ceph/src/spdk/dpdk/lib/librte_eal/common/eal_common_log.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2014 Intel Corporation
   3  */
   4
   5 #include <stdio.h>
   6 #include <stdint.h>
   7 #include <stdarg.h>
   8 #include <stdlib.h>
   9 #include <string.h>
  10 #include <errno.h>
  11 #include <regex.h>
  12 #include <fnmatch.h>
  13
  14 #include <rte_eal.h>
  15 #include <rte_log.h>
  16 #include <rte_per_lcore.h>
  17
  18 #include "eal_private.h"
  19
  20 /* global log structure */
  21 struct rte_logs rte_logs = {
  22         .type = ~0,
  23         .level = RTE_LOG_DEBUG,
  24         .file = NULL,
  25 };
  26
  27 struct rte_eal_opt_loglevel {
  28         /** Next list entry */
  29         TAILQ_ENTRY(rte_eal_opt_loglevel) next;
  30         /** Compiled regular expression obtained from the option */
  31         regex_t re_match;
  32         /** Glob match string option */
  33         char *pattern;
  34         /** Log level value obtained from the option */
  35         uint32_t level;
  36 };
  37
  38 TAILQ_HEAD(rte_eal_opt_loglevel_list, rte_eal_opt_loglevel);
  39
  40 /** List of valid EAL log level options */
  41 static struct rte_eal_opt_loglevel_list opt_loglevel_list =
  42         TAILQ_HEAD_INITIALIZER(opt_loglevel_list);
  43
  44 /* Stream to use for logging if rte_logs.file is NULL */
  45 static FILE *default_log_stream;
  46
  47 /**
  48  * This global structure stores some informations about the message
  49  * that is currently being processed by one lcore
  50  */
  51 struct log_cur_msg {
  52         uint32_t loglevel; /**< log level - see rte_log.h */
  53         uint32_t logtype;  /**< log type  - see rte_log.h */
  54 };
  55
  56 struct rte_log_dynamic_type {
  57         const char *name;
  58         uint32_t loglevel;
  59 };
  60
  61  /* per core log */
  62 static RTE_DEFINE_PER_LCORE(struct log_cur_msg, log_cur_msg);
  63
  64 /* default logs */
  65
  66 /* Change the stream that will be used by logging system */
  67 int
  68 rte_openlog_stream(FILE *f)
  69 {
  70         rte_logs.file = f;
  71         return 0;
  72 }
  73
  74 /* Set global log level */
  75 void
  76 rte_log_set_global_level(uint32_t level)
  77 {
  78         rte_logs.level = (uint32_t)level;
  79 }
  80
  81 /* Get global log level */
  82 uint32_t
  83 rte_log_get_global_level(void)
  84 {
  85         return rte_logs.level;
  86 }
  87
  88 int
  89 rte_log_get_level(uint32_t type)
  90 {
  91         if (type >= rte_logs.dynamic_types_len)
  92                 return -1;
  93
  94         return rte_logs.dynamic_types[type].loglevel;
  95 }
  96
  97 int
  98 rte_log_set_level(uint32_t type, uint32_t level)
  99 {
 100         if (type >= rte_logs.dynamic_types_len)
 101                 return -1;
 102         if (level > RTE_LOG_DEBUG)
 103                 return -1;
 104
 105         rte_logs.dynamic_types[type].loglevel = level;
 106
 107         return 0;
 108 }
 109
 110 /* set log level by regular expression */
 111 int
 112 rte_log_set_level_regexp(const char *regex, uint32_t level)
 113 {
 114         regex_t r;
 115         size_t i;
 116
 117         if (level > RTE_LOG_DEBUG)
 118                 return -1;
 119
 120         if (regcomp(&r, regex, 0) != 0)
 121                 return -1;
 122
 123         for (i = 0; i < rte_logs.dynamic_types_len; i++) {
 124                 if (rte_logs.dynamic_types[i].name == NULL)
 125                         continue;
 126                 if (regexec(&r, rte_logs.dynamic_types[i].name, 0,
 127                                 NULL, 0) == 0)
 128                         rte_logs.dynamic_types[i].loglevel = level;
 129         }
 130
 131         regfree(&r);
 132
 133         return 0;
 134 }
 135
 136 /*
 137  * Save the type string and the loglevel for later dynamic
 138  * logtypes which may register later.
 139  */
 140 static int rte_log_save_level(int priority,
 141                               const char *regex, const char *pattern)
 142 {
 143         struct rte_eal_opt_loglevel *opt_ll = NULL;
 144
 145         opt_ll = malloc(sizeof(*opt_ll));
 146         if (opt_ll == NULL)
 147                 goto fail;
 148
 149         opt_ll->level = priority;
 150
 151         if (regex) {
 152                 opt_ll->pattern = NULL;
 153                 if (regcomp(&opt_ll->re_match, regex, 0) != 0)
 154                         goto fail;
 155         } else if (pattern) {
 156                 opt_ll->pattern = strdup(pattern);
 157                 if (opt_ll->pattern == NULL)
 158                         goto fail;
 159         } else
 160                 goto fail;
 161
 162         TAILQ_INSERT_HEAD(&opt_loglevel_list, opt_ll, next);
 163         return 0;
 164 fail:
 165         free(opt_ll);
 166         return -1;
 167 }
 168
 169 int rte_log_save_regexp(const char *regex, int tmp)
 170 {
 171         return rte_log_save_level(tmp, regex, NULL);
 172 }
 173
 174 /* set log level based on glob (file match) pattern */
 175 int
 176 rte_log_set_level_pattern(const char *pattern, uint32_t level)
 177 {
 178         size_t i;
 179
 180         if (level > RTE_LOG_DEBUG)
 181                 return -1;
 182
 183         for (i = 0; i < rte_logs.dynamic_types_len; i++) {
 184                 if (rte_logs.dynamic_types[i].name == NULL)
 185                         continue;
 186
 187                 if (fnmatch(pattern, rte_logs.dynamic_types[i].name, 0) == 0)
 188                         rte_logs.dynamic_types[i].loglevel = level;
 189         }
 190
 191         return 0;
 192 }
 193
 194 int rte_log_save_pattern(const char *pattern, int priority)
 195 {
 196         return rte_log_save_level(priority, NULL, pattern);
 197 }
 198
 199 /* get the current loglevel for the message being processed */
 200 int rte_log_cur_msg_loglevel(void)
 201 {
 202         return RTE_PER_LCORE(log_cur_msg).loglevel;
 203 }
 204
 205 /* get the current logtype for the message being processed */
 206 int rte_log_cur_msg_logtype(void)
 207 {
 208         return RTE_PER_LCORE(log_cur_msg).logtype;
 209 }
 210
 211 static int
 212 rte_log_lookup(const char *name)
 213 {
 214         size_t i;
 215
 216         for (i = 0; i < rte_logs.dynamic_types_len; i++) {
 217                 if (rte_logs.dynamic_types[i].name == NULL)
 218                         continue;
 219                 if (strcmp(name, rte_logs.dynamic_types[i].name) == 0)
 220                         return i;
 221         }
 222
 223         return -1;
 224 }
 225
 226 /* register an extended log type, assuming table is large enough, and id
 227  * is not yet registered.
 228  */
 229 static int
 230 __rte_log_register(const char *name, int id)
 231 {
 232         char *dup_name = strdup(name);
 233
 234         if (dup_name == NULL)
 235                 return -ENOMEM;
 236
 237         rte_logs.dynamic_types[id].name = dup_name;
 238         rte_logs.dynamic_types[id].loglevel = RTE_LOG_INFO;
 239
 240         return id;
 241 }
 242
 243 /* register an extended log type */
 244 int
 245 rte_log_register(const char *name)
 246 {
 247         struct rte_log_dynamic_type *new_dynamic_types;
 248         int id, ret;
 249
 250         id = rte_log_lookup(name);
 251         if (id >= 0)
 252                 return id;
 253
 254         new_dynamic_types = realloc(rte_logs.dynamic_types,
 255                 sizeof(struct rte_log_dynamic_type) *
 256                 (rte_logs.dynamic_types_len + 1));
 257         if (new_dynamic_types == NULL)
 258                 return -ENOMEM;
 259         rte_logs.dynamic_types = new_dynamic_types;
 260
 261         ret = __rte_log_register(name, rte_logs.dynamic_types_len);
 262         if (ret < 0)
 263                 return ret;
 264
 265         rte_logs.dynamic_types_len++;
 266
 267         return ret;
 268 }
 269
 270 /* Register an extended log type and try to pick its level from EAL options */
 271 int __rte_experimental
 272 rte_log_register_type_and_pick_level(const char *name, uint32_t level_def)
 273 {
 274         struct rte_eal_opt_loglevel *opt_ll;
 275         uint32_t level = level_def;
 276         int type;
 277
 278         type = rte_log_register(name);
 279         if (type < 0)
 280                 return type;
 281
 282         TAILQ_FOREACH(opt_ll, &opt_loglevel_list, next) {
 283                 if (opt_ll->level > RTE_LOG_DEBUG)
 284                         continue;
 285
 286                 if (opt_ll->pattern) {
 287                         if (fnmatch(opt_ll->pattern, name, 0))
 288                                 level = opt_ll->level;
 289                 } else {
 290                         if (regexec(&opt_ll->re_match, name, 0, NULL, 0) == 0)
 291                                 level = opt_ll->level;
 292                 }
 293         }
 294
 295         rte_logs.dynamic_types[type].loglevel = level;
 296
 297         return type;
 298 }
 299
 300 struct logtype {
 301         uint32_t log_id;
 302         const char *logtype;
 303 };
 304
 305 static const struct logtype logtype_strings[] = {
 306         {RTE_LOGTYPE_EAL,        "lib.eal"},
 307         {RTE_LOGTYPE_MALLOC,     "lib.malloc"},
 308         {RTE_LOGTYPE_RING,       "lib.ring"},
 309         {RTE_LOGTYPE_MEMPOOL,    "lib.mempool"},
 310         {RTE_LOGTYPE_TIMER,      "lib.timer"},
 311         {RTE_LOGTYPE_PMD,        "pmd"},
 312         {RTE_LOGTYPE_HASH,       "lib.hash"},
 313         {RTE_LOGTYPE_LPM,        "lib.lpm"},
 314         {RTE_LOGTYPE_KNI,        "lib.kni"},
 315         {RTE_LOGTYPE_ACL,        "lib.acl"},
 316         {RTE_LOGTYPE_POWER,      "lib.power"},
 317         {RTE_LOGTYPE_METER,      "lib.meter"},
 318         {RTE_LOGTYPE_SCHED,      "lib.sched"},
 319         {RTE_LOGTYPE_PORT,       "lib.port"},
 320         {RTE_LOGTYPE_TABLE,      "lib.table"},
 321         {RTE_LOGTYPE_PIPELINE,   "lib.pipeline"},
 322         {RTE_LOGTYPE_MBUF,       "lib.mbuf"},
 323         {RTE_LOGTYPE_CRYPTODEV,  "lib.cryptodev"},
 324         {RTE_LOGTYPE_EFD,        "lib.efd"},
 325         {RTE_LOGTYPE_EVENTDEV,   "lib.eventdev"},
 326         {RTE_LOGTYPE_GSO,        "lib.gso"},
 327         {RTE_LOGTYPE_USER1,      "user1"},
 328         {RTE_LOGTYPE_USER2,      "user2"},
 329         {RTE_LOGTYPE_USER3,      "user3"},
 330         {RTE_LOGTYPE_USER4,      "user4"},
 331         {RTE_LOGTYPE_USER5,      "user5"},
 332         {RTE_LOGTYPE_USER6,      "user6"},
 333         {RTE_LOGTYPE_USER7,      "user7"},
 334         {RTE_LOGTYPE_USER8,      "user8"}
 335 };
 336
 337 /* Logging should be first initializer (before drivers and bus) */
 338 RTE_INIT_PRIO(rte_log_init, LOG)
 339 {
 340         uint32_t i;
 341
 342         rte_log_set_global_level(RTE_LOG_DEBUG);
 343
 344         rte_logs.dynamic_types = calloc(RTE_LOGTYPE_FIRST_EXT_ID,
 345                 sizeof(struct rte_log_dynamic_type));
 346         if (rte_logs.dynamic_types == NULL)
 347                 return;
 348
 349         /* register legacy log types */
 350         for (i = 0; i < RTE_DIM(logtype_strings); i++)
 351                 __rte_log_register(logtype_strings[i].logtype,
 352                                 logtype_strings[i].log_id);
 353
 354         rte_logs.dynamic_types_len = RTE_LOGTYPE_FIRST_EXT_ID;
 355 }
 356
 357 static const char *
 358 loglevel_to_string(uint32_t level)
 359 {
 360         switch (level) {
 361         case 0: return "disabled";
 362         case RTE_LOG_EMERG: return "emerg";
 363         case RTE_LOG_ALERT: return "alert";
 364         case RTE_LOG_CRIT: return "critical";
 365         case RTE_LOG_ERR: return "error";
 366         case RTE_LOG_WARNING: return "warning";
 367         case RTE_LOG_NOTICE: return "notice";
 368         case RTE_LOG_INFO: return "info";
 369         case RTE_LOG_DEBUG: return "debug";
 370         default: return "unknown";
 371         }
 372 }
 373
 374 /* dump global level and registered log types */
 375 void
 376 rte_log_dump(FILE *f)
 377 {
 378         size_t i;
 379
 380         fprintf(f, "global log level is %s\n",
 381                 loglevel_to_string(rte_log_get_global_level()));
 382
 383         for (i = 0; i < rte_logs.dynamic_types_len; i++) {
 384                 if (rte_logs.dynamic_types[i].name == NULL)
 385                         continue;
 386                 fprintf(f, "id %zu: %s, level is %s\n",
 387                         i, rte_logs.dynamic_types[i].name,
 388                         loglevel_to_string(rte_logs.dynamic_types[i].loglevel));
 389         }
 390 }
 391
 392 /*
 393  * Generates a log message The message will be sent in the stream
 394  * defined by the previous call to rte_openlog_stream().
 395  */
 396 int
 397 rte_vlog(uint32_t level, uint32_t logtype, const char *format, va_list ap)
 398 {
 399         int ret;
 400         FILE *f = rte_logs.file;
 401         if (f == NULL) {
 402                 f = default_log_stream;
 403                 if (f == NULL) {
 404                         /*
 405                          * Grab the current value of stderr here, rather than
 406                          * just initializing default_log_stream to stderr. This
 407                          * ensures that we will always use the current value
 408                          * of stderr, even if the application closes and
 409                          * reopens it.
 410                          */
 411                         f = stderr;
 412                 }
 413         }
 414
 415         if (level > rte_logs.level)
 416                 return 0;
 417         if (logtype >= rte_logs.dynamic_types_len)
 418                 return -1;
 419         if (level > rte_logs.dynamic_types[logtype].loglevel)
 420                 return 0;
 421
 422         /* save loglevel and logtype in a global per-lcore variable */
 423         RTE_PER_LCORE(log_cur_msg).loglevel = level;
 424         RTE_PER_LCORE(log_cur_msg).logtype = logtype;
 425
 426         ret = vfprintf(f, format, ap);
 427         fflush(f);
 428         return ret;
 429 }
 430
 431 /*
 432  * Generates a log message The message will be sent in the stream
 433  * defined by the previous call to rte_openlog_stream().
 434  * No need to check level here, done by rte_vlog().
 435  */
 436 int
 437 rte_log(uint32_t level, uint32_t logtype, const char *format, ...)
 438 {
 439         va_list ap;
 440         int ret;
 441
 442         va_start(ap, format);
 443         ret = rte_vlog(level, logtype, format, ap);
 444         va_end(ap);
 445         return ret;
 446 }
 447
 448 /*
 449  * Called by environment-specific initialization functions.
 450  */
 451 void
 452 eal_log_set_default(FILE *default_log)
 453 {
 454         default_log_stream = default_log;
 455
 456 #if RTE_LOG_DP_LEVEL >= RTE_LOG_DEBUG
 457         RTE_LOG(NOTICE, EAL,
 458                 "Debug dataplane logs available - lower performance\n");
 459 #endif
 460 }