Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 1 | #include <linux/list.h> |
Sukadev Bhattiprolu | c5de47f | 2015-06-10 00:25:07 -0700 | [diff] [blame] | 2 | #include <linux/compiler.h> |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 3 | #include <sys/types.h> |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 4 | #include <unistd.h> |
| 5 | #include <stdio.h> |
Adrian Hunter | dc0a620 | 2014-07-31 09:00:49 +0300 | [diff] [blame] | 6 | #include <stdbool.h> |
Adrian Hunter | 7d4bdab | 2014-07-31 09:00:50 +0300 | [diff] [blame] | 7 | #include <stdarg.h> |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 8 | #include <dirent.h> |
Borislav Petkov | cd0cfad | 2013-12-09 17:14:24 +0100 | [diff] [blame] | 9 | #include <api/fs/fs.h> |
Stephane Eranian | 410136f | 2013-11-12 17:58:49 +0100 | [diff] [blame] | 10 | #include <locale.h> |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 11 | #include "util.h" |
| 12 | #include "pmu.h" |
| 13 | #include "parse-events.h" |
Yan, Zheng | 7ae92e7 | 2012-09-10 15:53:50 +0800 | [diff] [blame] | 14 | #include "cpumap.h" |
Sukadev Bhattiprolu | 933f82f | 2016-09-15 15:24:40 -0700 | [diff] [blame] | 15 | #include "header.h" |
| 16 | #include "pmu-events/pmu-events.h" |
Andi Kleen | 61eb2eb | 2016-09-15 15:24:44 -0700 | [diff] [blame] | 17 | #include "cache.h" |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 18 | |
Arnaldo Carvalho de Melo | ab1bf653 | 2013-01-18 17:05:09 -0300 | [diff] [blame] | 19 | struct perf_pmu_format { |
| 20 | char *name; |
| 21 | int value; |
| 22 | DECLARE_BITMAP(bits, PERF_PMU_FORMAT_BITS); |
| 23 | struct list_head list; |
| 24 | }; |
| 25 | |
Robert Richter | 50a9667 | 2012-08-16 21:10:24 +0200 | [diff] [blame] | 26 | #define EVENT_SOURCE_DEVICE_PATH "/bus/event_source/devices/" |
| 27 | |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 28 | int perf_pmu_parse(struct list_head *list, char *name); |
| 29 | extern FILE *perf_pmu_in; |
| 30 | |
| 31 | static LIST_HEAD(pmus); |
| 32 | |
| 33 | /* |
| 34 | * Parse & process all the sysfs attributes located under |
| 35 | * the directory specified in 'dir' parameter. |
| 36 | */ |
Jiri Olsa | cff7f95 | 2012-11-10 01:46:50 +0100 | [diff] [blame] | 37 | int perf_pmu__format_parse(char *dir, struct list_head *head) |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 38 | { |
| 39 | struct dirent *evt_ent; |
| 40 | DIR *format_dir; |
| 41 | int ret = 0; |
| 42 | |
| 43 | format_dir = opendir(dir); |
| 44 | if (!format_dir) |
| 45 | return -EINVAL; |
| 46 | |
| 47 | while (!ret && (evt_ent = readdir(format_dir))) { |
| 48 | char path[PATH_MAX]; |
| 49 | char *name = evt_ent->d_name; |
| 50 | FILE *file; |
| 51 | |
| 52 | if (!strcmp(name, ".") || !strcmp(name, "..")) |
| 53 | continue; |
| 54 | |
| 55 | snprintf(path, PATH_MAX, "%s/%s", dir, name); |
| 56 | |
| 57 | ret = -EINVAL; |
| 58 | file = fopen(path, "r"); |
| 59 | if (!file) |
| 60 | break; |
| 61 | |
| 62 | perf_pmu_in = file; |
| 63 | ret = perf_pmu_parse(head, name); |
| 64 | fclose(file); |
| 65 | } |
| 66 | |
| 67 | closedir(format_dir); |
| 68 | return ret; |
| 69 | } |
| 70 | |
| 71 | /* |
| 72 | * Reading/parsing the default pmu format definition, which should be |
| 73 | * located at: |
| 74 | * /sys/bus/event_source/devices/<dev>/format as sysfs group attributes. |
| 75 | */ |
Adrian Hunter | b6b96fb | 2013-07-04 16:20:25 +0300 | [diff] [blame] | 76 | static int pmu_format(const char *name, struct list_head *format) |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 77 | { |
| 78 | struct stat st; |
| 79 | char path[PATH_MAX]; |
Arnaldo Carvalho de Melo | cf38fad | 2013-11-05 14:48:50 -0300 | [diff] [blame] | 80 | const char *sysfs = sysfs__mountpoint(); |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 81 | |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 82 | if (!sysfs) |
| 83 | return -1; |
| 84 | |
| 85 | snprintf(path, PATH_MAX, |
Robert Richter | 50a9667 | 2012-08-16 21:10:24 +0200 | [diff] [blame] | 86 | "%s" EVENT_SOURCE_DEVICE_PATH "%s/format", sysfs, name); |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 87 | |
| 88 | if (stat(path, &st) < 0) |
Robert Richter | 9bc8f9f | 2012-06-14 22:38:37 +0200 | [diff] [blame] | 89 | return 0; /* no error if format does not exist */ |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 90 | |
Jiri Olsa | cff7f95 | 2012-11-10 01:46:50 +0100 | [diff] [blame] | 91 | if (perf_pmu__format_parse(path, format)) |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 92 | return -1; |
| 93 | |
| 94 | return 0; |
| 95 | } |
| 96 | |
Stephane Eranian | 410136f | 2013-11-12 17:58:49 +0100 | [diff] [blame] | 97 | static int perf_pmu__parse_scale(struct perf_pmu_alias *alias, char *dir, char *name) |
| 98 | { |
| 99 | struct stat st; |
| 100 | ssize_t sret; |
| 101 | char scale[128]; |
| 102 | int fd, ret = -1; |
| 103 | char path[PATH_MAX]; |
Jiri Olsa | ea8f75f | 2016-03-08 19:42:30 +0100 | [diff] [blame] | 104 | char *lc; |
Stephane Eranian | 410136f | 2013-11-12 17:58:49 +0100 | [diff] [blame] | 105 | |
| 106 | snprintf(path, PATH_MAX, "%s/%s.scale", dir, name); |
| 107 | |
| 108 | fd = open(path, O_RDONLY); |
| 109 | if (fd == -1) |
| 110 | return -1; |
| 111 | |
| 112 | if (fstat(fd, &st) < 0) |
| 113 | goto error; |
| 114 | |
| 115 | sret = read(fd, scale, sizeof(scale)-1); |
| 116 | if (sret < 0) |
| 117 | goto error; |
| 118 | |
Madhavan Srinivasan | 9ecae06 | 2015-05-31 11:36:23 +0530 | [diff] [blame] | 119 | if (scale[sret - 1] == '\n') |
| 120 | scale[sret - 1] = '\0'; |
| 121 | else |
| 122 | scale[sret] = '\0'; |
| 123 | |
Stephane Eranian | 410136f | 2013-11-12 17:58:49 +0100 | [diff] [blame] | 124 | /* |
| 125 | * save current locale |
| 126 | */ |
| 127 | lc = setlocale(LC_NUMERIC, NULL); |
| 128 | |
| 129 | /* |
Jiri Olsa | f9a5978 | 2016-03-03 10:53:48 +0100 | [diff] [blame] | 130 | * The lc string may be allocated in static storage, |
| 131 | * so get a dynamic copy to make it survive setlocale |
| 132 | * call below. |
| 133 | */ |
| 134 | lc = strdup(lc); |
| 135 | if (!lc) { |
| 136 | ret = -ENOMEM; |
| 137 | goto error; |
| 138 | } |
| 139 | |
| 140 | /* |
Stephane Eranian | 410136f | 2013-11-12 17:58:49 +0100 | [diff] [blame] | 141 | * force to C locale to ensure kernel |
| 142 | * scale string is converted correctly. |
| 143 | * kernel uses default C locale. |
| 144 | */ |
| 145 | setlocale(LC_NUMERIC, "C"); |
| 146 | |
| 147 | alias->scale = strtod(scale, NULL); |
| 148 | |
| 149 | /* restore locale */ |
| 150 | setlocale(LC_NUMERIC, lc); |
| 151 | |
Jiri Olsa | ea8f75f | 2016-03-08 19:42:30 +0100 | [diff] [blame] | 152 | free(lc); |
Jiri Olsa | f9a5978 | 2016-03-03 10:53:48 +0100 | [diff] [blame] | 153 | |
Stephane Eranian | 410136f | 2013-11-12 17:58:49 +0100 | [diff] [blame] | 154 | ret = 0; |
| 155 | error: |
| 156 | close(fd); |
| 157 | return ret; |
| 158 | } |
| 159 | |
| 160 | static int perf_pmu__parse_unit(struct perf_pmu_alias *alias, char *dir, char *name) |
| 161 | { |
| 162 | char path[PATH_MAX]; |
| 163 | ssize_t sret; |
| 164 | int fd; |
| 165 | |
| 166 | snprintf(path, PATH_MAX, "%s/%s.unit", dir, name); |
| 167 | |
| 168 | fd = open(path, O_RDONLY); |
| 169 | if (fd == -1) |
| 170 | return -1; |
| 171 | |
Markus Trippelsdorf | d85ce83 | 2015-12-14 16:44:40 +0100 | [diff] [blame] | 172 | sret = read(fd, alias->unit, UNIT_MAX_LEN); |
Stephane Eranian | 410136f | 2013-11-12 17:58:49 +0100 | [diff] [blame] | 173 | if (sret < 0) |
| 174 | goto error; |
| 175 | |
| 176 | close(fd); |
| 177 | |
Madhavan Srinivasan | 9ecae06 | 2015-05-31 11:36:23 +0530 | [diff] [blame] | 178 | if (alias->unit[sret - 1] == '\n') |
| 179 | alias->unit[sret - 1] = '\0'; |
| 180 | else |
| 181 | alias->unit[sret] = '\0'; |
Stephane Eranian | 410136f | 2013-11-12 17:58:49 +0100 | [diff] [blame] | 182 | |
| 183 | return 0; |
| 184 | error: |
| 185 | close(fd); |
| 186 | alias->unit[0] = '\0'; |
| 187 | return -1; |
| 188 | } |
| 189 | |
Matt Fleming | 044330c | 2014-11-21 10:31:12 +0100 | [diff] [blame] | 190 | static int |
| 191 | perf_pmu__parse_per_pkg(struct perf_pmu_alias *alias, char *dir, char *name) |
| 192 | { |
| 193 | char path[PATH_MAX]; |
| 194 | int fd; |
| 195 | |
| 196 | snprintf(path, PATH_MAX, "%s/%s.per-pkg", dir, name); |
| 197 | |
| 198 | fd = open(path, O_RDONLY); |
| 199 | if (fd == -1) |
| 200 | return -1; |
| 201 | |
| 202 | close(fd); |
| 203 | |
| 204 | alias->per_pkg = true; |
| 205 | return 0; |
| 206 | } |
| 207 | |
Jiri Olsa | 1d9e446 | 2014-11-21 10:31:13 +0100 | [diff] [blame] | 208 | static int perf_pmu__parse_snapshot(struct perf_pmu_alias *alias, |
| 209 | char *dir, char *name) |
| 210 | { |
| 211 | char path[PATH_MAX]; |
| 212 | int fd; |
| 213 | |
| 214 | snprintf(path, PATH_MAX, "%s/%s.snapshot", dir, name); |
| 215 | |
| 216 | fd = open(path, O_RDONLY); |
| 217 | if (fd == -1) |
| 218 | return -1; |
| 219 | |
| 220 | alias->snapshot = true; |
| 221 | close(fd); |
| 222 | return 0; |
| 223 | } |
| 224 | |
Sukadev Bhattiprolu | 70c646e | 2015-06-10 00:25:08 -0700 | [diff] [blame] | 225 | static int __perf_pmu__new_alias(struct list_head *list, char *dir, char *name, |
Andi Kleen | dd5f103 | 2016-09-15 15:24:50 -0700 | [diff] [blame] | 226 | char *desc, char *val, char *long_desc, |
| 227 | char *topic) |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 228 | { |
Arnaldo Carvalho de Melo | 5c6ccc3 | 2013-01-18 16:54:00 -0300 | [diff] [blame] | 229 | struct perf_pmu_alias *alias; |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 230 | int ret; |
| 231 | |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 232 | alias = malloc(sizeof(*alias)); |
| 233 | if (!alias) |
| 234 | return -ENOMEM; |
| 235 | |
| 236 | INIT_LIST_HEAD(&alias->terms); |
Stephane Eranian | 410136f | 2013-11-12 17:58:49 +0100 | [diff] [blame] | 237 | alias->scale = 1.0; |
| 238 | alias->unit[0] = '\0'; |
Matt Fleming | 044330c | 2014-11-21 10:31:12 +0100 | [diff] [blame] | 239 | alias->per_pkg = false; |
Stephane Eranian | 8453092 | 2016-01-06 19:50:01 +0100 | [diff] [blame] | 240 | alias->snapshot = false; |
Stephane Eranian | 410136f | 2013-11-12 17:58:49 +0100 | [diff] [blame] | 241 | |
Sukadev Bhattiprolu | 70c646e | 2015-06-10 00:25:08 -0700 | [diff] [blame] | 242 | ret = parse_events_terms(&alias->terms, val); |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 243 | if (ret) { |
Sukadev Bhattiprolu | 70c646e | 2015-06-10 00:25:08 -0700 | [diff] [blame] | 244 | pr_err("Cannot parse alias %s: %d\n", val, ret); |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 245 | free(alias); |
| 246 | return ret; |
| 247 | } |
| 248 | |
| 249 | alias->name = strdup(name); |
Sukadev Bhattiprolu | 70c646e | 2015-06-10 00:25:08 -0700 | [diff] [blame] | 250 | if (dir) { |
| 251 | /* |
| 252 | * load unit name and scale if available |
| 253 | */ |
| 254 | perf_pmu__parse_unit(alias, dir, name); |
| 255 | perf_pmu__parse_scale(alias, dir, name); |
| 256 | perf_pmu__parse_per_pkg(alias, dir, name); |
| 257 | perf_pmu__parse_snapshot(alias, dir, name); |
| 258 | } |
Stephane Eranian | 410136f | 2013-11-12 17:58:49 +0100 | [diff] [blame] | 259 | |
Andi Kleen | 08e60ed | 2016-09-15 15:24:43 -0700 | [diff] [blame] | 260 | alias->desc = desc ? strdup(desc) : NULL; |
Sukadev Bhattiprolu | c8d6828 | 2016-09-15 15:24:48 -0700 | [diff] [blame] | 261 | alias->long_desc = long_desc ? strdup(long_desc) : |
| 262 | desc ? strdup(desc) : NULL; |
Andi Kleen | dd5f103 | 2016-09-15 15:24:50 -0700 | [diff] [blame] | 263 | alias->topic = topic ? strdup(topic) : NULL; |
Andi Kleen | 08e60ed | 2016-09-15 15:24:43 -0700 | [diff] [blame] | 264 | |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 265 | list_add_tail(&alias->list, list); |
Stephane Eranian | 410136f | 2013-11-12 17:58:49 +0100 | [diff] [blame] | 266 | |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 267 | return 0; |
| 268 | } |
| 269 | |
Sukadev Bhattiprolu | 70c646e | 2015-06-10 00:25:08 -0700 | [diff] [blame] | 270 | static int perf_pmu__new_alias(struct list_head *list, char *dir, char *name, FILE *file) |
| 271 | { |
| 272 | char buf[256]; |
| 273 | int ret; |
| 274 | |
| 275 | ret = fread(buf, 1, sizeof(buf), file); |
| 276 | if (ret == 0) |
| 277 | return -EINVAL; |
| 278 | |
| 279 | buf[ret] = 0; |
| 280 | |
Andi Kleen | dd5f103 | 2016-09-15 15:24:50 -0700 | [diff] [blame] | 281 | return __perf_pmu__new_alias(list, dir, name, NULL, buf, NULL, NULL); |
Sukadev Bhattiprolu | 70c646e | 2015-06-10 00:25:08 -0700 | [diff] [blame] | 282 | } |
| 283 | |
Matt Fleming | 46441bd | 2014-09-24 15:04:06 +0100 | [diff] [blame] | 284 | static inline bool pmu_alias_info_file(char *name) |
| 285 | { |
| 286 | size_t len; |
| 287 | |
| 288 | len = strlen(name); |
| 289 | if (len > 5 && !strcmp(name + len - 5, ".unit")) |
| 290 | return true; |
| 291 | if (len > 6 && !strcmp(name + len - 6, ".scale")) |
| 292 | return true; |
Matt Fleming | 044330c | 2014-11-21 10:31:12 +0100 | [diff] [blame] | 293 | if (len > 8 && !strcmp(name + len - 8, ".per-pkg")) |
| 294 | return true; |
Jiri Olsa | 1d9e446 | 2014-11-21 10:31:13 +0100 | [diff] [blame] | 295 | if (len > 9 && !strcmp(name + len - 9, ".snapshot")) |
| 296 | return true; |
Matt Fleming | 46441bd | 2014-09-24 15:04:06 +0100 | [diff] [blame] | 297 | |
| 298 | return false; |
| 299 | } |
| 300 | |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 301 | /* |
| 302 | * Process all the sysfs attributes located under the directory |
| 303 | * specified in 'dir' parameter. |
| 304 | */ |
| 305 | static int pmu_aliases_parse(char *dir, struct list_head *head) |
| 306 | { |
| 307 | struct dirent *evt_ent; |
| 308 | DIR *event_dir; |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 309 | |
| 310 | event_dir = opendir(dir); |
| 311 | if (!event_dir) |
| 312 | return -EINVAL; |
| 313 | |
Andi Kleen | 940db6d | 2016-02-17 14:44:55 -0800 | [diff] [blame] | 314 | while ((evt_ent = readdir(event_dir))) { |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 315 | char path[PATH_MAX]; |
| 316 | char *name = evt_ent->d_name; |
| 317 | FILE *file; |
| 318 | |
| 319 | if (!strcmp(name, ".") || !strcmp(name, "..")) |
| 320 | continue; |
| 321 | |
Stephane Eranian | 410136f | 2013-11-12 17:58:49 +0100 | [diff] [blame] | 322 | /* |
Matt Fleming | 46441bd | 2014-09-24 15:04:06 +0100 | [diff] [blame] | 323 | * skip info files parsed in perf_pmu__new_alias() |
Stephane Eranian | 410136f | 2013-11-12 17:58:49 +0100 | [diff] [blame] | 324 | */ |
Matt Fleming | 46441bd | 2014-09-24 15:04:06 +0100 | [diff] [blame] | 325 | if (pmu_alias_info_file(name)) |
Stephane Eranian | 410136f | 2013-11-12 17:58:49 +0100 | [diff] [blame] | 326 | continue; |
| 327 | |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 328 | snprintf(path, PATH_MAX, "%s/%s", dir, name); |
| 329 | |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 330 | file = fopen(path, "r"); |
Andi Kleen | 940db6d | 2016-02-17 14:44:55 -0800 | [diff] [blame] | 331 | if (!file) { |
| 332 | pr_debug("Cannot open %s\n", path); |
| 333 | continue; |
| 334 | } |
Stephane Eranian | 410136f | 2013-11-12 17:58:49 +0100 | [diff] [blame] | 335 | |
Andi Kleen | 940db6d | 2016-02-17 14:44:55 -0800 | [diff] [blame] | 336 | if (perf_pmu__new_alias(head, dir, name, file) < 0) |
| 337 | pr_debug("Cannot set up %s\n", name); |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 338 | fclose(file); |
| 339 | } |
| 340 | |
| 341 | closedir(event_dir); |
Andi Kleen | 940db6d | 2016-02-17 14:44:55 -0800 | [diff] [blame] | 342 | return 0; |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 343 | } |
| 344 | |
| 345 | /* |
| 346 | * Reading the pmu event aliases definition, which should be located at: |
| 347 | * /sys/bus/event_source/devices/<dev>/events as sysfs group attributes. |
| 348 | */ |
Adrian Hunter | b6b96fb | 2013-07-04 16:20:25 +0300 | [diff] [blame] | 349 | static int pmu_aliases(const char *name, struct list_head *head) |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 350 | { |
| 351 | struct stat st; |
| 352 | char path[PATH_MAX]; |
Arnaldo Carvalho de Melo | cf38fad | 2013-11-05 14:48:50 -0300 | [diff] [blame] | 353 | const char *sysfs = sysfs__mountpoint(); |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 354 | |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 355 | if (!sysfs) |
| 356 | return -1; |
| 357 | |
| 358 | snprintf(path, PATH_MAX, |
| 359 | "%s/bus/event_source/devices/%s/events", sysfs, name); |
| 360 | |
| 361 | if (stat(path, &st) < 0) |
Jiri Olsa | 3fded96 | 2012-10-10 14:53:16 +0200 | [diff] [blame] | 362 | return 0; /* no error if 'events' does not exist */ |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 363 | |
| 364 | if (pmu_aliases_parse(path, head)) |
| 365 | return -1; |
| 366 | |
| 367 | return 0; |
| 368 | } |
| 369 | |
Arnaldo Carvalho de Melo | 5c6ccc3 | 2013-01-18 16:54:00 -0300 | [diff] [blame] | 370 | static int pmu_alias_terms(struct perf_pmu_alias *alias, |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 371 | struct list_head *terms) |
| 372 | { |
Jiri Olsa | 7c2f816 | 2014-04-16 20:49:02 +0200 | [diff] [blame] | 373 | struct parse_events_term *term, *cloned; |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 374 | LIST_HEAD(list); |
| 375 | int ret; |
| 376 | |
| 377 | list_for_each_entry(term, &alias->terms, list) { |
Jiri Olsa | 7c2f816 | 2014-04-16 20:49:02 +0200 | [diff] [blame] | 378 | ret = parse_events_term__clone(&cloned, term); |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 379 | if (ret) { |
Arnaldo Carvalho de Melo | 682dc24 | 2016-02-12 16:48:00 -0300 | [diff] [blame] | 380 | parse_events_terms__purge(&list); |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 381 | return ret; |
| 382 | } |
Jiri Olsa | 7c2f816 | 2014-04-16 20:49:02 +0200 | [diff] [blame] | 383 | list_add_tail(&cloned->list, &list); |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 384 | } |
| 385 | list_splice(&list, terms); |
| 386 | return 0; |
| 387 | } |
| 388 | |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 389 | /* |
| 390 | * Reading/parsing the default pmu type value, which should be |
| 391 | * located at: |
| 392 | * /sys/bus/event_source/devices/<dev>/type as sysfs attribute. |
| 393 | */ |
Adrian Hunter | b6b96fb | 2013-07-04 16:20:25 +0300 | [diff] [blame] | 394 | static int pmu_type(const char *name, __u32 *type) |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 395 | { |
| 396 | struct stat st; |
| 397 | char path[PATH_MAX]; |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 398 | FILE *file; |
| 399 | int ret = 0; |
Arnaldo Carvalho de Melo | cf38fad | 2013-11-05 14:48:50 -0300 | [diff] [blame] | 400 | const char *sysfs = sysfs__mountpoint(); |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 401 | |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 402 | if (!sysfs) |
| 403 | return -1; |
| 404 | |
| 405 | snprintf(path, PATH_MAX, |
Robert Richter | 50a9667 | 2012-08-16 21:10:24 +0200 | [diff] [blame] | 406 | "%s" EVENT_SOURCE_DEVICE_PATH "%s/type", sysfs, name); |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 407 | |
| 408 | if (stat(path, &st) < 0) |
| 409 | return -1; |
| 410 | |
| 411 | file = fopen(path, "r"); |
| 412 | if (!file) |
| 413 | return -EINVAL; |
| 414 | |
| 415 | if (1 != fscanf(file, "%u", type)) |
| 416 | ret = -1; |
| 417 | |
| 418 | fclose(file); |
| 419 | return ret; |
| 420 | } |
| 421 | |
Robert Richter | 50a9667 | 2012-08-16 21:10:24 +0200 | [diff] [blame] | 422 | /* Add all pmus in sysfs to pmu list: */ |
| 423 | static void pmu_read_sysfs(void) |
| 424 | { |
| 425 | char path[PATH_MAX]; |
Robert Richter | 50a9667 | 2012-08-16 21:10:24 +0200 | [diff] [blame] | 426 | DIR *dir; |
| 427 | struct dirent *dent; |
Arnaldo Carvalho de Melo | cf38fad | 2013-11-05 14:48:50 -0300 | [diff] [blame] | 428 | const char *sysfs = sysfs__mountpoint(); |
Robert Richter | 50a9667 | 2012-08-16 21:10:24 +0200 | [diff] [blame] | 429 | |
Robert Richter | 50a9667 | 2012-08-16 21:10:24 +0200 | [diff] [blame] | 430 | if (!sysfs) |
| 431 | return; |
| 432 | |
| 433 | snprintf(path, PATH_MAX, |
| 434 | "%s" EVENT_SOURCE_DEVICE_PATH, sysfs); |
| 435 | |
| 436 | dir = opendir(path); |
| 437 | if (!dir) |
| 438 | return; |
| 439 | |
| 440 | while ((dent = readdir(dir))) { |
| 441 | if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, "..")) |
| 442 | continue; |
| 443 | /* add to static LIST_HEAD(pmus): */ |
| 444 | perf_pmu__find(dent->d_name); |
| 445 | } |
| 446 | |
| 447 | closedir(dir); |
| 448 | } |
| 449 | |
Adrian Hunter | b6b96fb | 2013-07-04 16:20:25 +0300 | [diff] [blame] | 450 | static struct cpu_map *pmu_cpumask(const char *name) |
Yan, Zheng | 7ae92e7 | 2012-09-10 15:53:50 +0800 | [diff] [blame] | 451 | { |
| 452 | struct stat st; |
| 453 | char path[PATH_MAX]; |
Yan, Zheng | 7ae92e7 | 2012-09-10 15:53:50 +0800 | [diff] [blame] | 454 | FILE *file; |
| 455 | struct cpu_map *cpus; |
Arnaldo Carvalho de Melo | cf38fad | 2013-11-05 14:48:50 -0300 | [diff] [blame] | 456 | const char *sysfs = sysfs__mountpoint(); |
Mark Rutland | 7e3fcffe | 2016-09-08 11:21:52 +0100 | [diff] [blame] | 457 | const char *templates[] = { |
| 458 | "%s/bus/event_source/devices/%s/cpumask", |
| 459 | "%s/bus/event_source/devices/%s/cpus", |
| 460 | NULL |
| 461 | }; |
| 462 | const char **template; |
Yan, Zheng | 7ae92e7 | 2012-09-10 15:53:50 +0800 | [diff] [blame] | 463 | |
Yan, Zheng | 7ae92e7 | 2012-09-10 15:53:50 +0800 | [diff] [blame] | 464 | if (!sysfs) |
| 465 | return NULL; |
| 466 | |
Mark Rutland | 7e3fcffe | 2016-09-08 11:21:52 +0100 | [diff] [blame] | 467 | for (template = templates; *template; template++) { |
| 468 | snprintf(path, PATH_MAX, *template, sysfs, name); |
| 469 | if (stat(path, &st) == 0) |
| 470 | break; |
| 471 | } |
Yan, Zheng | 7ae92e7 | 2012-09-10 15:53:50 +0800 | [diff] [blame] | 472 | |
Mark Rutland | 7e3fcffe | 2016-09-08 11:21:52 +0100 | [diff] [blame] | 473 | if (!*template) |
Yan, Zheng | 7ae92e7 | 2012-09-10 15:53:50 +0800 | [diff] [blame] | 474 | return NULL; |
| 475 | |
| 476 | file = fopen(path, "r"); |
| 477 | if (!file) |
| 478 | return NULL; |
| 479 | |
| 480 | cpus = cpu_map__read(file); |
| 481 | fclose(file); |
| 482 | return cpus; |
| 483 | } |
| 484 | |
Sukadev Bhattiprolu | 933f82f | 2016-09-15 15:24:40 -0700 | [diff] [blame] | 485 | /* |
| 486 | * Return the CPU id as a raw string. |
| 487 | * |
| 488 | * Each architecture should provide a more precise id string that |
| 489 | * can be use to match the architecture's "mapfile". |
| 490 | */ |
| 491 | char * __weak get_cpuid_str(void) |
| 492 | { |
| 493 | return NULL; |
| 494 | } |
| 495 | |
| 496 | /* |
| 497 | * From the pmu_events_map, find the table of PMU events that corresponds |
| 498 | * to the current running CPU. Then, add all PMU events from that table |
| 499 | * as aliases. |
| 500 | */ |
| 501 | static void pmu_add_cpu_aliases(struct list_head *head) |
| 502 | { |
| 503 | int i; |
| 504 | struct pmu_events_map *map; |
| 505 | struct pmu_event *pe; |
| 506 | char *cpuid; |
| 507 | |
Andi Kleen | fc06e2a | 2016-09-15 15:24:46 -0700 | [diff] [blame] | 508 | cpuid = getenv("PERF_CPUID"); |
| 509 | if (cpuid) |
| 510 | cpuid = strdup(cpuid); |
| 511 | if (!cpuid) |
| 512 | cpuid = get_cpuid_str(); |
Sukadev Bhattiprolu | 933f82f | 2016-09-15 15:24:40 -0700 | [diff] [blame] | 513 | if (!cpuid) |
| 514 | return; |
| 515 | |
Andi Kleen | fc06e2a | 2016-09-15 15:24:46 -0700 | [diff] [blame] | 516 | pr_debug("Using CPUID %s\n", cpuid); |
| 517 | |
Sukadev Bhattiprolu | 933f82f | 2016-09-15 15:24:40 -0700 | [diff] [blame] | 518 | i = 0; |
| 519 | while (1) { |
| 520 | map = &pmu_events_map[i++]; |
| 521 | if (!map->table) |
| 522 | goto out; |
| 523 | |
| 524 | if (!strcmp(map->cpuid, cpuid)) |
| 525 | break; |
| 526 | } |
| 527 | |
| 528 | /* |
| 529 | * Found a matching PMU events table. Create aliases |
| 530 | */ |
| 531 | i = 0; |
| 532 | while (1) { |
| 533 | pe = &map->table[i++]; |
| 534 | if (!pe->name) |
| 535 | break; |
| 536 | |
| 537 | /* need type casts to override 'const' */ |
| 538 | __perf_pmu__new_alias(head, NULL, (char *)pe->name, |
Sukadev Bhattiprolu | c8d6828 | 2016-09-15 15:24:48 -0700 | [diff] [blame] | 539 | (char *)pe->desc, (char *)pe->event, |
Andi Kleen | dd5f103 | 2016-09-15 15:24:50 -0700 | [diff] [blame] | 540 | (char *)pe->long_desc, (char *)pe->topic); |
Sukadev Bhattiprolu | 933f82f | 2016-09-15 15:24:40 -0700 | [diff] [blame] | 541 | } |
| 542 | |
| 543 | out: |
| 544 | free(cpuid); |
| 545 | } |
| 546 | |
Sukadev Bhattiprolu | c5de47f | 2015-06-10 00:25:07 -0700 | [diff] [blame] | 547 | struct perf_event_attr * __weak |
Adrian Hunter | dc0a620 | 2014-07-31 09:00:49 +0300 | [diff] [blame] | 548 | perf_pmu__get_default_config(struct perf_pmu *pmu __maybe_unused) |
| 549 | { |
| 550 | return NULL; |
| 551 | } |
| 552 | |
Adrian Hunter | b6b96fb | 2013-07-04 16:20:25 +0300 | [diff] [blame] | 553 | static struct perf_pmu *pmu_lookup(const char *name) |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 554 | { |
| 555 | struct perf_pmu *pmu; |
| 556 | LIST_HEAD(format); |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 557 | LIST_HEAD(aliases); |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 558 | __u32 type; |
| 559 | |
| 560 | /* |
| 561 | * The pmu data we store & need consists of the pmu |
| 562 | * type value and format definitions. Load both right |
| 563 | * now. |
| 564 | */ |
| 565 | if (pmu_format(name, &format)) |
| 566 | return NULL; |
| 567 | |
Jiri Olsa | 3fded96 | 2012-10-10 14:53:16 +0200 | [diff] [blame] | 568 | if (pmu_aliases(name, &aliases)) |
| 569 | return NULL; |
| 570 | |
Sukadev Bhattiprolu | 933f82f | 2016-09-15 15:24:40 -0700 | [diff] [blame] | 571 | if (!strcmp(name, "cpu")) |
| 572 | pmu_add_cpu_aliases(&aliases); |
| 573 | |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 574 | if (pmu_type(name, &type)) |
| 575 | return NULL; |
| 576 | |
| 577 | pmu = zalloc(sizeof(*pmu)); |
| 578 | if (!pmu) |
| 579 | return NULL; |
| 580 | |
Yan, Zheng | 7ae92e7 | 2012-09-10 15:53:50 +0800 | [diff] [blame] | 581 | pmu->cpus = pmu_cpumask(name); |
| 582 | |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 583 | INIT_LIST_HEAD(&pmu->format); |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 584 | INIT_LIST_HEAD(&pmu->aliases); |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 585 | list_splice(&format, &pmu->format); |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 586 | list_splice(&aliases, &pmu->aliases); |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 587 | pmu->name = strdup(name); |
| 588 | pmu->type = type; |
Robert Richter | 9bc8f9f | 2012-06-14 22:38:37 +0200 | [diff] [blame] | 589 | list_add_tail(&pmu->list, &pmus); |
Adrian Hunter | dc0a620 | 2014-07-31 09:00:49 +0300 | [diff] [blame] | 590 | |
| 591 | pmu->default_config = perf_pmu__get_default_config(pmu); |
| 592 | |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 593 | return pmu; |
| 594 | } |
| 595 | |
Adrian Hunter | b6b96fb | 2013-07-04 16:20:25 +0300 | [diff] [blame] | 596 | static struct perf_pmu *pmu_find(const char *name) |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 597 | { |
| 598 | struct perf_pmu *pmu; |
| 599 | |
| 600 | list_for_each_entry(pmu, &pmus, list) |
| 601 | if (!strcmp(pmu->name, name)) |
| 602 | return pmu; |
| 603 | |
| 604 | return NULL; |
| 605 | } |
| 606 | |
Robert Richter | 50a9667 | 2012-08-16 21:10:24 +0200 | [diff] [blame] | 607 | struct perf_pmu *perf_pmu__scan(struct perf_pmu *pmu) |
| 608 | { |
| 609 | /* |
| 610 | * pmu iterator: If pmu is NULL, we start at the begin, |
| 611 | * otherwise return the next pmu. Returns NULL on end. |
| 612 | */ |
| 613 | if (!pmu) { |
| 614 | pmu_read_sysfs(); |
| 615 | pmu = list_prepare_entry(pmu, &pmus, list); |
| 616 | } |
| 617 | list_for_each_entry_continue(pmu, &pmus, list) |
| 618 | return pmu; |
| 619 | return NULL; |
| 620 | } |
| 621 | |
Adrian Hunter | b6b96fb | 2013-07-04 16:20:25 +0300 | [diff] [blame] | 622 | struct perf_pmu *perf_pmu__find(const char *name) |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 623 | { |
| 624 | struct perf_pmu *pmu; |
| 625 | |
| 626 | /* |
| 627 | * Once PMU is loaded it stays in the list, |
| 628 | * so we keep us from multiple reading/parsing |
| 629 | * the pmu format definitions. |
| 630 | */ |
| 631 | pmu = pmu_find(name); |
| 632 | if (pmu) |
| 633 | return pmu; |
| 634 | |
| 635 | return pmu_lookup(name); |
| 636 | } |
| 637 | |
Arnaldo Carvalho de Melo | 5c6ccc3 | 2013-01-18 16:54:00 -0300 | [diff] [blame] | 638 | static struct perf_pmu_format * |
Adrian Hunter | 09ff607 | 2015-07-17 19:33:49 +0300 | [diff] [blame] | 639 | pmu_find_format(struct list_head *formats, const char *name) |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 640 | { |
Arnaldo Carvalho de Melo | 5c6ccc3 | 2013-01-18 16:54:00 -0300 | [diff] [blame] | 641 | struct perf_pmu_format *format; |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 642 | |
| 643 | list_for_each_entry(format, formats, list) |
| 644 | if (!strcmp(format->name, name)) |
| 645 | return format; |
| 646 | |
| 647 | return NULL; |
| 648 | } |
| 649 | |
Adrian Hunter | 09ff607 | 2015-07-17 19:33:49 +0300 | [diff] [blame] | 650 | __u64 perf_pmu__format_bits(struct list_head *formats, const char *name) |
| 651 | { |
| 652 | struct perf_pmu_format *format = pmu_find_format(formats, name); |
| 653 | __u64 bits = 0; |
| 654 | int fbit; |
| 655 | |
| 656 | if (!format) |
| 657 | return 0; |
| 658 | |
| 659 | for_each_set_bit(fbit, format->bits, PERF_PMU_FORMAT_BITS) |
| 660 | bits |= 1ULL << fbit; |
| 661 | |
| 662 | return bits; |
| 663 | } |
| 664 | |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 665 | /* |
Adrian Hunter | dc0a620 | 2014-07-31 09:00:49 +0300 | [diff] [blame] | 666 | * Sets value based on the format definition (format parameter) |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 667 | * and unformated value (value parameter). |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 668 | */ |
Adrian Hunter | dc0a620 | 2014-07-31 09:00:49 +0300 | [diff] [blame] | 669 | static void pmu_format_value(unsigned long *format, __u64 value, __u64 *v, |
| 670 | bool zero) |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 671 | { |
| 672 | unsigned long fbit, vbit; |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 673 | |
| 674 | for (fbit = 0, vbit = 0; fbit < PERF_PMU_FORMAT_BITS; fbit++) { |
| 675 | |
| 676 | if (!test_bit(fbit, format)) |
| 677 | continue; |
| 678 | |
Adrian Hunter | dc0a620 | 2014-07-31 09:00:49 +0300 | [diff] [blame] | 679 | if (value & (1llu << vbit++)) |
| 680 | *v |= (1llu << fbit); |
| 681 | else if (zero) |
| 682 | *v &= ~(1llu << fbit); |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 683 | } |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 684 | } |
| 685 | |
Adrian Hunter | 0efe6b6 | 2015-07-17 19:33:50 +0300 | [diff] [blame] | 686 | static __u64 pmu_format_max_value(const unsigned long *format) |
| 687 | { |
Kan Liang | ac0e2cd | 2016-03-30 12:16:15 -0700 | [diff] [blame] | 688 | __u64 w = 0; |
| 689 | int fbit; |
Adrian Hunter | 0efe6b6 | 2015-07-17 19:33:50 +0300 | [diff] [blame] | 690 | |
Kan Liang | ac0e2cd | 2016-03-30 12:16:15 -0700 | [diff] [blame] | 691 | for_each_set_bit(fbit, format, PERF_PMU_FORMAT_BITS) |
| 692 | w |= (1ULL << fbit); |
| 693 | |
| 694 | return w; |
Adrian Hunter | 0efe6b6 | 2015-07-17 19:33:50 +0300 | [diff] [blame] | 695 | } |
| 696 | |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 697 | /* |
Cody P Schafer | 688d4df | 2015-01-07 17:13:50 -0800 | [diff] [blame] | 698 | * Term is a string term, and might be a param-term. Try to look up it's value |
| 699 | * in the remaining terms. |
| 700 | * - We have a term like "base-or-format-term=param-term", |
| 701 | * - We need to find the value supplied for "param-term" (with param-term named |
| 702 | * in a config string) later on in the term list. |
| 703 | */ |
| 704 | static int pmu_resolve_param_term(struct parse_events_term *term, |
| 705 | struct list_head *head_terms, |
| 706 | __u64 *value) |
| 707 | { |
| 708 | struct parse_events_term *t; |
| 709 | |
| 710 | list_for_each_entry(t, head_terms, list) { |
| 711 | if (t->type_val == PARSE_EVENTS__TERM_TYPE_NUM) { |
| 712 | if (!strcmp(t->config, term->config)) { |
| 713 | t->used = true; |
| 714 | *value = t->val.num; |
| 715 | return 0; |
| 716 | } |
| 717 | } |
| 718 | } |
| 719 | |
| 720 | if (verbose) |
| 721 | printf("Required parameter '%s' not specified\n", term->config); |
| 722 | |
| 723 | return -1; |
| 724 | } |
| 725 | |
He Kuang | ffeb883 | 2015-09-28 03:52:14 +0000 | [diff] [blame] | 726 | static char *pmu_formats_string(struct list_head *formats) |
Jiri Olsa | e64b020 | 2015-04-22 21:10:21 +0200 | [diff] [blame] | 727 | { |
| 728 | struct perf_pmu_format *format; |
Masami Hiramatsu | 11db4e2 | 2016-05-10 14:47:44 +0900 | [diff] [blame] | 729 | char *str = NULL; |
| 730 | struct strbuf buf = STRBUF_INIT; |
Jiri Olsa | e64b020 | 2015-04-22 21:10:21 +0200 | [diff] [blame] | 731 | unsigned i = 0; |
| 732 | |
He Kuang | ffeb883 | 2015-09-28 03:52:14 +0000 | [diff] [blame] | 733 | if (!formats) |
Jiri Olsa | e64b020 | 2015-04-22 21:10:21 +0200 | [diff] [blame] | 734 | return NULL; |
| 735 | |
| 736 | /* sysfs exported terms */ |
He Kuang | ffeb883 | 2015-09-28 03:52:14 +0000 | [diff] [blame] | 737 | list_for_each_entry(format, formats, list) |
Masami Hiramatsu | 11db4e2 | 2016-05-10 14:47:44 +0900 | [diff] [blame] | 738 | if (strbuf_addf(&buf, i++ ? ",%s" : "%s", format->name) < 0) |
| 739 | goto error; |
Jiri Olsa | e64b020 | 2015-04-22 21:10:21 +0200 | [diff] [blame] | 740 | |
He Kuang | ffeb883 | 2015-09-28 03:52:14 +0000 | [diff] [blame] | 741 | str = strbuf_detach(&buf, NULL); |
Masami Hiramatsu | 11db4e2 | 2016-05-10 14:47:44 +0900 | [diff] [blame] | 742 | error: |
He Kuang | ffeb883 | 2015-09-28 03:52:14 +0000 | [diff] [blame] | 743 | strbuf_release(&buf); |
Jiri Olsa | e64b020 | 2015-04-22 21:10:21 +0200 | [diff] [blame] | 744 | |
Jiri Olsa | e64b020 | 2015-04-22 21:10:21 +0200 | [diff] [blame] | 745 | return str; |
Jiri Olsa | e64b020 | 2015-04-22 21:10:21 +0200 | [diff] [blame] | 746 | } |
| 747 | |
Cody P Schafer | 688d4df | 2015-01-07 17:13:50 -0800 | [diff] [blame] | 748 | /* |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 749 | * Setup one of config[12] attr members based on the |
Cody P Schafer | 88aca8d | 2014-01-08 08:43:51 -0800 | [diff] [blame] | 750 | * user input data - term parameter. |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 751 | */ |
| 752 | static int pmu_config_term(struct list_head *formats, |
| 753 | struct perf_event_attr *attr, |
Adrian Hunter | dc0a620 | 2014-07-31 09:00:49 +0300 | [diff] [blame] | 754 | struct parse_events_term *term, |
Cody P Schafer | 688d4df | 2015-01-07 17:13:50 -0800 | [diff] [blame] | 755 | struct list_head *head_terms, |
Jiri Olsa | e64b020 | 2015-04-22 21:10:21 +0200 | [diff] [blame] | 756 | bool zero, struct parse_events_error *err) |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 757 | { |
Arnaldo Carvalho de Melo | 5c6ccc3 | 2013-01-18 16:54:00 -0300 | [diff] [blame] | 758 | struct perf_pmu_format *format; |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 759 | __u64 *vp; |
Adrian Hunter | 0efe6b6 | 2015-07-17 19:33:50 +0300 | [diff] [blame] | 760 | __u64 val, max_val; |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 761 | |
| 762 | /* |
Cody P Schafer | 688d4df | 2015-01-07 17:13:50 -0800 | [diff] [blame] | 763 | * If this is a parameter we've already used for parameterized-eval, |
| 764 | * skip it in normal eval. |
| 765 | */ |
| 766 | if (term->used) |
| 767 | return 0; |
| 768 | |
| 769 | /* |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 770 | * Hardcoded terms should be already in, so nothing |
| 771 | * to be done for them. |
| 772 | */ |
| 773 | if (parse_events__is_hardcoded_term(term)) |
| 774 | return 0; |
| 775 | |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 776 | format = pmu_find_format(formats, term->config); |
Cody P Schafer | 688d4df | 2015-01-07 17:13:50 -0800 | [diff] [blame] | 777 | if (!format) { |
| 778 | if (verbose) |
| 779 | printf("Invalid event/parameter '%s'\n", term->config); |
Jiri Olsa | e64b020 | 2015-04-22 21:10:21 +0200 | [diff] [blame] | 780 | if (err) { |
He Kuang | ffeb883 | 2015-09-28 03:52:14 +0000 | [diff] [blame] | 781 | char *pmu_term = pmu_formats_string(formats); |
| 782 | |
Jiri Olsa | e64b020 | 2015-04-22 21:10:21 +0200 | [diff] [blame] | 783 | err->idx = term->err_term; |
| 784 | err->str = strdup("unknown term"); |
He Kuang | ffeb883 | 2015-09-28 03:52:14 +0000 | [diff] [blame] | 785 | err->help = parse_events_formats_error_string(pmu_term); |
| 786 | free(pmu_term); |
Jiri Olsa | e64b020 | 2015-04-22 21:10:21 +0200 | [diff] [blame] | 787 | } |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 788 | return -EINVAL; |
Cody P Schafer | 688d4df | 2015-01-07 17:13:50 -0800 | [diff] [blame] | 789 | } |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 790 | |
| 791 | switch (format->value) { |
| 792 | case PERF_PMU_FORMAT_VALUE_CONFIG: |
| 793 | vp = &attr->config; |
| 794 | break; |
| 795 | case PERF_PMU_FORMAT_VALUE_CONFIG1: |
| 796 | vp = &attr->config1; |
| 797 | break; |
| 798 | case PERF_PMU_FORMAT_VALUE_CONFIG2: |
| 799 | vp = &attr->config2; |
| 800 | break; |
| 801 | default: |
| 802 | return -EINVAL; |
| 803 | } |
| 804 | |
Jiri Olsa | 16fa7e8 | 2012-04-25 18:24:57 +0200 | [diff] [blame] | 805 | /* |
Cody P Schafer | 688d4df | 2015-01-07 17:13:50 -0800 | [diff] [blame] | 806 | * Either directly use a numeric term, or try to translate string terms |
| 807 | * using event parameters. |
Jiri Olsa | 16fa7e8 | 2012-04-25 18:24:57 +0200 | [diff] [blame] | 808 | */ |
Cody P Schafer | 688d4df | 2015-01-07 17:13:50 -0800 | [diff] [blame] | 809 | if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) |
| 810 | val = term->val.num; |
| 811 | else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) { |
| 812 | if (strcmp(term->val.str, "?")) { |
Jiri Olsa | e64b020 | 2015-04-22 21:10:21 +0200 | [diff] [blame] | 813 | if (verbose) { |
Cody P Schafer | 688d4df | 2015-01-07 17:13:50 -0800 | [diff] [blame] | 814 | pr_info("Invalid sysfs entry %s=%s\n", |
| 815 | term->config, term->val.str); |
Jiri Olsa | e64b020 | 2015-04-22 21:10:21 +0200 | [diff] [blame] | 816 | } |
| 817 | if (err) { |
| 818 | err->idx = term->err_val; |
| 819 | err->str = strdup("expected numeric value"); |
| 820 | } |
Cody P Schafer | 688d4df | 2015-01-07 17:13:50 -0800 | [diff] [blame] | 821 | return -EINVAL; |
| 822 | } |
| 823 | |
| 824 | if (pmu_resolve_param_term(term, head_terms, &val)) |
| 825 | return -EINVAL; |
| 826 | } else |
| 827 | return -EINVAL; |
| 828 | |
Adrian Hunter | 0efe6b6 | 2015-07-17 19:33:50 +0300 | [diff] [blame] | 829 | max_val = pmu_format_max_value(format->bits); |
| 830 | if (val > max_val) { |
| 831 | if (err) { |
| 832 | err->idx = term->err_val; |
| 833 | if (asprintf(&err->str, |
| 834 | "value too big for format, maximum is %llu", |
| 835 | (unsigned long long)max_val) < 0) |
| 836 | err->str = strdup("value too big for format"); |
| 837 | return -EINVAL; |
| 838 | } |
| 839 | /* |
| 840 | * Assume we don't care if !err, in which case the value will be |
| 841 | * silently truncated. |
| 842 | */ |
| 843 | } |
| 844 | |
Cody P Schafer | 688d4df | 2015-01-07 17:13:50 -0800 | [diff] [blame] | 845 | pmu_format_value(format->bits, val, vp, zero); |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 846 | return 0; |
| 847 | } |
| 848 | |
Jiri Olsa | cff7f95 | 2012-11-10 01:46:50 +0100 | [diff] [blame] | 849 | int perf_pmu__config_terms(struct list_head *formats, |
| 850 | struct perf_event_attr *attr, |
Adrian Hunter | dc0a620 | 2014-07-31 09:00:49 +0300 | [diff] [blame] | 851 | struct list_head *head_terms, |
Jiri Olsa | e64b020 | 2015-04-22 21:10:21 +0200 | [diff] [blame] | 852 | bool zero, struct parse_events_error *err) |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 853 | { |
Arnaldo Carvalho de Melo | 6cee6cd | 2013-01-18 16:29:49 -0300 | [diff] [blame] | 854 | struct parse_events_term *term; |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 855 | |
Cody P Schafer | 688d4df | 2015-01-07 17:13:50 -0800 | [diff] [blame] | 856 | list_for_each_entry(term, head_terms, list) { |
Jiri Olsa | e64b020 | 2015-04-22 21:10:21 +0200 | [diff] [blame] | 857 | if (pmu_config_term(formats, attr, term, head_terms, |
| 858 | zero, err)) |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 859 | return -EINVAL; |
Cody P Schafer | 688d4df | 2015-01-07 17:13:50 -0800 | [diff] [blame] | 860 | } |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 861 | |
| 862 | return 0; |
| 863 | } |
| 864 | |
| 865 | /* |
| 866 | * Configures event's 'attr' parameter based on the: |
| 867 | * 1) users input - specified in terms parameter |
| 868 | * 2) pmu format definitions - specified by pmu parameter |
| 869 | */ |
| 870 | int perf_pmu__config(struct perf_pmu *pmu, struct perf_event_attr *attr, |
Jiri Olsa | e64b020 | 2015-04-22 21:10:21 +0200 | [diff] [blame] | 871 | struct list_head *head_terms, |
| 872 | struct parse_events_error *err) |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 873 | { |
Adrian Hunter | dc0a620 | 2014-07-31 09:00:49 +0300 | [diff] [blame] | 874 | bool zero = !!pmu->default_config; |
| 875 | |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 876 | attr->type = pmu->type; |
Jiri Olsa | e64b020 | 2015-04-22 21:10:21 +0200 | [diff] [blame] | 877 | return perf_pmu__config_terms(&pmu->format, attr, head_terms, |
| 878 | zero, err); |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 879 | } |
| 880 | |
Arnaldo Carvalho de Melo | 5c6ccc3 | 2013-01-18 16:54:00 -0300 | [diff] [blame] | 881 | static struct perf_pmu_alias *pmu_find_alias(struct perf_pmu *pmu, |
| 882 | struct parse_events_term *term) |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 883 | { |
Arnaldo Carvalho de Melo | 5c6ccc3 | 2013-01-18 16:54:00 -0300 | [diff] [blame] | 884 | struct perf_pmu_alias *alias; |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 885 | char *name; |
| 886 | |
| 887 | if (parse_events__is_hardcoded_term(term)) |
| 888 | return NULL; |
| 889 | |
| 890 | if (term->type_val == PARSE_EVENTS__TERM_TYPE_NUM) { |
| 891 | if (term->val.num != 1) |
| 892 | return NULL; |
| 893 | if (pmu_find_format(&pmu->format, term->config)) |
| 894 | return NULL; |
| 895 | name = term->config; |
| 896 | } else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) { |
| 897 | if (strcasecmp(term->config, "event")) |
| 898 | return NULL; |
| 899 | name = term->val.str; |
| 900 | } else { |
| 901 | return NULL; |
| 902 | } |
| 903 | |
| 904 | list_for_each_entry(alias, &pmu->aliases, list) { |
| 905 | if (!strcasecmp(alias->name, name)) |
| 906 | return alias; |
| 907 | } |
| 908 | return NULL; |
| 909 | } |
| 910 | |
Stephane Eranian | 410136f | 2013-11-12 17:58:49 +0100 | [diff] [blame] | 911 | |
Jiri Olsa | 1d9e446 | 2014-11-21 10:31:13 +0100 | [diff] [blame] | 912 | static int check_info_data(struct perf_pmu_alias *alias, |
| 913 | struct perf_pmu_info *info) |
Stephane Eranian | 410136f | 2013-11-12 17:58:49 +0100 | [diff] [blame] | 914 | { |
| 915 | /* |
| 916 | * Only one term in event definition can |
Jiri Olsa | 1d9e446 | 2014-11-21 10:31:13 +0100 | [diff] [blame] | 917 | * define unit, scale and snapshot, fail |
| 918 | * if there's more than one. |
Stephane Eranian | 410136f | 2013-11-12 17:58:49 +0100 | [diff] [blame] | 919 | */ |
Jiri Olsa | 1d9e446 | 2014-11-21 10:31:13 +0100 | [diff] [blame] | 920 | if ((info->unit && alias->unit) || |
| 921 | (info->scale && alias->scale) || |
| 922 | (info->snapshot && alias->snapshot)) |
Stephane Eranian | 410136f | 2013-11-12 17:58:49 +0100 | [diff] [blame] | 923 | return -EINVAL; |
| 924 | |
| 925 | if (alias->unit) |
Jiri Olsa | 1d9e446 | 2014-11-21 10:31:13 +0100 | [diff] [blame] | 926 | info->unit = alias->unit; |
Stephane Eranian | 410136f | 2013-11-12 17:58:49 +0100 | [diff] [blame] | 927 | |
| 928 | if (alias->scale) |
Jiri Olsa | 1d9e446 | 2014-11-21 10:31:13 +0100 | [diff] [blame] | 929 | info->scale = alias->scale; |
| 930 | |
| 931 | if (alias->snapshot) |
| 932 | info->snapshot = alias->snapshot; |
Stephane Eranian | 410136f | 2013-11-12 17:58:49 +0100 | [diff] [blame] | 933 | |
| 934 | return 0; |
| 935 | } |
| 936 | |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 937 | /* |
| 938 | * Find alias in the terms list and replace it with the terms |
| 939 | * defined for the alias |
| 940 | */ |
Stephane Eranian | 410136f | 2013-11-12 17:58:49 +0100 | [diff] [blame] | 941 | int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms, |
Matt Fleming | 46441bd | 2014-09-24 15:04:06 +0100 | [diff] [blame] | 942 | struct perf_pmu_info *info) |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 943 | { |
Arnaldo Carvalho de Melo | 6cee6cd | 2013-01-18 16:29:49 -0300 | [diff] [blame] | 944 | struct parse_events_term *term, *h; |
Arnaldo Carvalho de Melo | 5c6ccc3 | 2013-01-18 16:54:00 -0300 | [diff] [blame] | 945 | struct perf_pmu_alias *alias; |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 946 | int ret; |
| 947 | |
Matt Fleming | 044330c | 2014-11-21 10:31:12 +0100 | [diff] [blame] | 948 | info->per_pkg = false; |
| 949 | |
Stephane Eranian | 8a39889 | 2014-01-17 16:34:05 +0100 | [diff] [blame] | 950 | /* |
| 951 | * Mark unit and scale as not set |
| 952 | * (different from default values, see below) |
| 953 | */ |
Jiri Olsa | 1d9e446 | 2014-11-21 10:31:13 +0100 | [diff] [blame] | 954 | info->unit = NULL; |
| 955 | info->scale = 0.0; |
| 956 | info->snapshot = false; |
Stephane Eranian | 410136f | 2013-11-12 17:58:49 +0100 | [diff] [blame] | 957 | |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 958 | list_for_each_entry_safe(term, h, head_terms, list) { |
| 959 | alias = pmu_find_alias(pmu, term); |
| 960 | if (!alias) |
| 961 | continue; |
| 962 | ret = pmu_alias_terms(alias, &term->list); |
| 963 | if (ret) |
| 964 | return ret; |
Stephane Eranian | 410136f | 2013-11-12 17:58:49 +0100 | [diff] [blame] | 965 | |
Jiri Olsa | 1d9e446 | 2014-11-21 10:31:13 +0100 | [diff] [blame] | 966 | ret = check_info_data(alias, info); |
Stephane Eranian | 410136f | 2013-11-12 17:58:49 +0100 | [diff] [blame] | 967 | if (ret) |
| 968 | return ret; |
| 969 | |
Matt Fleming | 044330c | 2014-11-21 10:31:12 +0100 | [diff] [blame] | 970 | if (alias->per_pkg) |
| 971 | info->per_pkg = true; |
| 972 | |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 973 | list_del(&term->list); |
| 974 | free(term); |
| 975 | } |
Stephane Eranian | 8a39889 | 2014-01-17 16:34:05 +0100 | [diff] [blame] | 976 | |
| 977 | /* |
| 978 | * if no unit or scale foundin aliases, then |
| 979 | * set defaults as for evsel |
| 980 | * unit cannot left to NULL |
| 981 | */ |
Matt Fleming | 46441bd | 2014-09-24 15:04:06 +0100 | [diff] [blame] | 982 | if (info->unit == NULL) |
| 983 | info->unit = ""; |
Stephane Eranian | 8a39889 | 2014-01-17 16:34:05 +0100 | [diff] [blame] | 984 | |
Matt Fleming | 46441bd | 2014-09-24 15:04:06 +0100 | [diff] [blame] | 985 | if (info->scale == 0.0) |
| 986 | info->scale = 1.0; |
Stephane Eranian | 8a39889 | 2014-01-17 16:34:05 +0100 | [diff] [blame] | 987 | |
Zheng Yan | a6146d5 | 2012-06-15 14:31:41 +0800 | [diff] [blame] | 988 | return 0; |
| 989 | } |
| 990 | |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 991 | int perf_pmu__new_format(struct list_head *list, char *name, |
| 992 | int config, unsigned long *bits) |
| 993 | { |
Arnaldo Carvalho de Melo | 5c6ccc3 | 2013-01-18 16:54:00 -0300 | [diff] [blame] | 994 | struct perf_pmu_format *format; |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 995 | |
| 996 | format = zalloc(sizeof(*format)); |
| 997 | if (!format) |
| 998 | return -ENOMEM; |
| 999 | |
| 1000 | format->name = strdup(name); |
| 1001 | format->value = config; |
| 1002 | memcpy(format->bits, bits, sizeof(format->bits)); |
| 1003 | |
| 1004 | list_add_tail(&format->list, list); |
| 1005 | return 0; |
| 1006 | } |
| 1007 | |
| 1008 | void perf_pmu__set_format(unsigned long *bits, long from, long to) |
| 1009 | { |
| 1010 | long b; |
| 1011 | |
| 1012 | if (!to) |
| 1013 | to = from; |
| 1014 | |
Sukadev Bhattiprolu | 1526813 | 2013-01-17 09:11:30 -0800 | [diff] [blame] | 1015 | memset(bits, 0, BITS_TO_BYTES(PERF_PMU_FORMAT_BITS)); |
Jiri Olsa | cd82a32 | 2012-03-15 20:09:17 +0100 | [diff] [blame] | 1016 | for (b = from; b <= to; b++) |
| 1017 | set_bit(b, bits); |
| 1018 | } |
Andi Kleen | dc098b3 | 2013-04-20 11:02:29 -0700 | [diff] [blame] | 1019 | |
Cody P Schafer | aaea361 | 2015-01-07 17:13:51 -0800 | [diff] [blame] | 1020 | static int sub_non_neg(int a, int b) |
| 1021 | { |
| 1022 | if (b > a) |
| 1023 | return 0; |
| 1024 | return a - b; |
| 1025 | } |
| 1026 | |
Andi Kleen | dc098b3 | 2013-04-20 11:02:29 -0700 | [diff] [blame] | 1027 | static char *format_alias(char *buf, int len, struct perf_pmu *pmu, |
| 1028 | struct perf_pmu_alias *alias) |
| 1029 | { |
Cody P Schafer | aaea361 | 2015-01-07 17:13:51 -0800 | [diff] [blame] | 1030 | struct parse_events_term *term; |
| 1031 | int used = snprintf(buf, len, "%s/%s", pmu->name, alias->name); |
| 1032 | |
| 1033 | list_for_each_entry(term, &alias->terms, list) { |
| 1034 | if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) |
| 1035 | used += snprintf(buf + used, sub_non_neg(len, used), |
| 1036 | ",%s=%s", term->config, |
| 1037 | term->val.str); |
| 1038 | } |
| 1039 | |
| 1040 | if (sub_non_neg(len, used) > 0) { |
| 1041 | buf[used] = '/'; |
| 1042 | used++; |
| 1043 | } |
| 1044 | if (sub_non_neg(len, used) > 0) { |
| 1045 | buf[used] = '\0'; |
| 1046 | used++; |
| 1047 | } else |
| 1048 | buf[len - 1] = '\0'; |
| 1049 | |
Andi Kleen | dc098b3 | 2013-04-20 11:02:29 -0700 | [diff] [blame] | 1050 | return buf; |
| 1051 | } |
| 1052 | |
| 1053 | static char *format_alias_or(char *buf, int len, struct perf_pmu *pmu, |
| 1054 | struct perf_pmu_alias *alias) |
| 1055 | { |
| 1056 | snprintf(buf, len, "%s OR %s/%s/", alias->name, pmu->name, alias->name); |
| 1057 | return buf; |
| 1058 | } |
| 1059 | |
Andi Kleen | dd5f103 | 2016-09-15 15:24:50 -0700 | [diff] [blame] | 1060 | struct sevent { |
Andi Kleen | 08e60ed | 2016-09-15 15:24:43 -0700 | [diff] [blame] | 1061 | char *name; |
| 1062 | char *desc; |
Andi Kleen | dd5f103 | 2016-09-15 15:24:50 -0700 | [diff] [blame] | 1063 | char *topic; |
Andi Kleen | 08e60ed | 2016-09-15 15:24:43 -0700 | [diff] [blame] | 1064 | }; |
| 1065 | |
Andi Kleen | dd5f103 | 2016-09-15 15:24:50 -0700 | [diff] [blame] | 1066 | static int cmp_sevent(const void *a, const void *b) |
Andi Kleen | dc098b3 | 2013-04-20 11:02:29 -0700 | [diff] [blame] | 1067 | { |
Andi Kleen | dd5f103 | 2016-09-15 15:24:50 -0700 | [diff] [blame] | 1068 | const struct sevent *as = a; |
| 1069 | const struct sevent *bs = b; |
Andi Kleen | 08e60ed | 2016-09-15 15:24:43 -0700 | [diff] [blame] | 1070 | |
| 1071 | /* Put extra events last */ |
| 1072 | if (!!as->desc != !!bs->desc) |
| 1073 | return !!as->desc - !!bs->desc; |
Andi Kleen | dd5f103 | 2016-09-15 15:24:50 -0700 | [diff] [blame] | 1074 | if (as->topic && bs->topic) { |
| 1075 | int n = strcmp(as->topic, bs->topic); |
| 1076 | |
| 1077 | if (n) |
| 1078 | return n; |
| 1079 | } |
Andi Kleen | 08e60ed | 2016-09-15 15:24:43 -0700 | [diff] [blame] | 1080 | return strcmp(as->name, bs->name); |
| 1081 | } |
| 1082 | |
| 1083 | static void wordwrap(char *s, int start, int max, int corr) |
| 1084 | { |
| 1085 | int column = start; |
| 1086 | int n; |
| 1087 | |
| 1088 | while (*s) { |
| 1089 | int wlen = strcspn(s, " \t"); |
| 1090 | |
| 1091 | if (column + wlen >= max && column > start) { |
| 1092 | printf("\n%*s", start, ""); |
| 1093 | column = start + corr; |
| 1094 | } |
| 1095 | n = printf("%s%.*s", column > start ? " " : "", wlen, s); |
| 1096 | if (n <= 0) |
| 1097 | break; |
| 1098 | s += wlen; |
| 1099 | column += n; |
| 1100 | while (isspace(*s)) |
| 1101 | s++; |
| 1102 | } |
Andi Kleen | dc098b3 | 2013-04-20 11:02:29 -0700 | [diff] [blame] | 1103 | } |
| 1104 | |
Sukadev Bhattiprolu | c8d6828 | 2016-09-15 15:24:48 -0700 | [diff] [blame] | 1105 | void print_pmu_events(const char *event_glob, bool name_only, bool quiet_flag, |
| 1106 | bool long_desc) |
Andi Kleen | dc098b3 | 2013-04-20 11:02:29 -0700 | [diff] [blame] | 1107 | { |
| 1108 | struct perf_pmu *pmu; |
| 1109 | struct perf_pmu_alias *alias; |
| 1110 | char buf[1024]; |
| 1111 | int printed = 0; |
| 1112 | int len, j; |
Andi Kleen | dd5f103 | 2016-09-15 15:24:50 -0700 | [diff] [blame] | 1113 | struct sevent *aliases; |
Andi Kleen | 08e60ed | 2016-09-15 15:24:43 -0700 | [diff] [blame] | 1114 | int numdesc = 0; |
Andi Kleen | 61eb2eb | 2016-09-15 15:24:44 -0700 | [diff] [blame] | 1115 | int columns = pager_get_columns(); |
Andi Kleen | dd5f103 | 2016-09-15 15:24:50 -0700 | [diff] [blame] | 1116 | char *topic = NULL; |
Andi Kleen | dc098b3 | 2013-04-20 11:02:29 -0700 | [diff] [blame] | 1117 | |
| 1118 | pmu = NULL; |
| 1119 | len = 0; |
Adrian Hunter | 42634bc | 2014-10-23 13:45:10 +0300 | [diff] [blame] | 1120 | while ((pmu = perf_pmu__scan(pmu)) != NULL) { |
Andi Kleen | dc098b3 | 2013-04-20 11:02:29 -0700 | [diff] [blame] | 1121 | list_for_each_entry(alias, &pmu->aliases, list) |
| 1122 | len++; |
Adrian Hunter | 42634bc | 2014-10-23 13:45:10 +0300 | [diff] [blame] | 1123 | if (pmu->selectable) |
| 1124 | len++; |
| 1125 | } |
Andi Kleen | dd5f103 | 2016-09-15 15:24:50 -0700 | [diff] [blame] | 1126 | aliases = zalloc(sizeof(struct sevent) * len); |
Andi Kleen | dc098b3 | 2013-04-20 11:02:29 -0700 | [diff] [blame] | 1127 | if (!aliases) |
Arnaldo Carvalho de Melo | 7e4772d | 2014-10-24 10:25:09 -0300 | [diff] [blame] | 1128 | goto out_enomem; |
Andi Kleen | dc098b3 | 2013-04-20 11:02:29 -0700 | [diff] [blame] | 1129 | pmu = NULL; |
| 1130 | j = 0; |
Adrian Hunter | 42634bc | 2014-10-23 13:45:10 +0300 | [diff] [blame] | 1131 | while ((pmu = perf_pmu__scan(pmu)) != NULL) { |
Andi Kleen | dc098b3 | 2013-04-20 11:02:29 -0700 | [diff] [blame] | 1132 | list_for_each_entry(alias, &pmu->aliases, list) { |
Andi Kleen | 08e60ed | 2016-09-15 15:24:43 -0700 | [diff] [blame] | 1133 | char *name = alias->desc ? alias->name : |
| 1134 | format_alias(buf, sizeof(buf), pmu, alias); |
Andi Kleen | dc098b3 | 2013-04-20 11:02:29 -0700 | [diff] [blame] | 1135 | bool is_cpu = !strcmp(pmu->name, "cpu"); |
| 1136 | |
| 1137 | if (event_glob != NULL && |
| 1138 | !(strglobmatch(name, event_glob) || |
| 1139 | (!is_cpu && strglobmatch(alias->name, |
| 1140 | event_glob)))) |
| 1141 | continue; |
Arnaldo Carvalho de Melo | 7e4772d | 2014-10-24 10:25:09 -0300 | [diff] [blame] | 1142 | |
Andi Kleen | 08e60ed | 2016-09-15 15:24:43 -0700 | [diff] [blame] | 1143 | if (is_cpu && !name_only && !alias->desc) |
Arnaldo Carvalho de Melo | 7e4772d | 2014-10-24 10:25:09 -0300 | [diff] [blame] | 1144 | name = format_alias_or(buf, sizeof(buf), pmu, alias); |
| 1145 | |
Andi Kleen | 08e60ed | 2016-09-15 15:24:43 -0700 | [diff] [blame] | 1146 | aliases[j].name = name; |
| 1147 | if (is_cpu && !name_only && !alias->desc) |
| 1148 | aliases[j].name = format_alias_or(buf, |
| 1149 | sizeof(buf), |
| 1150 | pmu, alias); |
| 1151 | aliases[j].name = strdup(aliases[j].name); |
| 1152 | if (!aliases[j].name) |
Arnaldo Carvalho de Melo | 7e4772d | 2014-10-24 10:25:09 -0300 | [diff] [blame] | 1153 | goto out_enomem; |
Andi Kleen | 08e60ed | 2016-09-15 15:24:43 -0700 | [diff] [blame] | 1154 | |
Sukadev Bhattiprolu | c8d6828 | 2016-09-15 15:24:48 -0700 | [diff] [blame] | 1155 | aliases[j].desc = long_desc ? alias->long_desc : |
| 1156 | alias->desc; |
Andi Kleen | dd5f103 | 2016-09-15 15:24:50 -0700 | [diff] [blame] | 1157 | aliases[j].topic = alias->topic; |
Andi Kleen | dc098b3 | 2013-04-20 11:02:29 -0700 | [diff] [blame] | 1158 | j++; |
| 1159 | } |
Arnaldo Carvalho de Melo | fa52cea | 2015-10-02 15:28:16 -0300 | [diff] [blame] | 1160 | if (pmu->selectable && |
| 1161 | (event_glob == NULL || strglobmatch(pmu->name, event_glob))) { |
Arnaldo Carvalho de Melo | 7e4772d | 2014-10-24 10:25:09 -0300 | [diff] [blame] | 1162 | char *s; |
| 1163 | if (asprintf(&s, "%s//", pmu->name) < 0) |
| 1164 | goto out_enomem; |
Andi Kleen | 08e60ed | 2016-09-15 15:24:43 -0700 | [diff] [blame] | 1165 | aliases[j].name = s; |
Adrian Hunter | 42634bc | 2014-10-23 13:45:10 +0300 | [diff] [blame] | 1166 | j++; |
| 1167 | } |
| 1168 | } |
Andi Kleen | dc098b3 | 2013-04-20 11:02:29 -0700 | [diff] [blame] | 1169 | len = j; |
Andi Kleen | dd5f103 | 2016-09-15 15:24:50 -0700 | [diff] [blame] | 1170 | qsort(aliases, len, sizeof(struct sevent), cmp_sevent); |
Andi Kleen | dc098b3 | 2013-04-20 11:02:29 -0700 | [diff] [blame] | 1171 | for (j = 0; j < len; j++) { |
| 1172 | if (name_only) { |
Andi Kleen | 08e60ed | 2016-09-15 15:24:43 -0700 | [diff] [blame] | 1173 | printf("%s ", aliases[j].name); |
Andi Kleen | dc098b3 | 2013-04-20 11:02:29 -0700 | [diff] [blame] | 1174 | continue; |
| 1175 | } |
Andi Kleen | 1c5f01f | 2016-09-15 15:24:45 -0700 | [diff] [blame] | 1176 | if (aliases[j].desc && !quiet_flag) { |
Andi Kleen | 08e60ed | 2016-09-15 15:24:43 -0700 | [diff] [blame] | 1177 | if (numdesc++ == 0) |
| 1178 | printf("\n"); |
Andi Kleen | dd5f103 | 2016-09-15 15:24:50 -0700 | [diff] [blame] | 1179 | if (aliases[j].topic && (!topic || |
| 1180 | strcmp(topic, aliases[j].topic))) { |
| 1181 | printf("%s%s:\n", topic ? "\n" : "", |
| 1182 | aliases[j].topic); |
| 1183 | topic = aliases[j].topic; |
| 1184 | } |
Andi Kleen | 08e60ed | 2016-09-15 15:24:43 -0700 | [diff] [blame] | 1185 | printf(" %-50s\n", aliases[j].name); |
| 1186 | printf("%*s", 8, "["); |
| 1187 | wordwrap(aliases[j].desc, 8, columns, 0); |
| 1188 | printf("]\n"); |
| 1189 | } else |
| 1190 | printf(" %-50s [Kernel PMU event]\n", aliases[j].name); |
Andi Kleen | dc098b3 | 2013-04-20 11:02:29 -0700 | [diff] [blame] | 1191 | printed++; |
| 1192 | } |
Arnaldo Carvalho de Melo | dfc431c | 2015-09-30 17:13:26 -0300 | [diff] [blame] | 1193 | if (printed && pager_in_use()) |
Andi Kleen | dc098b3 | 2013-04-20 11:02:29 -0700 | [diff] [blame] | 1194 | printf("\n"); |
Arnaldo Carvalho de Melo | 7e4772d | 2014-10-24 10:25:09 -0300 | [diff] [blame] | 1195 | out_free: |
| 1196 | for (j = 0; j < len; j++) |
Andi Kleen | 08e60ed | 2016-09-15 15:24:43 -0700 | [diff] [blame] | 1197 | zfree(&aliases[j].name); |
Arnaldo Carvalho de Melo | 7e4772d | 2014-10-24 10:25:09 -0300 | [diff] [blame] | 1198 | zfree(&aliases); |
| 1199 | return; |
| 1200 | |
| 1201 | out_enomem: |
| 1202 | printf("FATAL: not enough memory to print PMU events\n"); |
| 1203 | if (aliases) |
| 1204 | goto out_free; |
Andi Kleen | dc098b3 | 2013-04-20 11:02:29 -0700 | [diff] [blame] | 1205 | } |
Andi Kleen | 4cabc3d | 2013-08-21 16:47:26 -0700 | [diff] [blame] | 1206 | |
| 1207 | bool pmu_have_event(const char *pname, const char *name) |
| 1208 | { |
| 1209 | struct perf_pmu *pmu; |
| 1210 | struct perf_pmu_alias *alias; |
| 1211 | |
| 1212 | pmu = NULL; |
| 1213 | while ((pmu = perf_pmu__scan(pmu)) != NULL) { |
| 1214 | if (strcmp(pname, pmu->name)) |
| 1215 | continue; |
| 1216 | list_for_each_entry(alias, &pmu->aliases, list) |
| 1217 | if (!strcmp(alias->name, name)) |
| 1218 | return true; |
| 1219 | } |
| 1220 | return false; |
| 1221 | } |
Adrian Hunter | 7d4bdab | 2014-07-31 09:00:50 +0300 | [diff] [blame] | 1222 | |
| 1223 | static FILE *perf_pmu__open_file(struct perf_pmu *pmu, const char *name) |
| 1224 | { |
| 1225 | struct stat st; |
| 1226 | char path[PATH_MAX]; |
| 1227 | const char *sysfs; |
| 1228 | |
| 1229 | sysfs = sysfs__mountpoint(); |
| 1230 | if (!sysfs) |
| 1231 | return NULL; |
| 1232 | |
| 1233 | snprintf(path, PATH_MAX, |
| 1234 | "%s" EVENT_SOURCE_DEVICE_PATH "%s/%s", sysfs, pmu->name, name); |
| 1235 | |
| 1236 | if (stat(path, &st) < 0) |
| 1237 | return NULL; |
| 1238 | |
| 1239 | return fopen(path, "r"); |
| 1240 | } |
| 1241 | |
| 1242 | int perf_pmu__scan_file(struct perf_pmu *pmu, const char *name, const char *fmt, |
| 1243 | ...) |
| 1244 | { |
| 1245 | va_list args; |
| 1246 | FILE *file; |
| 1247 | int ret = EOF; |
| 1248 | |
| 1249 | va_start(args, fmt); |
| 1250 | file = perf_pmu__open_file(pmu, name); |
| 1251 | if (file) { |
| 1252 | ret = vfscanf(file, fmt, args); |
| 1253 | fclose(file); |
| 1254 | } |
| 1255 | va_end(args); |
| 1256 | return ret; |
| 1257 | } |