| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | #include "ebpf.h" |
| 4 | #include "ebpf_shm.h" |
| 5 | #include "libbpf_api/ebpf_library.h" |
| 6 | |
| 7 | static char *shm_dimension_name[NETDATA_SHM_END] = {"get", "at", "dt", "ctl"}; |
| 8 | static netdata_syscall_stat_t shm_aggregated_data[NETDATA_SHM_END]; |
| 9 | static netdata_publish_syscall_t shm_publish_aggregated[NETDATA_SHM_END]; |
| 10 | |
| 11 | netdata_ebpf_shm_t *shm_vector = NULL; |
| 12 | |
| 13 | static netdata_idx_t shm_hash_values[NETDATA_SHM_END]; |
| 14 | static netdata_idx_t *shm_values = NULL; |
| 15 | |
| 16 | struct config shm_config = APPCONFIG_INITIALIZER; |
| 17 | |
| 18 | static ebpf_local_maps_t shm_maps[] = { |
| 19 | {.name = "tbl_pid_shm", |
| 20 | .internal_input = ND_EBPF_DEFAULT_PID_SIZE, |
| 21 | .user_input = 0, |
| 22 | .type = NETDATA_EBPF_MAP_RESIZABLE | NETDATA_EBPF_MAP_PID, |
| 23 | .map_fd = ND_EBPF_MAP_FD_NOT_INITIALIZED, |
| 24 | #ifdef LIBBPF_MAJOR_VERSION |
| 25 | .map_type = BPF_MAP_TYPE_PERCPU_HASH |
| 26 | #endif |
| 27 | }, |
| 28 | {.name = "shm_ctrl", |
| 29 | .internal_input = NETDATA_CONTROLLER_END, |
| 30 | .user_input = 0, |
| 31 | .type = NETDATA_EBPF_MAP_CONTROLLER, |
| 32 | .map_fd = ND_EBPF_MAP_FD_NOT_INITIALIZED, |
| 33 | #ifdef LIBBPF_MAJOR_VERSION |
| 34 | .map_type = BPF_MAP_TYPE_PERCPU_ARRAY |
| 35 | #endif |
| 36 | }, |
| 37 | {.name = "tbl_shm", |
| 38 | .internal_input = NETDATA_SHM_END, |
| 39 | .user_input = 0, |
| 40 | .type = NETDATA_EBPF_MAP_STATIC, |
| 41 | .map_fd = ND_EBPF_MAP_FD_NOT_INITIALIZED, |
| 42 | #ifdef LIBBPF_MAJOR_VERSION |
| 43 | .map_type = BPF_MAP_TYPE_PERCPU_ARRAY |
| 44 | #endif |
| 45 | }, |
| 46 | {.name = NULL, .internal_input = 0, .user_input = 0}}; |
| 47 | |
| 48 | netdata_ebpf_targets_t shm_targets[] = { |
| 49 | {.name = "shmget", .mode = EBPF_LOAD_TRAMPOLINE}, |
| 50 | {.name = "shmat", .mode = EBPF_LOAD_TRAMPOLINE}, |
| 51 | {.name = "shmdt", .mode = EBPF_LOAD_TRAMPOLINE}, |
| 52 | {.name = "shmctl", .mode = EBPF_LOAD_TRAMPOLINE}, |
| 53 | {.name = NULL, .mode = EBPF_LOAD_TRAMPOLINE}}; |
| 54 | |
| 55 | #ifdef NETDATA_DEV_MODE |
| 56 | int shm_disable_priority; |
| 57 | #endif |
| 58 | |
| 59 | struct netdata_static_thread ebpf_read_shm = { |
| 60 | .name = "EBPF_READ_SHM", |
| 61 | .config_section = NULL, |
| 62 | .config_name = NULL, |
| 63 | .env_name = NULL, |
| 64 | .enabled = 1, |
| 65 | .thread = NULL, |
| 66 | .init_routine = NULL, |
| 67 | .start_routine = NULL}; |
| 68 | |
| 69 | #ifdef LIBBPF_MAJOR_VERSION |
| 70 | /***************************************************************** |
| 71 | * |
| 72 | * BTF FUNCTIONS |
| 73 | * |
| 74 | *****************************************************************/ |
| 75 | |
| 76 | /* |
| 77 | * Disable tracepoint |
| 78 | * |
| 79 | * Disable all tracepoints to use exclusively another method. |
| 80 | * |
| 81 | * @param obj is the main structure for bpf objects. |
| 82 | */ |
| 83 | static void ebpf_shm_disable_tracepoint(struct shm_bpf *obj) |
| 84 | { |
| 85 | bpf_program__set_autoload(obj->progs.netdata_syscall_shmget, false); |
| 86 | bpf_program__set_autoload(obj->progs.netdata_syscall_shmat, false); |
| 87 | bpf_program__set_autoload(obj->progs.netdata_syscall_shmdt, false); |
| 88 | bpf_program__set_autoload(obj->progs.netdata_syscall_shmctl, false); |
| 89 | } |
| 90 | |
| 91 | /* |
| 92 | * Disable probe |
| 93 | * |
| 94 | * Disable all probes to use exclusively another method. |
| 95 | * |
| 96 | * @param obj is the main structure for bpf objects. |
| 97 | */ |
| 98 | static void ebpf_disable_probe(struct shm_bpf *obj) |
| 99 | { |
| 100 | bpf_program__set_autoload(obj->progs.netdata_shmget_probe, false); |
| 101 | bpf_program__set_autoload(obj->progs.netdata_shmat_probe, false); |
| 102 | bpf_program__set_autoload(obj->progs.netdata_shmdt_probe, false); |
| 103 | bpf_program__set_autoload(obj->progs.netdata_shmctl_probe, false); |
| 104 | } |
| 105 | |
| 106 | /* |
| 107 | * Disable trampoline |
| 108 | * |
| 109 | * Disable all trampoline to use exclusively another method. |
| 110 | * |
| 111 | * @param obj is the main structure for bpf objects. |
| 112 | */ |
| 113 | static void ebpf_disable_trampoline(struct shm_bpf *obj) |
| 114 | { |
| 115 | bpf_program__set_autoload(obj->progs.netdata_shmget_fentry, false); |
| 116 | bpf_program__set_autoload(obj->progs.netdata_shmat_fentry, false); |
| 117 | bpf_program__set_autoload(obj->progs.netdata_shmdt_fentry, false); |
| 118 | bpf_program__set_autoload(obj->progs.netdata_shmctl_fentry, false); |
| 119 | } |
| 120 | |
| 121 | /** |
| 122 | * Set trampoline target |
| 123 | * |
| 124 | * Set the targets we will monitor. |
| 125 | * |
| 126 | * @param obj is the main structure for bpf objects. |
| 127 | */ |
| 128 | static void ebpf_set_trampoline_target(struct shm_bpf *obj) |
| 129 | { |
| 130 | char syscall[NETDATA_EBPF_MAX_SYSCALL_LENGTH + 1]; |
| 131 | ebpf_select_host_prefix( |
| 132 | syscall, NETDATA_EBPF_MAX_SYSCALL_LENGTH, shm_targets[NETDATA_KEY_SHMGET_CALL].name, running_on_kernel); |
| 133 | |
| 134 | bpf_program__set_attach_target(obj->progs.netdata_shmget_fentry, 0, syscall); |
| 135 | |
| 136 | ebpf_select_host_prefix( |
| 137 | syscall, NETDATA_EBPF_MAX_SYSCALL_LENGTH, shm_targets[NETDATA_KEY_SHMAT_CALL].name, running_on_kernel); |
| 138 | bpf_program__set_attach_target(obj->progs.netdata_shmat_fentry, 0, syscall); |
| 139 | |
| 140 | ebpf_select_host_prefix( |
| 141 | syscall, NETDATA_EBPF_MAX_SYSCALL_LENGTH, shm_targets[NETDATA_KEY_SHMDT_CALL].name, running_on_kernel); |
| 142 | bpf_program__set_attach_target(obj->progs.netdata_shmdt_fentry, 0, syscall); |
| 143 | |
| 144 | ebpf_select_host_prefix( |
| 145 | syscall, NETDATA_EBPF_MAX_SYSCALL_LENGTH, shm_targets[NETDATA_KEY_SHMCTL_CALL].name, running_on_kernel); |
| 146 | bpf_program__set_attach_target(obj->progs.netdata_shmctl_fentry, 0, syscall); |
| 147 | } |
| 148 | |
| 149 | /** |
| 150 | * SHM Attach Probe |
| 151 | * |
| 152 | * Attach probes to target |
| 153 | * |
| 154 | * @param obj is the main structure for bpf objects. |
| 155 | * |
| 156 | * @return It returns 0 on success and -1 otherwise. |
| 157 | */ |
| 158 | static int ebpf_shm_attach_probe(struct shm_bpf *obj) |
| 159 | { |
| 160 | char syscall[NETDATA_EBPF_MAX_SYSCALL_LENGTH + 1]; |
| 161 | ebpf_select_host_prefix( |
| 162 | syscall, NETDATA_EBPF_MAX_SYSCALL_LENGTH, shm_targets[NETDATA_KEY_SHMGET_CALL].name, running_on_kernel); |
| 163 | |
| 164 | obj->links.netdata_shmget_probe = bpf_program__attach_kprobe(obj->progs.netdata_shmget_probe, false, syscall); |
| 165 | long ret = libbpf_get_error(obj->links.netdata_shmget_probe); |
| 166 | if (ret) |
| 167 | return -1; |
| 168 | |
| 169 | ebpf_select_host_prefix( |
| 170 | syscall, NETDATA_EBPF_MAX_SYSCALL_LENGTH, shm_targets[NETDATA_KEY_SHMAT_CALL].name, running_on_kernel); |
| 171 | obj->links.netdata_shmat_probe = bpf_program__attach_kprobe(obj->progs.netdata_shmat_probe, false, syscall); |
| 172 | ret = libbpf_get_error(obj->links.netdata_shmat_probe); |
| 173 | if (ret) |
| 174 | return -1; |
| 175 | |
| 176 | ebpf_select_host_prefix( |
| 177 | syscall, NETDATA_EBPF_MAX_SYSCALL_LENGTH, shm_targets[NETDATA_KEY_SHMDT_CALL].name, running_on_kernel); |
| 178 | obj->links.netdata_shmdt_probe = bpf_program__attach_kprobe(obj->progs.netdata_shmdt_probe, false, syscall); |
| 179 | ret = libbpf_get_error(obj->links.netdata_shmdt_probe); |
| 180 | if (ret) |
| 181 | return -1; |
| 182 | |
| 183 | ebpf_select_host_prefix( |
| 184 | syscall, NETDATA_EBPF_MAX_SYSCALL_LENGTH, shm_targets[NETDATA_KEY_SHMCTL_CALL].name, running_on_kernel); |
| 185 | obj->links.netdata_shmctl_probe = bpf_program__attach_kprobe(obj->progs.netdata_shmctl_probe, false, syscall); |
| 186 | ret = libbpf_get_error(obj->links.netdata_shmctl_probe); |
| 187 | if (ret) |
| 188 | return -1; |
| 189 | |
| 190 | return 0; |
| 191 | } |
| 192 | |
| 193 | /** |
| 194 | * Set hash tables |
| 195 | * |
| 196 | * Set the values for maps according the value given by kernel. |
| 197 | */ |
| 198 | static void ebpf_shm_set_hash_tables(struct shm_bpf *obj) |
| 199 | { |
| 200 | shm_maps[NETDATA_PID_SHM_TABLE].map_fd = bpf_map__fd(obj->maps.tbl_pid_shm); |
| 201 | shm_maps[NETDATA_SHM_CONTROLLER].map_fd = bpf_map__fd(obj->maps.shm_ctrl); |
| 202 | shm_maps[NETDATA_SHM_GLOBAL_TABLE].map_fd = bpf_map__fd(obj->maps.tbl_shm); |
| 203 | } |
| 204 | |
| 205 | /** |
| 206 | * Adjust Map Size |
| 207 | * |
| 208 | * Resize maps according input from users. |
| 209 | * |
| 210 | * @param obj is the main structure for bpf objects. |
| 211 | * @param em structure with configuration |
| 212 | */ |
| 213 | static void ebpf_shm_adjust_map(struct shm_bpf *obj, ebpf_module_t *em) |
| 214 | { |
| 215 | ebpf_update_map_size( |
| 216 | obj->maps.tbl_pid_shm, &shm_maps[NETDATA_PID_SHM_TABLE], em, bpf_map__name(obj->maps.tbl_pid_shm)); |
| 217 | |
| 218 | ebpf_update_map_type(obj->maps.tbl_shm, &shm_maps[NETDATA_SHM_GLOBAL_TABLE]); |
| 219 | ebpf_update_map_type(obj->maps.tbl_pid_shm, &shm_maps[NETDATA_PID_SHM_TABLE]); |
| 220 | ebpf_update_map_type(obj->maps.shm_ctrl, &shm_maps[NETDATA_SHM_CONTROLLER]); |
| 221 | } |
| 222 | |
| 223 | /** |
| 224 | * Load and attach |
| 225 | * |
| 226 | * Load and attach the eBPF code in kernel. |
| 227 | * |
| 228 | * @param obj is the main structure for bpf objects. |
| 229 | * @param em structure with configuration |
| 230 | * |
| 231 | * @return it returns 0 on success and -1 otherwise |
| 232 | */ |
| 233 | static inline int ebpf_shm_load_and_attach(struct shm_bpf *obj, ebpf_module_t *em) |
| 234 | { |
| 235 | netdata_ebpf_targets_t *shmt = em->targets; |
| 236 | netdata_ebpf_program_loaded_t mode = shmt[NETDATA_KEY_SHMGET_CALL].mode; |
| 237 | |
| 238 | // We are testing only one, because all will have the same behavior |
| 239 | if (mode == EBPF_LOAD_TRAMPOLINE) { |
| 240 | ebpf_shm_disable_tracepoint(obj); |
| 241 | ebpf_disable_probe(obj); |
| 242 | |
| 243 | ebpf_set_trampoline_target(obj); |
| 244 | } else if (mode == EBPF_LOAD_PROBE || mode == EBPF_LOAD_RETPROBE) { |
| 245 | ebpf_shm_disable_tracepoint(obj); |
| 246 | ebpf_disable_trampoline(obj); |
| 247 | } else { |
| 248 | ebpf_disable_probe(obj); |
| 249 | ebpf_disable_trampoline(obj); |
| 250 | } |
| 251 | |
| 252 | ebpf_shm_adjust_map(obj, em); |
| 253 | |
| 254 | int ret = shm_bpf__load(obj); |
| 255 | if (!ret) { |
| 256 | if (mode != EBPF_LOAD_PROBE && mode != EBPF_LOAD_RETPROBE) |
| 257 | shm_bpf__attach(obj); |
| 258 | else |
| 259 | ret = ebpf_shm_attach_probe(obj); |
| 260 | |
| 261 | if (!ret) |
| 262 | ebpf_shm_set_hash_tables(obj); |
| 263 | } |
| 264 | |
| 265 | return ret; |
| 266 | } |
| 267 | #endif |
| 268 | /***************************************************************** |
| 269 | * FUNCTIONS TO CLOSE THE THREAD |
| 270 | *****************************************************************/ |
| 271 | |
| 272 | static void ebpf_obsolete_specific_shm_charts(char *type, int update_every); |
| 273 | |
| 274 | /** |
| 275 | * Obsolete services |
| 276 | * |
| 277 | * Obsolete all service charts created |
| 278 | * |
| 279 | * @param em a pointer to `struct ebpf_module` |
| 280 | */ |
| 281 | static void ebpf_obsolete_shm_services(ebpf_module_t *em, char *id) |
| 282 | { |
| 283 | ebpf_write_chart_obsolete( |
| 284 | id, |
| 285 | NETDATA_SHMGET_CHART, |
| 286 | "", |
| 287 | "Calls to syscall shmget(2).", |
| 288 | EBPF_COMMON_UNITS_CALLS_PER_SEC, |
| 289 | NETDATA_APPS_IPC_SHM_GROUP, |
| 290 | NETDATA_EBPF_CHART_TYPE_STACKED, |
| 291 | NETDATA_SYSTEMD_SHM_GET_CONTEXT, |
| 292 | 20191, |
| 293 | em->update_every); |
| 294 | |
| 295 | ebpf_write_chart_obsolete( |
| 296 | id, |
| 297 | NETDATA_SHMAT_CHART, |
| 298 | "", |
| 299 | "Calls to syscall shmat(2).", |
| 300 | EBPF_COMMON_UNITS_CALLS_PER_SEC, |
| 301 | NETDATA_APPS_IPC_SHM_GROUP, |
| 302 | NETDATA_EBPF_CHART_TYPE_STACKED, |
| 303 | NETDATA_SYSTEMD_SHM_AT_CONTEXT, |
| 304 | 20192, |
| 305 | em->update_every); |
| 306 | |
| 307 | ebpf_write_chart_obsolete( |
| 308 | id, |
| 309 | NETDATA_SHMDT_CHART, |
| 310 | "", |
| 311 | "Calls to syscall shmdt(2).", |
| 312 | EBPF_COMMON_UNITS_CALLS_PER_SEC, |
| 313 | NETDATA_APPS_IPC_SHM_GROUP, |
| 314 | NETDATA_EBPF_CHART_TYPE_STACKED, |
| 315 | NETDATA_SYSTEMD_SHM_DT_CONTEXT, |
| 316 | 20193, |
| 317 | em->update_every); |
| 318 | |
| 319 | ebpf_write_chart_obsolete( |
| 320 | id, |
| 321 | NETDATA_SHMCTL_CHART, |
| 322 | "", |
| 323 | "Calls to syscall shmctl(2).", |
| 324 | EBPF_COMMON_UNITS_CALLS_PER_SEC, |
| 325 | NETDATA_APPS_IPC_SHM_GROUP, |
| 326 | NETDATA_EBPF_CHART_TYPE_STACKED, |
| 327 | NETDATA_SYSTEMD_SHM_CTL_CONTEXT, |
| 328 | 20194, |
| 329 | em->update_every); |
| 330 | } |
| 331 | |
| 332 | /** |
| 333 | * Obsolete cgroup chart |
| 334 | * |
| 335 | * Send obsolete for all charts created before to close. |
| 336 | * |
| 337 | * @param em a pointer to `struct ebpf_module` |
| 338 | */ |
| 339 | static inline void ebpf_obsolete_shm_cgroup_charts(ebpf_module_t *em) |
| 340 | { |
| 341 | netdata_mutex_lock(&mutex_cgroup_shm); |
| 342 | |
| 343 | ebpf_cgroup_target_t *ect; |
| 344 | for (ect = ebpf_cgroup_pids; ect; ect = ect->next) { |
| 345 | if (ect->systemd) { |
| 346 | ebpf_obsolete_shm_services(em, ect->name); |
| 347 | |
| 348 | continue; |
| 349 | } |
| 350 | |
| 351 | ebpf_obsolete_specific_shm_charts(ect->name, em->update_every); |
| 352 | } |
| 353 | netdata_mutex_unlock(&mutex_cgroup_shm); |
| 354 | } |
| 355 | |
| 356 | /** |
| 357 | * Obsolette apps charts |
| 358 | * |
| 359 | * Obsolete apps charts. |
| 360 | * |
| 361 | * @param em a pointer to the structure with the default values. |
| 362 | */ |
| 363 | void ebpf_obsolete_shm_apps_charts(struct ebpf_module *em) |
| 364 | { |
| 365 | struct ebpf_target *w; |
| 366 | int update_every = em->update_every; |
| 367 | netdata_mutex_lock(&collect_data_mutex); |
| 368 | for (w = apps_groups_root_target; w; w = w->next) { |
| 369 | if (unlikely(!(w->charts_created & (1 << EBPF_MODULE_SHM_IDX)))) |
| 370 | continue; |
| 371 | |
| 372 | ebpf_write_chart_obsolete( |
| 373 | NETDATA_APP_FAMILY, |
| 374 | w->clean_name, |
| 375 | "_ebpf_shmget_call", |
| 376 | "Calls to syscall shmget(2).", |
| 377 | EBPF_COMMON_UNITS_CALLS_PER_SEC, |
| 378 | NETDATA_APPS_IPC_SHM_GROUP, |
| 379 | NETDATA_EBPF_CHART_TYPE_STACKED, |
| 380 | "app.ebpf_shmget_call", |
| 381 | 20191, |
| 382 | update_every); |
| 383 | |
| 384 | ebpf_write_chart_obsolete( |
| 385 | NETDATA_APP_FAMILY, |
| 386 | w->clean_name, |
| 387 | "_ebpf_shmat_call", |
| 388 | "Calls to syscall shmat(2).", |
| 389 | EBPF_COMMON_UNITS_CALLS_PER_SEC, |
| 390 | NETDATA_APPS_IPC_SHM_GROUP, |
| 391 | NETDATA_EBPF_CHART_TYPE_STACKED, |
| 392 | "app.ebpf_shmat_call", |
| 393 | 20192, |
| 394 | update_every); |
| 395 | |
| 396 | ebpf_write_chart_obsolete( |
| 397 | NETDATA_APP_FAMILY, |
| 398 | w->clean_name, |
| 399 | "_ebpf_shmdt_call", |
| 400 | "Calls to syscall shmdt(2).", |
| 401 | EBPF_COMMON_UNITS_CALLS_PER_SEC, |
| 402 | NETDATA_APPS_IPC_SHM_GROUP, |
| 403 | NETDATA_EBPF_CHART_TYPE_STACKED, |
| 404 | "app.ebpf_shmdt_call", |
| 405 | 20193, |
| 406 | update_every); |
| 407 | |
| 408 | ebpf_write_chart_obsolete( |
| 409 | NETDATA_APP_FAMILY, |
| 410 | w->clean_name, |
| 411 | "_ebpf_shmctl_call", |
| 412 | "Calls to syscall shmctl(2).", |
| 413 | EBPF_COMMON_UNITS_CALLS_PER_SEC, |
| 414 | NETDATA_APPS_IPC_SHM_GROUP, |
| 415 | NETDATA_EBPF_CHART_TYPE_STACKED, |
| 416 | "app.ebpf_shmctl_call", |
| 417 | 20194, |
| 418 | update_every); |
| 419 | |
| 420 | w->charts_created &= ~(1 << EBPF_MODULE_SHM_IDX); |
| 421 | } |
| 422 | netdata_mutex_unlock(&collect_data_mutex); |
| 423 | } |
| 424 | |
| 425 | /** |
| 426 | * Obsolete global |
| 427 | * |
| 428 | * Obsolete global charts created by thread. |
| 429 | * |
| 430 | * @param em a pointer to `struct ebpf_module` |
| 431 | */ |
| 432 | static void ebpf_obsolete_shm_global(ebpf_module_t *em) |
| 433 | { |
| 434 | ebpf_write_chart_obsolete( |
| 435 | NETDATA_EBPF_SYSTEM_GROUP, |
| 436 | NETDATA_SHM_GLOBAL_CHART, |
| 437 | "", |
| 438 | "Calls to shared memory system calls", |
| 439 | EBPF_COMMON_UNITS_CALLS_PER_SEC, |
| 440 | NETDATA_SYSTEM_IPC_SHM_SUBMENU, |
| 441 | NETDATA_EBPF_CHART_TYPE_LINE, |
| 442 | "system.shared_memory_calls", |
| 443 | NETDATA_CHART_PRIO_SYSTEM_IPC_SHARED_MEM_CALLS, |
| 444 | em->update_every); |
| 445 | } |
| 446 | |
| 447 | /** |
| 448 | * SHM Exit |
| 449 | * |
| 450 | * Cancel child thread. |
| 451 | * |
| 452 | * @param ptr thread data. |
| 453 | */ |
| 454 | void ebpf_shm_unload_bpf(ebpf_module_t *em) |
| 455 | { |
| 456 | #ifdef LIBBPF_MAJOR_VERSION |
| 457 | if (shm_bpf_obj) { |
| 458 | shm_bpf__destroy(shm_bpf_obj); |
| 459 | shm_bpf_obj = NULL; |
| 460 | } |
| 461 | #endif |
| 462 | if ((em->load & EBPF_LOAD_LEGACY) && em->probe_links) { |
| 463 | ebpf_unload_legacy_code(em->objects, em->probe_links); |
| 464 | em->objects = NULL; |
| 465 | em->probe_links = NULL; |
| 466 | } |
| 467 | } |
| 468 | |
| 469 | static void ebpf_shm_exit(void *pptr) |
| 470 | { |
| 471 | ebpf_module_t *em = CLEANUP_FUNCTION_GET_PTR(pptr); |
| 472 | if (!em) |
| 473 | return; |
| 474 | |
| 475 | netdata_mutex_lock(&lock); |
| 476 | collect_pids &= ~(1 << EBPF_MODULE_SHM_IDX); |
| 477 | netdata_mutex_unlock(&lock); |
| 478 | |
| 479 | if (ebpf_read_shm.thread) { |
| 480 | nd_thread_signal_cancel(ebpf_read_shm.thread); |
| 481 | nd_thread_join(ebpf_read_shm.thread); |
| 482 | } |
| 483 | |
| 484 | // Drop this module's bits from the shared PID pool so its slots don't |
| 485 | // stay pinned if the plugin keeps running after the module stops. |
| 486 | if (integration_shm && ebpf_shm_sem_wait_or_stop(shm_mutex_ebpf_integration)) { |
| 487 | netdata_ebpf_sweep_shm_for_module_unsafe(NETDATA_EBPF_PIDS_SHM_IDX); |
| 488 | sem_post(shm_mutex_ebpf_integration); |
| 489 | } |
| 490 | |
| 491 | if (ebpf_module_enabled_get(em) == NETDATA_THREAD_EBPF_FUNCTION_RUNNING && !ebpf_plugin_stop()) { |
| 492 | netdata_mutex_lock(&lock); |
| 493 | if (em->cgroup_charts) { |
| 494 | ebpf_obsolete_shm_cgroup_charts(em); |
| 495 | fflush(stdout); |
| 496 | } |
| 497 | |
| 498 | if (em->apps_charts & NETDATA_EBPF_APPS_FLAG_CHART_CREATED) { |
| 499 | ebpf_obsolete_shm_apps_charts(em); |
| 500 | } |
| 501 | |
| 502 | ebpf_obsolete_shm_global(em); |
| 503 | |
| 504 | fflush(stdout); |
| 505 | netdata_mutex_unlock(&lock); |
| 506 | } |
| 507 | |
| 508 | if (!ebpf_plugin_stop() && em->functions.bpf_unload) |
| 509 | em->functions.bpf_unload(em); |
| 510 | |
| 511 | netdata_mutex_lock(&ebpf_exit_cleanup); |
| 512 | ebpf_module_enabled_set(em, NETDATA_THREAD_EBPF_STOPPED); |
| 513 | netdata_mutex_unlock(&ebpf_exit_cleanup); |
| 514 | } |
| 515 | |
| 516 | /***************************************************************** |
| 517 | * COLLECTOR THREAD |
| 518 | *****************************************************************/ |
| 519 | |
| 520 | /** |
| 521 | * Apps Accumulator |
| 522 | * |
| 523 | * Sum all values read from kernel and store in the first address. |
| 524 | * |
| 525 | * @param out the vector with read values. |
| 526 | * @param maps_per_core do I need to read all cores? |
| 527 | */ |
| 528 | static void shm_apps_accumulator(netdata_ebpf_shm_t *out, int maps_per_core) |
| 529 | { |
| 530 | int i, end = (maps_per_core) ? ebpf_nprocs : 1; |
| 531 | netdata_ebpf_shm_t *total = &out[0]; |
| 532 | for (i = 1; i < end; i++) { |
| 533 | if (ebpf_plugin_stop()) |
| 534 | break; |
| 535 | |
| 536 | netdata_ebpf_shm_t *w = &out[i]; |
| 537 | total->get += w->get; |
| 538 | total->at += w->at; |
| 539 | total->dt += w->dt; |
| 540 | total->ctl += w->ctl; |
| 541 | |
| 542 | if (!total->name[0] && w->name[0]) |
| 543 | strncpyz(total->name, w->name, sizeof(total->name) - 1); |
| 544 | } |
| 545 | } |
| 546 | |
| 547 | /** |
| 548 | * Update cgroup |
| 549 | * |
| 550 | * Update cgroup data based in |
| 551 | * |
| 552 | * @param maps_per_core do I need to read all cores? |
| 553 | */ |
| 554 | static void ebpf_update_shm_cgroup(void) |
| 555 | { |
| 556 | ebpf_cgroup_target_t *ect; |
| 557 | |
| 558 | memset(shm_vector, 0, sizeof(netdata_ebpf_shm_t)); |
| 559 | |
| 560 | netdata_mutex_lock(&mutex_cgroup_shm); |
| 561 | for (ect = ebpf_cgroup_pids; ect; ect = ect->next) { |
| 562 | if (ebpf_plugin_stop()) |
| 563 | break; |
| 564 | |
| 565 | struct pid_on_target2 *pids; |
| 566 | for (pids = ect->pids; pids; pids = pids->next) { |
| 567 | uint32_t pid = pids->pid; |
| 568 | netdata_publish_shm_t *out = &pids->shm; |
| 569 | netdata_ebpf_pid_stats_t *local_pid = netdata_ebpf_lookup_shm_pointer_unsafe(pid); |
| 570 | if (!local_pid || !(local_pid->threads & (1U << (NETDATA_EBPF_PIDS_SHM_IDX << 1)))) |
| 571 | continue; |
| 572 | |
| 573 | netdata_publish_shm_t *in = &local_pid->shm; |
| 574 | |
| 575 | memcpy(out, in, sizeof(netdata_publish_shm_t)); |
| 576 | } |
| 577 | } |
| 578 | netdata_mutex_unlock(&mutex_cgroup_shm); |
| 579 | } |
| 580 | |
| 581 | /** |
| 582 | * Read APPS table |
| 583 | * |
| 584 | * Read the apps table and store data inside the structure. |
| 585 | * |
| 586 | * @param maps_per_core do I need to read all cores? |
| 587 | */ |
| 588 | static void ebpf_read_shm_apps_table(int maps_per_core) |
| 589 | { |
| 590 | netdata_ebpf_shm_t *cv = shm_vector; |
| 591 | int fd = shm_maps[NETDATA_PID_SHM_TABLE].map_fd; |
| 592 | size_t length = sizeof(netdata_ebpf_shm_t); |
| 593 | if (maps_per_core) |
| 594 | length *= ebpf_nprocs; |
| 595 | |
| 596 | uint32_t key = 0, next_key = 0; |
| 597 | while (bpf_map_get_next_key(fd, &key, &next_key) == 0) { |
| 598 | if (ebpf_plugin_stop()) |
| 599 | break; |
| 600 | |
| 601 | if (bpf_map_lookup_elem(fd, &key, cv)) { |
| 602 | goto end_shm_loop; |
| 603 | } |
| 604 | |
| 605 | shm_apps_accumulator(cv, maps_per_core); |
| 606 | |
| 607 | netdata_ebpf_pid_stats_t *local_pid = netdata_ebpf_get_shm_pointer_unsafe(key, NETDATA_EBPF_PIDS_SHM_IDX); |
| 608 | if (!local_pid) |
| 609 | goto end_shm_loop; |
| 610 | netdata_publish_shm_t *publish = &local_pid->shm; |
| 611 | |
| 612 | if (!publish->ct || publish->ct != cv->ct) { |
| 613 | memcpy(publish, &cv[0], sizeof(netdata_publish_shm_t)); |
| 614 | } else { |
| 615 | if (kill((pid_t)key, 0) == -1 && errno == ESRCH) { |
| 616 | if (netdata_ebpf_reset_shm_pointer_unsafe(fd, key, NETDATA_EBPF_PIDS_SHM_IDX)) |
| 617 | memset(publish, 0, sizeof(*publish)); |
| 618 | } |
| 619 | } |
| 620 | |
| 621 | end_shm_loop: |
| 622 | // now that we've consumed the value, zero it out in the map. |
| 623 | memset(cv, 0, length); |
| 624 | bpf_map_update_elem(fd, &key, cv, BPF_EXIST); |
| 625 | |
| 626 | key = next_key; |
| 627 | } |
| 628 | } |
| 629 | |
| 630 | /** |
| 631 | * Send global charts to netdata agent. |
| 632 | */ |
| 633 | static void shm_send_global(void) |
| 634 | { |
| 635 | ebpf_write_begin_chart(NETDATA_EBPF_SYSTEM_GROUP, NETDATA_SHM_GLOBAL_CHART, ""); |
| 636 | write_chart_dimension( |
| 637 | shm_publish_aggregated[NETDATA_KEY_SHMGET_CALL].dimension, (long long)shm_hash_values[NETDATA_KEY_SHMGET_CALL]); |
| 638 | write_chart_dimension( |
| 639 | shm_publish_aggregated[NETDATA_KEY_SHMAT_CALL].dimension, (long long)shm_hash_values[NETDATA_KEY_SHMAT_CALL]); |
| 640 | write_chart_dimension( |
| 641 | shm_publish_aggregated[NETDATA_KEY_SHMDT_CALL].dimension, (long long)shm_hash_values[NETDATA_KEY_SHMDT_CALL]); |
| 642 | write_chart_dimension( |
| 643 | shm_publish_aggregated[NETDATA_KEY_SHMCTL_CALL].dimension, (long long)shm_hash_values[NETDATA_KEY_SHMCTL_CALL]); |
| 644 | ebpf_write_end_chart(); |
| 645 | } |
| 646 | |
| 647 | /** |
| 648 | * Read global counter |
| 649 | * |
| 650 | * Read the table with number of calls for all functions |
| 651 | * |
| 652 | * @param stats vector used to read data from control table. |
| 653 | * @param maps_per_core do I need to read all cores? |
| 654 | */ |
| 655 | static void ebpf_shm_read_global_table(netdata_idx_t *stats, int maps_per_core) |
| 656 | { |
| 657 | ebpf_read_global_table_stats( |
| 658 | shm_hash_values, |
| 659 | shm_values, |
| 660 | shm_maps[NETDATA_SHM_GLOBAL_TABLE].map_fd, |
| 661 | maps_per_core, |
| 662 | NETDATA_KEY_SHMGET_CALL, |
| 663 | NETDATA_SHM_END); |
| 664 | |
| 665 | ebpf_read_global_table_stats( |
| 666 | stats, |
| 667 | shm_values, |
| 668 | shm_maps[NETDATA_SHM_CONTROLLER].map_fd, |
| 669 | maps_per_core, |
| 670 | NETDATA_CONTROLLER_PID_TABLE_ADD, |
| 671 | NETDATA_CONTROLLER_END); |
| 672 | } |
| 673 | |
| 674 | /** |
| 675 | * Sum values for all targets. |
| 676 | */ |
| 677 | static void ebpf_shm_sum_pids(netdata_publish_shm_t *shm, struct ebpf_pid_on_target *root) |
| 678 | { |
| 679 | memset(shm, 0, sizeof(netdata_publish_shm_t)); |
| 680 | for (; root; root = root->next) { |
| 681 | uint32_t pid = root->pid; |
| 682 | netdata_ebpf_pid_stats_t *local_pid = netdata_ebpf_lookup_shm_pointer_unsafe(pid); |
| 683 | if (!local_pid || !(local_pid->threads & (1U << (NETDATA_EBPF_PIDS_SHM_IDX << 1)))) |
| 684 | continue; |
| 685 | |
| 686 | netdata_publish_shm_t *w = &local_pid->shm; |
| 687 | |
| 688 | shm->get += w->get; |
| 689 | shm->at += w->at; |
| 690 | shm->dt += w->dt; |
| 691 | shm->ctl += w->ctl; |
| 692 | } |
| 693 | } |
| 694 | |
| 695 | /** |
| 696 | * Send data to Netdata calling auxiliary functions. |
| 697 | * |
| 698 | * @param root the target list. |
| 699 | */ |
| 700 | void ebpf_shm_send_apps_data(struct ebpf_target *root) |
| 701 | { |
| 702 | struct ebpf_target *w; |
| 703 | |
| 704 | netdata_mutex_lock(&collect_data_mutex); |
| 705 | for (w = root; w; w = w->next) { |
| 706 | if (ebpf_plugin_stop()) |
| 707 | break; |
| 708 | |
| 709 | if (unlikely(!(w->charts_created & (1 << EBPF_MODULE_SHM_IDX)))) |
| 710 | continue; |
| 711 | |
| 712 | ebpf_write_begin_chart(NETDATA_APP_FAMILY, w->clean_name, "_ebpf_shmget_call"); |
| 713 | write_chart_dimension("calls", (long long)w->shm.get); |
| 714 | ebpf_write_end_chart(); |
| 715 | |
| 716 | ebpf_write_begin_chart(NETDATA_APP_FAMILY, w->clean_name, "_ebpf_shmat_call"); |
| 717 | write_chart_dimension("calls", (long long)w->shm.at); |
| 718 | ebpf_write_end_chart(); |
| 719 | |
| 720 | ebpf_write_begin_chart(NETDATA_APP_FAMILY, w->clean_name, "_ebpf_shmdt_call"); |
| 721 | write_chart_dimension("calls", (long long)w->shm.dt); |
| 722 | ebpf_write_end_chart(); |
| 723 | |
| 724 | ebpf_write_begin_chart(NETDATA_APP_FAMILY, w->clean_name, "_ebpf_shmctl_call"); |
| 725 | write_chart_dimension("calls", (long long)w->shm.ctl); |
| 726 | ebpf_write_end_chart(); |
| 727 | } |
| 728 | netdata_mutex_unlock(&collect_data_mutex); |
| 729 | } |
| 730 | |
| 731 | /** |
| 732 | * Sum values for all targets. |
| 733 | */ |
| 734 | static void ebpf_shm_sum_cgroup_pids(netdata_publish_shm_t *shm, struct pid_on_target2 *root) |
| 735 | { |
| 736 | netdata_publish_shm_t shmv; |
| 737 | memset(&shmv, 0, sizeof(shmv)); |
| 738 | while (root) { |
| 739 | netdata_publish_shm_t *w = &root->shm; |
| 740 | shmv.get += w->get; |
| 741 | shmv.at += w->at; |
| 742 | shmv.dt += w->dt; |
| 743 | shmv.ctl += w->ctl; |
| 744 | |
| 745 | root = root->next; |
| 746 | } |
| 747 | |
| 748 | memcpy(shm, &shmv, sizeof(shmv)); |
| 749 | } |
| 750 | |
| 751 | /** |
| 752 | * Create specific shared memory charts |
| 753 | * |
| 754 | * Create charts for cgroup/application. |
| 755 | * |
| 756 | * @param type the chart type. |
| 757 | * @param update_every value to overwrite the update frequency set by the server. |
| 758 | */ |
| 759 | static void ebpf_create_specific_shm_charts(char *type, int update_every) |
| 760 | { |
| 761 | char *label = (!strncmp(type, "cgroup_", 7)) ? &type[7] : type; |
| 762 | ebpf_create_chart( |
| 763 | type, |
| 764 | NETDATA_SHMGET_CHART, |
| 765 | "Calls to syscall shmget(2).", |
| 766 | EBPF_COMMON_UNITS_CALLS_PER_SEC, |
| 767 | NETDATA_APPS_IPC_SHM_GROUP, |
| 768 | NETDATA_CGROUP_SHM_GET_CONTEXT, |
| 769 | NETDATA_EBPF_CHART_TYPE_LINE, |
| 770 | NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5800, |
| 771 | ebpf_create_global_dimension, |
| 772 | &shm_publish_aggregated[NETDATA_KEY_SHMGET_CALL], |
| 773 | 1, |
| 774 | update_every, |
| 775 | NETDATA_EBPF_MODULE_NAME_SHM); |
| 776 | ebpf_create_chart_labels("cgroup_name", label, RRDLABEL_SRC_AUTO); |
| 777 | ebpf_commit_label(); |
| 778 | |
| 779 | ebpf_create_chart( |
| 780 | type, |
| 781 | NETDATA_SHMAT_CHART, |
| 782 | "Calls to syscall shmat(2).", |
| 783 | EBPF_COMMON_UNITS_CALLS_PER_SEC, |
| 784 | NETDATA_APPS_IPC_SHM_GROUP, |
| 785 | NETDATA_CGROUP_SHM_AT_CONTEXT, |
| 786 | NETDATA_EBPF_CHART_TYPE_LINE, |
| 787 | NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5801, |
| 788 | ebpf_create_global_dimension, |
| 789 | &shm_publish_aggregated[NETDATA_KEY_SHMAT_CALL], |
| 790 | 1, |
| 791 | update_every, |
| 792 | NETDATA_EBPF_MODULE_NAME_SHM); |
| 793 | ebpf_create_chart_labels("cgroup_name", label, RRDLABEL_SRC_AUTO); |
| 794 | ebpf_commit_label(); |
| 795 | |
| 796 | ebpf_create_chart( |
| 797 | type, |
| 798 | NETDATA_SHMDT_CHART, |
| 799 | "Calls to syscall shmdt(2).", |
| 800 | EBPF_COMMON_UNITS_CALLS_PER_SEC, |
| 801 | NETDATA_APPS_IPC_SHM_GROUP, |
| 802 | NETDATA_CGROUP_SHM_DT_CONTEXT, |
| 803 | NETDATA_EBPF_CHART_TYPE_LINE, |
| 804 | NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5802, |
| 805 | ebpf_create_global_dimension, |
| 806 | &shm_publish_aggregated[NETDATA_KEY_SHMDT_CALL], |
| 807 | 1, |
| 808 | update_every, |
| 809 | NETDATA_EBPF_MODULE_NAME_SHM); |
| 810 | ebpf_create_chart_labels("cgroup_name", label, RRDLABEL_SRC_AUTO); |
| 811 | ebpf_commit_label(); |
| 812 | |
| 813 | ebpf_create_chart( |
| 814 | type, |
| 815 | NETDATA_SHMCTL_CHART, |
| 816 | "Calls to syscall shmctl(2).", |
| 817 | EBPF_COMMON_UNITS_CALLS_PER_SEC, |
| 818 | NETDATA_APPS_IPC_SHM_GROUP, |
| 819 | NETDATA_CGROUP_SHM_CTL_CONTEXT, |
| 820 | NETDATA_EBPF_CHART_TYPE_LINE, |
| 821 | NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5803, |
| 822 | ebpf_create_global_dimension, |
| 823 | &shm_publish_aggregated[NETDATA_KEY_SHMCTL_CALL], |
| 824 | 1, |
| 825 | update_every, |
| 826 | NETDATA_EBPF_MODULE_NAME_SHM); |
| 827 | ebpf_create_chart_labels("cgroup_name", label, RRDLABEL_SRC_AUTO); |
| 828 | ebpf_commit_label(); |
| 829 | } |
| 830 | |
| 831 | /** |
| 832 | * Obsolete specific shared memory charts |
| 833 | * |
| 834 | * Obsolete charts for cgroup/application. |
| 835 | * |
| 836 | * @param type the chart type. |
| 837 | * @param update_every value to overwrite the update frequency set by the server. |
| 838 | */ |
| 839 | static void ebpf_obsolete_specific_shm_charts(char *type, int update_every) |
| 840 | { |
| 841 | ebpf_write_chart_obsolete( |
| 842 | type, |
| 843 | NETDATA_SHMGET_CHART, |
| 844 | "", |
| 845 | "Calls to syscall shmget(2).", |
| 846 | EBPF_COMMON_UNITS_CALLS_PER_SEC, |
| 847 | NETDATA_APPS_IPC_SHM_GROUP, |
| 848 | NETDATA_EBPF_CHART_TYPE_LINE, |
| 849 | NETDATA_CGROUP_SHM_GET_CONTEXT, |
| 850 | NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5800, |
| 851 | update_every); |
| 852 | |
| 853 | ebpf_write_chart_obsolete( |
| 854 | type, |
| 855 | NETDATA_SHMAT_CHART, |
| 856 | "", |
| 857 | "Calls to syscall shmat(2).", |
| 858 | EBPF_COMMON_UNITS_CALLS_PER_SEC, |
| 859 | NETDATA_APPS_IPC_SHM_GROUP, |
| 860 | NETDATA_EBPF_CHART_TYPE_LINE, |
| 861 | NETDATA_CGROUP_SHM_AT_CONTEXT, |
| 862 | NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5801, |
| 863 | update_every); |
| 864 | |
| 865 | ebpf_write_chart_obsolete( |
| 866 | type, |
| 867 | NETDATA_SHMDT_CHART, |
| 868 | "", |
| 869 | "Calls to syscall shmdt(2).", |
| 870 | EBPF_COMMON_UNITS_CALLS_PER_SEC, |
| 871 | NETDATA_APPS_IPC_SHM_GROUP, |
| 872 | NETDATA_EBPF_CHART_TYPE_LINE, |
| 873 | NETDATA_CGROUP_SHM_DT_CONTEXT, |
| 874 | NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5802, |
| 875 | update_every); |
| 876 | |
| 877 | ebpf_write_chart_obsolete( |
| 878 | type, |
| 879 | NETDATA_SHMCTL_CHART, |
| 880 | "", |
| 881 | "Calls to syscall shmctl(2).", |
| 882 | EBPF_COMMON_UNITS_CALLS_PER_SEC, |
| 883 | NETDATA_APPS_IPC_SHM_GROUP, |
| 884 | NETDATA_EBPF_CHART_TYPE_LINE, |
| 885 | NETDATA_CGROUP_SHM_CTL_CONTEXT, |
| 886 | NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5803, |
| 887 | update_every); |
| 888 | } |
| 889 | |
| 890 | /** |
| 891 | * Create Systemd Swap Charts |
| 892 | * |
| 893 | * Create charts when systemd is enabled |
| 894 | * |
| 895 | * @param update_every value to overwrite the update frequency set by the server. |
| 896 | **/ |
| 897 | static void ebpf_create_systemd_shm_charts(int update_every) |
| 898 | { |
| 899 | static ebpf_systemd_args_t data_shmget = { |
| 900 | .title = "Calls to syscall shmget(2).", |
| 901 | .units = EBPF_COMMON_UNITS_CALLS_PER_SEC, |
| 902 | .family = NETDATA_APPS_IPC_SHM_GROUP, |
| 903 | .charttype = NETDATA_EBPF_CHART_TYPE_STACKED, |
| 904 | .order = 20191, |
| 905 | .algorithm = EBPF_CHART_ALGORITHM_INCREMENTAL, |
| 906 | .context = NETDATA_SYSTEMD_SHM_GET_CONTEXT, |
| 907 | .module = NETDATA_EBPF_MODULE_NAME_SHM, |
| 908 | .update_every = 0, |
| 909 | .suffix = NETDATA_SHMGET_CHART, |
| 910 | .dimension = "calls"}; |
| 911 | |
| 912 | static ebpf_systemd_args_t data_shmat = { |
| 913 | .title = "Calls to syscall shmat(2).", |
| 914 | .units = EBPF_COMMON_UNITS_CALLS_PER_SEC, |
| 915 | .family = NETDATA_APPS_IPC_SHM_GROUP, |
| 916 | .charttype = NETDATA_EBPF_CHART_TYPE_STACKED, |
| 917 | .order = 20192, |
| 918 | .algorithm = EBPF_CHART_ALGORITHM_INCREMENTAL, |
| 919 | .context = NETDATA_SYSTEMD_SHM_AT_CONTEXT, |
| 920 | .module = NETDATA_EBPF_MODULE_NAME_SHM, |
| 921 | .update_every = 0, |
| 922 | .suffix = NETDATA_SHMAT_CHART, |
| 923 | .dimension = "calls"}; |
| 924 | |
| 925 | static ebpf_systemd_args_t data_shmdt = { |
| 926 | .title = "Calls to syscall shmdt(2).", |
| 927 | .units = EBPF_COMMON_UNITS_CALLS_PER_SEC, |
| 928 | .family = NETDATA_APPS_IPC_SHM_GROUP, |
| 929 | .charttype = NETDATA_EBPF_CHART_TYPE_STACKED, |
| 930 | .order = 20193, |
| 931 | .algorithm = EBPF_CHART_ALGORITHM_INCREMENTAL, |
| 932 | .context = NETDATA_SYSTEMD_SHM_DT_CONTEXT, |
| 933 | .module = NETDATA_EBPF_MODULE_NAME_SHM, |
| 934 | .update_every = 0, |
| 935 | .suffix = NETDATA_SHMDT_CHART, |
| 936 | .dimension = "calls"}; |
| 937 | |
| 938 | static ebpf_systemd_args_t data_shmctl = { |
| 939 | .title = "Calls to syscall shmctl(2).", |
| 940 | .units = EBPF_COMMON_UNITS_CALLS_PER_SEC, |
| 941 | .family = NETDATA_APPS_IPC_SHM_GROUP, |
| 942 | .charttype = NETDATA_EBPF_CHART_TYPE_STACKED, |
| 943 | .order = 20194, |
| 944 | .algorithm = EBPF_CHART_ALGORITHM_INCREMENTAL, |
| 945 | .context = NETDATA_SYSTEMD_SHM_CTL_CONTEXT, |
| 946 | .module = NETDATA_EBPF_MODULE_NAME_SHM, |
| 947 | .update_every = 0, |
| 948 | .suffix = NETDATA_SHMCTL_CHART, |
| 949 | .dimension = "calls"}; |
| 950 | |
| 951 | if (!data_shmget.update_every) |
| 952 | data_shmat.update_every = data_shmctl.update_every = data_shmdt.update_every = data_shmget.update_every = |
| 953 | update_every; |
| 954 | |
| 955 | ebpf_cgroup_target_t *w; |
| 956 | for (w = ebpf_cgroup_pids; w; w = w->next) { |
| 957 | if (ebpf_plugin_stop()) |
| 958 | break; |
| 959 | |
| 960 | if (unlikely(!w->systemd || w->flags & NETDATA_EBPF_SERVICES_HAS_SHM_CHART)) |
| 961 | continue; |
| 962 | |
| 963 | data_shmat.id = data_shmctl.id = data_shmdt.id = data_shmget.id = w->name; |
| 964 | ebpf_create_charts_on_systemd(&data_shmat); |
| 965 | |
| 966 | ebpf_create_charts_on_systemd(&data_shmctl); |
| 967 | |
| 968 | ebpf_create_charts_on_systemd(&data_shmdt); |
| 969 | |
| 970 | ebpf_create_charts_on_systemd(&data_shmget); |
| 971 | |
| 972 | w->flags |= NETDATA_EBPF_SERVICES_HAS_SHM_CHART; |
| 973 | } |
| 974 | } |
| 975 | |
| 976 | /** |
| 977 | * Send Systemd charts |
| 978 | * |
| 979 | * Send collected data to Netdata. |
| 980 | */ |
| 981 | static void ebpf_send_systemd_shm_charts(void) |
| 982 | { |
| 983 | static const char *charts[] = { |
| 984 | NETDATA_SHMGET_CHART, NETDATA_SHMAT_CHART, NETDATA_SHMDT_CHART, NETDATA_SHMCTL_CHART}; |
| 985 | |
| 986 | ebpf_cgroup_target_t *ect; |
| 987 | for (ect = ebpf_cgroup_pids; ect; ect = ect->next) { |
| 988 | if (ebpf_plugin_stop()) |
| 989 | break; |
| 990 | |
| 991 | if (unlikely(!(ect->flags & NETDATA_EBPF_SERVICES_HAS_SHM_CHART))) { |
| 992 | continue; |
| 993 | } |
| 994 | |
| 995 | ebpf_write_begin_chart(ect->name, charts[NETDATA_KEY_SHMGET_CALL], ""); |
| 996 | write_chart_dimension("calls", (long long)ect->publish_shm.get); |
| 997 | ebpf_write_end_chart(); |
| 998 | |
| 999 | ebpf_write_begin_chart(ect->name, charts[NETDATA_KEY_SHMAT_CALL], ""); |
| 1000 | write_chart_dimension("calls", (long long)ect->publish_shm.at); |
| 1001 | ebpf_write_end_chart(); |
| 1002 | |
| 1003 | ebpf_write_begin_chart(ect->name, charts[NETDATA_KEY_SHMDT_CALL], ""); |
| 1004 | write_chart_dimension("calls", (long long)ect->publish_shm.dt); |
| 1005 | ebpf_write_end_chart(); |
| 1006 | |
| 1007 | ebpf_write_begin_chart(ect->name, charts[NETDATA_KEY_SHMCTL_CALL], ""); |
| 1008 | write_chart_dimension("calls", (long long)ect->publish_shm.ctl); |
| 1009 | ebpf_write_end_chart(); |
| 1010 | } |
| 1011 | } |
| 1012 | |
| 1013 | /* |
| 1014 | * Send Specific Shared memory data |
| 1015 | * |
| 1016 | * Send data for specific cgroup/apps. |
| 1017 | * |
| 1018 | * @param type chart type |
| 1019 | * @param values structure with values that will be sent to netdata |
| 1020 | */ |
| 1021 | static void ebpf_send_specific_shm_data(char *type, netdata_publish_shm_t *values) |
| 1022 | { |
| 1023 | static const char *charts[] = { |
| 1024 | NETDATA_SHMGET_CHART, NETDATA_SHMAT_CHART, NETDATA_SHMDT_CHART, NETDATA_SHMCTL_CHART}; |
| 1025 | |
| 1026 | ebpf_write_begin_chart(type, charts[NETDATA_KEY_SHMGET_CALL], ""); |
| 1027 | write_chart_dimension(shm_publish_aggregated[NETDATA_KEY_SHMGET_CALL].name, (long long)values->get); |
| 1028 | ebpf_write_end_chart(); |
| 1029 | |
| 1030 | ebpf_write_begin_chart(type, charts[NETDATA_KEY_SHMAT_CALL], ""); |
| 1031 | write_chart_dimension(shm_publish_aggregated[NETDATA_KEY_SHMAT_CALL].name, (long long)values->at); |
| 1032 | ebpf_write_end_chart(); |
| 1033 | |
| 1034 | ebpf_write_begin_chart(type, charts[NETDATA_KEY_SHMDT_CALL], ""); |
| 1035 | write_chart_dimension(shm_publish_aggregated[NETDATA_KEY_SHMDT_CALL].name, (long long)values->dt); |
| 1036 | ebpf_write_end_chart(); |
| 1037 | |
| 1038 | ebpf_write_begin_chart(type, charts[NETDATA_KEY_SHMCTL_CALL], ""); |
| 1039 | write_chart_dimension(shm_publish_aggregated[NETDATA_KEY_SHMCTL_CALL].name, (long long)values->ctl); |
| 1040 | ebpf_write_end_chart(); |
| 1041 | } |
| 1042 | |
| 1043 | /** |
| 1044 | * Send data to Netdata calling auxiliary functions. |
| 1045 | * |
| 1046 | * @param update_every value to overwrite the update frequency set by the server. |
| 1047 | */ |
| 1048 | void ebpf_shm_send_cgroup_data(int update_every) |
| 1049 | { |
| 1050 | netdata_mutex_lock(&mutex_cgroup_shm); |
| 1051 | ebpf_cgroup_target_t *ect; |
| 1052 | for (ect = ebpf_cgroup_pids; ect; ect = ect->next) { |
| 1053 | ebpf_shm_sum_cgroup_pids(&ect->publish_shm, ect->pids); |
| 1054 | } |
| 1055 | |
| 1056 | if (ebpf_plugin_stop()) { |
| 1057 | netdata_mutex_unlock(&mutex_cgroup_shm); |
| 1058 | return; |
| 1059 | } |
| 1060 | |
| 1061 | if (ebpf_cgroup_systemd_enabled_get()) { |
| 1062 | if (ebpf_send_cgroup_chart_get()) { |
| 1063 | ebpf_create_systemd_shm_charts(update_every); |
| 1064 | } |
| 1065 | |
| 1066 | ebpf_send_systemd_shm_charts(); |
| 1067 | } |
| 1068 | |
| 1069 | for (ect = ebpf_cgroup_pids; ect; ect = ect->next) { |
| 1070 | if (ebpf_plugin_stop()) |
| 1071 | break; |
| 1072 | |
| 1073 | if (ect->systemd) |
| 1074 | continue; |
| 1075 | |
| 1076 | if (!(ect->flags & NETDATA_EBPF_CGROUP_HAS_SHM_CHART) && ect->updated) { |
| 1077 | ebpf_create_specific_shm_charts(ect->name, update_every); |
| 1078 | ect->flags |= NETDATA_EBPF_CGROUP_HAS_SHM_CHART; |
| 1079 | } |
| 1080 | |
| 1081 | if (ect->flags & NETDATA_EBPF_CGROUP_HAS_SHM_CHART) { |
| 1082 | if (ect->updated) { |
| 1083 | ebpf_send_specific_shm_data(ect->name, &ect->publish_shm); |
| 1084 | } else { |
| 1085 | ebpf_obsolete_specific_shm_charts(ect->name, update_every); |
| 1086 | ect->flags &= ~NETDATA_EBPF_CGROUP_HAS_SHM_CHART; |
| 1087 | } |
| 1088 | } |
| 1089 | } |
| 1090 | |
| 1091 | netdata_mutex_unlock(&mutex_cgroup_shm); |
| 1092 | } |
| 1093 | |
| 1094 | /** |
| 1095 | * Resume apps data |
| 1096 | */ |
| 1097 | void ebpf_shm_resume_apps_data() |
| 1098 | { |
| 1099 | struct ebpf_target *w; |
| 1100 | netdata_mutex_lock(&collect_data_mutex); |
| 1101 | for (w = apps_groups_root_target; w; w = w->next) { |
| 1102 | if (ebpf_plugin_stop()) |
| 1103 | break; |
| 1104 | |
| 1105 | if (unlikely(!(w->charts_created & (1 << EBPF_MODULE_SHM_IDX)))) |
| 1106 | continue; |
| 1107 | |
| 1108 | ebpf_shm_sum_pids(&w->shm, w->root_pid); |
| 1109 | } |
| 1110 | netdata_mutex_unlock(&collect_data_mutex); |
| 1111 | } |
| 1112 | |
| 1113 | /** |
| 1114 | * DCstat thread |
| 1115 | * |
| 1116 | * Thread used to generate dcstat charts. |
| 1117 | * |
| 1118 | * @param ptr a pointer to `struct ebpf_module` |
| 1119 | * |
| 1120 | * @return It always return NULL |
| 1121 | */ |
| 1122 | void ebpf_read_shm_thread(void *ptr) |
| 1123 | { |
| 1124 | ebpf_module_t *em = (ebpf_module_t *)ptr; |
| 1125 | |
| 1126 | int maps_per_core = em->maps_per_core; |
| 1127 | int update_every = em->update_every; |
| 1128 | int collect_pid = (em->apps_charts || em->cgroup_charts); |
| 1129 | if (!collect_pid) |
| 1130 | return; |
| 1131 | |
| 1132 | int counter = update_every - 1; |
| 1133 | |
| 1134 | uint32_t lifetime = em->lifetime; |
| 1135 | int cgroups = em->cgroup_charts; |
| 1136 | uint32_t running_time = 0; |
| 1137 | ebpf_set_pid_map_fd(NETDATA_EBPF_PIDS_SHM_IDX, shm_maps[NETDATA_PID_SHM_TABLE].map_fd); |
| 1138 | heartbeat_t hb; |
| 1139 | heartbeat_init(&hb, USEC_PER_SEC); |
| 1140 | while (!ebpf_plugin_stop() && running_time < lifetime) { |
| 1141 | if (ebpf_plugin_stop()) |
| 1142 | break; |
| 1143 | |
| 1144 | (void)heartbeat_next(&hb); |
| 1145 | if (ebpf_plugin_stop()) |
| 1146 | break; |
| 1147 | |
| 1148 | if (++counter != update_every) |
| 1149 | continue; |
| 1150 | |
| 1151 | if (!ebpf_shm_sem_wait_or_stop(shm_mutex_ebpf_integration)) { |
| 1152 | if (errno != ECANCELED) |
| 1153 | netdata_log_error("SHM: Failed to wait on semaphore."); |
| 1154 | break; |
| 1155 | } |
| 1156 | ebpf_read_shm_apps_table(maps_per_core); |
| 1157 | ebpf_shm_resume_apps_data(); |
| 1158 | if (ebpf_plugin_stop()) { |
| 1159 | if (sem_post(shm_mutex_ebpf_integration)) |
| 1160 | netdata_log_error("SHM: Failed to post semaphore."); |
| 1161 | break; |
| 1162 | } |
| 1163 | |
| 1164 | if (cgroups && ebpf_cgroup_integration_active_get()) |
| 1165 | ebpf_update_shm_cgroup(); |
| 1166 | |
| 1167 | if (sem_post(shm_mutex_ebpf_integration)) { |
| 1168 | netdata_log_error("SHM: Failed to post semaphore."); |
| 1169 | break; |
| 1170 | } |
| 1171 | |
| 1172 | counter = 0; |
| 1173 | |
| 1174 | if (ebpf_plugin_stop()) |
| 1175 | break; |
| 1176 | |
| 1177 | netdata_mutex_lock(&ebpf_exit_cleanup); |
| 1178 | running_time += update_every; |
| 1179 | em->running_time = running_time; |
| 1180 | netdata_mutex_unlock(&ebpf_exit_cleanup); |
| 1181 | } |
| 1182 | } |
| 1183 | |
| 1184 | /** |
| 1185 | * Main loop for this collector. |
| 1186 | */ |
| 1187 | static void shm_collector(ebpf_module_t *em) |
| 1188 | { |
| 1189 | int cgroups = em->cgroup_charts; |
| 1190 | int update_every = em->update_every; |
| 1191 | int counter = update_every - 1; |
| 1192 | int maps_per_core = em->maps_per_core; |
| 1193 | uint32_t running_time = 0; |
| 1194 | uint32_t lifetime = em->lifetime; |
| 1195 | netdata_idx_t *stats = em->hash_table_stats; |
| 1196 | memset(stats, 0, sizeof(em->hash_table_stats)); |
| 1197 | heartbeat_t hb; |
| 1198 | heartbeat_init(&hb, USEC_PER_SEC); |
| 1199 | while (!ebpf_plugin_stop() && running_time < lifetime) { |
| 1200 | if (ebpf_plugin_stop()) |
| 1201 | break; |
| 1202 | |
| 1203 | heartbeat_next(&hb); |
| 1204 | |
| 1205 | if (ebpf_plugin_stop()) |
| 1206 | break; |
| 1207 | |
| 1208 | if (++counter != update_every) |
| 1209 | continue; |
| 1210 | |
| 1211 | counter = 0; |
| 1212 | netdata_apps_integration_flags_t apps = em->apps_charts; |
| 1213 | ebpf_shm_read_global_table(stats, maps_per_core); |
| 1214 | netdata_mutex_lock(&lock); |
| 1215 | |
| 1216 | shm_send_global(); |
| 1217 | |
| 1218 | if (apps & NETDATA_EBPF_APPS_FLAG_CHART_CREATED) { |
| 1219 | ebpf_shm_send_apps_data(apps_groups_root_target); |
| 1220 | } |
| 1221 | |
| 1222 | if (ebpf_plugin_stop()) { |
| 1223 | netdata_mutex_unlock(&lock); |
| 1224 | break; |
| 1225 | } |
| 1226 | |
| 1227 | if (cgroups && ebpf_cgroup_integration_active_get()) { |
| 1228 | ebpf_shm_send_cgroup_data(update_every); |
| 1229 | } |
| 1230 | |
| 1231 | netdata_mutex_unlock(&lock); |
| 1232 | |
| 1233 | if (ebpf_plugin_stop()) |
| 1234 | break; |
| 1235 | |
| 1236 | netdata_mutex_lock(&ebpf_exit_cleanup); |
| 1237 | running_time += update_every; |
| 1238 | em->running_time = running_time; |
| 1239 | netdata_mutex_unlock(&ebpf_exit_cleanup); |
| 1240 | } |
| 1241 | } |
| 1242 | |
| 1243 | /***************************************************************** |
| 1244 | * INITIALIZE THREAD |
| 1245 | *****************************************************************/ |
| 1246 | |
| 1247 | /** |
| 1248 | * Create apps charts |
| 1249 | * |
| 1250 | * Call ebpf_create_chart to create the charts on apps submenu. |
| 1251 | * |
| 1252 | * @param em a pointer to the structure with the default values. |
| 1253 | */ |
| 1254 | void ebpf_shm_create_apps_charts(struct ebpf_module *em, void *ptr) |
| 1255 | { |
| 1256 | struct ebpf_target *root = ptr; |
| 1257 | struct ebpf_target *w; |
| 1258 | int update_every = em->update_every; |
| 1259 | for (w = root; w; w = w->next) { |
| 1260 | if (unlikely(!w->exposed)) |
| 1261 | continue; |
| 1262 | |
| 1263 | ebpf_write_chart_cmd( |
| 1264 | NETDATA_APP_FAMILY, |
| 1265 | w->clean_name, |
| 1266 | "_ebpf_shmget_call", |
| 1267 | "Calls to syscall shmget(2).", |
| 1268 | EBPF_COMMON_UNITS_CALLS_PER_SEC, |
| 1269 | NETDATA_APPS_IPC_SHM_GROUP, |
| 1270 | NETDATA_EBPF_CHART_TYPE_STACKED, |
| 1271 | "app.ebpf_shmget_call", |
| 1272 | 20191, |
| 1273 | update_every, |
| 1274 | NETDATA_EBPF_MODULE_NAME_SHM); |
| 1275 | ebpf_create_chart_labels("app_group", w->name, RRDLABEL_SRC_AUTO); |
| 1276 | ebpf_commit_label(); |
| 1277 | fprintf(stdout, "DIMENSION calls '' %s 1 1\n", ebpf_algorithms[NETDATA_EBPF_INCREMENTAL_IDX]); |
| 1278 | |
| 1279 | ebpf_write_chart_cmd( |
| 1280 | NETDATA_APP_FAMILY, |
| 1281 | w->clean_name, |
| 1282 | "_ebpf_shmat_call", |
| 1283 | "Calls to syscall shmat(2).", |
| 1284 | EBPF_COMMON_UNITS_CALLS_PER_SEC, |
| 1285 | NETDATA_APPS_IPC_SHM_GROUP, |
| 1286 | NETDATA_EBPF_CHART_TYPE_STACKED, |
| 1287 | "app.ebpf_shmat_call", |
| 1288 | 20192, |
| 1289 | update_every, |
| 1290 | NETDATA_EBPF_MODULE_NAME_SHM); |
| 1291 | ebpf_create_chart_labels("app_group", w->name, RRDLABEL_SRC_AUTO); |
| 1292 | ebpf_commit_label(); |
| 1293 | fprintf(stdout, "DIMENSION calls '' %s 1 1\n", ebpf_algorithms[NETDATA_EBPF_INCREMENTAL_IDX]); |
| 1294 | |
| 1295 | ebpf_write_chart_cmd( |
| 1296 | NETDATA_APP_FAMILY, |
| 1297 | w->clean_name, |
| 1298 | "_ebpf_shmdt_call", |
| 1299 | "Calls to syscall shmdt(2).", |
| 1300 | EBPF_COMMON_UNITS_CALLS_PER_SEC, |
| 1301 | NETDATA_APPS_IPC_SHM_GROUP, |
| 1302 | NETDATA_EBPF_CHART_TYPE_STACKED, |
| 1303 | "app.ebpf_shmdt_call", |
| 1304 | 20193, |
| 1305 | update_every, |
| 1306 | NETDATA_EBPF_MODULE_NAME_SHM); |
| 1307 | ebpf_create_chart_labels("app_group", w->name, RRDLABEL_SRC_AUTO); |
| 1308 | ebpf_commit_label(); |
| 1309 | fprintf(stdout, "DIMENSION calls '' %s 1 1\n", ebpf_algorithms[NETDATA_EBPF_INCREMENTAL_IDX]); |
| 1310 | |
| 1311 | ebpf_write_chart_cmd( |
| 1312 | NETDATA_APP_FAMILY, |
| 1313 | w->clean_name, |
| 1314 | "_ebpf_shmctl_call", |
| 1315 | "Calls to syscall shmctl(2).", |
| 1316 | EBPF_COMMON_UNITS_CALLS_PER_SEC, |
| 1317 | NETDATA_APPS_IPC_SHM_GROUP, |
| 1318 | NETDATA_EBPF_CHART_TYPE_STACKED, |
| 1319 | "app.ebpf_shmctl_call", |
| 1320 | 20194, |
| 1321 | update_every, |
| 1322 | NETDATA_EBPF_MODULE_NAME_SHM); |
| 1323 | ebpf_create_chart_labels("app_group", w->name, RRDLABEL_SRC_AUTO); |
| 1324 | ebpf_commit_label(); |
| 1325 | fprintf(stdout, "DIMENSION calls '' %s 1 1\n", ebpf_algorithms[NETDATA_EBPF_INCREMENTAL_IDX]); |
| 1326 | |
| 1327 | w->charts_created |= 1 << EBPF_MODULE_SHM_IDX; |
| 1328 | } |
| 1329 | |
| 1330 | em->apps_charts |= NETDATA_EBPF_APPS_FLAG_CHART_CREATED; |
| 1331 | } |
| 1332 | |
| 1333 | /** |
| 1334 | * Allocate vectors used with this thread. |
| 1335 | * |
| 1336 | * We are not testing the return, because callocz does this and shutdown the software |
| 1337 | * case it was not possible to allocate. |
| 1338 | * |
| 1339 | * @param apps is apps enabled? |
| 1340 | */ |
| 1341 | static void ebpf_shm_allocate_global_vectors(void) |
| 1342 | { |
| 1343 | shm_vector = callocz((size_t)ebpf_nprocs, sizeof(netdata_ebpf_shm_t)); |
| 1344 | shm_values = callocz((size_t)ebpf_nprocs, sizeof(netdata_idx_t)); |
| 1345 | |
| 1346 | memset(shm_hash_values, 0, sizeof(shm_hash_values)); |
| 1347 | } |
| 1348 | |
| 1349 | /***************************************************************** |
| 1350 | * MAIN THREAD |
| 1351 | *****************************************************************/ |
| 1352 | |
| 1353 | /** |
| 1354 | * Create global charts |
| 1355 | * |
| 1356 | * Call ebpf_create_chart to create the charts for the collector. |
| 1357 | * |
| 1358 | * @param update_every value to overwrite the update frequency set by the server. |
| 1359 | */ |
| 1360 | static void ebpf_create_shm_charts(int update_every) |
| 1361 | { |
| 1362 | ebpf_create_chart( |
| 1363 | NETDATA_EBPF_SYSTEM_GROUP, |
| 1364 | NETDATA_SHM_GLOBAL_CHART, |
| 1365 | "Calls to shared memory system calls", |
| 1366 | EBPF_COMMON_UNITS_CALLS_PER_SEC, |
| 1367 | NETDATA_SYSTEM_IPC_SHM_SUBMENU, |
| 1368 | "system.shared_memory_calls", |
| 1369 | NETDATA_EBPF_CHART_TYPE_LINE, |
| 1370 | NETDATA_CHART_PRIO_SYSTEM_IPC_SHARED_MEM_CALLS, |
| 1371 | ebpf_create_global_dimension, |
| 1372 | shm_publish_aggregated, |
| 1373 | NETDATA_SHM_END, |
| 1374 | update_every, |
| 1375 | NETDATA_EBPF_MODULE_NAME_SHM); |
| 1376 | |
| 1377 | fflush(stdout); |
| 1378 | } |
| 1379 | |
| 1380 | /* |
| 1381 | * Load BPF |
| 1382 | * |
| 1383 | * Load BPF files. |
| 1384 | * |
| 1385 | * @param em the structure with configuration |
| 1386 | */ |
| 1387 | static int ebpf_shm_load_bpf(ebpf_module_t *em) |
| 1388 | { |
| 1389 | #ifdef LIBBPF_MAJOR_VERSION |
| 1390 | ebpf_define_map_type(em->maps, em->maps_per_core, running_on_kernel); |
| 1391 | #endif |
| 1392 | |
| 1393 | int ret = 0; |
| 1394 | |
| 1395 | ebpf_adjust_apps_cgroup(em, em->targets[NETDATA_KEY_SHMGET_CALL].mode); |
| 1396 | if (em->load & EBPF_LOAD_LEGACY) { |
| 1397 | em->probe_links = ebpf_load_program(ebpf_plugin_dir, em, running_on_kernel, isrh, &em->objects); |
| 1398 | if (!em->probe_links) { |
| 1399 | ret = -1; |
| 1400 | } |
| 1401 | } |
| 1402 | #ifdef LIBBPF_MAJOR_VERSION |
| 1403 | else { |
| 1404 | shm_bpf_obj = shm_bpf__open(); |
| 1405 | if (!shm_bpf_obj) |
| 1406 | ret = -1; |
| 1407 | else { |
| 1408 | ret = ebpf_shm_load_and_attach(shm_bpf_obj, em); |
| 1409 | if (ret) { |
| 1410 | shm_bpf__destroy(shm_bpf_obj); |
| 1411 | shm_bpf_obj = NULL; |
| 1412 | } |
| 1413 | } |
| 1414 | } |
| 1415 | #endif |
| 1416 | |
| 1417 | if (ret) |
| 1418 | netdata_log_error("%s %s", EBPF_DEFAULT_ERROR_MSG, em->info.thread_name); |
| 1419 | |
| 1420 | return ret; |
| 1421 | } |
| 1422 | |
| 1423 | /** |
| 1424 | * Shared memory thread. |
| 1425 | * |
| 1426 | * @param ptr a pointer to `struct ebpf_module` |
| 1427 | * @return It always return NULL |
| 1428 | */ |
| 1429 | void ebpf_shm_thread(void *ptr) |
| 1430 | { |
| 1431 | ebpf_set_pid_map_fd(NETDATA_EBPF_PIDS_SHM_IDX, -1); |
| 1432 | ebpf_module_t *em = (ebpf_module_t *)ptr; |
| 1433 | |
| 1434 | CLEANUP_FUNCTION_REGISTER(ebpf_shm_exit) cleanup_ptr = em; |
| 1435 | |
| 1436 | if (!ebpf_module_thread_has_valid_state(em)) { |
| 1437 | goto endshm; |
| 1438 | } |
| 1439 | |
| 1440 | em->maps = shm_maps; |
| 1441 | |
| 1442 | ebpf_update_pid_table(&shm_maps[NETDATA_PID_SHM_TABLE], em); |
| 1443 | |
| 1444 | #ifdef LIBBPF_MAJOR_VERSION |
| 1445 | ebpf_adjust_thread_load(em, default_btf); |
| 1446 | #endif |
| 1447 | if (ebpf_shm_load_bpf(em)) { |
| 1448 | goto endshm; |
| 1449 | } |
| 1450 | ebpf_mark_program_loaded(); |
| 1451 | |
| 1452 | ebpf_shm_allocate_global_vectors(); |
| 1453 | |
| 1454 | int algorithms[NETDATA_SHM_END] = { |
| 1455 | NETDATA_EBPF_INCREMENTAL_IDX, |
| 1456 | NETDATA_EBPF_INCREMENTAL_IDX, |
| 1457 | NETDATA_EBPF_INCREMENTAL_IDX, |
| 1458 | NETDATA_EBPF_INCREMENTAL_IDX}; |
| 1459 | ebpf_global_labels( |
| 1460 | shm_aggregated_data, |
| 1461 | shm_publish_aggregated, |
| 1462 | shm_dimension_name, |
| 1463 | shm_dimension_name, |
| 1464 | algorithms, |
| 1465 | NETDATA_SHM_END); |
| 1466 | |
| 1467 | netdata_mutex_lock(&lock); |
| 1468 | ebpf_create_shm_charts(em->update_every); |
| 1469 | ebpf_update_stats(&plugin_statistics, em); |
| 1470 | ebpf_update_kernel_memory_with_vector(&plugin_statistics, em->maps, EBPF_ACTION_STAT_ADD); |
| 1471 | netdata_mutex_unlock(&lock); |
| 1472 | |
| 1473 | ebpf_read_shm.thread = |
| 1474 | nd_thread_create(ebpf_read_shm.name, NETDATA_THREAD_OPTION_DEFAULT, ebpf_read_shm_thread, em); |
| 1475 | |
| 1476 | shm_collector(em); |
| 1477 | |
| 1478 | endshm: |
| 1479 | ebpf_update_disabled_plugin_stats(em); |
| 1480 | } |