Adding upstream version 1.44.3.upstream/1.44.3upstream

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

1 files changed, 1030 insertions, 0 deletions

diff --git a/collectors/ebpf.plugin/ebpf_swap.c b/collectors/ebpf.plugin/ebpf_swap.c
new file mode 100644
index 00000000..fb007f92
--- /dev/null
+++ b/collectors/ebpf.plugin/ebpf_swap.c
@@ -0,0 +1,1030 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "ebpf.h"
+#include "ebpf_swap.h"
+
+static char *swap_dimension_name[NETDATA_SWAP_END] = { "read", "write" };
+static netdata_syscall_stat_t swap_aggregated_data[NETDATA_SWAP_END];
+static netdata_publish_syscall_t swap_publish_aggregated[NETDATA_SWAP_END];
+
+static netdata_idx_t swap_hash_values[NETDATA_SWAP_END];
+static netdata_idx_t *swap_values = NULL;
+
+netdata_publish_swap_t *swap_vector = NULL;
+
+struct config swap_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 swap_maps[] = {{.name = "tbl_pid_swap", .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 = "swap_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_swap", .internal_input = NETDATA_SWAP_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,
+#ifdef LIBBPF_MAJOR_VERSION
+                                         .map_type = BPF_MAP_TYPE_PERCPU_ARRAY
+#endif
+                                        }};
+
+netdata_ebpf_targets_t swap_targets[] = { {.name = "swap_readpage", .mode = EBPF_LOAD_TRAMPOLINE},
+                                           {.name = "swap_writepage", .mode = EBPF_LOAD_TRAMPOLINE},
+                                           {.name = NULL, .mode = EBPF_LOAD_TRAMPOLINE}};
+
+#ifdef LIBBPF_MAJOR_VERSION
+/**
+ * Disable probe
+ *
+ * Disable all probes to use exclusively another method.
+ *
+ * @param obj is the main structure for bpf objects
+ */
+static void ebpf_swap_disable_probe(struct swap_bpf *obj)
+{
+    bpf_program__set_autoload(obj->progs.netdata_swap_readpage_probe, false);
+    bpf_program__set_autoload(obj->progs.netdata_swap_writepage_probe, false);
+}
+
+/*
+ * Disable trampoline
+ *
+ * Disable all trampoline to use exclusively another method.
+ *
+ * @param obj is the main structure for bpf objects.
+ */
+static void ebpf_swap_disable_trampoline(struct swap_bpf *obj)
+{
+    bpf_program__set_autoload(obj->progs.netdata_swap_readpage_fentry, false);
+    bpf_program__set_autoload(obj->progs.netdata_swap_writepage_fentry, false);
+    bpf_program__set_autoload(obj->progs.netdata_release_task_fentry, false);
+}
+
+/**
+ * Set trampoline target
+ *
+ * Set the targets we will monitor.
+ *
+ * @param obj is the main structure for bpf objects.
+ */
+static void ebpf_swap_set_trampoline_target(struct swap_bpf *obj)
+{
+    bpf_program__set_attach_target(obj->progs.netdata_swap_readpage_fentry, 0,
+                                   swap_targets[NETDATA_KEY_SWAP_READPAGE_CALL].name);
+
+    bpf_program__set_attach_target(obj->progs.netdata_swap_writepage_fentry, 0,
+                                   swap_targets[NETDATA_KEY_SWAP_WRITEPAGE_CALL].name);
+
+    bpf_program__set_attach_target(obj->progs.netdata_release_task_fentry, 0,
+                                   EBPF_COMMON_FNCT_CLEAN_UP);
+}
+
+/**
+ * Mount 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_swap_attach_kprobe(struct swap_bpf *obj)
+{
+    obj->links.netdata_swap_readpage_probe = bpf_program__attach_kprobe(obj->progs.netdata_swap_readpage_probe,
+                                                                        false,
+                                                                        swap_targets[NETDATA_KEY_SWAP_READPAGE_CALL].name);
+    int ret = libbpf_get_error(obj->links.netdata_swap_readpage_probe);
+    if (ret)
+        return -1;
+
+    obj->links.netdata_swap_writepage_probe = bpf_program__attach_kprobe(obj->progs.netdata_swap_writepage_probe,
+                                                                         false,
+                                                                         swap_targets[NETDATA_KEY_SWAP_WRITEPAGE_CALL].name);
+    ret = libbpf_get_error(obj->links.netdata_swap_writepage_probe);
+    if (ret)
+        return -1;
+
+    return 0;
+}
+
+/**
+ * Set hash tables
+ *
+ * Set the values for maps according the value given by kernel.
+ *
+ * @param obj is the main structure for bpf objects.
+ */
+static void ebpf_swap_set_hash_tables(struct swap_bpf *obj)
+{
+    swap_maps[NETDATA_PID_SWAP_TABLE].map_fd = bpf_map__fd(obj->maps.tbl_pid_swap);
+    swap_maps[NETDATA_SWAP_CONTROLLER].map_fd = bpf_map__fd(obj->maps.swap_ctrl);
+    swap_maps[NETDATA_SWAP_GLOBAL_TABLE].map_fd = bpf_map__fd(obj->maps.tbl_swap);
+}
+
+/**
+ * Adjust Map
+ *
+ * Resize maps according input from users.
+ *
+ * @param obj is the main structure for bpf objects.
+ * @param em  structure with configuration
+ */
+static void ebpf_swap_adjust_map(struct swap_bpf *obj, ebpf_module_t *em)
+{
+    ebpf_update_map_size(obj->maps.tbl_pid_swap, &swap_maps[NETDATA_PID_SWAP_TABLE],
+                         em, bpf_map__name(obj->maps.tbl_pid_swap));
+
+    ebpf_update_map_type(obj->maps.tbl_pid_swap, &swap_maps[NETDATA_PID_SWAP_TABLE]);
+    ebpf_update_map_type(obj->maps.tbl_swap, &swap_maps[NETDATA_SWAP_GLOBAL_TABLE]);
+    ebpf_update_map_type(obj->maps.swap_ctrl, &swap_maps[NETDATA_SWAP_CONTROLLER]);
+}
+
+/**
+ *  Disable Release Task
+ *
+ *  Disable release task when apps is not enabled.
+ *
+ *  @param obj is the main structure for bpf objects.
+ */
+static void ebpf_swap_disable_release_task(struct swap_bpf *obj)
+{
+    bpf_program__set_autoload(obj->progs.netdata_release_task_fentry, false);
+}
+
+/**
+ * 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_swap_load_and_attach(struct swap_bpf *obj, ebpf_module_t *em)
+{
+    netdata_ebpf_targets_t *mt = em->targets;
+    netdata_ebpf_program_loaded_t test = mt[NETDATA_KEY_SWAP_READPAGE_CALL].mode;
+
+    if (test == EBPF_LOAD_TRAMPOLINE) {
+        ebpf_swap_disable_probe(obj);
+
+        ebpf_swap_set_trampoline_target(obj);
+    } else {
+        ebpf_swap_disable_trampoline(obj);
+    }
+
+    ebpf_swap_adjust_map(obj, em);
+
+    if (!em->apps_charts && !em->cgroup_charts)
+        ebpf_swap_disable_release_task(obj);
+
+    int ret = swap_bpf__load(obj);
+    if (ret) {
+        return ret;
+    }
+
+    ret = (test == EBPF_LOAD_TRAMPOLINE) ? swap_bpf__attach(obj) : ebpf_swap_attach_kprobe(obj);
+    if (!ret) {
+        ebpf_swap_set_hash_tables(obj);
+
+        ebpf_update_controller(swap_maps[NETDATA_SWAP_CONTROLLER].map_fd, em);
+    }
+
+    return ret;
+}
+#endif
+
+/*****************************************************************
+ *
+ *  FUNCTIONS TO CLOSE THE THREAD
+ *
+ *****************************************************************/
+
+static void ebpf_obsolete_specific_swap_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_swap_services(ebpf_module_t *em)
+{
+    ebpf_write_chart_obsolete(NETDATA_SERVICE_FAMILY,
+                              NETDATA_MEM_SWAP_READ_CHART,
+                              "",
+                              "Calls to function swap_readpage.",
+                              EBPF_COMMON_DIMENSION_CALL,
+                              NETDATA_SYSTEM_CGROUP_SWAP_SUBMENU,
+                              NETDATA_EBPF_CHART_TYPE_LINE,
+                              NETDATA_CGROUP_SWAP_READ_CONTEXT,
+                              NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5100,
+                              em->update_every);
+
+    ebpf_write_chart_obsolete(NETDATA_SERVICE_FAMILY,
+                              NETDATA_MEM_SWAP_WRITE_CHART,
+                              "",
+                              "Calls to function swap_writepage.",
+                              EBPF_COMMON_DIMENSION_CALL,
+                              NETDATA_SYSTEM_CGROUP_SWAP_SUBMENU,
+                              NETDATA_EBPF_CHART_TYPE_LINE,
+                              NETDATA_CGROUP_SWAP_WRITE_CONTEXT,
+                              NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5101,
+                              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_swap_cgroup_charts(ebpf_module_t *em) {
+    pthread_mutex_lock(&mutex_cgroup_shm);
+
+    ebpf_obsolete_swap_services(em);
+
+    ebpf_cgroup_target_t *ect;
+    for (ect = ebpf_cgroup_pids; ect ; ect = ect->next) {
+        if (ect->systemd)
+            continue;
+
+        ebpf_obsolete_specific_swap_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_swap_apps_charts(struct ebpf_module *em)
+{
+    struct ebpf_target *w;
+    int update_every = em->update_every;
+    for (w = apps_groups_root_target; w; w = w->next) {
+        if (unlikely(!(w->charts_created & (1<<EBPF_MODULE_SWAP_IDX))))
+            continue;
+
+        ebpf_write_chart_obsolete(NETDATA_APP_FAMILY,
+                                  w->clean_name,
+                                  "_ebpf_call_swap_readpage",
+                                  "Calls to function swap_readpage.",
+                                  EBPF_COMMON_DIMENSION_CALL,
+                                  NETDATA_EBPF_MEMORY_GROUP,
+                                  NETDATA_EBPF_CHART_TYPE_STACKED,
+                                  "app.ebpf_call_swap_readpage",
+                                  20070,
+                                  update_every);
+
+        ebpf_write_chart_obsolete(NETDATA_APP_FAMILY,
+                                  w->clean_name,
+                                  "_ebpf_call_swap_writepage",
+                                  "Calls to function swap_writepage.",
+                                  EBPF_COMMON_DIMENSION_CALL,
+                                  NETDATA_EBPF_MEMORY_GROUP,
+                                  NETDATA_EBPF_CHART_TYPE_STACKED,
+                                  "app.ebpf_call_swap_writepage",
+                                  20071,
+                                  update_every);
+        w->charts_created &= ~(1<<EBPF_MODULE_SWAP_IDX);
+    }
+}
+
+/**
+ * Obsolete global
+ *
+ * Obsolete global charts created by thread.
+ *
+ * @param em a pointer to `struct ebpf_module`
+ */
+static void ebpf_obsolete_swap_global(ebpf_module_t *em)
+{
+    ebpf_write_chart_obsolete(NETDATA_EBPF_MEMORY_GROUP,
+                              NETDATA_MEM_SWAP_CHART,
+                              "",
+                              "Calls to access swap memory",
+                              EBPF_COMMON_DIMENSION_CALL, NETDATA_SYSTEM_SWAP_SUBMENU,
+                              NETDATA_EBPF_CHART_TYPE_LINE,
+                              NULL,
+                              NETDATA_CHART_PRIO_MEM_SWAP_CALLS,
+                              em->update_every);
+}
+
+/**
+ * Swap exit
+ *
+ * Cancel thread and exit.
+ *
+ * @param ptr thread data.
+ */
+static void ebpf_swap_exit(void *ptr)
+{
+    ebpf_module_t *em = (ebpf_module_t *)ptr;
+
+    if (em->enabled == NETDATA_THREAD_EBPF_FUNCTION_RUNNING) {
+        pthread_mutex_lock(&lock);
+        if (em->cgroup_charts) {
+            ebpf_obsolete_swap_cgroup_charts(em);
+            fflush(stdout);
+        }
+
+        if (em->apps_charts & NETDATA_EBPF_APPS_FLAG_CHART_CREATED) {
+            ebpf_obsolete_swap_apps_charts(em);
+        }
+
+        ebpf_obsolete_swap_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 (bpf_obj) {
+        swap_bpf__destroy(bpf_obj);
+        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 swap_apps_accumulator(netdata_publish_swap_t *out, int maps_per_core)
+{
+    int i, end = (maps_per_core) ? ebpf_nprocs : 1;
+    netdata_publish_swap_t *total = &out[0];
+    for (i = 1; i < end; i++) {
+        netdata_publish_swap_t *w = &out[i];
+        total->write += w->write;
+        total->read += w->read;
+    }
+}
+
+/**
+ * Fill PID
+ *
+ * Fill PID structures
+ *
+ * @param current_pid pid that we are collecting data
+ * @param out         values read from hash tables;
+ */
+static void swap_fill_pid(uint32_t current_pid, netdata_publish_swap_t *publish)
+{
+    netdata_publish_swap_t *curr = swap_pid[current_pid];
+    if (!curr) {
+        curr = callocz(1, sizeof(netdata_publish_swap_t));
+        swap_pid[current_pid] = curr;
+    }
+
+    memcpy(curr, publish, sizeof(netdata_publish_swap_t));
+}
+
+/**
+ * Update cgroup
+ *
+ * Update cgroup data based in
+ *
+ * @param maps_per_core do I need to read all cores?
+ */
+static void ebpf_update_swap_cgroup(int maps_per_core)
+{
+    ebpf_cgroup_target_t *ect ;
+    netdata_publish_swap_t *cv = swap_vector;
+    int fd = swap_maps[NETDATA_PID_SWAP_TABLE].map_fd;
+    size_t length = sizeof(netdata_publish_swap_t);
+    if (maps_per_core)
+        length *= ebpf_nprocs;
+    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_swap_t *out = &pids->swap;
+            if (likely(swap_pid) && swap_pid[pid]) {
+                netdata_publish_swap_t *in = swap_pid[pid];
+
+                memcpy(out, in, sizeof(netdata_publish_swap_t));
+            } else {
+                memset(cv, 0, length);
+                if (!bpf_map_lookup_elem(fd, &pid, cv)) {
+                    swap_apps_accumulator(cv, maps_per_core);
+
+                    memcpy(out, cv, sizeof(netdata_publish_swap_t));
+
+                    // We are cleaning to avoid passing data read from one process to other.
+                    memset(cv, 0, length);
+                }
+            }
+        }
+    }
+    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 read_swap_apps_table(int maps_per_core)
+{
+    netdata_publish_swap_t *cv = swap_vector;
+    uint32_t key;
+    struct ebpf_pid_stat *pids = ebpf_root_of_pids;
+    int fd = swap_maps[NETDATA_PID_SWAP_TABLE].map_fd;
+    size_t length = sizeof(netdata_publish_swap_t);
+    if (maps_per_core)
+        length *= ebpf_nprocs;
+    while (pids) {
+        key = pids->pid;
+
+        if (bpf_map_lookup_elem(fd, &key, cv)) {
+            pids = pids->next;
+            continue;
+        }
+
+        swap_apps_accumulator(cv, maps_per_core);
+
+        swap_fill_pid(key, cv);
+
+        // We are cleaning to avoid passing data read from one process to other.
+        memset(cv, 0, length);
+
+        pids = pids->next;
+    }
+}
+
+/**
+* Send global
+*
+* Send global charts to Netdata
+*/
+static void swap_send_global()
+{
+    write_io_chart(NETDATA_MEM_SWAP_CHART, NETDATA_EBPF_MEMORY_GROUP,
+                   swap_publish_aggregated[NETDATA_KEY_SWAP_WRITEPAGE_CALL].dimension,
+                   (long long) swap_hash_values[NETDATA_KEY_SWAP_WRITEPAGE_CALL],
+                   swap_publish_aggregated[NETDATA_KEY_SWAP_READPAGE_CALL].dimension,
+                   (long long) swap_hash_values[NETDATA_KEY_SWAP_READPAGE_CALL]);
+}
+
+/**
+ * Read global counter
+ *
+ * Read the table with number of calls to 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_swap_read_global_table(netdata_idx_t *stats, int maps_per_core)
+{
+    ebpf_read_global_table_stats(swap_hash_values,
+                                 swap_values,
+                                 swap_maps[NETDATA_SWAP_GLOBAL_TABLE].map_fd,
+                                 maps_per_core,
+                                 NETDATA_KEY_SWAP_READPAGE_CALL,
+                                 NETDATA_SWAP_END);
+
+    ebpf_read_global_table_stats(stats,
+                                 swap_values,
+                                 swap_maps[NETDATA_SWAP_CONTROLLER].map_fd,
+                                 maps_per_core,
+                                 NETDATA_CONTROLLER_PID_TABLE_ADD,
+                                 NETDATA_CONTROLLER_END);
+}
+
+/**
+ * Sum PIDs
+ *
+ * Sum values for all targets.
+ *
+ * @param swap
+ * @param root
+ */
+static void ebpf_swap_sum_pids(netdata_publish_swap_t *swap, struct ebpf_pid_on_target *root)
+{
+    uint64_t local_read = 0;
+    uint64_t local_write = 0;
+
+    while (root) {
+        int32_t pid = root->pid;
+        netdata_publish_swap_t *w = swap_pid[pid];
+        if (w) {
+            local_write += w->write;
+            local_read += w->read;
+        }
+        root = root->next;
+    }
+
+    // These conditions were added, because we are using incremental algorithm
+    swap->write = (local_write >= swap->write) ? local_write : swap->write;
+    swap->read = (local_read >= swap->read) ? local_read : swap->read;
+}
+
+/**
+ * Send data to Netdata calling auxiliary functions.
+ *
+ * @param root the target list.
+*/
+void ebpf_swap_send_apps_data(struct ebpf_target *root)
+{
+    struct ebpf_target *w;
+    for (w = root; w; w = w->next) {
+        if (unlikely(!(w->charts_created & (1<<EBPF_MODULE_SWAP_IDX))))
+            continue;
+
+        ebpf_swap_sum_pids(&w->swap, w->root_pid);
+
+        ebpf_write_begin_chart(NETDATA_APP_FAMILY, w->clean_name, "_ebpf_call_swap_readpage");
+        write_chart_dimension("calls", (long long) w->swap.read);
+        ebpf_write_end_chart();
+
+        ebpf_write_begin_chart(NETDATA_APP_FAMILY, w->clean_name, "_ebpf_call_swap_writepage");
+        write_chart_dimension("calls", (long long) w->swap.write);
+        ebpf_write_end_chart();
+    }
+}
+
+/**
+ * Sum PIDs
+ *
+ * Sum values for all targets.
+ *
+ * @param swap
+ * @param root
+ */
+static void ebpf_swap_sum_cgroup_pids(netdata_publish_swap_t *swap, struct pid_on_target2 *pids)
+{
+    uint64_t local_read = 0;
+    uint64_t local_write = 0;
+
+    while (pids) {
+        netdata_publish_swap_t *w = &pids->swap;
+        local_write += w->write;
+        local_read += w->read;
+
+        pids = pids->next;
+    }
+
+    // These conditions were added, because we are using incremental algorithm
+    swap->write = (local_write >= swap->write) ? local_write : swap->write;
+    swap->read = (local_read >= swap->read) ? local_read : swap->read;
+}
+
+/**
+ * Send Systemd charts
+ *
+ * Send collected data to Netdata.
+ */
+static void ebpf_send_systemd_swap_charts()
+{
+    ebpf_cgroup_target_t *ect;
+    ebpf_write_begin_chart(NETDATA_SERVICE_FAMILY, NETDATA_MEM_SWAP_READ_CHART, "");
+    for (ect = ebpf_cgroup_pids; ect ; ect = ect->next) {
+        if (unlikely(ect->systemd) && unlikely(ect->updated)) {
+            write_chart_dimension(ect->name, (long long) ect->publish_systemd_swap.read);
+        }
+    }
+    ebpf_write_end_chart();
+
+    ebpf_write_begin_chart(NETDATA_SERVICE_FAMILY, NETDATA_MEM_SWAP_WRITE_CHART, "");
+    for (ect = ebpf_cgroup_pids; ect ; ect = ect->next) {
+        if (unlikely(ect->systemd) && unlikely(ect->updated)) {
+            write_chart_dimension(ect->name, (long long) ect->publish_systemd_swap.write);
+        }
+    }
+    ebpf_write_end_chart();
+}
+
+/**
+ * Create specific swap 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_swap_charts(char *type, int update_every)
+{
+    ebpf_create_chart(type, NETDATA_MEM_SWAP_READ_CHART,
+                      "Calls to function swap_readpage.",
+                      EBPF_COMMON_DIMENSION_CALL, NETDATA_SYSTEM_CGROUP_SWAP_SUBMENU,
+                      NETDATA_CGROUP_SWAP_READ_CONTEXT, NETDATA_EBPF_CHART_TYPE_LINE,
+                      NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5100,
+                      ebpf_create_global_dimension,
+                      swap_publish_aggregated, 1, update_every, NETDATA_EBPF_MODULE_NAME_SWAP);
+
+    ebpf_create_chart(type, NETDATA_MEM_SWAP_WRITE_CHART,
+                      "Calls to function swap_writepage.",
+                      EBPF_COMMON_DIMENSION_CALL, NETDATA_SYSTEM_CGROUP_SWAP_SUBMENU,
+                      NETDATA_CGROUP_SWAP_WRITE_CONTEXT, NETDATA_EBPF_CHART_TYPE_LINE,
+                      NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5101,
+                      ebpf_create_global_dimension,
+                      &swap_publish_aggregated[NETDATA_KEY_SWAP_WRITEPAGE_CALL], 1,
+                      update_every, NETDATA_EBPF_MODULE_NAME_SWAP);
+}
+
+/**
+ * Create specific swap 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_obsolete_specific_swap_charts(char *type, int update_every)
+{
+    ebpf_write_chart_obsolete(type, NETDATA_MEM_SWAP_READ_CHART, "", "Calls to function swap_readpage.",
+                              EBPF_COMMON_DIMENSION_CALL, NETDATA_SYSTEM_CGROUP_SWAP_SUBMENU,
+                              NETDATA_EBPF_CHART_TYPE_LINE, NETDATA_CGROUP_SWAP_READ_CONTEXT,
+                              NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5100, update_every);
+
+    ebpf_write_chart_obsolete(type, NETDATA_MEM_SWAP_WRITE_CHART, "",  "Calls to function swap_writepage.",
+                              EBPF_COMMON_DIMENSION_CALL, NETDATA_SYSTEM_CGROUP_SWAP_SUBMENU,
+                              NETDATA_EBPF_CHART_TYPE_LINE, NETDATA_CGROUP_SWAP_WRITE_CONTEXT,
+                              NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5101, update_every);
+}
+
+/*
+ * Send Specific Swap 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_swap_data(char *type, netdata_publish_swap_t *values)
+{
+    ebpf_write_begin_chart(type, NETDATA_MEM_SWAP_READ_CHART, "");
+    write_chart_dimension(swap_publish_aggregated[NETDATA_KEY_SWAP_READPAGE_CALL].name, (long long) values->read);
+    ebpf_write_end_chart();
+
+    ebpf_write_begin_chart(type, NETDATA_MEM_SWAP_WRITE_CHART, "");
+    write_chart_dimension(swap_publish_aggregated[NETDATA_KEY_SWAP_WRITEPAGE_CALL].name, (long long) values->write);
+    ebpf_write_end_chart();
+}
+
+/**
+ *  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_swap_charts(int update_every)
+{
+    ebpf_create_charts_on_systemd(NETDATA_MEM_SWAP_READ_CHART,
+                                  "Calls to swap_readpage.",
+                                  EBPF_COMMON_DIMENSION_CALL, NETDATA_SYSTEM_CGROUP_SWAP_SUBMENU,
+                                  NETDATA_EBPF_CHART_TYPE_STACKED, 20191,
+                                  ebpf_algorithms[NETDATA_EBPF_INCREMENTAL_IDX], NETDATA_SYSTEMD_SWAP_READ_CONTEXT,
+                                  NETDATA_EBPF_MODULE_NAME_SWAP, update_every);
+
+    ebpf_create_charts_on_systemd(NETDATA_MEM_SWAP_WRITE_CHART,
+                                  "Calls to function swap_writepage.",
+                                  EBPF_COMMON_DIMENSION_CALL, NETDATA_SYSTEM_CGROUP_SWAP_SUBMENU,
+                                  NETDATA_EBPF_CHART_TYPE_STACKED, 20192,
+                                  ebpf_algorithms[NETDATA_EBPF_INCREMENTAL_IDX], NETDATA_SYSTEMD_SWAP_WRITE_CONTEXT,
+                                  NETDATA_EBPF_MODULE_NAME_SWAP, update_every);
+}
+
+/**
+ * Send data to Netdata calling auxiliary functions.
+ *
+ * @param update_every value to overwrite the update frequency set by the server.
+*/
+void ebpf_swap_send_cgroup_data(int update_every)
+{
+    if (!ebpf_cgroup_pids)
+        return;
+
+    pthread_mutex_lock(&mutex_cgroup_shm);
+    ebpf_cgroup_target_t *ect;
+    for (ect = ebpf_cgroup_pids; ect ; ect = ect->next) {
+        ebpf_swap_sum_cgroup_pids(&ect->publish_systemd_swap, ect->pids);
+    }
+
+    int has_systemd = shm_ebpf_cgroup.header->systemd_enabled;
+
+    if (has_systemd) {
+        if (send_cgroup_chart) {
+            ebpf_create_systemd_swap_charts(update_every);
+            fflush(stdout);
+        }
+        ebpf_send_systemd_swap_charts();
+    }
+
+    for (ect = ebpf_cgroup_pids; ect ; ect = ect->next) {
+        if (ect->systemd)
+            continue;
+
+        if (!(ect->flags & NETDATA_EBPF_CGROUP_HAS_SWAP_CHART) && ect->updated) {
+            ebpf_create_specific_swap_charts(ect->name, update_every);
+            ect->flags |= NETDATA_EBPF_CGROUP_HAS_SWAP_CHART;
+        }
+
+        if (ect->flags & NETDATA_EBPF_CGROUP_HAS_SWAP_CHART) {
+            if (ect->updated) {
+                ebpf_send_specific_swap_data(ect->name, &ect->publish_systemd_swap);
+            } else {
+                ebpf_obsolete_specific_swap_charts(ect->name, update_every);
+                ect->flags &= ~NETDATA_EBPF_CGROUP_HAS_SWAP_CHART;
+            }
+        }
+    }
+
+    pthread_mutex_unlock(&mutex_cgroup_shm);
+}
+
+/**
+* Main loop for this collector.
+*/
+static void swap_collector(ebpf_module_t *em)
+{
+    int cgroup = 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_swap_read_global_table(stats, maps_per_core);
+        pthread_mutex_lock(&collect_data_mutex);
+        if (apps)
+            read_swap_apps_table(maps_per_core);
+
+        if (cgroup)
+            ebpf_update_swap_cgroup(maps_per_core);
+
+        pthread_mutex_lock(&lock);
+
+        swap_send_global();
+
+        if (apps & NETDATA_EBPF_APPS_FLAG_CHART_CREATED)
+            ebpf_swap_send_apps_data(apps_groups_root_target);
+
+        if (cgroup)
+            ebpf_swap_send_cgroup_data(update_every);
+
+        pthread_mutex_unlock(&lock);
+        pthread_mutex_unlock(&collect_data_mutex);
+
+        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_swap_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_call_swap_readpage",
+                             "Calls to function swap_readpage.",
+                             EBPF_COMMON_DIMENSION_CALL,
+                             NETDATA_EBPF_MEMORY_GROUP,
+                             NETDATA_EBPF_CHART_TYPE_STACKED,
+                             "app.ebpf_call_swap_readpage",
+                             20070,
+                             update_every,
+                             NETDATA_EBPF_MODULE_NAME_SWAP);
+        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_call_swap_writepage",
+                             "Calls to function swap_writepage.",
+                             EBPF_COMMON_DIMENSION_CALL,
+                             NETDATA_EBPF_MEMORY_GROUP,
+                             NETDATA_EBPF_CHART_TYPE_STACKED,
+                             "app.ebpf_call_swap_writepage",
+                             20071,
+                             update_every,
+                             NETDATA_EBPF_MODULE_NAME_SWAP);
+        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_SWAP_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_swap_allocate_global_vectors(int apps)
+{
+    if (apps)
+        swap_pid = callocz((size_t)pid_max, sizeof(netdata_publish_swap_t *));
+
+    swap_vector = callocz((size_t)ebpf_nprocs, sizeof(netdata_publish_swap_t));
+
+    swap_values = callocz((size_t)ebpf_nprocs, sizeof(netdata_idx_t));
+
+    memset(swap_hash_values, 0, sizeof(swap_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_swap_charts(int update_every)
+{
+    ebpf_create_chart(NETDATA_EBPF_MEMORY_GROUP, NETDATA_MEM_SWAP_CHART,
+                      "Calls to access swap memory",
+                      EBPF_COMMON_DIMENSION_CALL, NETDATA_SYSTEM_SWAP_SUBMENU,
+                      NULL,
+                      NETDATA_EBPF_CHART_TYPE_LINE,
+                      NETDATA_CHART_PRIO_MEM_SWAP_CALLS,
+                      ebpf_create_global_dimension,
+                      swap_publish_aggregated, NETDATA_SWAP_END,
+                      update_every, NETDATA_EBPF_MODULE_NAME_SWAP);
+
+    fflush(stdout);
+}
+
+/*
+ * Load BPF
+ *
+ * Load BPF files.
+ *
+ * @param em the structure with configuration
+ */
+static int ebpf_swap_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_SWAP_READPAGE_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 {
+        bpf_obj = swap_bpf__open();
+        if (!bpf_obj)
+            ret = -1;
+        else
+            ret = ebpf_swap_load_and_attach(bpf_obj, em);
+    }
+#endif
+
+    if (ret)
+        netdata_log_error("%s %s", EBPF_DEFAULT_ERROR_MSG, em->info.thread_name);
+
+    return ret;
+}
+
+/**
+ * SWAP thread
+ *
+ * Thread used to make swap thread
+ *
+ * @param ptr a pointer to `struct ebpf_module`
+ *
+ * @return It always return NULL
+ */
+void *ebpf_swap_thread(void *ptr)
+{
+    netdata_thread_cleanup_push(ebpf_swap_exit, ptr);
+
+    ebpf_module_t *em = (ebpf_module_t *)ptr;
+    em->maps = swap_maps;
+
+    ebpf_update_pid_table(&swap_maps[NETDATA_PID_SWAP_TABLE], em);
+
+#ifdef LIBBPF_MAJOR_VERSION
+    ebpf_adjust_thread_load(em, default_btf);
+#endif
+   if (ebpf_swap_load_bpf(em)) {
+        goto endswap;
+    }
+
+    ebpf_swap_allocate_global_vectors(em->apps_charts);
+
+    int algorithms[NETDATA_SWAP_END] = { NETDATA_EBPF_INCREMENTAL_IDX, NETDATA_EBPF_INCREMENTAL_IDX };
+    ebpf_global_labels(swap_aggregated_data, swap_publish_aggregated, swap_dimension_name, swap_dimension_name,
+                       algorithms, NETDATA_SWAP_END);
+
+    pthread_mutex_lock(&lock);
+    ebpf_create_swap_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);
+
+    swap_collector(em);
+
+endswap:
+    ebpf_update_disabled_plugin_stats(em);
+
+    netdata_thread_cleanup_pop(1);
+    return NULL;
+}