Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 1 | /* |
| 2 | * probe-event.c : perf-probe definition to kprobe_events format converter |
| 3 | * |
| 4 | * Written by Masami Hiramatsu <mhiramat@redhat.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 | |
| 22 | #define _GNU_SOURCE |
| 23 | #include <sys/utsname.h> |
| 24 | #include <sys/types.h> |
| 25 | #include <sys/stat.h> |
| 26 | #include <fcntl.h> |
| 27 | #include <errno.h> |
| 28 | #include <stdio.h> |
| 29 | #include <unistd.h> |
| 30 | #include <stdlib.h> |
| 31 | #include <string.h> |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 32 | #include <stdarg.h> |
| 33 | #include <limits.h> |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 34 | |
| 35 | #undef _GNU_SOURCE |
| 36 | #include "event.h" |
Masami Hiramatsu | e1c01d6 | 2009-11-30 19:20:05 -0500 | [diff] [blame] | 37 | #include "string.h" |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 38 | #include "strlist.h" |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 39 | #include "debug.h" |
Masami Hiramatsu | 7204133 | 2010-01-05 17:47:10 -0500 | [diff] [blame] | 40 | #include "cache.h" |
Masami Hiramatsu | 631c9de | 2010-01-06 09:45:34 -0500 | [diff] [blame] | 41 | #include "color.h" |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 42 | #include "parse-events.h" /* For debugfs_path */ |
| 43 | #include "probe-event.h" |
| 44 | |
| 45 | #define MAX_CMDLEN 256 |
| 46 | #define MAX_PROBE_ARGS 128 |
| 47 | #define PERFPROBE_GROUP "probe" |
| 48 | |
| 49 | #define semantic_error(msg ...) die("Semantic error :" msg) |
| 50 | |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 51 | /* If there is no space to write, returns -E2BIG. */ |
| 52 | static int e_snprintf(char *str, size_t size, const char *format, ...) |
Masami Hiramatsu | 8498845 | 2009-12-07 12:00:53 -0500 | [diff] [blame] | 53 | __attribute__((format(printf, 3, 4))); |
| 54 | |
| 55 | static int e_snprintf(char *str, size_t size, const char *format, ...) |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 56 | { |
| 57 | int ret; |
| 58 | va_list ap; |
| 59 | va_start(ap, format); |
| 60 | ret = vsnprintf(str, size, format, ap); |
| 61 | va_end(ap); |
| 62 | if (ret >= (int)size) |
| 63 | ret = -E2BIG; |
| 64 | return ret; |
| 65 | } |
| 66 | |
Masami Hiramatsu | 631c9de | 2010-01-06 09:45:34 -0500 | [diff] [blame] | 67 | void parse_line_range_desc(const char *arg, struct line_range *lr) |
| 68 | { |
| 69 | const char *ptr; |
| 70 | char *tmp; |
| 71 | /* |
| 72 | * <Syntax> |
| 73 | * SRC:SLN[+NUM|-ELN] |
| 74 | * FUNC[:SLN[+NUM|-ELN]] |
| 75 | */ |
| 76 | ptr = strchr(arg, ':'); |
| 77 | if (ptr) { |
| 78 | lr->start = (unsigned int)strtoul(ptr + 1, &tmp, 0); |
| 79 | if (*tmp == '+') |
| 80 | lr->end = lr->start + (unsigned int)strtoul(tmp + 1, |
| 81 | &tmp, 0); |
| 82 | else if (*tmp == '-') |
| 83 | lr->end = (unsigned int)strtoul(tmp + 1, &tmp, 0); |
| 84 | else |
| 85 | lr->end = 0; |
| 86 | pr_debug("Line range is %u to %u\n", lr->start, lr->end); |
| 87 | if (lr->end && lr->start > lr->end) |
| 88 | semantic_error("Start line must be smaller" |
| 89 | " than end line."); |
| 90 | if (*tmp != '\0') |
| 91 | semantic_error("Tailing with invalid character '%d'.", |
| 92 | *tmp); |
| 93 | tmp = strndup(arg, (ptr - arg)); |
| 94 | } else |
| 95 | tmp = strdup(arg); |
| 96 | |
| 97 | if (strchr(tmp, '.')) |
| 98 | lr->file = tmp; |
| 99 | else |
| 100 | lr->function = tmp; |
| 101 | } |
| 102 | |
Masami Hiramatsu | b7702a2 | 2009-12-16 17:24:15 -0500 | [diff] [blame] | 103 | /* Check the name is good for event/group */ |
| 104 | static bool check_event_name(const char *name) |
| 105 | { |
| 106 | if (!isalpha(*name) && *name != '_') |
| 107 | return false; |
| 108 | while (*++name != '\0') { |
| 109 | if (!isalpha(*name) && !isdigit(*name) && *name != '_') |
| 110 | return false; |
| 111 | } |
| 112 | return true; |
| 113 | } |
| 114 | |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 115 | /* Parse probepoint definition. */ |
| 116 | static void parse_perf_probe_probepoint(char *arg, struct probe_point *pp) |
| 117 | { |
| 118 | char *ptr, *tmp; |
| 119 | char c, nc = 0; |
| 120 | /* |
| 121 | * <Syntax> |
Masami Hiramatsu | 2a9c8c3 | 2010-02-25 08:36:12 -0500 | [diff] [blame^] | 122 | * perf probe [EVENT=]SRC[:LN|;PTN] |
| 123 | * perf probe [EVENT=]FUNC[@SRC][+OFFS|%return|:LN|;PAT] |
Masami Hiramatsu | af663d7 | 2009-12-15 10:32:18 -0500 | [diff] [blame] | 124 | * |
| 125 | * TODO:Group name support |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 126 | */ |
| 127 | |
Masami Hiramatsu | 2a9c8c3 | 2010-02-25 08:36:12 -0500 | [diff] [blame^] | 128 | ptr = strpbrk(arg, ";=@+%"); |
| 129 | if (ptr && *ptr == '=') { /* Event name */ |
Masami Hiramatsu | af663d7 | 2009-12-15 10:32:18 -0500 | [diff] [blame] | 130 | *ptr = '\0'; |
| 131 | tmp = ptr + 1; |
| 132 | ptr = strchr(arg, ':'); |
| 133 | if (ptr) /* Group name is not supported yet. */ |
| 134 | semantic_error("Group name is not supported yet."); |
Masami Hiramatsu | b7702a2 | 2009-12-16 17:24:15 -0500 | [diff] [blame] | 135 | if (!check_event_name(arg)) |
| 136 | semantic_error("%s is bad for event name -it must " |
| 137 | "follow C symbol-naming rule.", arg); |
Masami Hiramatsu | af663d7 | 2009-12-15 10:32:18 -0500 | [diff] [blame] | 138 | pp->event = strdup(arg); |
| 139 | arg = tmp; |
| 140 | } |
| 141 | |
Masami Hiramatsu | 2a9c8c3 | 2010-02-25 08:36:12 -0500 | [diff] [blame^] | 142 | ptr = strpbrk(arg, ";:+@%"); |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 143 | if (ptr) { |
| 144 | nc = *ptr; |
| 145 | *ptr++ = '\0'; |
| 146 | } |
| 147 | |
| 148 | /* Check arg is function or file and copy it */ |
| 149 | if (strchr(arg, '.')) /* File */ |
| 150 | pp->file = strdup(arg); |
| 151 | else /* Function */ |
| 152 | pp->function = strdup(arg); |
| 153 | DIE_IF(pp->file == NULL && pp->function == NULL); |
| 154 | |
| 155 | /* Parse other options */ |
| 156 | while (ptr) { |
| 157 | arg = ptr; |
| 158 | c = nc; |
Masami Hiramatsu | 2a9c8c3 | 2010-02-25 08:36:12 -0500 | [diff] [blame^] | 159 | if (c == ';') { /* Lazy pattern must be the last part */ |
| 160 | pp->lazy_line = strdup(arg); |
| 161 | break; |
| 162 | } |
| 163 | ptr = strpbrk(arg, ";:+@%"); |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 164 | if (ptr) { |
| 165 | nc = *ptr; |
| 166 | *ptr++ = '\0'; |
| 167 | } |
| 168 | switch (c) { |
| 169 | case ':': /* Line number */ |
| 170 | pp->line = strtoul(arg, &tmp, 0); |
| 171 | if (*tmp != '\0') |
Masami Hiramatsu | 2a9c8c3 | 2010-02-25 08:36:12 -0500 | [diff] [blame^] | 172 | semantic_error("There is non-digit char" |
| 173 | " in line number."); |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 174 | break; |
| 175 | case '+': /* Byte offset from a symbol */ |
| 176 | pp->offset = strtoul(arg, &tmp, 0); |
| 177 | if (*tmp != '\0') |
Masami Hiramatsu | 2a9c8c3 | 2010-02-25 08:36:12 -0500 | [diff] [blame^] | 178 | semantic_error("There is non-digit character" |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 179 | " in offset."); |
| 180 | break; |
| 181 | case '@': /* File name */ |
| 182 | if (pp->file) |
| 183 | semantic_error("SRC@SRC is not allowed."); |
| 184 | pp->file = strdup(arg); |
| 185 | DIE_IF(pp->file == NULL); |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 186 | break; |
| 187 | case '%': /* Probe places */ |
| 188 | if (strcmp(arg, "return") == 0) { |
| 189 | pp->retprobe = 1; |
| 190 | } else /* Others not supported yet */ |
| 191 | semantic_error("%%%s is not supported.", arg); |
| 192 | break; |
| 193 | default: |
| 194 | DIE_IF("Program has a bug."); |
| 195 | break; |
| 196 | } |
| 197 | } |
| 198 | |
| 199 | /* Exclusion check */ |
Masami Hiramatsu | 2a9c8c3 | 2010-02-25 08:36:12 -0500 | [diff] [blame^] | 200 | if (pp->lazy_line && pp->line) |
| 201 | semantic_error("Lazy pattern can't be used with line number."); |
| 202 | |
| 203 | if (pp->lazy_line && pp->offset) |
| 204 | semantic_error("Lazy pattern can't be used with offset."); |
| 205 | |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 206 | if (pp->line && pp->offset) |
| 207 | semantic_error("Offset can't be used with line number."); |
| 208 | |
Masami Hiramatsu | 2a9c8c3 | 2010-02-25 08:36:12 -0500 | [diff] [blame^] | 209 | if (!pp->line && !pp->lazy_line && pp->file && !pp->function) |
| 210 | semantic_error("File always requires line number or " |
| 211 | "lazy pattern."); |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 212 | |
| 213 | if (pp->offset && !pp->function) |
| 214 | semantic_error("Offset requires an entry function."); |
| 215 | |
| 216 | if (pp->retprobe && !pp->function) |
| 217 | semantic_error("Return probe requires an entry function."); |
| 218 | |
Masami Hiramatsu | 2a9c8c3 | 2010-02-25 08:36:12 -0500 | [diff] [blame^] | 219 | if ((pp->offset || pp->line || pp->lazy_line) && pp->retprobe) |
| 220 | semantic_error("Offset/Line/Lazy pattern can't be used with " |
| 221 | "return probe."); |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 222 | |
Masami Hiramatsu | 2a9c8c3 | 2010-02-25 08:36:12 -0500 | [diff] [blame^] | 223 | pr_debug("symbol:%s file:%s line:%d offset:%d return:%d lazy:%s\n", |
| 224 | pp->function, pp->file, pp->line, pp->offset, pp->retprobe, |
| 225 | pp->lazy_line); |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 226 | } |
| 227 | |
| 228 | /* Parse perf-probe event definition */ |
Masami Hiramatsu | fac13fd | 2009-12-15 10:31:14 -0500 | [diff] [blame] | 229 | void parse_perf_probe_event(const char *str, struct probe_point *pp, |
| 230 | bool *need_dwarf) |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 231 | { |
Masami Hiramatsu | e1c01d6 | 2009-11-30 19:20:05 -0500 | [diff] [blame] | 232 | char **argv; |
Masami Hiramatsu | fac13fd | 2009-12-15 10:31:14 -0500 | [diff] [blame] | 233 | int argc, i; |
| 234 | |
| 235 | *need_dwarf = false; |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 236 | |
Masami Hiramatsu | e1c01d6 | 2009-11-30 19:20:05 -0500 | [diff] [blame] | 237 | argv = argv_split(str, &argc); |
| 238 | if (!argv) |
| 239 | die("argv_split failed."); |
| 240 | if (argc > MAX_PROBE_ARGS + 1) |
| 241 | semantic_error("Too many arguments"); |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 242 | |
| 243 | /* Parse probe point */ |
| 244 | parse_perf_probe_probepoint(argv[0], pp); |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 245 | if (pp->file || pp->line) |
Masami Hiramatsu | fac13fd | 2009-12-15 10:31:14 -0500 | [diff] [blame] | 246 | *need_dwarf = true; |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 247 | |
Masami Hiramatsu | e1c01d6 | 2009-11-30 19:20:05 -0500 | [diff] [blame] | 248 | /* Copy arguments and ensure return probe has no C argument */ |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 249 | pp->nr_args = argc - 1; |
Masami Hiramatsu | e1c01d6 | 2009-11-30 19:20:05 -0500 | [diff] [blame] | 250 | pp->args = zalloc(sizeof(char *) * pp->nr_args); |
| 251 | for (i = 0; i < pp->nr_args; i++) { |
| 252 | pp->args[i] = strdup(argv[i + 1]); |
| 253 | if (!pp->args[i]) |
| 254 | die("Failed to copy argument."); |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 255 | if (is_c_varname(pp->args[i])) { |
| 256 | if (pp->retprobe) |
| 257 | semantic_error("You can't specify local" |
| 258 | " variable for kretprobe"); |
Masami Hiramatsu | fac13fd | 2009-12-15 10:31:14 -0500 | [diff] [blame] | 259 | *need_dwarf = true; |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 260 | } |
Masami Hiramatsu | e1c01d6 | 2009-11-30 19:20:05 -0500 | [diff] [blame] | 261 | } |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 262 | |
Masami Hiramatsu | e1c01d6 | 2009-11-30 19:20:05 -0500 | [diff] [blame] | 263 | argv_free(argv); |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 264 | } |
| 265 | |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 266 | /* Parse kprobe_events event into struct probe_point */ |
Masami Hiramatsu | af663d7 | 2009-12-15 10:32:18 -0500 | [diff] [blame] | 267 | void parse_trace_kprobe_event(const char *str, struct probe_point *pp) |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 268 | { |
| 269 | char pr; |
| 270 | char *p; |
| 271 | int ret, i, argc; |
| 272 | char **argv; |
| 273 | |
| 274 | pr_debug("Parsing kprobe_events: %s\n", str); |
| 275 | argv = argv_split(str, &argc); |
| 276 | if (!argv) |
| 277 | die("argv_split failed."); |
| 278 | if (argc < 2) |
| 279 | semantic_error("Too less arguments."); |
| 280 | |
| 281 | /* Scan event and group name. */ |
Liming Wang | 93aaa45 | 2009-12-02 16:42:54 +0800 | [diff] [blame] | 282 | ret = sscanf(argv[0], "%c:%a[^/ \t]/%a[^ \t]", |
Masami Hiramatsu | af663d7 | 2009-12-15 10:32:18 -0500 | [diff] [blame] | 283 | &pr, (float *)(void *)&pp->group, |
| 284 | (float *)(void *)&pp->event); |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 285 | if (ret != 3) |
| 286 | semantic_error("Failed to parse event name: %s", argv[0]); |
Masami Hiramatsu | af663d7 | 2009-12-15 10:32:18 -0500 | [diff] [blame] | 287 | pr_debug("Group:%s Event:%s probe:%c\n", pp->group, pp->event, pr); |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 288 | |
| 289 | pp->retprobe = (pr == 'r'); |
| 290 | |
| 291 | /* Scan function name and offset */ |
Masami Hiramatsu | af663d7 | 2009-12-15 10:32:18 -0500 | [diff] [blame] | 292 | ret = sscanf(argv[1], "%a[^+]+%d", (float *)(void *)&pp->function, |
| 293 | &pp->offset); |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 294 | if (ret == 1) |
| 295 | pp->offset = 0; |
| 296 | |
| 297 | /* kprobe_events doesn't have this information */ |
| 298 | pp->line = 0; |
| 299 | pp->file = NULL; |
| 300 | |
| 301 | pp->nr_args = argc - 2; |
| 302 | pp->args = zalloc(sizeof(char *) * pp->nr_args); |
| 303 | for (i = 0; i < pp->nr_args; i++) { |
| 304 | p = strchr(argv[i + 2], '='); |
| 305 | if (p) /* We don't need which register is assigned. */ |
| 306 | *p = '\0'; |
| 307 | pp->args[i] = strdup(argv[i + 2]); |
| 308 | if (!pp->args[i]) |
| 309 | die("Failed to copy argument."); |
| 310 | } |
| 311 | |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 312 | argv_free(argv); |
| 313 | } |
| 314 | |
Masami Hiramatsu | 7ef17aa | 2009-12-15 10:32:47 -0500 | [diff] [blame] | 315 | /* Synthesize only probe point (not argument) */ |
| 316 | int synthesize_perf_probe_point(struct probe_point *pp) |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 317 | { |
| 318 | char *buf; |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 319 | char offs[64] = "", line[64] = ""; |
Masami Hiramatsu | 7ef17aa | 2009-12-15 10:32:47 -0500 | [diff] [blame] | 320 | int ret; |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 321 | |
| 322 | pp->probes[0] = buf = zalloc(MAX_CMDLEN); |
| 323 | if (!buf) |
| 324 | die("Failed to allocate memory by zalloc."); |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 325 | if (pp->offset) { |
| 326 | ret = e_snprintf(offs, 64, "+%d", pp->offset); |
| 327 | if (ret <= 0) |
| 328 | goto error; |
| 329 | } |
| 330 | if (pp->line) { |
| 331 | ret = e_snprintf(line, 64, ":%d", pp->line); |
| 332 | if (ret <= 0) |
| 333 | goto error; |
| 334 | } |
| 335 | |
| 336 | if (pp->function) |
| 337 | ret = e_snprintf(buf, MAX_CMDLEN, "%s%s%s%s", pp->function, |
| 338 | offs, pp->retprobe ? "%return" : "", line); |
| 339 | else |
Masami Hiramatsu | 8498845 | 2009-12-07 12:00:53 -0500 | [diff] [blame] | 340 | ret = e_snprintf(buf, MAX_CMDLEN, "%s%s", pp->file, line); |
Masami Hiramatsu | 7ef17aa | 2009-12-15 10:32:47 -0500 | [diff] [blame] | 341 | if (ret <= 0) { |
| 342 | error: |
| 343 | free(pp->probes[0]); |
| 344 | pp->probes[0] = NULL; |
| 345 | } |
| 346 | return ret; |
| 347 | } |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 348 | |
Masami Hiramatsu | 7ef17aa | 2009-12-15 10:32:47 -0500 | [diff] [blame] | 349 | int synthesize_perf_probe_event(struct probe_point *pp) |
| 350 | { |
| 351 | char *buf; |
| 352 | int i, len, ret; |
| 353 | |
| 354 | len = synthesize_perf_probe_point(pp); |
| 355 | if (len < 0) |
| 356 | return 0; |
| 357 | |
| 358 | buf = pp->probes[0]; |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 359 | for (i = 0; i < pp->nr_args; i++) { |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 360 | ret = e_snprintf(&buf[len], MAX_CMDLEN - len, " %s", |
| 361 | pp->args[i]); |
| 362 | if (ret <= 0) |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 363 | goto error; |
| 364 | len += ret; |
| 365 | } |
| 366 | pp->found = 1; |
| 367 | |
| 368 | return pp->found; |
| 369 | error: |
| 370 | free(pp->probes[0]); |
Masami Hiramatsu | 7ef17aa | 2009-12-15 10:32:47 -0500 | [diff] [blame] | 371 | pp->probes[0] = NULL; |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 372 | |
| 373 | return ret; |
| 374 | } |
| 375 | |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 376 | int synthesize_trace_kprobe_event(struct probe_point *pp) |
| 377 | { |
| 378 | char *buf; |
| 379 | int i, len, ret; |
| 380 | |
| 381 | pp->probes[0] = buf = zalloc(MAX_CMDLEN); |
| 382 | if (!buf) |
| 383 | die("Failed to allocate memory by zalloc."); |
| 384 | ret = e_snprintf(buf, MAX_CMDLEN, "%s+%d", pp->function, pp->offset); |
| 385 | if (ret <= 0) |
| 386 | goto error; |
| 387 | len = ret; |
| 388 | |
| 389 | for (i = 0; i < pp->nr_args; i++) { |
| 390 | ret = e_snprintf(&buf[len], MAX_CMDLEN - len, " %s", |
| 391 | pp->args[i]); |
| 392 | if (ret <= 0) |
| 393 | goto error; |
| 394 | len += ret; |
| 395 | } |
| 396 | pp->found = 1; |
| 397 | |
| 398 | return pp->found; |
| 399 | error: |
| 400 | free(pp->probes[0]); |
Masami Hiramatsu | 7ef17aa | 2009-12-15 10:32:47 -0500 | [diff] [blame] | 401 | pp->probes[0] = NULL; |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 402 | |
| 403 | return ret; |
| 404 | } |
| 405 | |
| 406 | static int open_kprobe_events(int flags, int mode) |
| 407 | { |
| 408 | char buf[PATH_MAX]; |
| 409 | int ret; |
| 410 | |
| 411 | ret = e_snprintf(buf, PATH_MAX, "%s/../kprobe_events", debugfs_path); |
| 412 | if (ret < 0) |
| 413 | die("Failed to make kprobe_events path."); |
| 414 | |
| 415 | ret = open(buf, flags, mode); |
| 416 | if (ret < 0) { |
| 417 | if (errno == ENOENT) |
| 418 | die("kprobe_events file does not exist -" |
Liming Wang | 63bbd5e | 2009-12-29 16:37:09 +0800 | [diff] [blame] | 419 | " please rebuild with CONFIG_KPROBE_EVENT."); |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 420 | else |
| 421 | die("Could not open kprobe_events file: %s", |
| 422 | strerror(errno)); |
| 423 | } |
| 424 | return ret; |
| 425 | } |
| 426 | |
| 427 | /* Get raw string list of current kprobe_events */ |
| 428 | static struct strlist *get_trace_kprobe_event_rawlist(int fd) |
| 429 | { |
| 430 | int ret, idx; |
| 431 | FILE *fp; |
| 432 | char buf[MAX_CMDLEN]; |
| 433 | char *p; |
| 434 | struct strlist *sl; |
| 435 | |
| 436 | sl = strlist__new(true, NULL); |
| 437 | |
| 438 | fp = fdopen(dup(fd), "r"); |
| 439 | while (!feof(fp)) { |
| 440 | p = fgets(buf, MAX_CMDLEN, fp); |
| 441 | if (!p) |
| 442 | break; |
| 443 | |
| 444 | idx = strlen(p) - 1; |
| 445 | if (p[idx] == '\n') |
| 446 | p[idx] = '\0'; |
| 447 | ret = strlist__add(sl, buf); |
| 448 | if (ret < 0) |
| 449 | die("strlist__add failed: %s", strerror(-ret)); |
| 450 | } |
| 451 | fclose(fp); |
| 452 | |
| 453 | return sl; |
| 454 | } |
| 455 | |
| 456 | /* Free and zero clear probe_point */ |
| 457 | static void clear_probe_point(struct probe_point *pp) |
| 458 | { |
| 459 | int i; |
| 460 | |
Masami Hiramatsu | af663d7 | 2009-12-15 10:32:18 -0500 | [diff] [blame] | 461 | if (pp->event) |
| 462 | free(pp->event); |
| 463 | if (pp->group) |
| 464 | free(pp->group); |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 465 | if (pp->function) |
| 466 | free(pp->function); |
| 467 | if (pp->file) |
| 468 | free(pp->file); |
Masami Hiramatsu | 2a9c8c3 | 2010-02-25 08:36:12 -0500 | [diff] [blame^] | 469 | if (pp->lazy_line) |
| 470 | free(pp->lazy_line); |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 471 | for (i = 0; i < pp->nr_args; i++) |
| 472 | free(pp->args[i]); |
| 473 | if (pp->args) |
| 474 | free(pp->args); |
| 475 | for (i = 0; i < pp->found; i++) |
| 476 | free(pp->probes[i]); |
Julia Lawall | 5660ce3 | 2009-12-09 20:26:18 +0100 | [diff] [blame] | 477 | memset(pp, 0, sizeof(*pp)); |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 478 | } |
| 479 | |
Masami Hiramatsu | 278498d | 2009-12-08 17:02:40 -0500 | [diff] [blame] | 480 | /* Show an event */ |
Masami Hiramatsu | af663d7 | 2009-12-15 10:32:18 -0500 | [diff] [blame] | 481 | static void show_perf_probe_event(const char *event, const char *place, |
| 482 | struct probe_point *pp) |
Masami Hiramatsu | 278498d | 2009-12-08 17:02:40 -0500 | [diff] [blame] | 483 | { |
Masami Hiramatsu | 7e990a5 | 2009-12-15 10:31:21 -0500 | [diff] [blame] | 484 | int i, ret; |
Masami Hiramatsu | 278498d | 2009-12-08 17:02:40 -0500 | [diff] [blame] | 485 | char buf[128]; |
| 486 | |
Masami Hiramatsu | af663d7 | 2009-12-15 10:32:18 -0500 | [diff] [blame] | 487 | ret = e_snprintf(buf, 128, "%s:%s", pp->group, event); |
Masami Hiramatsu | 7e990a5 | 2009-12-15 10:31:21 -0500 | [diff] [blame] | 488 | if (ret < 0) |
| 489 | die("Failed to copy event: %s", strerror(-ret)); |
Masami Hiramatsu | 278498d | 2009-12-08 17:02:40 -0500 | [diff] [blame] | 490 | printf(" %-40s (on %s", buf, place); |
| 491 | |
| 492 | if (pp->nr_args > 0) { |
| 493 | printf(" with"); |
| 494 | for (i = 0; i < pp->nr_args; i++) |
| 495 | printf(" %s", pp->args[i]); |
| 496 | } |
| 497 | printf(")\n"); |
| 498 | } |
| 499 | |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 500 | /* List up current perf-probe events */ |
| 501 | void show_perf_probe_events(void) |
| 502 | { |
Masami Hiramatsu | 7ef17aa | 2009-12-15 10:32:47 -0500 | [diff] [blame] | 503 | int fd; |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 504 | struct probe_point pp; |
| 505 | struct strlist *rawlist; |
| 506 | struct str_node *ent; |
| 507 | |
Masami Hiramatsu | 7204133 | 2010-01-05 17:47:10 -0500 | [diff] [blame] | 508 | setup_pager(); |
| 509 | |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 510 | fd = open_kprobe_events(O_RDONLY, 0); |
| 511 | rawlist = get_trace_kprobe_event_rawlist(fd); |
| 512 | close(fd); |
| 513 | |
Masami Hiramatsu | adf365f | 2009-12-15 10:32:03 -0500 | [diff] [blame] | 514 | strlist__for_each(ent, rawlist) { |
Masami Hiramatsu | af663d7 | 2009-12-15 10:32:18 -0500 | [diff] [blame] | 515 | parse_trace_kprobe_event(ent->s, &pp); |
Masami Hiramatsu | 278498d | 2009-12-08 17:02:40 -0500 | [diff] [blame] | 516 | /* Synthesize only event probe point */ |
Masami Hiramatsu | 7ef17aa | 2009-12-15 10:32:47 -0500 | [diff] [blame] | 517 | synthesize_perf_probe_point(&pp); |
Masami Hiramatsu | 278498d | 2009-12-08 17:02:40 -0500 | [diff] [blame] | 518 | /* Show an event */ |
Masami Hiramatsu | af663d7 | 2009-12-15 10:32:18 -0500 | [diff] [blame] | 519 | show_perf_probe_event(pp.event, pp.probes[0], &pp); |
Masami Hiramatsu | 4de189f | 2009-11-30 19:20:17 -0500 | [diff] [blame] | 520 | clear_probe_point(&pp); |
| 521 | } |
| 522 | |
| 523 | strlist__delete(rawlist); |
| 524 | } |
| 525 | |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 526 | /* Get current perf-probe event names */ |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 527 | static struct strlist *get_perf_event_names(int fd, bool include_group) |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 528 | { |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 529 | char buf[128]; |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 530 | struct strlist *sl, *rawlist; |
| 531 | struct str_node *ent; |
Masami Hiramatsu | af663d7 | 2009-12-15 10:32:18 -0500 | [diff] [blame] | 532 | struct probe_point pp; |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 533 | |
Masami Hiramatsu | af663d7 | 2009-12-15 10:32:18 -0500 | [diff] [blame] | 534 | memset(&pp, 0, sizeof(pp)); |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 535 | rawlist = get_trace_kprobe_event_rawlist(fd); |
| 536 | |
Masami Hiramatsu | e1d2017 | 2009-12-07 12:00:46 -0500 | [diff] [blame] | 537 | sl = strlist__new(true, NULL); |
Masami Hiramatsu | adf365f | 2009-12-15 10:32:03 -0500 | [diff] [blame] | 538 | strlist__for_each(ent, rawlist) { |
Masami Hiramatsu | af663d7 | 2009-12-15 10:32:18 -0500 | [diff] [blame] | 539 | parse_trace_kprobe_event(ent->s, &pp); |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 540 | if (include_group) { |
Masami Hiramatsu | af663d7 | 2009-12-15 10:32:18 -0500 | [diff] [blame] | 541 | if (e_snprintf(buf, 128, "%s:%s", pp.group, |
| 542 | pp.event) < 0) |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 543 | die("Failed to copy group:event name."); |
| 544 | strlist__add(sl, buf); |
| 545 | } else |
Masami Hiramatsu | af663d7 | 2009-12-15 10:32:18 -0500 | [diff] [blame] | 546 | strlist__add(sl, pp.event); |
| 547 | clear_probe_point(&pp); |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 548 | } |
| 549 | |
| 550 | strlist__delete(rawlist); |
| 551 | |
| 552 | return sl; |
| 553 | } |
| 554 | |
Masami Hiramatsu | a9b495b | 2009-12-08 17:02:47 -0500 | [diff] [blame] | 555 | static void write_trace_kprobe_event(int fd, const char *buf) |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 556 | { |
| 557 | int ret; |
| 558 | |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 559 | pr_debug("Writing event: %s\n", buf); |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 560 | ret = write(fd, buf, strlen(buf)); |
| 561 | if (ret <= 0) |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 562 | die("Failed to write event: %s", strerror(errno)); |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 563 | } |
| 564 | |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 565 | static void get_new_event_name(char *buf, size_t len, const char *base, |
Masami Hiramatsu | d761b08 | 2009-12-15 10:32:25 -0500 | [diff] [blame] | 566 | struct strlist *namelist, bool allow_suffix) |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 567 | { |
| 568 | int i, ret; |
Masami Hiramatsu | 17f88fc | 2009-12-08 17:03:02 -0500 | [diff] [blame] | 569 | |
| 570 | /* Try no suffix */ |
| 571 | ret = e_snprintf(buf, len, "%s", base); |
| 572 | if (ret < 0) |
| 573 | die("snprintf() failed: %s", strerror(-ret)); |
| 574 | if (!strlist__has_entry(namelist, buf)) |
| 575 | return; |
| 576 | |
Masami Hiramatsu | d761b08 | 2009-12-15 10:32:25 -0500 | [diff] [blame] | 577 | if (!allow_suffix) { |
| 578 | pr_warning("Error: event \"%s\" already exists. " |
| 579 | "(Use -f to force duplicates.)\n", base); |
| 580 | die("Can't add new event."); |
| 581 | } |
| 582 | |
Masami Hiramatsu | 17f88fc | 2009-12-08 17:03:02 -0500 | [diff] [blame] | 583 | /* Try to add suffix */ |
| 584 | for (i = 1; i < MAX_EVENT_INDEX; i++) { |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 585 | ret = e_snprintf(buf, len, "%s_%d", base, i); |
| 586 | if (ret < 0) |
| 587 | die("snprintf() failed: %s", strerror(-ret)); |
| 588 | if (!strlist__has_entry(namelist, buf)) |
| 589 | break; |
| 590 | } |
| 591 | if (i == MAX_EVENT_INDEX) |
| 592 | die("Too many events are on the same function."); |
| 593 | } |
| 594 | |
Masami Hiramatsu | d761b08 | 2009-12-15 10:32:25 -0500 | [diff] [blame] | 595 | void add_trace_kprobe_events(struct probe_point *probes, int nr_probes, |
| 596 | bool force_add) |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 597 | { |
| 598 | int i, j, fd; |
| 599 | struct probe_point *pp; |
| 600 | char buf[MAX_CMDLEN]; |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 601 | char event[64]; |
| 602 | struct strlist *namelist; |
Masami Hiramatsu | d761b08 | 2009-12-15 10:32:25 -0500 | [diff] [blame] | 603 | bool allow_suffix; |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 604 | |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 605 | fd = open_kprobe_events(O_RDWR, O_APPEND); |
| 606 | /* Get current event names */ |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 607 | namelist = get_perf_event_names(fd, false); |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 608 | |
| 609 | for (j = 0; j < nr_probes; j++) { |
| 610 | pp = probes + j; |
Masami Hiramatsu | af663d7 | 2009-12-15 10:32:18 -0500 | [diff] [blame] | 611 | if (!pp->event) |
| 612 | pp->event = strdup(pp->function); |
| 613 | if (!pp->group) |
| 614 | pp->group = strdup(PERFPROBE_GROUP); |
| 615 | DIE_IF(!pp->event || !pp->group); |
Masami Hiramatsu | d761b08 | 2009-12-15 10:32:25 -0500 | [diff] [blame] | 616 | /* If force_add is true, suffix search is allowed */ |
| 617 | allow_suffix = force_add; |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 618 | for (i = 0; i < pp->found; i++) { |
| 619 | /* Get an unused new event name */ |
Masami Hiramatsu | d761b08 | 2009-12-15 10:32:25 -0500 | [diff] [blame] | 620 | get_new_event_name(event, 64, pp->event, namelist, |
| 621 | allow_suffix); |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 622 | snprintf(buf, MAX_CMDLEN, "%c:%s/%s %s\n", |
| 623 | pp->retprobe ? 'r' : 'p', |
Masami Hiramatsu | af663d7 | 2009-12-15 10:32:18 -0500 | [diff] [blame] | 624 | pp->group, event, |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 625 | pp->probes[i]); |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 626 | write_trace_kprobe_event(fd, buf); |
Masami Hiramatsu | a9b495b | 2009-12-08 17:02:47 -0500 | [diff] [blame] | 627 | printf("Added new event:\n"); |
| 628 | /* Get the first parameter (probe-point) */ |
| 629 | sscanf(pp->probes[i], "%s", buf); |
Masami Hiramatsu | af663d7 | 2009-12-15 10:32:18 -0500 | [diff] [blame] | 630 | show_perf_probe_event(event, buf, pp); |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 631 | /* Add added event name to namelist */ |
| 632 | strlist__add(namelist, event); |
Masami Hiramatsu | d761b08 | 2009-12-15 10:32:25 -0500 | [diff] [blame] | 633 | /* |
| 634 | * Probes after the first probe which comes from same |
| 635 | * user input are always allowed to add suffix, because |
| 636 | * there might be several addresses corresponding to |
| 637 | * one code line. |
| 638 | */ |
| 639 | allow_suffix = true; |
Masami Hiramatsu | b498ce1 | 2009-11-30 19:20:25 -0500 | [diff] [blame] | 640 | } |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 641 | } |
Masami Hiramatsu | a9b495b | 2009-12-08 17:02:47 -0500 | [diff] [blame] | 642 | /* Show how to use the event. */ |
| 643 | printf("\nYou can now use it on all perf tools, such as:\n\n"); |
| 644 | printf("\tperf record -e %s:%s -a sleep 1\n\n", PERFPROBE_GROUP, event); |
| 645 | |
Masami Hiramatsu | e1d2017 | 2009-12-07 12:00:46 -0500 | [diff] [blame] | 646 | strlist__delete(namelist); |
Masami Hiramatsu | 50656ee | 2009-11-30 19:19:58 -0500 | [diff] [blame] | 647 | close(fd); |
| 648 | } |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 649 | |
Masami Hiramatsu | bbbb521 | 2009-12-15 10:32:10 -0500 | [diff] [blame] | 650 | static void __del_trace_kprobe_event(int fd, struct str_node *ent) |
| 651 | { |
| 652 | char *p; |
| 653 | char buf[128]; |
| 654 | |
| 655 | /* Convert from perf-probe event to trace-kprobe event */ |
| 656 | if (e_snprintf(buf, 128, "-:%s", ent->s) < 0) |
| 657 | die("Failed to copy event."); |
| 658 | p = strchr(buf + 2, ':'); |
| 659 | if (!p) |
| 660 | die("Internal error: %s should have ':' but not.", ent->s); |
| 661 | *p = '/'; |
| 662 | |
| 663 | write_trace_kprobe_event(fd, buf); |
| 664 | printf("Remove event: %s\n", ent->s); |
| 665 | } |
| 666 | |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 667 | static void del_trace_kprobe_event(int fd, const char *group, |
| 668 | const char *event, struct strlist *namelist) |
| 669 | { |
| 670 | char buf[128]; |
Masami Hiramatsu | bbbb521 | 2009-12-15 10:32:10 -0500 | [diff] [blame] | 671 | struct str_node *ent, *n; |
| 672 | int found = 0; |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 673 | |
| 674 | if (e_snprintf(buf, 128, "%s:%s", group, event) < 0) |
| 675 | die("Failed to copy event."); |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 676 | |
Masami Hiramatsu | bbbb521 | 2009-12-15 10:32:10 -0500 | [diff] [blame] | 677 | if (strpbrk(buf, "*?")) { /* Glob-exp */ |
| 678 | strlist__for_each_safe(ent, n, namelist) |
| 679 | if (strglobmatch(ent->s, buf)) { |
| 680 | found++; |
| 681 | __del_trace_kprobe_event(fd, ent); |
| 682 | strlist__remove(namelist, ent); |
| 683 | } |
| 684 | } else { |
| 685 | ent = strlist__find(namelist, buf); |
| 686 | if (ent) { |
| 687 | found++; |
| 688 | __del_trace_kprobe_event(fd, ent); |
| 689 | strlist__remove(namelist, ent); |
| 690 | } |
| 691 | } |
| 692 | if (found == 0) |
| 693 | pr_info("Info: event \"%s\" does not exist, could not remove it.\n", buf); |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 694 | } |
| 695 | |
| 696 | void del_trace_kprobe_events(struct strlist *dellist) |
| 697 | { |
| 698 | int fd; |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 699 | const char *group, *event; |
| 700 | char *p, *str; |
| 701 | struct str_node *ent; |
| 702 | struct strlist *namelist; |
| 703 | |
| 704 | fd = open_kprobe_events(O_RDWR, O_APPEND); |
| 705 | /* Get current event names */ |
| 706 | namelist = get_perf_event_names(fd, true); |
| 707 | |
Masami Hiramatsu | adf365f | 2009-12-15 10:32:03 -0500 | [diff] [blame] | 708 | strlist__for_each(ent, dellist) { |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 709 | str = strdup(ent->s); |
| 710 | if (!str) |
| 711 | die("Failed to copy event."); |
Masami Hiramatsu | bbbb521 | 2009-12-15 10:32:10 -0500 | [diff] [blame] | 712 | pr_debug("Parsing: %s\n", str); |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 713 | p = strchr(str, ':'); |
| 714 | if (p) { |
| 715 | group = str; |
| 716 | *p = '\0'; |
| 717 | event = p + 1; |
| 718 | } else { |
Masami Hiramatsu | bbbb521 | 2009-12-15 10:32:10 -0500 | [diff] [blame] | 719 | group = "*"; |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 720 | event = str; |
| 721 | } |
Masami Hiramatsu | bbbb521 | 2009-12-15 10:32:10 -0500 | [diff] [blame] | 722 | pr_debug("Group: %s, Event: %s\n", group, event); |
Masami Hiramatsu | fa28244 | 2009-12-08 17:03:23 -0500 | [diff] [blame] | 723 | del_trace_kprobe_event(fd, group, event, namelist); |
| 724 | free(str); |
| 725 | } |
| 726 | strlist__delete(namelist); |
| 727 | close(fd); |
| 728 | } |
| 729 | |
Masami Hiramatsu | 631c9de | 2010-01-06 09:45:34 -0500 | [diff] [blame] | 730 | #define LINEBUF_SIZE 256 |
Masami Hiramatsu | 5c8d1cb | 2010-02-25 08:36:04 -0500 | [diff] [blame] | 731 | #define NR_ADDITIONAL_LINES 2 |
Masami Hiramatsu | 631c9de | 2010-01-06 09:45:34 -0500 | [diff] [blame] | 732 | |
| 733 | static void show_one_line(FILE *fp, unsigned int l, bool skip, bool show_num) |
| 734 | { |
| 735 | char buf[LINEBUF_SIZE]; |
| 736 | const char *color = PERF_COLOR_BLUE; |
| 737 | |
| 738 | if (fgets(buf, LINEBUF_SIZE, fp) == NULL) |
| 739 | goto error; |
| 740 | if (!skip) { |
| 741 | if (show_num) |
| 742 | fprintf(stdout, "%7u %s", l, buf); |
| 743 | else |
| 744 | color_fprintf(stdout, color, " %s", buf); |
| 745 | } |
| 746 | |
| 747 | while (strlen(buf) == LINEBUF_SIZE - 1 && |
| 748 | buf[LINEBUF_SIZE - 2] != '\n') { |
| 749 | if (fgets(buf, LINEBUF_SIZE, fp) == NULL) |
| 750 | goto error; |
| 751 | if (!skip) { |
| 752 | if (show_num) |
| 753 | fprintf(stdout, "%s", buf); |
| 754 | else |
| 755 | color_fprintf(stdout, color, "%s", buf); |
| 756 | } |
| 757 | } |
| 758 | return; |
| 759 | error: |
| 760 | if (feof(fp)) |
| 761 | die("Source file is shorter than expected."); |
| 762 | else |
| 763 | die("File read error: %s", strerror(errno)); |
| 764 | } |
| 765 | |
| 766 | void show_line_range(struct line_range *lr) |
| 767 | { |
| 768 | unsigned int l = 1; |
| 769 | struct line_node *ln; |
| 770 | FILE *fp; |
| 771 | |
| 772 | setup_pager(); |
| 773 | |
| 774 | if (lr->function) |
| 775 | fprintf(stdout, "<%s:%d>\n", lr->function, |
| 776 | lr->start - lr->offset); |
| 777 | else |
| 778 | fprintf(stdout, "<%s:%d>\n", lr->file, lr->start); |
| 779 | |
| 780 | fp = fopen(lr->path, "r"); |
| 781 | if (fp == NULL) |
| 782 | die("Failed to open %s: %s", lr->path, strerror(errno)); |
| 783 | /* Skip to starting line number */ |
| 784 | while (l < lr->start) |
| 785 | show_one_line(fp, l++, true, false); |
| 786 | |
| 787 | list_for_each_entry(ln, &lr->line_list, list) { |
| 788 | while (ln->line > l) |
| 789 | show_one_line(fp, (l++) - lr->offset, false, false); |
| 790 | show_one_line(fp, (l++) - lr->offset, false, true); |
| 791 | } |
Masami Hiramatsu | 5c8d1cb | 2010-02-25 08:36:04 -0500 | [diff] [blame] | 792 | |
| 793 | if (lr->end == INT_MAX) |
| 794 | lr->end = l + NR_ADDITIONAL_LINES; |
| 795 | while (l < lr->end && !feof(fp)) |
| 796 | show_one_line(fp, (l++) - lr->offset, false, false); |
| 797 | |
Masami Hiramatsu | 631c9de | 2010-01-06 09:45:34 -0500 | [diff] [blame] | 798 | fclose(fp); |
| 799 | } |