Merging upstream version 1.45.3+dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1372 insertions, 0 deletions

diff --git a/src/collectors/ebpf.plugin/ebpf_shm.c b/src/collectors/ebpf.plugin/ebpf_shm.c
new file mode 100644
index 000000000..816e68cfd
--- /dev/null
+++ b/src/collectors/ebpf.plugin/ebpf_shm.c
@@ -0,0 +1,1372 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "ebpf.h"
+#include "ebpf_shm.h"
+
+static char *shm_dimension_name[NETDATA_SHM_END] = { "get", "at", "dt", "ctl" };
+static netdata_syscall_stat_t shm_aggregated_data[NETDATA_SHM_END];
+static netdata_publish_syscall_t shm_publish_aggregated[NETDATA_SHM_END];
+
+netdata_publish_shm_t *shm_vector = NULL;
+
+static netdata_idx_t shm_hash_values[NETDATA_SHM_END];
+static netdata_idx_t *shm_values = NULL;
+
+struct config shm_config = { .first_section = NULL,
+    .last_section = NULL,
+    .mutex = NETDATA_MUTEX_INITIALIZER,
+    .index = { .avl_tree = { .root = NULL, .compar = appconfig_section_compare },
+        .rwlock = AVL_LOCK_INITIALIZER } };
+
+static ebpf_local_maps_t shm_maps[] = {{.name = "tbl_pid_shm", .internal_input = ND_EBPF_DEFAULT_PID_SIZE,
+                                         .user_input = 0,
+                                         .type = NETDATA_EBPF_MAP_RESIZABLE | NETDATA_EBPF_MAP_PID,
+                                         .map_fd = ND_EBPF_MAP_FD_NOT_INITIALIZED,
+#ifdef LIBBPF_MAJOR_VERSION
+                                         .map_type = BPF_MAP_TYPE_PERCPU_HASH
+#endif
+                                       },
+                                        {.name = "shm_ctrl", .internal_input = NETDATA_CONTROLLER_END,
+                                         .user_input = 0,
+                                         .type = NETDATA_EBPF_MAP_CONTROLLER,
+                                         .map_fd = ND_EBPF_MAP_FD_NOT_INITIALIZED,
+#ifdef LIBBPF_MAJOR_VERSION
+                                         .map_type = BPF_MAP_TYPE_PERCPU_ARRAY
+#endif
+                                        },
+                                        {.name = "tbl_shm", .internal_input = NETDATA_SHM_END,
+                                         .user_input = 0,
+                                         .type = NETDATA_EBPF_MAP_STATIC,
+                                         .map_fd = ND_EBPF_MAP_FD_NOT_INITIALIZED,
+#ifdef LIBBPF_MAJOR_VERSION
+                                         .map_type = BPF_MAP_TYPE_PERCPU_ARRAY
+#endif
+                                        },
+                                        {.name = NULL, .internal_input = 0, .user_input = 0}};
+
+netdata_ebpf_targets_t shm_targets[] = { {.name = "shmget", .mode = EBPF_LOAD_TRAMPOLINE},
+                                         {.name = "shmat", .mode = EBPF_LOAD_TRAMPOLINE},
+                                         {.name = "shmdt", .mode = EBPF_LOAD_TRAMPOLINE},
+                                         {.name = "shmctl", .mode = EBPF_LOAD_TRAMPOLINE},
+                                         {.name = NULL, .mode = EBPF_LOAD_TRAMPOLINE}};
+
+#ifdef NETDATA_DEV_MODE
+int shm_disable_priority;
+#endif
+
+struct netdata_static_thread ebpf_read_shm = {
+    .name = "EBPF_READ_SHM",
+    .config_section = NULL,
+    .config_name = NULL,
+    .env_name = NULL,
+    .enabled = 1,
+    .thread = NULL,
+    .init_routine = NULL,
+    .start_routine = NULL
+};
+
+#ifdef LIBBPF_MAJOR_VERSION
+/*****************************************************************
+ *
+ *  BTF FUNCTIONS
+ *
+ *****************************************************************/
+
+/*
+ * Disable tracepoint
+ *
+ * Disable all tracepoints to use exclusively another method.
+ *
+ * @param obj is the main structure for bpf objects.
+ */
+static void ebpf_shm_disable_tracepoint(struct shm_bpf *obj)
+{
+    bpf_program__set_autoload(obj->progs.netdata_syscall_shmget, false);
+    bpf_program__set_autoload(obj->progs.netdata_syscall_shmat, false);
+    bpf_program__set_autoload(obj->progs.netdata_syscall_shmdt, false);
+    bpf_program__set_autoload(obj->progs.netdata_syscall_shmctl, false);
+}
+
+/*
+ * Disable probe
+ *
+ * Disable all probes to use exclusively another method.
+ *
+ * @param obj is the main structure for bpf objects.
+ */
+static void ebpf_disable_probe(struct shm_bpf *obj)
+{
+    bpf_program__set_autoload(obj->progs.netdata_shmget_probe, false);
+    bpf_program__set_autoload(obj->progs.netdata_shmat_probe, false);
+    bpf_program__set_autoload(obj->progs.netdata_shmdt_probe, false);
+    bpf_program__set_autoload(obj->progs.netdata_shmctl_probe, false);
+}
+
+/*
+ * Disable trampoline
+ *
+ * Disable all trampoline to use exclusively another method.
+ *
+ * @param obj is the main structure for bpf objects.
+ */
+static void ebpf_disable_trampoline(struct shm_bpf *obj)
+{
+    bpf_program__set_autoload(obj->progs.netdata_shmget_fentry, false);
+    bpf_program__set_autoload(obj->progs.netdata_shmat_fentry, false);
+    bpf_program__set_autoload(obj->progs.netdata_shmdt_fentry, false);
+    bpf_program__set_autoload(obj->progs.netdata_shmctl_fentry, false);
+}
+
+/**
+ * Set trampoline target
+ *
+ * Set the targets we will monitor.
+ *
+ * @param obj is the main structure for bpf objects.
+ */
+static void ebpf_set_trampoline_target(struct shm_bpf *obj)
+{
+    char syscall[NETDATA_EBPF_MAX_SYSCALL_LENGTH + 1];
+    ebpf_select_host_prefix(syscall, NETDATA_EBPF_MAX_SYSCALL_LENGTH,
+                            shm_targets[NETDATA_KEY_SHMGET_CALL].name, running_on_kernel);
+
+    bpf_program__set_attach_target(obj->progs.netdata_shmget_fentry, 0,
+                                   syscall);
+
+    ebpf_select_host_prefix(syscall, NETDATA_EBPF_MAX_SYSCALL_LENGTH,
+                            shm_targets[NETDATA_KEY_SHMAT_CALL].name, running_on_kernel);
+    bpf_program__set_attach_target(obj->progs.netdata_shmat_fentry, 0,
+                                   syscall);
+
+    ebpf_select_host_prefix(syscall, NETDATA_EBPF_MAX_SYSCALL_LENGTH,
+                            shm_targets[NETDATA_KEY_SHMDT_CALL].name, running_on_kernel);
+    bpf_program__set_attach_target(obj->progs.netdata_shmdt_fentry, 0,
+                                   syscall);
+
+    ebpf_select_host_prefix(syscall, NETDATA_EBPF_MAX_SYSCALL_LENGTH,
+                            shm_targets[NETDATA_KEY_SHMCTL_CALL].name, running_on_kernel);
+    bpf_program__set_attach_target(obj->progs.netdata_shmctl_fentry, 0,
+                                   syscall);
+}
+
+/**
+ * SHM Attach Probe
+ *
+ * Attach probes to target
+ *
+ * @param obj is the main structure for bpf objects.
+ *
+ * @return It returns 0 on success and -1 otherwise.
+ */
+static int ebpf_shm_attach_probe(struct shm_bpf *obj)
+{
+    char syscall[NETDATA_EBPF_MAX_SYSCALL_LENGTH + 1];
+    ebpf_select_host_prefix(syscall, NETDATA_EBPF_MAX_SYSCALL_LENGTH,
+                            shm_targets[NETDATA_KEY_SHMGET_CALL].name, running_on_kernel);
+
+    obj->links.netdata_shmget_probe = bpf_program__attach_kprobe(obj->progs.netdata_shmget_probe,
+                                                                 false, syscall);
+    long ret = libbpf_get_error(obj->links.netdata_shmget_probe);
+    if (ret)
+        return -1;
+
+    ebpf_select_host_prefix(syscall, NETDATA_EBPF_MAX_SYSCALL_LENGTH,
+                            shm_targets[NETDATA_KEY_SHMAT_CALL].name, running_on_kernel);
+    obj->links.netdata_shmat_probe = bpf_program__attach_kprobe(obj->progs.netdata_shmat_probe,
+                                                                false, syscall);
+    ret = libbpf_get_error(obj->links.netdata_shmat_probe);
+    if (ret)
+        return -1;
+
+    ebpf_select_host_prefix(syscall, NETDATA_EBPF_MAX_SYSCALL_LENGTH,
+                            shm_targets[NETDATA_KEY_SHMDT_CALL].name, running_on_kernel);
+    obj->links.netdata_shmdt_probe = bpf_program__attach_kprobe(obj->progs.netdata_shmdt_probe,
+                                                                false, syscall);
+    ret = libbpf_get_error(obj->links.netdata_shmdt_probe);
+    if (ret)
+        return -1;
+
+    ebpf_select_host_prefix(syscall, NETDATA_EBPF_MAX_SYSCALL_LENGTH,
+                            shm_targets[NETDATA_KEY_SHMCTL_CALL].name, running_on_kernel);
+    obj->links.netdata_shmctl_probe = bpf_program__attach_kprobe(obj->progs.netdata_shmctl_probe,
+                                                                 false, syscall);
+    ret = libbpf_get_error(obj->links.netdata_shmctl_probe);
+    if (ret)
+        return -1;
+
+    return 0;
+}
+
+/**
+ * Set hash tables
+ *
+ * Set the values for maps according the value given by kernel.
+ */
+static void ebpf_shm_set_hash_tables(struct shm_bpf *obj)
+{
+    shm_maps[NETDATA_PID_SHM_TABLE].map_fd = bpf_map__fd(obj->maps.tbl_pid_shm);
+    shm_maps[NETDATA_SHM_CONTROLLER].map_fd = bpf_map__fd(obj->maps.shm_ctrl);
+    shm_maps[NETDATA_SHM_GLOBAL_TABLE].map_fd = bpf_map__fd(obj->maps.tbl_shm);
+}
+
+/**
+ * Adjust Map Size
+ *
+ * Resize maps according input from users.
+ *
+ * @param obj is the main structure for bpf objects.
+ * @param em  structure with configuration
+ */
+static void ebpf_shm_adjust_map(struct shm_bpf *obj, ebpf_module_t *em)
+{
+    ebpf_update_map_size(obj->maps.tbl_pid_shm, &shm_maps[NETDATA_PID_SHM_TABLE],
+                         em, bpf_map__name(obj->maps.tbl_pid_shm));
+
+    ebpf_update_map_type(obj->maps.tbl_shm, &shm_maps[NETDATA_SHM_GLOBAL_TABLE]);
+    ebpf_update_map_type(obj->maps.tbl_pid_shm, &shm_maps[NETDATA_PID_SHM_TABLE]);
+    ebpf_update_map_type(obj->maps.shm_ctrl, &shm_maps[NETDATA_SHM_CONTROLLER]);
+}
+
+/**
+ * Load and attach
+ *
+ * Load and attach the eBPF code in kernel.
+ *
+ * @param obj is the main structure for bpf objects.
+ * @param em  structure with configuration
+ *
+ * @return it returns 0 on success and -1 otherwise
+ */
+static inline int ebpf_shm_load_and_attach(struct shm_bpf *obj, ebpf_module_t *em)
+{
+    netdata_ebpf_targets_t *shmt = em->targets;
+    netdata_ebpf_program_loaded_t test = shmt[NETDATA_KEY_SHMGET_CALL].mode;
+
+    // We are testing only one, because all will have the same behavior
+    if (test == EBPF_LOAD_TRAMPOLINE ) {
+        ebpf_shm_disable_tracepoint(obj);
+        ebpf_disable_probe(obj);
+
+        ebpf_set_trampoline_target(obj);
+    }  else if (test == EBPF_LOAD_PROBE || test == EBPF_LOAD_RETPROBE ) {
+        ebpf_shm_disable_tracepoint(obj);
+        ebpf_disable_trampoline(obj);
+    } else  {
+        ebpf_disable_probe(obj);
+        ebpf_disable_trampoline(obj);
+    }
+
+    ebpf_shm_adjust_map(obj, em);
+
+    int ret = shm_bpf__load(obj);
+    if (!ret) {
+        if (test != EBPF_LOAD_PROBE && test != EBPF_LOAD_RETPROBE)
+            shm_bpf__attach(obj);
+        else
+            ret = ebpf_shm_attach_probe(obj);
+
+        if (!ret)
+            ebpf_shm_set_hash_tables(obj);
+    }
+
+    return ret;
+}
+#endif
+/*****************************************************************
+ *  FUNCTIONS TO CLOSE THE THREAD
+ *****************************************************************/
+
+static void ebpf_obsolete_specific_shm_charts(char *type, int update_every);
+
+/**
+ * Obsolete services
+ *
+ * Obsolete all service charts created
+ *
+ * @param em a pointer to `struct ebpf_module`
+ */
+static void ebpf_obsolete_shm_services(ebpf_module_t *em, char *id)
+{
+    ebpf_write_chart_obsolete(NETDATA_SERVICE_FAMILY,
+                              id,
+                              NETDATA_SHMGET_CHART,
+                              "Calls to syscall shmget(2).",
+                              EBPF_COMMON_DIMENSION_CALL,
+                              NETDATA_APPS_IPC_SHM_GROUP,
+                              NETDATA_EBPF_CHART_TYPE_STACKED,
+                              NULL,
+                              20191,
+                              em->update_every);
+
+    ebpf_write_chart_obsolete(NETDATA_SERVICE_FAMILY,
+                              id,
+                              NETDATA_SHMAT_CHART,
+                              "Calls to syscall shmat(2).",
+                              EBPF_COMMON_DIMENSION_CALL,
+                              NETDATA_APPS_IPC_SHM_GROUP,
+                              NETDATA_EBPF_CHART_TYPE_STACKED,
+                              NULL,
+                              20192,
+                              em->update_every);
+
+    ebpf_write_chart_obsolete(NETDATA_SERVICE_FAMILY,
+                              id,
+                              NETDATA_SHMDT_CHART,
+                              "Calls to syscall shmdt(2).",
+                              EBPF_COMMON_DIMENSION_CALL,
+                              NETDATA_APPS_IPC_SHM_GROUP,
+                              NETDATA_EBPF_CHART_TYPE_STACKED,
+                              NULL,
+                              20193,
+                              em->update_every);
+
+    ebpf_write_chart_obsolete(NETDATA_SERVICE_FAMILY,
+                              id,
+                              NETDATA_SHMCTL_CHART,
+                              "Calls to syscall shmctl(2).",
+                              EBPF_COMMON_DIMENSION_CALL,
+                              NETDATA_APPS_IPC_SHM_GROUP,
+                              NETDATA_EBPF_CHART_TYPE_STACKED,
+                              NULL,
+                              20193,
+                              em->update_every);
+}
+
+/**
+ * Obsolete cgroup chart
+ *
+ * Send obsolete for all charts created before to close.
+ *
+ * @param em a pointer to `struct ebpf_module`
+ */
+static inline void ebpf_obsolete_shm_cgroup_charts(ebpf_module_t *em) {
+    pthread_mutex_lock(&mutex_cgroup_shm);
+
+    ebpf_cgroup_target_t *ect;
+    for (ect = ebpf_cgroup_pids; ect ; ect = ect->next) {
+        if (ect->systemd) {
+            ebpf_obsolete_shm_services(em, ect->name);
+
+            continue;
+        }
+
+        ebpf_obsolete_specific_shm_charts(ect->name, em->update_every);
+    }
+    pthread_mutex_unlock(&mutex_cgroup_shm);
+}
+
+/**
+ * Obsolette apps charts
+ *
+ * Obsolete apps charts.
+ *
+ * @param em a pointer to the structure with the default values.
+ */
+void ebpf_obsolete_shm_apps_charts(struct ebpf_module *em)
+{
+    struct ebpf_target *w;
+    int update_every = em->update_every;
+    pthread_mutex_lock(&collect_data_mutex);
+    for (w = apps_groups_root_target; w; w = w->next) {
+        if (unlikely(!(w->charts_created & (1<<EBPF_MODULE_SHM_IDX))))
+            continue;
+
+        ebpf_write_chart_obsolete(NETDATA_APP_FAMILY,
+                                  w->clean_name,
+                                  "_ebpf_shmget_call",
+                                  "Calls to syscall shmget(2).",
+                                  EBPF_COMMON_DIMENSION_CALL,
+                                  NETDATA_APPS_IPC_SHM_GROUP,
+                                  NETDATA_EBPF_CHART_TYPE_STACKED,
+                                  "app.ebpf_shmget_call",
+                                  20191,
+                                  update_every);
+
+        ebpf_write_chart_obsolete(NETDATA_APP_FAMILY,
+                                  w->clean_name,
+                                  "_ebpf_shmat_call",
+                                  "Calls to syscall shmat(2).",
+                                  EBPF_COMMON_DIMENSION_CALL,
+                                  NETDATA_APPS_IPC_SHM_GROUP,
+                                  NETDATA_EBPF_CHART_TYPE_STACKED,
+                                  "app.ebpf_shmat_call",
+                                  20192,
+                                  update_every);
+
+        ebpf_write_chart_obsolete(NETDATA_APP_FAMILY,
+                                  w->clean_name,
+                                  "_ebpf_shmdt_call",
+                                  "Calls to syscall shmdt(2).",
+                                  EBPF_COMMON_DIMENSION_CALL,
+                                  NETDATA_APPS_IPC_SHM_GROUP,
+                                  NETDATA_EBPF_CHART_TYPE_STACKED,
+                                  "app.ebpf_shmdt_call",
+                                  20193,
+                                  update_every);
+
+        ebpf_write_chart_obsolete(NETDATA_APP_FAMILY,
+                                  w->clean_name,
+                                  "_ebpf_shmctl_call",
+                                  "Calls to syscall shmctl(2).",
+                                  EBPF_COMMON_DIMENSION_CALL,
+                                  NETDATA_APPS_IPC_SHM_GROUP,
+                                  NETDATA_EBPF_CHART_TYPE_STACKED,
+                                  "app.ebpf_shmctl_call",
+                                  20194,
+                                  update_every);
+
+        w->charts_created &= ~(1<<EBPF_MODULE_SHM_IDX);
+    }
+    pthread_mutex_unlock(&collect_data_mutex);
+}
+
+/**
+ * Obsolete global
+ *
+ * Obsolete global charts created by thread.
+ *
+ * @param em a pointer to `struct ebpf_module`
+ */
+static void ebpf_obsolete_shm_global(ebpf_module_t *em)
+{
+    ebpf_write_chart_obsolete(NETDATA_EBPF_SYSTEM_GROUP,
+                              NETDATA_SHM_GLOBAL_CHART,
+                              "",
+                              "Calls to shared memory system calls",
+                              EBPF_COMMON_DIMENSION_CALL,
+                              NETDATA_SYSTEM_IPC_SHM_SUBMENU,
+                              NETDATA_EBPF_CHART_TYPE_LINE,
+                              NULL,
+                              NETDATA_CHART_PRIO_SYSTEM_IPC_SHARED_MEM_CALLS,
+                              em->update_every);
+}
+
+/**
+ * SHM Exit
+ *
+ * Cancel child thread.
+ *
+ * @param ptr thread data.
+ */
+static void ebpf_shm_exit(void *ptr)
+{
+    ebpf_module_t *em = (ebpf_module_t *)ptr;
+
+    if (ebpf_read_shm.thread)
+        netdata_thread_cancel(*ebpf_read_shm.thread);
+
+    if (em->enabled == NETDATA_THREAD_EBPF_FUNCTION_RUNNING) {
+        pthread_mutex_lock(&lock);
+        if (em->cgroup_charts) {
+            ebpf_obsolete_shm_cgroup_charts(em);
+            fflush(stdout);
+        }
+
+        if (em->apps_charts & NETDATA_EBPF_APPS_FLAG_CHART_CREATED) {
+            ebpf_obsolete_shm_apps_charts(em);
+        }
+
+        ebpf_obsolete_shm_global(em);
+
+        fflush(stdout);
+        pthread_mutex_unlock(&lock);
+    }
+
+    ebpf_update_kernel_memory_with_vector(&plugin_statistics, em->maps, EBPF_ACTION_STAT_REMOVE);
+
+#ifdef LIBBPF_MAJOR_VERSION
+    if (shm_bpf_obj) {
+        shm_bpf__destroy(shm_bpf_obj);
+        shm_bpf_obj = NULL;
+    }
+#endif
+
+    if (em->objects) {
+        ebpf_unload_legacy_code(em->objects, em->probe_links);
+        em->objects = NULL;
+        em->probe_links = NULL;
+    }
+
+    pthread_mutex_lock(&ebpf_exit_cleanup);
+    em->enabled = NETDATA_THREAD_EBPF_STOPPED;
+    ebpf_update_stats(&plugin_statistics, em);
+    pthread_mutex_unlock(&ebpf_exit_cleanup);
+}
+
+/*****************************************************************
+ *  COLLECTOR THREAD
+ *****************************************************************/
+
+/**
+ * Apps Accumulator
+ *
+ * Sum all values read from kernel and store in the first address.
+ *
+ * @param out the vector with read values.
+ * @param maps_per_core do I need to read all cores?
+ */
+static void shm_apps_accumulator(netdata_publish_shm_t *out, int maps_per_core)
+{
+    int i, end = (maps_per_core) ? ebpf_nprocs : 1;
+    netdata_publish_shm_t *total = &out[0];
+    for (i = 1; i < end; i++) {
+        netdata_publish_shm_t *w = &out[i];
+        total->get += w->get;
+        total->at += w->at;
+        total->dt += w->dt;
+        total->ctl += w->ctl;
+    }
+}
+
+/**
+ * Update cgroup
+ *
+ * Update cgroup data based in
+ *
+ * @param maps_per_core do I need to read all cores?
+ */
+static void ebpf_update_shm_cgroup()
+{
+    netdata_publish_shm_t *cv = shm_vector;
+    size_t length = sizeof(netdata_publish_shm_t);
+
+    ebpf_cgroup_target_t *ect;
+
+    memset(cv, 0, length);
+
+    pthread_mutex_lock(&mutex_cgroup_shm);
+    for (ect = ebpf_cgroup_pids; ect; ect = ect->next) {
+        struct pid_on_target2 *pids;
+        for (pids = ect->pids; pids; pids = pids->next) {
+            int pid = pids->pid;
+            netdata_publish_shm_t *out = &pids->shm;
+            ebpf_pid_stat_t *local_pid = ebpf_get_pid_entry(pid, 0);
+            if (local_pid) {
+                netdata_publish_shm_t *in = &local_pid->shm;
+
+                memcpy(out, in, sizeof(netdata_publish_shm_t));
+            }
+        }
+    }
+    pthread_mutex_unlock(&mutex_cgroup_shm);
+}
+
+/**
+ * Read APPS table
+ *
+ * Read the apps table and store data inside the structure.
+ *
+ * @param maps_per_core do I need to read all cores?
+ */
+static void ebpf_read_shm_apps_table(int maps_per_core, int max_period)
+{
+    netdata_publish_shm_t *cv = shm_vector;
+    int fd = shm_maps[NETDATA_PID_SHM_TABLE].map_fd;
+    size_t length = sizeof(netdata_publish_shm_t);
+    if (maps_per_core)
+        length *= ebpf_nprocs;
+
+    uint32_t key = 0, next_key = 0;
+    while (bpf_map_get_next_key(fd, &key, &next_key) == 0) {
+        if (bpf_map_lookup_elem(fd, &key, cv)) {
+            goto end_shm_loop;
+        }
+
+        shm_apps_accumulator(cv, maps_per_core);
+
+        ebpf_pid_stat_t *local_pid = ebpf_get_pid_entry(key, 0);
+        if (!local_pid)
+            goto end_shm_loop;
+
+
+        netdata_publish_shm_t *publish = &local_pid->shm;
+        if (!publish->ct || publish->ct != cv->ct) {
+            memcpy(publish, &cv[0], sizeof(netdata_publish_shm_t));
+            local_pid->not_updated = 0;
+        } else if (++local_pid->not_updated >= max_period){
+            bpf_map_delete_elem(fd, &key);
+            local_pid->not_updated = 0;
+        }
+
+end_shm_loop:
+        // now that we've consumed the value, zero it out in the map.
+        memset(cv, 0, length);
+        bpf_map_update_elem(fd, &key, cv, BPF_EXIST);
+
+        key = next_key;
+    }
+}
+
+/**
+* Send global charts to netdata agent.
+*/
+static void shm_send_global()
+{
+    ebpf_write_begin_chart(NETDATA_EBPF_SYSTEM_GROUP, NETDATA_SHM_GLOBAL_CHART, "");
+    write_chart_dimension(
+        shm_publish_aggregated[NETDATA_KEY_SHMGET_CALL].dimension,
+        (long long) shm_hash_values[NETDATA_KEY_SHMGET_CALL]
+    );
+    write_chart_dimension(
+        shm_publish_aggregated[NETDATA_KEY_SHMAT_CALL].dimension,
+        (long long) shm_hash_values[NETDATA_KEY_SHMAT_CALL]
+    );
+    write_chart_dimension(
+        shm_publish_aggregated[NETDATA_KEY_SHMDT_CALL].dimension,
+        (long long) shm_hash_values[NETDATA_KEY_SHMDT_CALL]
+    );
+    write_chart_dimension(
+        shm_publish_aggregated[NETDATA_KEY_SHMCTL_CALL].dimension,
+        (long long) shm_hash_values[NETDATA_KEY_SHMCTL_CALL]
+    );
+    ebpf_write_end_chart();
+}
+
+/**
+ * Read global counter
+ *
+ * Read the table with number of calls for all functions
+ *
+ * @param stats         vector used to read data from control table.
+ * @param maps_per_core do I need to read all cores?
+ */
+static void ebpf_shm_read_global_table(netdata_idx_t *stats, int maps_per_core)
+{
+    ebpf_read_global_table_stats(shm_hash_values,
+                                 shm_values,
+                                 shm_maps[NETDATA_SHM_GLOBAL_TABLE].map_fd,
+                                 maps_per_core,
+                                 NETDATA_KEY_SHMGET_CALL,
+                                 NETDATA_SHM_END);
+
+    ebpf_read_global_table_stats(stats,
+                                 shm_values,
+                                 shm_maps[NETDATA_SHM_CONTROLLER].map_fd,
+                                 maps_per_core,
+                                 NETDATA_CONTROLLER_PID_TABLE_ADD,
+                                 NETDATA_CONTROLLER_END);
+}
+
+/**
+ * Sum values for all targets.
+ */
+static void ebpf_shm_sum_pids(netdata_publish_shm_t *shm, struct ebpf_pid_on_target *root)
+{
+    memset(shm, 0, sizeof(netdata_publish_shm_t));
+    while (root) {
+        int32_t pid = root->pid;
+        ebpf_pid_stat_t *pid_stat = ebpf_get_pid_entry(pid, 0);
+        if (pid_stat) {
+            netdata_publish_shm_t *w = &pid_stat->shm;
+            shm->get += w->get;
+            shm->at += w->at;
+            shm->dt += w->dt;
+            shm->ctl += w->ctl;
+
+            // reset for next collection.
+            w->get = 0;
+            w->at = 0;
+            w->dt = 0;
+            w->ctl = 0;
+        }
+        root = root->next;
+    }
+}
+
+/**
+ * Send data to Netdata calling auxiliary functions.
+ *
+ * @param root the target list.
+*/
+void ebpf_shm_send_apps_data(struct ebpf_target *root)
+{
+    struct ebpf_target *w;
+    pthread_mutex_lock(&collect_data_mutex);
+    for (w = root; w; w = w->next) {
+        if (unlikely(!(w->charts_created & (1<<EBPF_MODULE_SHM_IDX))))
+            continue;
+
+        ebpf_write_begin_chart(NETDATA_APP_FAMILY, w->clean_name, "_ebpf_shmget_call");
+        write_chart_dimension("calls", (long long) w->shm.get);
+        ebpf_write_end_chart();
+
+        ebpf_write_begin_chart(NETDATA_APP_FAMILY, w->clean_name, "_ebpf_shmat_call");
+        write_chart_dimension("calls", (long long) w->shm.at);
+        ebpf_write_end_chart();
+
+        ebpf_write_begin_chart(NETDATA_APP_FAMILY, w->clean_name, "_ebpf_shmdt_call");
+        write_chart_dimension("calls", (long long) w->shm.dt);
+        ebpf_write_end_chart();
+
+        ebpf_write_begin_chart(NETDATA_APP_FAMILY, w->clean_name, "_ebpf_shmctl_call");
+        write_chart_dimension("calls", (long long) w->shm.ctl);
+        ebpf_write_end_chart();
+    }
+    pthread_mutex_unlock(&collect_data_mutex);
+}
+
+/**
+ * Sum values for all targets.
+ */
+static void ebpf_shm_sum_cgroup_pids(netdata_publish_shm_t *shm, struct pid_on_target2 *root)
+{
+    netdata_publish_shm_t shmv;
+    memset(&shmv, 0, sizeof(shmv));
+    while (root) {
+        netdata_publish_shm_t *w = &root->shm;
+        shmv.get += w->get;
+        shmv.at += w->at;
+        shmv.dt += w->dt;
+        shmv.ctl += w->ctl;
+
+        root = root->next;
+    }
+
+    memcpy(shm, &shmv, sizeof(shmv));
+}
+
+/**
+ * Create specific shared memory charts
+ *
+ * Create charts for cgroup/application.
+ *
+ * @param type the chart type.
+ * @param update_every value to overwrite the update frequency set by the server.
+ */
+static void ebpf_create_specific_shm_charts(char *type, int update_every)
+{
+    ebpf_create_chart(type, NETDATA_SHMGET_CHART,
+                      "Calls to syscall shmget(2).",
+                      EBPF_COMMON_DIMENSION_CALL,
+                      NETDATA_APPS_IPC_SHM_GROUP,
+                      NETDATA_CGROUP_SHM_GET_CONTEXT,
+                      NETDATA_EBPF_CHART_TYPE_LINE,
+                      NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5800,
+                      ebpf_create_global_dimension,
+                      &shm_publish_aggregated[NETDATA_KEY_SHMGET_CALL],
+                      1,
+                      update_every,
+                      NETDATA_EBPF_MODULE_NAME_SHM);
+
+    ebpf_create_chart(type, NETDATA_SHMAT_CHART,
+                      "Calls to syscall shmat(2).",
+                      EBPF_COMMON_DIMENSION_CALL,
+                      NETDATA_APPS_IPC_SHM_GROUP,
+                      NETDATA_CGROUP_SHM_AT_CONTEXT,
+                      NETDATA_EBPF_CHART_TYPE_LINE,
+                      NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5801,
+                      ebpf_create_global_dimension,
+                      &shm_publish_aggregated[NETDATA_KEY_SHMAT_CALL],
+                      1,
+                      update_every,
+                      NETDATA_EBPF_MODULE_NAME_SHM);
+
+    ebpf_create_chart(type, NETDATA_SHMDT_CHART,
+                      "Calls to syscall shmdt(2).",
+                      EBPF_COMMON_DIMENSION_CALL,
+                      NETDATA_APPS_IPC_SHM_GROUP,
+                      NETDATA_CGROUP_SHM_DT_CONTEXT,
+                      NETDATA_EBPF_CHART_TYPE_LINE,
+                      NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5802,
+                      ebpf_create_global_dimension,
+                      &shm_publish_aggregated[NETDATA_KEY_SHMDT_CALL],
+                      1,
+                      update_every,
+                      NETDATA_EBPF_MODULE_NAME_SHM);
+
+    ebpf_create_chart(type, NETDATA_SHMCTL_CHART,
+                      "Calls to syscall shmctl(2).",
+                      EBPF_COMMON_DIMENSION_CALL,
+                      NETDATA_APPS_IPC_SHM_GROUP,
+                      NETDATA_CGROUP_SHM_CTL_CONTEXT,
+                      NETDATA_EBPF_CHART_TYPE_LINE,
+                      NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5803,
+                      ebpf_create_global_dimension,
+                      &shm_publish_aggregated[NETDATA_KEY_SHMCTL_CALL],
+                      1,
+                      update_every,
+                      NETDATA_EBPF_MODULE_NAME_SHM);
+}
+
+/**
+ * Obsolete specific shared memory charts
+ *
+ * Obsolete charts for cgroup/application.
+ *
+ * @param type the chart type.
+ * @param update_every value to overwrite the update frequency set by the server.
+ */
+static void ebpf_obsolete_specific_shm_charts(char *type, int update_every)
+{
+    ebpf_write_chart_obsolete(type, NETDATA_SHMGET_CHART,
+                              "",
+                              "Calls to syscall shmget(2).",
+                              EBPF_COMMON_DIMENSION_CALL,
+                              NETDATA_APPS_IPC_SHM_GROUP,
+                              NETDATA_EBPF_CHART_TYPE_LINE, NETDATA_CGROUP_SHM_GET_CONTEXT,
+                              NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5800, update_every);
+
+    ebpf_write_chart_obsolete(type, NETDATA_SHMAT_CHART,
+                              "",
+                              "Calls to syscall shmat(2).",
+                              EBPF_COMMON_DIMENSION_CALL,
+                              NETDATA_APPS_IPC_SHM_GROUP,
+                              NETDATA_EBPF_CHART_TYPE_LINE, NETDATA_CGROUP_SHM_AT_CONTEXT,
+                              NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5801, update_every);
+
+    ebpf_write_chart_obsolete(type, NETDATA_SHMDT_CHART,
+                              "",
+                              "Calls to syscall shmdt(2).",
+                              EBPF_COMMON_DIMENSION_CALL,
+                              NETDATA_APPS_IPC_SHM_GROUP,
+                              NETDATA_EBPF_CHART_TYPE_LINE, NETDATA_CGROUP_SHM_DT_CONTEXT,
+                              NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5802, update_every);
+
+    ebpf_write_chart_obsolete(type, NETDATA_SHMCTL_CHART,
+                              "",
+                              "Calls to syscall shmctl(2).",
+                              EBPF_COMMON_DIMENSION_CALL,
+                              NETDATA_APPS_IPC_SHM_GROUP,
+                              NETDATA_EBPF_CHART_TYPE_LINE, NETDATA_CGROUP_SHM_CTL_CONTEXT,
+                              NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5803, update_every);
+}
+
+/**
+ *  Create Systemd Swap Charts
+ *
+ *  Create charts when systemd is enabled
+ *
+ *  @param update_every value to overwrite the update frequency set by the server.
+ **/
+static void ebpf_create_systemd_shm_charts(int update_every)
+{
+    static ebpf_systemd_args_t data_shmget = {
+        .title = "Calls to syscall shmget(2).",
+        .units = EBPF_COMMON_DIMENSION_CALL,
+        .family = NETDATA_APPS_IPC_SHM_GROUP,
+        .charttype = NETDATA_EBPF_CHART_TYPE_STACKED,
+        .order = 20191,
+        .algorithm = EBPF_CHART_ALGORITHM_INCREMENTAL,
+        .context = NETDATA_SYSTEMD_SHM_GET_CONTEXT,
+        .module = NETDATA_EBPF_MODULE_NAME_SHM,
+        .update_every = 0,
+        .suffix = NETDATA_SHMGET_CHART,
+        .dimension = "calls"
+    };
+
+    static ebpf_systemd_args_t data_shmat = {
+        .title = "Calls to syscall shmat(2).",
+        .units = EBPF_COMMON_DIMENSION_CALL,
+        .family = NETDATA_APPS_IPC_SHM_GROUP,
+        .charttype = NETDATA_EBPF_CHART_TYPE_STACKED,
+        .order = 20192,
+        .algorithm = EBPF_CHART_ALGORITHM_INCREMENTAL,
+        .context = NETDATA_SYSTEMD_SHM_AT_CONTEXT,
+        .module = NETDATA_EBPF_MODULE_NAME_SHM,
+        .update_every = 0,
+        .suffix = NETDATA_SHMAT_CHART,
+        .dimension = "calls"
+    };
+
+    static ebpf_systemd_args_t data_shmdt = {
+        .title = "Calls to syscall shmdt(2).",
+        .units = EBPF_COMMON_DIMENSION_CALL,
+        .family = NETDATA_APPS_IPC_SHM_GROUP,
+        .charttype = NETDATA_EBPF_CHART_TYPE_STACKED,
+        .order = 20193,
+        .algorithm = EBPF_CHART_ALGORITHM_INCREMENTAL,
+        .context = NETDATA_SYSTEMD_SHM_DT_CONTEXT,
+        .module = NETDATA_EBPF_MODULE_NAME_SHM,
+        .update_every = 0,
+        .suffix = NETDATA_SHMDT_CHART,
+        .dimension = "calls"
+    };
+
+    static ebpf_systemd_args_t data_shmctl = {
+        .title = "Calls to syscall shmctl(2).",
+        .units = EBPF_COMMON_DIMENSION_CALL,
+        .family = NETDATA_APPS_IPC_SHM_GROUP,
+        .charttype = NETDATA_EBPF_CHART_TYPE_STACKED,
+        .order = 20194,
+        .algorithm = EBPF_CHART_ALGORITHM_INCREMENTAL,
+        .context = NETDATA_SYSTEMD_SHM_CTL_CONTEXT,
+        .module = NETDATA_EBPF_MODULE_NAME_SHM,
+        .update_every = 0,
+        .suffix = NETDATA_SHMCTL_CHART,
+        .dimension = "calls"
+    };
+
+    if (!data_shmget.update_every)
+        data_shmat.update_every = data_shmctl.update_every =
+        data_shmdt.update_every = data_shmget.update_every = update_every;
+
+    ebpf_cgroup_target_t *w;
+    for (w = ebpf_cgroup_pids; w; w = w->next) {
+        if (unlikely(!w->systemd || w->flags & NETDATA_EBPF_SERVICES_HAS_SHM_CHART))
+            continue;
+
+        data_shmat.id = data_shmctl.id = data_shmdt.id = data_shmget.id = w->name;
+        ebpf_create_charts_on_systemd(&data_shmat);
+
+        ebpf_create_charts_on_systemd(&data_shmctl);
+
+        ebpf_create_charts_on_systemd(&data_shmdt);
+
+        ebpf_create_charts_on_systemd(&data_shmget);
+
+        w->flags |= NETDATA_EBPF_SERVICES_HAS_SHM_CHART;
+    }
+}
+
+/**
+ * Send Systemd charts
+ *
+ * Send collected data to Netdata.
+ */
+static void ebpf_send_systemd_shm_charts()
+{
+    ebpf_cgroup_target_t *ect;
+    for (ect = ebpf_cgroup_pids; ect; ect = ect->next) {
+        if (unlikely(!(ect->flags & NETDATA_EBPF_SERVICES_HAS_SHM_CHART)) ) {
+            continue;
+        }
+
+        ebpf_write_begin_chart(NETDATA_SERVICE_FAMILY, ect->name, NETDATA_SHMGET_CHART);
+        write_chart_dimension("calls", (long long)ect->publish_shm.get);
+        ebpf_write_end_chart();
+
+        ebpf_write_begin_chart(NETDATA_SERVICE_FAMILY, ect->name, NETDATA_SHMAT_CHART);
+        write_chart_dimension("calls", (long long)ect->publish_shm.at);
+        ebpf_write_end_chart();
+
+        ebpf_write_begin_chart(NETDATA_SERVICE_FAMILY, ect->name, NETDATA_SHMDT_CHART);
+        write_chart_dimension("calls", (long long)ect->publish_shm.dt);
+        ebpf_write_end_chart();
+
+        ebpf_write_begin_chart(NETDATA_SERVICE_FAMILY, ect->name, NETDATA_SHMCTL_CHART);
+        write_chart_dimension("calls", (long long)ect->publish_shm.ctl);
+        ebpf_write_end_chart();
+    }
+}
+
+/*
+ * Send Specific Shared memory data
+ *
+ * Send data for specific cgroup/apps.
+ *
+ * @param type   chart type
+ * @param values structure with values that will be sent to netdata
+ */
+static void ebpf_send_specific_shm_data(char *type, netdata_publish_shm_t *values)
+{
+    ebpf_write_begin_chart(type, NETDATA_SHMGET_CHART, "");
+    write_chart_dimension(shm_publish_aggregated[NETDATA_KEY_SHMGET_CALL].name, (long long)values->get);
+    ebpf_write_end_chart();
+
+    ebpf_write_begin_chart(type, NETDATA_SHMAT_CHART, "");
+    write_chart_dimension(shm_publish_aggregated[NETDATA_KEY_SHMAT_CALL].name, (long long)values->at);
+    ebpf_write_end_chart();
+
+    ebpf_write_begin_chart(type, NETDATA_SHMDT_CHART, "");
+    write_chart_dimension(shm_publish_aggregated[NETDATA_KEY_SHMDT_CALL].name, (long long)values->dt);
+    ebpf_write_end_chart();
+
+    ebpf_write_begin_chart(type, NETDATA_SHMCTL_CHART, "");
+    write_chart_dimension(shm_publish_aggregated[NETDATA_KEY_SHMCTL_CALL].name, (long long)values->ctl);
+    ebpf_write_end_chart();
+}
+
+/**
+ * Send data to Netdata calling auxiliary functions.
+ *
+ * @param update_every value to overwrite the update frequency set by the server.
+*/
+void ebpf_shm_send_cgroup_data(int update_every)
+{
+    pthread_mutex_lock(&mutex_cgroup_shm);
+    ebpf_cgroup_target_t *ect;
+    for (ect = ebpf_cgroup_pids; ect ; ect = ect->next) {
+        ebpf_shm_sum_cgroup_pids(&ect->publish_shm, ect->pids);
+    }
+
+    if (shm_ebpf_cgroup.header->systemd_enabled) {
+        if (send_cgroup_chart) {
+            ebpf_create_systemd_shm_charts(update_every);
+        }
+
+        ebpf_send_systemd_shm_charts();
+    }
+
+    for (ect = ebpf_cgroup_pids; ect ; ect = ect->next) {
+        if (ect->systemd)
+            continue;
+
+        if (!(ect->flags & NETDATA_EBPF_CGROUP_HAS_SHM_CHART) && ect->updated) {
+            ebpf_create_specific_shm_charts(ect->name, update_every);
+            ect->flags |= NETDATA_EBPF_CGROUP_HAS_SHM_CHART;
+        }
+
+        if (ect->flags & NETDATA_EBPF_CGROUP_HAS_SHM_CHART) {
+            if (ect->updated) {
+                ebpf_send_specific_shm_data(ect->name, &ect->publish_shm);
+            } else {
+                ebpf_obsolete_specific_shm_charts(ect->name, update_every);
+                ect->flags &= ~NETDATA_EBPF_CGROUP_HAS_SWAP_CHART;
+            }
+        }
+    }
+
+    pthread_mutex_unlock(&mutex_cgroup_shm);
+}
+
+/**
+ * Resume apps data
+ */
+void ebpf_shm_resume_apps_data() {
+    struct ebpf_target *w;
+    for (w = apps_groups_root_target; w; w = w->next) {
+        if (unlikely(!(w->charts_created & (1 << EBPF_MODULE_SHM_IDX))))
+            continue;
+
+        ebpf_shm_sum_pids(&w->shm, w->root_pid);
+    }
+}
+
+/**
+ * DCstat thread
+ *
+ * Thread used to generate dcstat charts.
+ *
+ * @param ptr a pointer to `struct ebpf_module`
+ *
+ * @return It always return NULL
+ */
+void *ebpf_read_shm_thread(void *ptr)
+{
+    heartbeat_t hb;
+    heartbeat_init(&hb);
+
+    ebpf_module_t *em = (ebpf_module_t *)ptr;
+
+    int maps_per_core = em->maps_per_core;
+    int update_every = em->update_every;
+
+    int counter = update_every - 1;
+
+    uint32_t lifetime = em->lifetime;
+    uint32_t running_time = 0;
+    usec_t period = update_every * USEC_PER_SEC;
+    int max_period = update_every * EBPF_CLEANUP_FACTOR;
+    while (!ebpf_plugin_exit && running_time < lifetime) {
+        (void)heartbeat_next(&hb, period);
+        if (ebpf_plugin_exit || ++counter != update_every)
+            continue;
+
+        netdata_thread_disable_cancelability();
+
+        pthread_mutex_lock(&collect_data_mutex);
+        ebpf_read_shm_apps_table(maps_per_core, max_period);
+        ebpf_shm_resume_apps_data();
+        pthread_mutex_unlock(&collect_data_mutex);
+
+        counter = 0;
+
+        pthread_mutex_lock(&ebpf_exit_cleanup);
+        if (running_time && !em->running_time)
+            running_time = update_every;
+        else
+            running_time += update_every;
+
+        em->running_time = running_time;
+        pthread_mutex_unlock(&ebpf_exit_cleanup);
+        netdata_thread_enable_cancelability();
+    }
+
+    return NULL;
+}
+
+/**
+* Main loop for this collector.
+*/
+static void shm_collector(ebpf_module_t *em)
+{
+    int cgroups = em->cgroup_charts;
+    int update_every = em->update_every;
+    heartbeat_t hb;
+    heartbeat_init(&hb);
+    int counter = update_every - 1;
+    int maps_per_core = em->maps_per_core;
+    uint32_t running_time = 0;
+    uint32_t lifetime = em->lifetime;
+    netdata_idx_t *stats = em->hash_table_stats;
+    memset(stats, 0, sizeof(em->hash_table_stats));
+    while (!ebpf_plugin_exit && running_time < lifetime) {
+        (void)heartbeat_next(&hb, USEC_PER_SEC);
+        if (ebpf_plugin_exit || ++counter != update_every)
+            continue;
+
+        counter = 0;
+        netdata_apps_integration_flags_t apps = em->apps_charts;
+        ebpf_shm_read_global_table(stats, maps_per_core);
+        pthread_mutex_lock(&lock);
+
+        if (cgroups) {
+            ebpf_update_shm_cgroup();
+        }
+
+        shm_send_global();
+
+        if (apps & NETDATA_EBPF_APPS_FLAG_CHART_CREATED) {
+            ebpf_shm_send_apps_data(apps_groups_root_target);
+        }
+
+        if (cgroups) {
+            ebpf_shm_send_cgroup_data(update_every);
+        }
+
+        pthread_mutex_unlock(&lock);
+
+        pthread_mutex_lock(&ebpf_exit_cleanup);
+        if (running_time && !em->running_time)
+            running_time = update_every;
+        else
+            running_time += update_every;
+
+        em->running_time = running_time;
+        pthread_mutex_unlock(&ebpf_exit_cleanup);
+    }
+}
+
+/*****************************************************************
+ *  INITIALIZE THREAD
+ *****************************************************************/
+
+/**
+ * Create apps charts
+ *
+ * Call ebpf_create_chart to create the charts on apps submenu.
+ *
+ * @param em a pointer to the structure with the default values.
+ */
+void ebpf_shm_create_apps_charts(struct ebpf_module *em, void *ptr)
+{
+    struct ebpf_target *root = ptr;
+    struct ebpf_target *w;
+    int update_every = em->update_every;
+    for (w = root; w; w = w->next) {
+        if (unlikely(!w->exposed))
+            continue;
+
+        ebpf_write_chart_cmd(NETDATA_APP_FAMILY,
+                             w->clean_name,
+                             "_ebpf_shmget_call",
+                             "Calls to syscall shmget(2).",
+                             EBPF_COMMON_DIMENSION_CALL,
+                             NETDATA_APPS_IPC_SHM_GROUP,
+                             NETDATA_EBPF_CHART_TYPE_STACKED,
+                             "app.ebpf_shmget_call",
+                             20191,
+                             update_every,
+                             NETDATA_EBPF_MODULE_NAME_SHM);
+        ebpf_create_chart_labels("app_group", w->name, 1);
+        ebpf_commit_label();
+        fprintf(stdout, "DIMENSION calls '' %s 1 1\n", ebpf_algorithms[NETDATA_EBPF_INCREMENTAL_IDX]);
+
+        ebpf_write_chart_cmd(NETDATA_APP_FAMILY,
+                             w->clean_name,
+                             "_ebpf_shmat_call",
+                             "Calls to syscall shmat(2).",
+                             EBPF_COMMON_DIMENSION_CALL,
+                             NETDATA_APPS_IPC_SHM_GROUP,
+                             NETDATA_EBPF_CHART_TYPE_STACKED,
+                             "app.ebpf_shmat_call",
+                             20192,
+                             update_every,
+                             NETDATA_EBPF_MODULE_NAME_SHM);
+        ebpf_create_chart_labels("app_group", w->name, 1);
+        ebpf_commit_label();
+        fprintf(stdout, "DIMENSION calls '' %s 1 1\n", ebpf_algorithms[NETDATA_EBPF_INCREMENTAL_IDX]);
+
+        ebpf_write_chart_cmd(NETDATA_APP_FAMILY,
+                             w->clean_name,
+                             "_ebpf_shmdt_call",
+                             "Calls to syscall shmdt(2).",
+                             EBPF_COMMON_DIMENSION_CALL,
+                             NETDATA_APPS_IPC_SHM_GROUP,
+                             NETDATA_EBPF_CHART_TYPE_STACKED,
+                             "app.ebpf_shmdt_call",
+                             20193,
+                             update_every,
+                             NETDATA_EBPF_MODULE_NAME_SHM);
+        ebpf_create_chart_labels("app_group", w->name, 1);
+        ebpf_commit_label();
+        fprintf(stdout, "DIMENSION calls '' %s 1 1\n", ebpf_algorithms[NETDATA_EBPF_INCREMENTAL_IDX]);
+
+        ebpf_write_chart_cmd(NETDATA_APP_FAMILY,
+                             w->clean_name,
+                             "_ebpf_shmctl_call",
+                             "Calls to syscall shmctl(2).",
+                             EBPF_COMMON_DIMENSION_CALL,
+                             NETDATA_APPS_IPC_SHM_GROUP,
+                             NETDATA_EBPF_CHART_TYPE_STACKED,
+                             "app.ebpf_shmctl_call",
+                             20194,
+                             update_every,
+                             NETDATA_EBPF_MODULE_NAME_SHM);
+        ebpf_create_chart_labels("app_group", w->name, 1);
+        ebpf_commit_label();
+        fprintf(stdout, "DIMENSION calls '' %s 1 1\n", ebpf_algorithms[NETDATA_EBPF_INCREMENTAL_IDX]);
+
+        w->charts_created |= 1<<EBPF_MODULE_SHM_IDX;
+    }
+
+    em->apps_charts |= NETDATA_EBPF_APPS_FLAG_CHART_CREATED;
+}
+
+/**
+ * Allocate vectors used with this thread.
+ *
+ * We are not testing the return, because callocz does this and shutdown the software
+ * case it was not possible to allocate.
+ *
+ * @param apps is apps enabled?
+ */
+static void ebpf_shm_allocate_global_vectors(int apps)
+{
+    UNUSED(apps);
+    shm_vector = callocz((size_t)ebpf_nprocs, sizeof(netdata_publish_shm_t));
+    shm_values = callocz((size_t)ebpf_nprocs, sizeof(netdata_idx_t));
+
+    memset(shm_hash_values, 0, sizeof(shm_hash_values));
+}
+
+/*****************************************************************
+ *  MAIN THREAD
+ *****************************************************************/
+
+/**
+ * Create global charts
+ *
+ * Call ebpf_create_chart to create the charts for the collector.
+ *
+ * @param update_every value to overwrite the update frequency set by the server.
+ */
+static void ebpf_create_shm_charts(int update_every)
+{
+    ebpf_create_chart(
+        NETDATA_EBPF_SYSTEM_GROUP,
+        NETDATA_SHM_GLOBAL_CHART,
+        "Calls to shared memory system calls",
+        EBPF_COMMON_DIMENSION_CALL,
+        NETDATA_SYSTEM_IPC_SHM_SUBMENU,
+        NULL,
+        NETDATA_EBPF_CHART_TYPE_LINE,
+        NETDATA_CHART_PRIO_SYSTEM_IPC_SHARED_MEM_CALLS,
+        ebpf_create_global_dimension,
+        shm_publish_aggregated,
+        NETDATA_SHM_END,
+        update_every, NETDATA_EBPF_MODULE_NAME_SHM
+    );
+
+    fflush(stdout);
+}
+
+/*
+ * Load BPF
+ *
+ * Load BPF files.
+ *
+ * @param em the structure with configuration
+ */
+static int ebpf_shm_load_bpf(ebpf_module_t *em)
+{
+#ifdef LIBBPF_MAJOR_VERSION
+    ebpf_define_map_type(em->maps, em->maps_per_core, running_on_kernel);
+#endif
+
+    int ret = 0;
+
+    ebpf_adjust_apps_cgroup(em, em->targets[NETDATA_KEY_SHMGET_CALL].mode);
+    if (em->load & EBPF_LOAD_LEGACY) {
+        em->probe_links = ebpf_load_program(ebpf_plugin_dir, em, running_on_kernel, isrh, &em->objects);
+        if (!em->probe_links) {
+            ret = -1;
+        }
+    }
+#ifdef LIBBPF_MAJOR_VERSION
+    else {
+        shm_bpf_obj = shm_bpf__open();
+        if (!shm_bpf_obj)
+            ret = -1;
+        else
+            ret = ebpf_shm_load_and_attach(shm_bpf_obj, em);
+    }
+#endif
+
+
+    if (ret)
+        netdata_log_error("%s %s", EBPF_DEFAULT_ERROR_MSG, em->info.thread_name);
+
+    return ret;
+}
+
+/**
+ * Shared memory thread.
+ *
+ * @param ptr a pointer to `struct ebpf_module`
+ * @return It always return NULL
+ */
+void *ebpf_shm_thread(void *ptr)
+{
+    netdata_thread_cleanup_push(ebpf_shm_exit, ptr);
+
+    ebpf_module_t *em = (ebpf_module_t *)ptr;
+    em->maps = shm_maps;
+
+    ebpf_update_pid_table(&shm_maps[NETDATA_PID_SHM_TABLE], em);
+
+#ifdef LIBBPF_MAJOR_VERSION
+    ebpf_adjust_thread_load(em, default_btf);
+#endif
+    if (ebpf_shm_load_bpf(em)) {
+        goto endshm;
+    }
+
+    ebpf_shm_allocate_global_vectors(em->apps_charts);
+
+    int algorithms[NETDATA_SHM_END] = {
+        NETDATA_EBPF_INCREMENTAL_IDX,
+        NETDATA_EBPF_INCREMENTAL_IDX,
+        NETDATA_EBPF_INCREMENTAL_IDX,
+        NETDATA_EBPF_INCREMENTAL_IDX
+    };
+    ebpf_global_labels(
+        shm_aggregated_data,
+        shm_publish_aggregated,
+        shm_dimension_name,
+        shm_dimension_name,
+        algorithms,
+        NETDATA_SHM_END
+    );
+
+    pthread_mutex_lock(&lock);
+    ebpf_create_shm_charts(em->update_every);
+    ebpf_update_stats(&plugin_statistics, em);
+    ebpf_update_kernel_memory_with_vector(&plugin_statistics, em->maps, EBPF_ACTION_STAT_ADD);
+    pthread_mutex_unlock(&lock);
+
+    ebpf_read_shm.thread = mallocz(sizeof(netdata_thread_t));
+    netdata_thread_create(ebpf_read_shm.thread,
+                          ebpf_read_shm.name,
+                          NETDATA_THREAD_OPTION_DEFAULT,
+                          ebpf_read_shm_thread,
+                          em);
+
+    shm_collector(em);
+
+endshm:
+    ebpf_update_disabled_plugin_stats(em);
+
+    netdata_thread_cleanup_pop(1);
+    return NULL;
+}