Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2009, Steven Rostedt <srostedt@redhat.com> |
| 3 | * |
| 4 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 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; version 2 of the License (not later!) |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | * |
| 19 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| 20 | */ |
Xiao Guangrong | f887f30 | 2010-02-04 16:46:42 +0800 | [diff] [blame] | 21 | #define _FILE_OFFSET_BITS 64 |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 22 | |
| 23 | #include <dirent.h> |
| 24 | #include <stdio.h> |
| 25 | #include <stdlib.h> |
| 26 | #include <string.h> |
| 27 | #include <getopt.h> |
| 28 | #include <stdarg.h> |
| 29 | #include <sys/types.h> |
| 30 | #include <sys/stat.h> |
| 31 | #include <sys/wait.h> |
| 32 | #include <sys/mman.h> |
| 33 | #include <pthread.h> |
| 34 | #include <fcntl.h> |
| 35 | #include <unistd.h> |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 36 | #include <errno.h> |
| 37 | |
Frederic Weisbecker | 1ef2ed1 | 2009-08-28 03:09:58 +0200 | [diff] [blame] | 38 | #include "../perf.h" |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 39 | #include "util.h" |
| 40 | #include "trace-event.h" |
| 41 | |
| 42 | static int input_fd; |
| 43 | |
| 44 | static int read_page; |
| 45 | |
| 46 | int file_bigendian; |
| 47 | int host_bigendian; |
| 48 | static int long_size; |
| 49 | |
Tom Zanussi | 9215545 | 2010-04-01 23:59:21 -0500 | [diff] [blame] | 50 | static ssize_t calc_data_size; |
Tom Zanussi | 454c407 | 2010-05-01 01:41:20 -0500 | [diff] [blame] | 51 | static bool repipe; |
Tom Zanussi | 9215545 | 2010-04-01 23:59:21 -0500 | [diff] [blame] | 52 | |
Steven Rostedt | aaf045f | 2012-04-06 00:47:56 +0200 | [diff] [blame] | 53 | static void *malloc_or_die(int size) |
| 54 | { |
| 55 | void *ret; |
| 56 | |
| 57 | ret = malloc(size); |
| 58 | if (!ret) |
| 59 | die("malloc"); |
| 60 | return ret; |
| 61 | } |
| 62 | |
Tom Zanussi | 9215545 | 2010-04-01 23:59:21 -0500 | [diff] [blame] | 63 | static int do_read(int fd, void *buf, int size) |
| 64 | { |
| 65 | int rsize = size; |
| 66 | |
| 67 | while (size) { |
| 68 | int ret = read(fd, buf, size); |
| 69 | |
| 70 | if (ret <= 0) |
| 71 | return -1; |
| 72 | |
Tom Zanussi | 454c407 | 2010-05-01 01:41:20 -0500 | [diff] [blame] | 73 | if (repipe) { |
| 74 | int retw = write(STDOUT_FILENO, buf, ret); |
| 75 | |
| 76 | if (retw <= 0 || retw != ret) |
| 77 | die("repiping input file"); |
| 78 | } |
| 79 | |
Tom Zanussi | 9215545 | 2010-04-01 23:59:21 -0500 | [diff] [blame] | 80 | size -= ret; |
| 81 | buf += ret; |
| 82 | } |
| 83 | |
| 84 | return rsize; |
| 85 | } |
| 86 | |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 87 | static int read_or_die(void *data, int size) |
| 88 | { |
| 89 | int r; |
| 90 | |
Tom Zanussi | 9215545 | 2010-04-01 23:59:21 -0500 | [diff] [blame] | 91 | r = do_read(input_fd, data, size); |
| 92 | if (r <= 0) |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 93 | die("reading input file (size expected=%d received=%d)", |
| 94 | size, r); |
Tom Zanussi | 9215545 | 2010-04-01 23:59:21 -0500 | [diff] [blame] | 95 | |
| 96 | if (calc_data_size) |
| 97 | calc_data_size += r; |
| 98 | |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 99 | return r; |
| 100 | } |
| 101 | |
Tom Zanussi | cbb5cf7 | 2010-05-04 23:02:10 -0500 | [diff] [blame] | 102 | /* If it fails, the next read will report it */ |
| 103 | static void skip(int size) |
| 104 | { |
| 105 | char buf[BUFSIZ]; |
| 106 | int r; |
| 107 | |
| 108 | while (size) { |
| 109 | r = size > BUFSIZ ? BUFSIZ : size; |
| 110 | read_or_die(buf, r); |
| 111 | size -= r; |
| 112 | }; |
| 113 | } |
| 114 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 115 | static unsigned int read4(struct pevent *pevent) |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 116 | { |
| 117 | unsigned int data; |
| 118 | |
| 119 | read_or_die(&data, 4); |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 120 | return __data2host4(pevent, data); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 121 | } |
| 122 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 123 | static unsigned long long read8(struct pevent *pevent) |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 124 | { |
| 125 | unsigned long long data; |
| 126 | |
| 127 | read_or_die(&data, 8); |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 128 | return __data2host8(pevent, data); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 129 | } |
| 130 | |
| 131 | static char *read_string(void) |
| 132 | { |
| 133 | char buf[BUFSIZ]; |
| 134 | char *str = NULL; |
| 135 | int size = 0; |
Xiao Guangrong | f887f30 | 2010-02-04 16:46:42 +0800 | [diff] [blame] | 136 | off_t r; |
Tom Zanussi | 9215545 | 2010-04-01 23:59:21 -0500 | [diff] [blame] | 137 | char c; |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 138 | |
| 139 | for (;;) { |
Tom Zanussi | 9215545 | 2010-04-01 23:59:21 -0500 | [diff] [blame] | 140 | r = read(input_fd, &c, 1); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 141 | if (r < 0) |
| 142 | die("reading input file"); |
| 143 | |
| 144 | if (!r) |
| 145 | die("no data"); |
| 146 | |
Tom Zanussi | 454c407 | 2010-05-01 01:41:20 -0500 | [diff] [blame] | 147 | if (repipe) { |
| 148 | int retw = write(STDOUT_FILENO, &c, 1); |
| 149 | |
| 150 | if (retw <= 0 || retw != r) |
| 151 | die("repiping input file string"); |
| 152 | } |
| 153 | |
Tom Zanussi | 9215545 | 2010-04-01 23:59:21 -0500 | [diff] [blame] | 154 | buf[size++] = c; |
| 155 | |
| 156 | if (!c) |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 157 | break; |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 158 | } |
| 159 | |
Tom Zanussi | 9215545 | 2010-04-01 23:59:21 -0500 | [diff] [blame] | 160 | if (calc_data_size) |
| 161 | calc_data_size += size; |
Ingo Molnar | 6f4596d | 2009-09-03 16:22:45 +0200 | [diff] [blame] | 162 | |
Tom Zanussi | 9215545 | 2010-04-01 23:59:21 -0500 | [diff] [blame] | 163 | str = malloc_or_die(size); |
| 164 | memcpy(str, buf, size); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 165 | |
| 166 | return str; |
| 167 | } |
| 168 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 169 | static void read_proc_kallsyms(struct pevent *pevent) |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 170 | { |
| 171 | unsigned int size; |
| 172 | char *buf; |
| 173 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 174 | size = read4(pevent); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 175 | if (!size) |
| 176 | return; |
| 177 | |
OGAWA Hirofumi | 7691b1e | 2009-12-06 20:10:49 +0900 | [diff] [blame] | 178 | buf = malloc_or_die(size + 1); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 179 | read_or_die(buf, size); |
OGAWA Hirofumi | 7691b1e | 2009-12-06 20:10:49 +0900 | [diff] [blame] | 180 | buf[size] = '\0'; |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 181 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 182 | parse_proc_kallsyms(pevent, buf, size); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 183 | |
| 184 | free(buf); |
| 185 | } |
| 186 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 187 | static void read_ftrace_printk(struct pevent *pevent) |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 188 | { |
| 189 | unsigned int size; |
| 190 | char *buf; |
| 191 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 192 | size = read4(pevent); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 193 | if (!size) |
| 194 | return; |
| 195 | |
| 196 | buf = malloc_or_die(size); |
| 197 | read_or_die(buf, size); |
| 198 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 199 | parse_ftrace_printk(pevent, buf, size); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 200 | |
| 201 | free(buf); |
| 202 | } |
| 203 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 204 | static void read_header_files(struct pevent *pevent) |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 205 | { |
| 206 | unsigned long long size; |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 207 | char *header_event; |
| 208 | char buf[BUFSIZ]; |
| 209 | |
| 210 | read_or_die(buf, 12); |
| 211 | |
| 212 | if (memcmp(buf, "header_page", 12) != 0) |
| 213 | die("did not read header page"); |
| 214 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 215 | size = read8(pevent); |
Frederic Weisbecker | d00a47c | 2010-05-01 03:08:46 +0200 | [diff] [blame] | 216 | skip(size); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 217 | |
| 218 | /* |
| 219 | * The size field in the page is of type long, |
| 220 | * use that instead, since it represents the kernel. |
| 221 | */ |
| 222 | long_size = header_page_size_size; |
| 223 | |
| 224 | read_or_die(buf, 13); |
| 225 | if (memcmp(buf, "header_event", 13) != 0) |
| 226 | die("did not read header event"); |
| 227 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 228 | size = read8(pevent); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 229 | header_event = malloc_or_die(size); |
| 230 | read_or_die(header_event, size); |
| 231 | free(header_event); |
| 232 | } |
| 233 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 234 | static void read_ftrace_file(struct pevent *pevent, unsigned long long size) |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 235 | { |
| 236 | char *buf; |
| 237 | |
| 238 | buf = malloc_or_die(size); |
| 239 | read_or_die(buf, size); |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 240 | parse_ftrace_file(pevent, buf, size); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 241 | free(buf); |
| 242 | } |
| 243 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 244 | static void read_event_file(struct pevent *pevent, char *sys, |
| 245 | unsigned long long size) |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 246 | { |
| 247 | char *buf; |
| 248 | |
| 249 | buf = malloc_or_die(size); |
| 250 | read_or_die(buf, size); |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 251 | parse_event_file(pevent, buf, size, sys); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 252 | free(buf); |
| 253 | } |
| 254 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 255 | static void read_ftrace_files(struct pevent *pevent) |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 256 | { |
| 257 | unsigned long long size; |
| 258 | int count; |
| 259 | int i; |
| 260 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 261 | count = read4(pevent); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 262 | |
| 263 | for (i = 0; i < count; i++) { |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 264 | size = read8(pevent); |
| 265 | read_ftrace_file(pevent, size); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 266 | } |
| 267 | } |
| 268 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 269 | static void read_event_files(struct pevent *pevent) |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 270 | { |
| 271 | unsigned long long size; |
| 272 | char *sys; |
| 273 | int systems; |
| 274 | int count; |
| 275 | int i,x; |
| 276 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 277 | systems = read4(pevent); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 278 | |
| 279 | for (i = 0; i < systems; i++) { |
| 280 | sys = read_string(); |
| 281 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 282 | count = read4(pevent); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 283 | for (x=0; x < count; x++) { |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 284 | size = read8(pevent); |
| 285 | read_event_file(pevent, sys, size); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 286 | } |
| 287 | } |
| 288 | } |
| 289 | |
| 290 | struct cpu_data { |
| 291 | unsigned long long offset; |
| 292 | unsigned long long size; |
| 293 | unsigned long long timestamp; |
Steven Rostedt | 1c69818 | 2012-04-06 00:48:06 +0200 | [diff] [blame] | 294 | struct pevent_record *next; |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 295 | char *page; |
| 296 | int cpu; |
| 297 | int index; |
| 298 | int page_size; |
| 299 | }; |
| 300 | |
| 301 | static struct cpu_data *cpu_data; |
| 302 | |
| 303 | static void update_cpu_data_index(int cpu) |
| 304 | { |
| 305 | cpu_data[cpu].offset += page_size; |
| 306 | cpu_data[cpu].size -= page_size; |
| 307 | cpu_data[cpu].index = 0; |
| 308 | } |
| 309 | |
| 310 | static void get_next_page(int cpu) |
| 311 | { |
Xiao Guangrong | f887f30 | 2010-02-04 16:46:42 +0800 | [diff] [blame] | 312 | off_t save_seek; |
| 313 | off_t ret; |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 314 | |
| 315 | if (!cpu_data[cpu].page) |
| 316 | return; |
| 317 | |
| 318 | if (read_page) { |
| 319 | if (cpu_data[cpu].size <= page_size) { |
| 320 | free(cpu_data[cpu].page); |
| 321 | cpu_data[cpu].page = NULL; |
| 322 | return; |
| 323 | } |
| 324 | |
| 325 | update_cpu_data_index(cpu); |
| 326 | |
| 327 | /* other parts of the code may expect the pointer to not move */ |
Xiao Guangrong | f887f30 | 2010-02-04 16:46:42 +0800 | [diff] [blame] | 328 | save_seek = lseek(input_fd, 0, SEEK_CUR); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 329 | |
Xiao Guangrong | f887f30 | 2010-02-04 16:46:42 +0800 | [diff] [blame] | 330 | ret = lseek(input_fd, cpu_data[cpu].offset, SEEK_SET); |
| 331 | if (ret == (off_t)-1) |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 332 | die("failed to lseek"); |
| 333 | ret = read(input_fd, cpu_data[cpu].page, page_size); |
| 334 | if (ret < 0) |
| 335 | die("failed to read page"); |
| 336 | |
| 337 | /* reset the file pointer back */ |
Xiao Guangrong | f887f30 | 2010-02-04 16:46:42 +0800 | [diff] [blame] | 338 | lseek(input_fd, save_seek, SEEK_SET); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 339 | |
| 340 | return; |
| 341 | } |
| 342 | |
| 343 | munmap(cpu_data[cpu].page, page_size); |
| 344 | cpu_data[cpu].page = NULL; |
| 345 | |
| 346 | if (cpu_data[cpu].size <= page_size) |
| 347 | return; |
| 348 | |
| 349 | update_cpu_data_index(cpu); |
| 350 | |
| 351 | cpu_data[cpu].page = mmap(NULL, page_size, PROT_READ, MAP_PRIVATE, |
| 352 | input_fd, cpu_data[cpu].offset); |
| 353 | if (cpu_data[cpu].page == MAP_FAILED) |
| 354 | die("failed to mmap cpu %d at offset 0x%llx", |
| 355 | cpu, cpu_data[cpu].offset); |
| 356 | } |
| 357 | |
| 358 | static unsigned int type_len4host(unsigned int type_len_ts) |
| 359 | { |
| 360 | if (file_bigendian) |
| 361 | return (type_len_ts >> 27) & ((1 << 5) - 1); |
| 362 | else |
| 363 | return type_len_ts & ((1 << 5) - 1); |
| 364 | } |
| 365 | |
| 366 | static unsigned int ts4host(unsigned int type_len_ts) |
| 367 | { |
| 368 | if (file_bigendian) |
| 369 | return type_len_ts & ((1 << 27) - 1); |
| 370 | else |
| 371 | return type_len_ts >> 5; |
| 372 | } |
| 373 | |
| 374 | static int calc_index(void *ptr, int cpu) |
| 375 | { |
| 376 | return (unsigned long)ptr - (unsigned long)cpu_data[cpu].page; |
| 377 | } |
| 378 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 379 | struct pevent_record *trace_peek_data(struct pevent *pevent, int cpu) |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 380 | { |
Steven Rostedt | 1c69818 | 2012-04-06 00:48:06 +0200 | [diff] [blame] | 381 | struct pevent_record *data; |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 382 | void *page = cpu_data[cpu].page; |
| 383 | int idx = cpu_data[cpu].index; |
| 384 | void *ptr = page + idx; |
| 385 | unsigned long long extend; |
| 386 | unsigned int type_len_ts; |
| 387 | unsigned int type_len; |
| 388 | unsigned int delta; |
| 389 | unsigned int length = 0; |
| 390 | |
| 391 | if (cpu_data[cpu].next) |
| 392 | return cpu_data[cpu].next; |
| 393 | |
| 394 | if (!page) |
| 395 | return NULL; |
| 396 | |
| 397 | if (!idx) { |
| 398 | /* FIXME: handle header page */ |
| 399 | if (header_page_ts_size != 8) |
| 400 | die("expected a long long type for timestamp"); |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 401 | cpu_data[cpu].timestamp = data2host8(pevent, ptr); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 402 | ptr += 8; |
| 403 | switch (header_page_size_size) { |
| 404 | case 4: |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 405 | cpu_data[cpu].page_size = data2host4(pevent, ptr); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 406 | ptr += 4; |
| 407 | break; |
| 408 | case 8: |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 409 | cpu_data[cpu].page_size = data2host8(pevent, ptr); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 410 | ptr += 8; |
| 411 | break; |
| 412 | default: |
| 413 | die("bad long size"); |
| 414 | } |
| 415 | ptr = cpu_data[cpu].page + header_page_data_offset; |
| 416 | } |
| 417 | |
| 418 | read_again: |
| 419 | idx = calc_index(ptr, cpu); |
| 420 | |
| 421 | if (idx >= cpu_data[cpu].page_size) { |
| 422 | get_next_page(cpu); |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 423 | return trace_peek_data(pevent, cpu); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 424 | } |
| 425 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 426 | type_len_ts = data2host4(pevent, ptr); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 427 | ptr += 4; |
| 428 | |
| 429 | type_len = type_len4host(type_len_ts); |
| 430 | delta = ts4host(type_len_ts); |
| 431 | |
| 432 | switch (type_len) { |
| 433 | case RINGBUF_TYPE_PADDING: |
| 434 | if (!delta) |
| 435 | die("error, hit unexpected end of page"); |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 436 | length = data2host4(pevent, ptr); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 437 | ptr += 4; |
| 438 | length *= 4; |
| 439 | ptr += length; |
| 440 | goto read_again; |
| 441 | |
| 442 | case RINGBUF_TYPE_TIME_EXTEND: |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 443 | extend = data2host4(pevent, ptr); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 444 | ptr += 4; |
| 445 | extend <<= TS_SHIFT; |
| 446 | extend += delta; |
| 447 | cpu_data[cpu].timestamp += extend; |
| 448 | goto read_again; |
| 449 | |
| 450 | case RINGBUF_TYPE_TIME_STAMP: |
| 451 | ptr += 12; |
| 452 | break; |
| 453 | case 0: |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 454 | length = data2host4(pevent, ptr); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 455 | ptr += 4; |
| 456 | die("here! length=%d", length); |
| 457 | break; |
| 458 | default: |
| 459 | length = type_len * 4; |
| 460 | break; |
| 461 | } |
| 462 | |
| 463 | cpu_data[cpu].timestamp += delta; |
| 464 | |
| 465 | data = malloc_or_die(sizeof(*data)); |
| 466 | memset(data, 0, sizeof(*data)); |
| 467 | |
| 468 | data->ts = cpu_data[cpu].timestamp; |
| 469 | data->size = length; |
| 470 | data->data = ptr; |
| 471 | ptr += length; |
| 472 | |
| 473 | cpu_data[cpu].index = calc_index(ptr, cpu); |
| 474 | cpu_data[cpu].next = data; |
| 475 | |
| 476 | return data; |
| 477 | } |
| 478 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 479 | struct pevent_record *trace_read_data(struct pevent *pevent, int cpu) |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 480 | { |
Steven Rostedt | 1c69818 | 2012-04-06 00:48:06 +0200 | [diff] [blame] | 481 | struct pevent_record *data; |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 482 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 483 | data = trace_peek_data(pevent, cpu); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 484 | cpu_data[cpu].next = NULL; |
| 485 | |
| 486 | return data; |
| 487 | } |
| 488 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 489 | ssize_t trace_report(int fd, struct pevent **ppevent, bool __repipe) |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 490 | { |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 491 | char buf[BUFSIZ]; |
| 492 | char test[] = { 23, 8, 68 }; |
| 493 | char *version; |
Ingo Molnar | d9340c1 | 2009-09-12 10:08:34 +0200 | [diff] [blame] | 494 | int show_version = 0; |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 495 | int show_funcs = 0; |
| 496 | int show_printk = 0; |
Tom Zanussi | 9215545 | 2010-04-01 23:59:21 -0500 | [diff] [blame] | 497 | ssize_t size; |
| 498 | |
| 499 | calc_data_size = 1; |
Tom Zanussi | 454c407 | 2010-05-01 01:41:20 -0500 | [diff] [blame] | 500 | repipe = __repipe; |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 501 | |
Frederic Weisbecker | 03456a1 | 2009-10-06 23:36:47 +0200 | [diff] [blame] | 502 | input_fd = fd; |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 503 | |
| 504 | read_or_die(buf, 3); |
| 505 | if (memcmp(buf, test, 3) != 0) |
Arnaldo Carvalho de Melo | e256136 | 2009-11-21 14:31:26 -0200 | [diff] [blame] | 506 | die("no trace data in the file"); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 507 | |
| 508 | read_or_die(buf, 7); |
| 509 | if (memcmp(buf, "tracing", 7) != 0) |
Arnaldo Carvalho de Melo | e256136 | 2009-11-21 14:31:26 -0200 | [diff] [blame] | 510 | die("not a trace file (missing 'tracing' tag)"); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 511 | |
| 512 | version = read_string(); |
Ingo Molnar | d9340c1 | 2009-09-12 10:08:34 +0200 | [diff] [blame] | 513 | if (show_version) |
| 514 | printf("version = %s\n", version); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 515 | free(version); |
| 516 | |
| 517 | read_or_die(buf, 1); |
| 518 | file_bigendian = buf[0]; |
| 519 | host_bigendian = bigendian(); |
| 520 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 521 | *ppevent = read_trace_init(file_bigendian, host_bigendian); |
| 522 | if (*ppevent == NULL) |
| 523 | die("read_trace_init failed"); |
Steven Rostedt | aaf045f | 2012-04-06 00:47:56 +0200 | [diff] [blame] | 524 | |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 525 | read_or_die(buf, 1); |
| 526 | long_size = buf[0]; |
| 527 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 528 | page_size = read4(*ppevent); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 529 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 530 | read_header_files(*ppevent); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 531 | |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 532 | read_ftrace_files(*ppevent); |
| 533 | read_event_files(*ppevent); |
| 534 | read_proc_kallsyms(*ppevent); |
| 535 | read_ftrace_printk(*ppevent); |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 536 | |
Tom Zanussi | 9215545 | 2010-04-01 23:59:21 -0500 | [diff] [blame] | 537 | size = calc_data_size - 1; |
| 538 | calc_data_size = 0; |
Tom Zanussi | 454c407 | 2010-05-01 01:41:20 -0500 | [diff] [blame] | 539 | repipe = false; |
Tom Zanussi | 9215545 | 2010-04-01 23:59:21 -0500 | [diff] [blame] | 540 | |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 541 | if (show_funcs) { |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 542 | pevent_print_funcs(*ppevent); |
Tom Zanussi | 9215545 | 2010-04-01 23:59:21 -0500 | [diff] [blame] | 543 | return size; |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 544 | } |
| 545 | if (show_printk) { |
Arnaldo Carvalho de Melo | da37896 | 2012-06-27 13:08:42 -0300 | [diff] [blame] | 546 | pevent_print_printk(*ppevent); |
Tom Zanussi | 9215545 | 2010-04-01 23:59:21 -0500 | [diff] [blame] | 547 | return size; |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 548 | } |
| 549 | |
Tom Zanussi | 9215545 | 2010-04-01 23:59:21 -0500 | [diff] [blame] | 550 | return size; |
Steven Rostedt | 538bafb | 2009-08-17 16:18:06 +0200 | [diff] [blame] | 551 | } |