNC ), | |
42 | TRACE_TO_STRING( BLK_TC_QUEUE ), | |
43 | TRACE_TO_STRING( BLK_TC_REQUEUE ), | |
44 | TRACE_TO_STRING( BLK_TC_ISSUE ), | |
45 | TRACE_TO_STRING( BLK_TC_COMPLETE ), | |
46 | TRACE_TO_STRING( BLK_TC_FS ), | |
47 | TRACE_TO_STRING( BLK_TC_PC ) | |
48 | }; | |
49 | #define N_TRACES (sizeof(traces) / sizeof(struct trace_info)) | |
50 | ||
51 | struct act_info { | |
52 | __u32 val; | |
53 | char *string; | |
54 | }; | |
55 | ||
56 | #define ACT_TO_STRING(f) {.val = f, .string = #f} | |
57 | static struct act_info acts[] = { | |
58 | ACT_TO_STRING( __BLK_TA_QUEUE ), | |
59 | ACT_TO_STRING( __BLK_TA_QUEUE ), | |
60 | ACT_TO_STRING( __BLK_TA_BACKMERGE ), | |
61 | ACT_TO_STRING( __BLK_TA_FRONTMERGE ), | |
62 | ACT_TO_STRING( __BLK_TA_GETRQ ), | |
63 | ACT_TO_STRING( __BLK_TA_SLEEPRQ ), | |
64 | ACT_TO_STRING( __BLK_TA_REQUEUE ), | |
65 | ACT_TO_STRING( __BLK_TA_ISSUE ), | |
66 | ACT_TO_STRING( __BLK_TA_COMPLETE ), | |
67 | ACT_TO_STRING( __BLK_TA_PLUG ), | |
68 | ACT_TO_STRING( __BLK_TA_UNPLUG_IO ), | |
69 | ACT_TO_STRING( __BLK_TA_UNPLUG_TIMER ), | |
70 | ACT_TO_STRING( __BLK_TA_INSERT ), | |
71 | ACT_TO_STRING( __BLK_TA_SPLIT ), | |
72 | ACT_TO_STRING( __BLK_TA_BOUNCE ), | |
73 | ACT_TO_STRING( __BLK_TA_REMAP ) | |
74 | }; | |
75 | #define N_ACTS (sizeof(acts) / sizeof(struct act_info)) | |
76 | ||
77 | static char *act_to_str(__u32 action) | |
78 | { | |
79 | static char buf[1024]; | |
5be4bdaf JA |
80 | unsigned int i; |
81 | unsigned int act = action & 0xffff; | |
82 | unsigned int trace = (action >> BLK_TC_SHIFT) & 0xffff; | |
f17c879d AB |
83 | |
84 | if (act <= N_ACTS) { | |
85 | sprintf(buf, "%s ", acts[act].string); | |
86 | for (i = 0; i < N_TRACES; i++) | |
87 | if (trace & (1 << i)) { | |
88 | char buf2[1024]; | |
89 | sprintf(buf2, "| %s ", traces[i].string); | |
90 | strcat(buf, buf2); | |
91 | } | |
92 | } | |
93 | else | |
94 | sprintf(buf, "Invalid action=%08x", action); | |
95 | ||
96 | return buf; | |
97 | } | |
98 | ||
99 | static void dump_trace(FILE *ofp, char *prefix, struct blk_io_trace *bit) | |
100 | { | |
101 | fprintf(ofp, " Dump %s\n", prefix); | |
102 | fprintf(ofp, " %8s: %08x\n", "magic", bit->magic); | |
103 | fprintf(ofp, " %8s: %u\n", "sequence", bit->sequence); | |
c0cb7fab JA |
104 | fprintf(ofp, " %8s: %llu\n", "time", (unsigned long long) bit->time); |
105 | fprintf(ofp, " %8s: %llu\n", "sector", (unsigned long long) bit->sector); | |
f17c879d AB |
106 | fprintf(ofp, " %8s: %u\n", "bytes", bit->bytes); |
107 | fprintf(ofp, " %8s: %s\n", "action", act_to_str(bit->action)); | |
108 | fprintf(ofp, " %8s: %u\n", "bytes", bit->bytes); | |
109 | fprintf(ofp, " %8s: %u\n", "cpu", bit->cpu); | |
110 | fprintf(ofp, " %8s: %u\n", "error", bit->error); | |
111 | fprintf(ofp, " %8s: %u\n", "pdu_len", bit->pdu_len); | |
112 | fprintf(ofp, " %8s: (%u,%u)\n\n", "device", MAJOR(bit->device), | |
113 | MINOR(bit->device)); | |
114 | } | |
115 | ||
5be4bdaf | 116 | static int process(FILE *ofp, char *file, unsigned int cpu) |
f17c879d AB |
117 | { |
118 | # define SWAP_BITS() do { \ | |
119 | if (bit_save) { \ | |
120 | struct blk_io_trace *tmp = bit_save; \ | |
121 | bit_save = bit; \ | |
122 | bit = tmp; \ | |
123 | } \ | |
124 | else { \ | |
125 | bit_save = bit; \ | |
126 | bit = malloc(sizeof(struct blk_io_trace)); \ | |
127 | } \ | |
128 | } while (0) | |
129 | ||
130 | # define INC_BAD(str) do { \ | |
131 | nbad++; \ | |
132 | fprintf(ofp, " ----------------\n"); \ | |
133 | if (bit_save) dump_trace(ofp,"seq-1",bit_save); \ | |
134 | dump_trace(ofp, str, bit); \ | |
135 | SWAP_BITS(); \ | |
136 | } while (0) | |
137 | ||
138 | size_t n; | |
139 | FILE *ifp; | |
140 | __u32 save_device = 0, save_sequence = 0; | |
141 | __u64 save_time = 0; | |
142 | struct blk_io_trace *bit_save = NULL; | |
143 | struct blk_io_trace *bit = malloc(sizeof(struct blk_io_trace)); | |
144 | unsigned int ngood = 0; | |
145 | unsigned int nbad = 0; | |
146 | unsigned int nbad_trace = 0, nbad_pdu = 0, nbad_cpu = 0; | |
147 | unsigned int nbad_seq = 0, nbad_dev = 0, nbad_time = 0; | |
148 | ||
149 | ifp = fopen(file, "r"); | |
150 | while ((n = fread(bit, sizeof(struct blk_io_trace), 1, ifp)) == 1) { | |
151 | trace_to_cpu(bit); | |
152 | if (verify_trace(bit)) { | |
153 | INC_BAD("bad trace"); | |
154 | continue; | |
155 | } | |
156 | ||
157 | if (bit->pdu_len) { | |
158 | char *pdu_buf; | |
159 | ||
160 | pdu_buf = malloc(bit->pdu_len); | |
161 | n = fread(pdu_buf, bit->pdu_len, 1, ifp); | |
5be4bdaf | 162 | if (n == 0) { |
f17c879d AB |
163 | INC_BAD("bad pdu"); |
164 | nbad_seq++; | |
165 | break; | |
166 | } | |
167 | free(pdu_buf); | |
168 | } | |
169 | ||
170 | if (bit->cpu != cpu) { | |
171 | INC_BAD("bad cpu"); | |
172 | nbad_cpu++; | |
173 | continue; | |
174 | } | |
175 | ||
176 | if (ngood) { | |
177 | if (bit->sequence <= save_sequence) { | |
178 | INC_BAD("bad seq"); | |
179 | nbad_seq++; | |
180 | continue; | |
181 | } | |
182 | else if (bit->time <= save_time) { | |
183 | INC_BAD("time regression"); | |
184 | nbad_time++; | |
185 | continue; | |
186 | } | |
187 | else if (bit->device != save_device) { | |
188 | INC_BAD("bad dev"); | |
189 | nbad_dev++; | |
190 | continue; | |
191 | } | |
192 | } | |
193 | ||
194 | save_sequence = bit->sequence; | |
195 | save_time = bit->time; | |
196 | save_device = bit->device; | |
197 | ||
198 | ngood++; | |
199 | SWAP_BITS(); | |
200 | } | |
201 | ||
05e2c559 | 202 | if (n == 0 && !feof(ifp)) |
f17c879d AB |
203 | fprintf(stderr,"%s: fread failed %d/%s\n", |
204 | file, errno, strerror(errno)); | |
205 | fclose(ifp); | |
206 | ||
207 | fprintf(ofp, " ---------------------\n"); | |
208 | fprintf(ofp, " Summary for cpu %d:\n", cpu); | |
209 | fprintf(ofp, " %10d valid + %10d invalid (%5.1f%%) processed\n\n", | |
210 | ngood, nbad, | |
211 | ngood ? 100.0 * (float)ngood / (float)(ngood + nbad) : 0.0); | |
212 | ||
213 | if (nbad) { | |
214 | if (nbad_trace) | |
215 | fprintf(ofp, "%8s %d traces\n", "", nbad_trace); | |
216 | if (nbad_trace) | |
217 | fprintf(ofp, "%8s %d pdu\n", "", nbad_pdu); | |
218 | if (nbad_cpu) | |
219 | fprintf(ofp, "%8s %d cpu\n", "", nbad_cpu); | |
220 | if (nbad_seq) | |
221 | fprintf(ofp, "%8s %d seq\n", "", nbad_seq); | |
222 | if (nbad_dev) | |
223 | fprintf(ofp, "%8s %d dev\n", "", nbad_dev); | |
224 | if (nbad_time) | |
225 | fprintf(ofp, "%8s %d time\n", "", nbad_time); | |
226 | fprintf(ofp,"\n"); | |
227 | } | |
228 | ||
229 | return nbad; | |
230 | } | |
231 | ||
232 | int main(int argc, char *argv[]) | |
233 | { | |
234 | char *devname; | |
235 | struct stat st; | |
236 | int i, cpu, nbad; | |
237 | FILE *ofp; | |
238 | char *ofname = malloc(1024); | |
239 | char *fname = malloc(1024); | |
240 | ||
241 | if (argc < 2) { | |
242 | fprintf(stderr,"FATAL: Need device name(s)\n"); | |
243 | fprintf(stderr,"Usage: blkrawverify <dev> [<dev>...]\n"); | |
244 | exit(1); | |
245 | } | |
246 | ||
247 | for (i = 1; i < argc; i++) { | |
248 | devname = argv[i]; | |
249 | sprintf(ofname, "%s.verify.out", devname); | |
250 | ofp = fopen(ofname, "w"); | |
251 | if (ofp == NULL) { | |
252 | fprintf(stderr,"Failed to open %s (%s), skipping %s\n", | |
253 | ofname, strerror(errno), devname); | |
254 | continue; | |
255 | } | |
256 | ||
257 | fprintf(ofp, "\n---------------\n" ); | |
258 | fprintf(ofp, "Verifying %s\n", devname); | |
259 | printf("Verifying %s\n", devname); fflush(stdout); | |
260 | for (cpu = 0; ; cpu++) { | |
261 | sprintf(fname, "%s.blktrace.%d", devname, cpu); | |
262 | if (stat(fname, &st) < 0) | |
263 | break; | |
264 | printf(" CPU %d ", cpu); fflush(stdout); | |
265 | nbad = process(ofp, fname, cpu); | |
266 | if (nbad) | |
267 | printf("-- %d bad", nbad); | |
268 | printf("\n"); | |
269 | } | |
270 | fclose(ofp); | |
271 | } | |
272 | ||
273 | return 0; | |
274 | } |