Adding upstream version 1.37.1.upstream/1.37.1upstream

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

4 files changed, 1811 insertions, 0 deletions

diff --git a/libnetdata/ebpf/Makefile.am b/libnetdata/ebpf/Makefile.am
new file mode 100644
index 0000000..161784b
--- /dev/null
+++ b/libnetdata/ebpf/Makefile.am
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+dist_noinst_DATA = \
+    README.md \
+    $(NULL)
diff --git a/libnetdata/ebpf/README.md b/libnetdata/ebpf/README.md
new file mode 100644
index 0000000..534867f
--- /dev/null
+++ b/libnetdata/ebpf/README.md
@@ -0,0 +1,5 @@
+<!--
+custom_edit_url: https://github.com/netdata/netdata/edit/master/libnetdata/ebpf/README.md
+-->
+
+
diff --git a/libnetdata/ebpf/ebpf.c b/libnetdata/ebpf/ebpf.c
new file mode 100644
index 0000000..382485e
--- /dev/null
+++ b/libnetdata/ebpf/ebpf.c
@@ -0,0 +1,1427 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <dlfcn.h>
+#include <sys/utsname.h>
+
+#include "../libnetdata.h"
+
+char *ebpf_user_config_dir = CONFIG_DIR;
+char *ebpf_stock_config_dir = LIBCONFIG_DIR;
+
+/*
+static int clean_kprobe_event(FILE *out, char *filename, char *father_pid, netdata_ebpf_events_t *ptr)
+{
+    int fd = open(filename, O_WRONLY | O_APPEND, 0);
+    if (fd < 0) {
+        if (out) {
+            fprintf(out, "Cannot open %s : %s\n", filename, strerror(errno));
+        }
+        return 1;
+    }
+
+    char cmd[1024];
+    int length = snprintf(cmd, 1023, "-:kprobes/%c_netdata_%s_%s", ptr->type, ptr->name, father_pid);
+    int ret = 0;
+    if (length > 0) {
+        ssize_t written = write(fd, cmd, strlen(cmd));
+        if (written < 0) {
+            if (out) {
+                fprintf(
+                    out, "Cannot remove the event (%d, %d) '%s' from %s : %s\n", getppid(), getpid(), cmd, filename,
+                    strerror((int)errno));
+            }
+            ret = 1;
+        }
+    }
+
+    close(fd);
+
+    return ret;
+}
+
+int clean_kprobe_events(FILE *out, int pid, netdata_ebpf_events_t *ptr)
+{
+    debug(D_EXIT, "Cleaning parent process events.");
+    char filename[FILENAME_MAX + 1];
+    snprintf(filename, FILENAME_MAX, "%s%s", NETDATA_DEBUGFS, "kprobe_events");
+
+    char removeme[16];
+    snprintf(removeme, 15, "%d", pid);
+
+    int i;
+    for (i = 0; ptr[i].name; i++) {
+        if (clean_kprobe_event(out, filename, removeme, &ptr[i])) {
+            break;
+        }
+    }
+
+    return 0;
+}
+*/
+
+//----------------------------------------------------------------------------------------------------------------------
+
+/**
+ * Get Kernel version
+ *
+ * Get the current kernel from /proc and returns an integer value representing it
+ *
+ * @return it returns a value representing the kernel version.
+ */
+int ebpf_get_kernel_version()
+{
+    char major[16], minor[16], patch[16];
+    char ver[VERSION_STRING_LEN];
+    char *version = ver;
+
+    int fd = open("/proc/sys/kernel/osrelease", O_RDONLY);
+    if (fd < 0)
+        return -1;
+
+    ssize_t len = read(fd, ver, sizeof(ver));
+    if (len < 0) {
+        close(fd);
+        return -1;
+    }
+
+    close(fd);
+
+    char *move = major;
+    while (*version && *version != '.')
+        *move++ = *version++;
+    *move = '\0';
+
+    version++;
+    move = minor;
+    while (*version && *version != '.')
+        *move++ = *version++;
+    *move = '\0';
+
+    if (*version)
+        version++;
+    else
+        return -1;
+
+    move = patch;
+    while (*version && *version != '\n' && *version != '-')
+        *move++ = *version++;
+    *move = '\0';
+
+    // This new rule is fixing kernel version according the formula:
+    //     KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + ((c) > 255 ? 255 : (c)))
+    // that was extracted from /usr/include/linux/version.h
+    int ipatch = (int)str2l(patch);
+    if (ipatch > 255)
+        ipatch = 255;
+
+    return ((int)(str2l(major) * 65536) + (int)(str2l(minor) * 256) + ipatch);
+}
+
+/**
+ * Get RH release
+ *
+ * Read Red Hat release from /etc/redhat-release
+ *
+ * @return It returns RH release on success and -1 otherwise
+ */
+int get_redhat_release()
+{
+    char buffer[VERSION_STRING_LEN + 1];
+    int major, minor;
+    FILE *fp = fopen("/etc/redhat-release", "r");
+
+    if (fp) {
+        major = 0;
+        minor = -1;
+        size_t length = fread(buffer, sizeof(char), VERSION_STRING_LEN, fp);
+        if (length > 4) {
+            buffer[length] = '\0';
+            char *end = strchr(buffer, '.');
+            char *start;
+            if (end) {
+                *end = 0x0;
+
+                if (end > buffer) {
+                    start = end - 1;
+
+                    major = strtol(start, NULL, 10);
+                    start = ++end;
+
+                    end++;
+                    if (end) {
+                        end = 0x00;
+                        minor = strtol(start, NULL, 10);
+                    } else {
+                        minor = -1;
+                    }
+                }
+            }
+        }
+
+        fclose(fp);
+        return ((major * 256) + minor);
+    } else {
+        return -1;
+    }
+}
+
+/**
+ * Check if the kernel is in a list of rejected ones
+ *
+ * @return Returns 1 if the kernel is rejected, 0 otherwise.
+ */
+static int kernel_is_rejected()
+{
+    // Get kernel version from system
+    char version_string[VERSION_STRING_LEN + 1];
+    int version_string_len = 0;
+
+    if (read_file("/proc/version_signature", version_string, VERSION_STRING_LEN)) {
+        if (read_file("/proc/version", version_string, VERSION_STRING_LEN)) {
+            struct utsname uname_buf;
+            if (!uname(&uname_buf)) {
+                info("Cannot check kernel version");
+                return 0;
+            }
+            version_string_len =
+                snprintfz(version_string, VERSION_STRING_LEN, "%s %s", uname_buf.release, uname_buf.version);
+        }
+    }
+
+    if (!version_string_len)
+        version_string_len = strlen(version_string);
+
+    // Open a file with a list of rejected kernels
+    char *config_dir = getenv("NETDATA_USER_CONFIG_DIR");
+    if (config_dir == NULL) {
+        config_dir = CONFIG_DIR;
+    }
+
+    char filename[FILENAME_MAX + 1];
+    snprintfz(filename, FILENAME_MAX, "%s/ebpf.d/%s", config_dir, EBPF_KERNEL_REJECT_LIST_FILE);
+    FILE *kernel_reject_list = fopen(filename, "r");
+
+    if (!kernel_reject_list) {
+        // Keep this to have compatibility with old versions
+        snprintfz(filename, FILENAME_MAX, "%s/%s", config_dir, EBPF_KERNEL_REJECT_LIST_FILE);
+        kernel_reject_list = fopen(filename, "r");
+
+        if (!kernel_reject_list) {
+            config_dir = getenv("NETDATA_STOCK_CONFIG_DIR");
+            if (config_dir == NULL) {
+                config_dir = LIBCONFIG_DIR;
+            }
+
+            snprintfz(filename, FILENAME_MAX, "%s/ebpf.d/%s", config_dir, EBPF_KERNEL_REJECT_LIST_FILE);
+            kernel_reject_list = fopen(filename, "r");
+
+            if (!kernel_reject_list)
+                return 0;
+        }
+    }
+
+    // Find if the kernel is in the reject list
+    char *reject_string = NULL;
+    size_t buf_len = 0;
+    ssize_t reject_string_len;
+    while ((reject_string_len = getline(&reject_string, &buf_len, kernel_reject_list) - 1) > 0) {
+        if (version_string_len >= reject_string_len) {
+            if (!strncmp(version_string, reject_string, reject_string_len)) {
+                info("A buggy kernel is detected");
+                fclose(kernel_reject_list);
+                freez(reject_string);
+                return 1;
+            }
+        }
+    }
+
+    fclose(kernel_reject_list);
+    free(reject_string);
+
+    return 0;
+}
+
+static int has_ebpf_kernel_version(int version)
+{
+    if (kernel_is_rejected())
+        return 0;
+
+    // Kernel 4.11.0 or RH > 7.5
+    return (version >= NETDATA_MINIMUM_EBPF_KERNEL || get_redhat_release() >= NETDATA_MINIMUM_RH_VERSION);
+}
+
+int has_condition_to_run(int version)
+{
+    if (!has_ebpf_kernel_version(version))
+        return 0;
+
+    return 1;
+}
+
+//----------------------------------------------------------------------------------------------------------------------
+
+/**
+ * Kernel Name
+ *
+ * Select kernel name used by eBPF programs
+ *
+ * Netdata delivers for users eBPF programs with specific suffixes that represent the kernels they were
+ * compiled, when we load the eBPF program, the suffix must be the nereast possible of the kernel running.
+ *
+ * @param selector select the kernel version.
+ *
+ * @return It returns the string to load kernel.
+ */
+static char *ebpf_select_kernel_name(uint32_t selector)
+{
+    static char *kernel_names[] = { NETDATA_IDX_STR_V3_10, NETDATA_IDX_STR_V4_14, NETDATA_IDX_STR_V4_16,
+                                    NETDATA_IDX_STR_V4_18, NETDATA_IDX_STR_V5_4,  NETDATA_IDX_STR_V5_10,
+                                    NETDATA_IDX_STR_V5_11, NETDATA_IDX_STR_V5_14, NETDATA_IDX_STR_V5_15,
+                                    NETDATA_IDX_STR_V5_16
+                                  };
+
+    return kernel_names[selector];
+}
+
+/**
+ * Select Max Index
+ *
+ * Select last index that will be tested on host.
+ *
+ * @param is_rhf is Red Hat fammily?
+ * @param kver   the kernel version
+ *
+ * @return it returns the index to access kernel string.
+ */
+static int ebpf_select_max_index(int is_rhf, uint32_t kver)
+{
+    if (is_rhf > 0) { // Is Red Hat family
+        if (kver >= NETDATA_EBPF_KERNEL_5_14)
+            return NETDATA_IDX_V5_14;
+        else if (kver >= NETDATA_EBPF_KERNEL_5_4 && kver < NETDATA_EBPF_KERNEL_5_5) // For Oracle Linux
+            return NETDATA_IDX_V5_4;
+        else if (kver >= NETDATA_EBPF_KERNEL_4_11)
+            return NETDATA_IDX_V4_18;
+    } else { // Kernels from kernel.org
+        if (kver >= NETDATA_EBPF_KERNEL_5_16)
+            return NETDATA_IDX_V5_16;
+        else if (kver >= NETDATA_EBPF_KERNEL_5_15)
+            return NETDATA_IDX_V5_15;
+        else if (kver >= NETDATA_EBPF_KERNEL_5_11)
+            return NETDATA_IDX_V5_11;
+        else if (kver >= NETDATA_EBPF_KERNEL_5_10)
+            return NETDATA_IDX_V5_10;
+        else if (kver >= NETDATA_EBPF_KERNEL_4_17)
+            return NETDATA_IDX_V5_4;
+        else if (kver >= NETDATA_EBPF_KERNEL_4_15)
+            return NETDATA_IDX_V4_16;
+        else if (kver >= NETDATA_EBPF_KERNEL_4_11)
+            return NETDATA_IDX_V4_14;
+    }
+
+    return NETDATA_IDX_V3_10;
+}
+
+/**
+ * Select Index
+ *
+ * Select index to load data.
+ *
+ * @param kernels is the variable with kernel versions.
+ * @param is_rhf  is Red Hat fammily?
+ * param  kver    the kernel version
+ */
+static uint32_t ebpf_select_index(uint32_t kernels, int is_rhf, uint32_t kver)
+{
+    uint32_t start = ebpf_select_max_index(is_rhf, kver);
+    uint32_t idx;
+
+    if (is_rhf == -1)
+        kernels &= ~NETDATA_V5_14;
+
+    for (idx = start; idx; idx--) {
+        if (kernels & 1 << idx)
+            break;
+    }
+
+    return idx;
+}
+
+/**
+ *  Mount Name
+ *
+ *  Mount name of eBPF program to be loaded.
+ *
+ *  Netdata eBPF programs has the following format:
+ *
+ *      Tnetdata_ebpf_N.V.o
+ *
+ *  where:
+ *     T - Is the eBPF type. When starts with 'p', this means we are only adding probes,
+ *         and when they start with 'r' we are using retprobes.
+ *     N - The eBPF program name.
+ *     V - The kernel version in string format.
+ *
+ *  @param out       the vector where the name will be stored
+ *  @param path
+ *  @param len       the size of the out vector.
+ *  @param kver      the kernel version
+ *  @param name      the eBPF program name.
+ *  @param is_return is return or entry ?
+ */
+static void ebpf_mount_name(char *out, size_t len, char *path, uint32_t kver, const char *name, int is_return)
+{
+    char *version = ebpf_select_kernel_name(kver);
+    snprintfz(out, len, "%s/ebpf.d/%cnetdata_ebpf_%s.%s.o",
+              path,
+              (is_return) ? 'r' : 'p',
+              name,
+              version);
+}
+
+//----------------------------------------------------------------------------------------------------------------------
+
+/**
+ * Statistics from targets
+ *
+ * Count the information from targets.
+ *
+ * @param report  the output structure
+ * @param targets  vector with information about the eBPF plugin.
+ */
+static void ebpf_stats_targets(ebpf_plugin_stats_t *report, netdata_ebpf_targets_t *targets)
+{
+    if (!targets) {
+        report->probes = report->tracepoints = report->trampolines = 0;
+        return;
+    }
+
+    int i = 0;
+    while (targets[i].name) {
+        switch (targets[i].mode) {
+            case EBPF_LOAD_PROBE: {
+                report->probes++;
+                break;
+            }
+            case EBPF_LOAD_RETPROBE: {
+                report->retprobes++;
+                break;
+            }
+            case EBPF_LOAD_TRACEPOINT: {
+                report->tracepoints++;
+                break;
+            }
+            case EBPF_LOAD_TRAMPOLINE: {
+                report->trampolines++;
+                break;
+            }
+        }
+
+        i++;
+    }
+}
+
+/**
+ * Update General stats
+ *
+ * Update eBPF plugin statistics that has relationship with the thread.
+ *
+ * This function must be called with mutex associated to charts is locked.
+ *
+ * @param report  the output structure
+ * @param em      the structure with information about how the module/thread is working.
+ */
+void ebpf_update_stats(ebpf_plugin_stats_t *report, ebpf_module_t *em)
+{
+    report->threads++;
+
+    // It is not necessary to report more information.
+    if (!em->enabled)
+        return;
+
+    report->running++;
+
+    // In theory the `else if` is useless, because when this function is called, the module should not stay in
+    // EBPF_LOAD_PLAY_DICE. We have this additional condition to detect errors from developers.
+    if (em->load & EBPF_LOAD_LEGACY)
+        report->legacy++;
+    else if (em->load & EBPF_LOAD_CORE)
+        report->core++;
+
+    ebpf_stats_targets(report, em->targets);
+}
+
+//----------------------------------------------------------------------------------------------------------------------
+
+void ebpf_update_pid_table(ebpf_local_maps_t *pid, ebpf_module_t *em)
+{
+    pid->user_input = em->pid_map_size;
+}
+
+/**
+ * Update map size
+ *
+ * Update map size with information read from configuration files.
+ *
+ * @param map       the structure with file descriptor to update.
+ * @param lmap      the structure with information from configuration files.
+ * @param em        the structure with information about how the module/thread is working.
+ * @param map_name  the name of the file used to log.
+ */
+void ebpf_update_map_size(struct bpf_map *map, ebpf_local_maps_t *lmap, ebpf_module_t *em, const char *map_name __maybe_unused)
+{
+    uint32_t define_size = 0;
+    uint32_t apps_type = NETDATA_EBPF_MAP_PID | NETDATA_EBPF_MAP_RESIZABLE;
+    if (lmap->user_input && lmap->user_input != lmap->internal_input) {
+        define_size = lmap->internal_input;
+#ifdef NETDATA_INTERNAL_CHECKS
+        info("Changing map %s from size %u to %u ", map_name, lmap->internal_input, lmap->user_input);
+#endif
+    } else if (((lmap->type & apps_type) == apps_type) && (!em->apps_charts) && (!em->cgroup_charts)) {
+        lmap->user_input = ND_EBPF_DEFAULT_MIN_PID;
+    } else if (((em->apps_charts) || (em->cgroup_charts)) && (em->apps_level != NETDATA_APPS_NOT_SET)) {
+        switch (em->apps_level) {
+            case NETDATA_APPS_LEVEL_ALL: {
+                define_size = lmap->user_input;
+                break;
+            }
+            case NETDATA_APPS_LEVEL_PARENT: {
+                define_size = ND_EBPF_DEFAULT_PID_SIZE / 2;
+                break;
+            }
+            case NETDATA_APPS_LEVEL_REAL_PARENT:
+            default: {
+                define_size = ND_EBPF_DEFAULT_PID_SIZE / 3;
+            }
+        }
+    }
+
+    if (!define_size)
+        return;
+
+#ifdef LIBBPF_MAJOR_VERSION
+    bpf_map__set_max_entries(map, define_size);
+#else
+    bpf_map__resize(map, define_size);
+#endif
+}
+
+/**
+ * Update Legacy map sizes
+ *
+ * Update map size for eBPF legacy code.
+ *
+ * @param program the structure with values read from binary.
+ * @param em      the structure with information about how the module/thread is working.
+ */
+static void ebpf_update_legacy_map_sizes(struct bpf_object *program, ebpf_module_t *em)
+{
+    struct bpf_map *map;
+    ebpf_local_maps_t *maps = em->maps;
+    if (!maps)
+        return;
+
+    bpf_map__for_each(map, program)
+    {
+        const char *map_name = bpf_map__name(map);
+        int i = 0; ;
+        while (maps[i].name) {
+            ebpf_local_maps_t *w = &maps[i];
+            if (w->type & NETDATA_EBPF_MAP_RESIZABLE) {
+                if (!strcmp(w->name, map_name)) {
+                    ebpf_update_map_size(map, w, em, map_name);
+                }
+            }
+
+            i++;
+        }
+    }
+}
+
+size_t ebpf_count_programs(struct bpf_object *obj)
+{
+    size_t tot = 0;
+    struct bpf_program *prog;
+    bpf_object__for_each_program(prog, obj)
+    {
+        tot++;
+    }
+
+    return tot;
+}
+
+static ebpf_specify_name_t *ebpf_find_names(ebpf_specify_name_t *names, const char *prog_name)
+{
+    size_t i = 0;
+    while (names[i].program_name) {
+        if (!strcmp(prog_name, names[i].program_name))
+            return &names[i];
+
+        i++;
+    }
+
+    return NULL;
+}
+
+static struct bpf_link **ebpf_attach_programs(struct bpf_object *obj, size_t length, ebpf_specify_name_t *names)
+{
+    struct bpf_link **links = callocz(length , sizeof(struct bpf_link *));
+    size_t i = 0;
+    struct bpf_program *prog;
+    ebpf_specify_name_t *w;
+    bpf_object__for_each_program(prog, obj)
+    {
+        if (names) {
+            const char *name = bpf_program__name(prog);
+            w = ebpf_find_names(names, name);
+        } else
+            w = NULL;
+
+        if (w) {
+            enum bpf_prog_type type = bpf_program__get_type(prog);
+            if (type == BPF_PROG_TYPE_KPROBE)
+                links[i] = bpf_program__attach_kprobe(prog, w->retprobe, w->optional);
+        } else
+            links[i] = bpf_program__attach(prog);
+
+        if (libbpf_get_error(links[i])) {
+            links[i] = NULL;
+        }
+
+        i++;
+    }
+
+    return links;
+}
+
+static void ebpf_update_maps(ebpf_module_t *em, struct bpf_object *obj)
+{
+    if (!em->maps)
+        return;
+
+    ebpf_local_maps_t *maps = em->maps;
+    struct bpf_map *map;
+    bpf_map__for_each(map, obj)
+    {
+        int fd = bpf_map__fd(map);
+        if (maps) {
+            const char *map_name = bpf_map__name(map);
+            int j = 0; ;
+            while (maps[j].name) {
+                ebpf_local_maps_t *w = &maps[j];
+                if (w->map_fd == ND_EBPF_MAP_FD_NOT_INITIALIZED && !strcmp(map_name, w->name))
+                    w->map_fd = fd;
+
+                j++;
+            }
+        }
+    }
+}
+
+/**
+ * Update Controller
+ *
+ * Update controller value with user input.
+ *
+ * @param fd   the table file descriptor
+ * @param em   structure with information about eBPF program we will load.
+ */
+void ebpf_update_controller(int fd, ebpf_module_t *em)
+{
+    uint32_t values[NETDATA_CONTROLLER_END] = {
+        (em->apps_charts & NETDATA_EBPF_APPS_FLAG_YES) | em->cgroup_charts,
+        em->apps_level
+    };
+    uint32_t key;
+    uint32_t end = (em->apps_level != NETDATA_APPS_NOT_SET) ? NETDATA_CONTROLLER_END : NETDATA_CONTROLLER_APPS_LEVEL;
+
+    for (key = NETDATA_CONTROLLER_APPS_ENABLED; key < end; key++) {
+        int ret = bpf_map_update_elem(fd, &key, &values[key], 0);
+        if (ret)
+            error("Add key(%u) for controller table failed.", key);
+    }
+}
+
+/**
+ * Update Legacy controller
+ *
+ * Update legacy controller table when eBPF program has it.
+ *
+ * @param em   structure with information about eBPF program we will load.
+ * @param obj  bpf object with tables.
+ */
+static void ebpf_update_legacy_controller(ebpf_module_t *em, struct bpf_object *obj)
+{
+    ebpf_local_maps_t *maps = em->maps;
+    if (!maps)
+        return;
+
+    struct bpf_map *map;
+    bpf_map__for_each(map, obj)
+    {
+        size_t i = 0;
+        while (maps[i].name) {
+            ebpf_local_maps_t *w = &maps[i];
+            if (w->map_fd != ND_EBPF_MAP_FD_NOT_INITIALIZED && (w->type & NETDATA_EBPF_MAP_CONTROLLER)) {
+                w->type &= ~NETDATA_EBPF_MAP_CONTROLLER;
+                w->type |= NETDATA_EBPF_MAP_CONTROLLER_UPDATED;
+
+                ebpf_update_controller(w->map_fd, em);
+            }
+            i++;
+        }
+    }
+}
+
+/**
+ * Load Program
+ *
+ * Load eBPF program into kernel
+ *
+ * @param plugins_dir    directory where binary are stored
+ * @param em             structure with information about eBPF program we will load.
+ * @param kver           the kernel version according /usr/include/linux/version.h
+ * @param is_rhf         is a kernel from Red Hat Family?
+ * @param obj            structure where we will store object loaded.
+ *
+ * @return it returns a link for each target we associated an eBPF program.
+ */
+struct bpf_link **ebpf_load_program(char *plugins_dir, ebpf_module_t *em, int kver, int is_rhf,
+                                    struct bpf_object **obj)
+{
+    char lpath[4096];
+
+    uint32_t idx = ebpf_select_index(em->kernels, is_rhf, kver);
+
+    ebpf_mount_name(lpath, 4095, plugins_dir, idx, em->thread_name, em->mode);
+
+    // When this function is called ebpf.plugin is using legacy code, so we should reset the variable
+    em->load &= ~ NETDATA_EBPF_LOAD_METHODS;
+    em->load |= EBPF_LOAD_LEGACY;
+
+    *obj = bpf_object__open_file(lpath, NULL);
+    if (libbpf_get_error(obj)) {
+        error("Cannot open BPF object %s", lpath);
+        bpf_object__close(*obj);
+        return NULL;
+    }
+
+    ebpf_update_legacy_map_sizes(*obj, em);
+
+    if (bpf_object__load(*obj)) {
+        error("ERROR: loading BPF object file failed %s\n", lpath);
+        bpf_object__close(*obj);
+        return NULL;
+    }
+
+    ebpf_update_maps(em, *obj);
+    ebpf_update_legacy_controller(em, *obj);
+
+    size_t count_programs =  ebpf_count_programs(*obj);
+
+#ifdef NETDATA_INTERNAL_CHECKS
+    info("eBPF program %s loaded with success!", lpath);
+#endif
+
+    return ebpf_attach_programs(*obj, count_programs, em->names);
+}
+
+char *ebpf_find_symbol(char *search)
+{
+    char filename[FILENAME_MAX + 1];
+    char *ret = NULL;
+    snprintfz(filename, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, NETDATA_KALLSYMS);
+    procfile *ff = procfile_open(filename, " \t", PROCFILE_FLAG_DEFAULT);
+    if(unlikely(!ff)) {
+        error("Cannot open %s%s", netdata_configured_host_prefix, NETDATA_KALLSYMS);
+        return ret;
+    }
+
+    ff = procfile_readall(ff);
+    if(unlikely(!ff))
+        return ret;
+
+    unsigned long i, lines = procfile_lines(ff);
+    size_t length = strlen(search);
+    for(i = 0; i < lines ; i++) {
+        char *cmp = procfile_lineword(ff, i,2);;
+        if (!strncmp(search, cmp, length)) {
+            ret = strdupz(cmp);
+            break;
+        }
+    }
+
+    procfile_close(ff);
+
+    return ret;
+}
+
+void ebpf_update_names(ebpf_specify_name_t *opt, ebpf_module_t *em)
+{
+    int mode = em->mode;
+    em->names = opt;
+
+    size_t i = 0;
+    while (opt[i].program_name) {
+        opt[i].retprobe = (mode == MODE_RETURN);
+        opt[i].optional = ebpf_find_symbol(opt[i].function_to_attach);
+
+        i++;
+    }
+}
+
+//----------------------------------------------------------------------------------------------------------------------
+
+void ebpf_mount_config_name(char *filename, size_t length, char *path, const char *config)
+{
+    snprintf(filename, length, "%s/ebpf.d/%s", path, config);
+}
+
+int ebpf_load_config(struct config *config, char *filename)
+{
+    return appconfig_load(config, filename, 0, NULL);
+}
+
+
+static netdata_run_mode_t ebpf_select_mode(char *mode)
+{
+    if (!strcasecmp(mode,EBPF_CFG_LOAD_MODE_RETURN ))
+        return MODE_RETURN;
+    else if  (!strcasecmp(mode, "dev"))
+        return MODE_DEVMODE;
+
+    return MODE_ENTRY;
+}
+
+static void ebpf_select_mode_string(char *output, size_t len, netdata_run_mode_t  sel)
+{
+    if (sel == MODE_RETURN)
+        strncpyz(output, EBPF_CFG_LOAD_MODE_RETURN, len);
+    else
+        strncpyz(output, EBPF_CFG_LOAD_MODE_DEFAULT, len);
+}
+
+/**
+ * Convert string to load mode
+ *
+ * Convert the string given as argument to value present in enum.
+ *
+ * @param str  value read from configuraion file.
+ *
+ * @return It returns the value to be used.
+ */
+netdata_ebpf_load_mode_t epbf_convert_string_to_load_mode(char *str)
+{
+    if (!strcasecmp(str, EBPF_CFG_CORE_PROGRAM))
+        return EBPF_LOAD_CORE;
+    else if (!strcasecmp(str, EBPF_CFG_LEGACY_PROGRAM))
+        return EBPF_LOAD_LEGACY;
+
+    return EBPF_LOAD_PLAY_DICE;
+}
+
+/**
+ * Convert load mode to string
+ *
+ * @param mode value that will select the string
+ *
+ * @return It returns the string associated to mode.
+ */
+static char *ebpf_convert_load_mode_to_string(netdata_ebpf_load_mode_t mode)
+{
+    if (mode & EBPF_LOAD_CORE)
+        return EBPF_CFG_CORE_PROGRAM;
+    else if (mode & EBPF_LOAD_LEGACY)
+        return EBPF_CFG_LEGACY_PROGRAM;
+
+    return EBPF_CFG_DEFAULT_PROGRAM;
+}
+
+/**
+ * Convert collect pid to string
+ *
+ * @param level value that will select the string
+ *
+ * @return It returns the string associated to level.
+ */
+static char *ebpf_convert_collect_pid_to_string(netdata_apps_level_t level)
+{
+    if (level == NETDATA_APPS_LEVEL_REAL_PARENT)
+        return EBPF_CFG_PID_REAL_PARENT;
+    else if (level == NETDATA_APPS_LEVEL_PARENT)
+        return EBPF_CFG_PID_PARENT;
+    else if (level == NETDATA_APPS_LEVEL_ALL)
+        return EBPF_CFG_PID_ALL;
+
+    return EBPF_CFG_PID_INTERNAL_USAGE;
+}
+
+/**
+ * Convert string to apps level
+ *
+ * @param str the argument read from config files
+ *
+ * @return it returns the level associated to the string or default when it is a wrong value
+ */
+netdata_apps_level_t ebpf_convert_string_to_apps_level(char *str)
+{
+    if (!strcasecmp(str, EBPF_CFG_PID_REAL_PARENT))
+        return NETDATA_APPS_LEVEL_REAL_PARENT;
+    else if (!strcasecmp(str, EBPF_CFG_PID_PARENT))
+        return NETDATA_APPS_LEVEL_PARENT;
+    else if (!strcasecmp(str, EBPF_CFG_PID_ALL))
+        return NETDATA_APPS_LEVEL_ALL;
+
+    return NETDATA_APPS_NOT_SET;
+}
+
+/**
+ *  CO-RE type
+ *
+ *  Select the preferential type of CO-RE
+ *
+ *  @param str    value read from configuration file.
+ *  @param lmode  load mode used by collector.
+ */
+netdata_ebpf_program_loaded_t ebpf_convert_core_type(char *str, netdata_run_mode_t lmode)
+{
+    if (!strcasecmp(str, EBPF_CFG_ATTACH_TRACEPOINT))
+        return EBPF_LOAD_TRACEPOINT;
+    else if (!strcasecmp(str, EBPF_CFG_ATTACH_PROBE)) {
+        return (lmode == MODE_ENTRY) ? EBPF_LOAD_PROBE : EBPF_LOAD_RETPROBE;
+    }
+
+    return EBPF_LOAD_TRAMPOLINE;
+}
+
+#ifdef LIBBPF_MAJOR_VERSION
+/**
+ * Adjust Thread Load
+ *
+ * Adjust thread configuraton according specified load.
+ *
+ * @param mod   the main structure that will be adjusted.
+ * @param file  the btf file used with thread.
+ */
+void ebpf_adjust_thread_load(ebpf_module_t *mod, struct btf *file)
+{
+    if (!file) {
+        mod->load &= ~EBPF_LOAD_CORE;
+        mod->load |= EBPF_LOAD_LEGACY;
+    } else if (mod->load == EBPF_LOAD_PLAY_DICE && file) {
+        mod->load &= ~EBPF_LOAD_LEGACY;
+        mod->load |= EBPF_LOAD_CORE;
+    }
+}
+
+/**
+ * Parse BTF file
+ *
+ * Parse a specific BTF file present on filesystem
+ *
+ * @param filename  the file that will be parsed.
+ *
+ * @return It returns a pointer for the file on success and NULL otherwise.
+ */
+struct btf *ebpf_parse_btf_file(const char *filename)
+{
+    struct btf *bf = btf__parse(filename, NULL);
+    if (libbpf_get_error(bf)) {
+        fprintf(stderr, "Cannot parse btf file");
+        btf__free(bf);
+        return NULL;
+    }
+
+    return bf;
+}
+
+/**
+ * Load default btf file
+ *
+ * Load the default BTF file on environment.
+ *
+ * @param path     is the fullpath
+ * @param filename is the file inside BTF path.
+ */
+struct btf *ebpf_load_btf_file(char *path, char *filename)
+{
+    char fullpath[PATH_MAX + 1];
+    snprintfz(fullpath, PATH_MAX, "%s/%s", path, filename);
+    struct btf *ret = ebpf_parse_btf_file(fullpath);
+    if (!ret)
+        info("Your environment does not have BTF file %s/%s. The plugin will work with 'legacy' code.",
+             path, filename);
+
+    return ret;
+}
+
+/**
+ * Find BTF attach type
+ *
+ * Search type fr current btf file.
+ *
+ * @param file     is the structure for the btf file already parsed.
+ */
+static inline const struct btf_type *ebpf_find_btf_attach_type(struct btf *file)
+{
+    int id = btf__find_by_name_kind(file, "bpf_attach_type", BTF_KIND_ENUM);
+    if (id < 0) {
+        fprintf(stderr, "Cannot find 'bpf_attach_type'");
+
+        return NULL;
+    }
+
+    return btf__type_by_id(file, id);
+}
+
+/**
+ * Is function inside BTF
+ *
+ * Look for a specific function inside the given BTF file.
+ *
+ * @param file     is the structure for the btf file already parsed.
+ * @param function is the function that we want to find.
+ */
+int ebpf_is_function_inside_btf(struct btf *file, char *function)
+{
+    const struct btf_type *type = ebpf_find_btf_attach_type(file);
+    if (!type)
+        return -1;
+
+    const struct btf_enum *e = btf_enum(type);
+    int i, id;
+    for (id = -1, i = 0; i < btf_vlen(type); i++, e++) {
+        if (!strcmp(btf__name_by_offset(file, e->name_off), "BPF_TRACE_FENTRY")) {
+            id = btf__find_by_name_kind(file, function, BTF_KIND_FUNC);
+            break;
+        }
+    }
+
+    return (id > 0) ? 1 : 0;
+}
+#endif
+
+/**
+ * Update target with configuration
+ *
+ * Update target load mode with value.
+ *
+ * @param em       the module structure
+ * @param value    value used to update.
+ */
+static void ebpf_update_target_with_conf(ebpf_module_t *em, netdata_ebpf_program_loaded_t value)
+{
+    netdata_ebpf_targets_t *targets = em->targets;
+    if (!targets) {
+        return;
+    }
+
+    int i = 0;
+    while (targets[i].name) {
+        targets[i].mode = value;
+        i++;
+    }
+}
+
+/**
+ * Select Load Mode
+ *
+ * Select the load mode according the given inputs.
+ *
+ * @param btf_file a pointer to the loaded btf file.
+ * @parma load     current value.
+ * @param btf_file a pointer to the loaded btf file.
+ * @param is_rhf is Red Hat family?
+ *
+ * @return it returns the new load mode.
+ */
+static netdata_ebpf_load_mode_t ebpf_select_load_mode(struct btf *btf_file, netdata_ebpf_load_mode_t load,
+                                                      int kver, int is_rh)
+{
+#ifdef LIBBPF_MAJOR_VERSION
+    if ((load & EBPF_LOAD_CORE) || (load & EBPF_LOAD_PLAY_DICE)) {
+        // Quick fix for Oracle linux 8.x
+        load = (!btf_file || (is_rh && (kver >= NETDATA_EBPF_KERNEL_5_4 && kver < NETDATA_EBPF_KERNEL_5_5))) ?
+               EBPF_LOAD_LEGACY : EBPF_LOAD_CORE;
+    }
+#else
+    load = EBPF_LOAD_LEGACY;
+#endif
+
+    return load;
+}
+
+/**
+ * Update Module using config
+ *
+ * Update configuration for a specific thread.
+ *
+ * @param modules   structure that will be updated
+ * @oaram origin    specify the configuration file loaded
+ * @param btf_file a pointer to the loaded btf file.
+ * @param is_rhf is Red Hat family?
+ */
+void ebpf_update_module_using_config(ebpf_module_t *modules, netdata_ebpf_load_mode_t origin, struct btf *btf_file,
+                                     int kver, int is_rh)
+{
+    char default_value[EBPF_MAX_MODE_LENGTH + 1];
+    ebpf_select_mode_string(default_value, EBPF_MAX_MODE_LENGTH, modules->mode);
+    char *value = appconfig_get(modules->cfg, EBPF_GLOBAL_SECTION, EBPF_CFG_LOAD_MODE, default_value);
+    modules->mode = ebpf_select_mode(value);
+
+    modules->update_every = (int)appconfig_get_number(modules->cfg, EBPF_GLOBAL_SECTION,
+                                                     EBPF_CFG_UPDATE_EVERY, modules->update_every);
+
+    modules->apps_charts = appconfig_get_boolean(modules->cfg, EBPF_GLOBAL_SECTION, EBPF_CFG_APPLICATION,
+                                                 (int) (modules->apps_charts & NETDATA_EBPF_APPS_FLAG_YES));
+
+    modules->cgroup_charts = appconfig_get_boolean(modules->cfg, EBPF_GLOBAL_SECTION, EBPF_CFG_CGROUP,
+                                                   modules->cgroup_charts);
+
+    modules->pid_map_size = (uint32_t)appconfig_get_number(modules->cfg, EBPF_GLOBAL_SECTION, EBPF_CFG_PID_SIZE,
+                                                           modules->pid_map_size);
+
+    value = ebpf_convert_load_mode_to_string(modules->load & NETDATA_EBPF_LOAD_METHODS);
+    value = appconfig_get(modules->cfg, EBPF_GLOBAL_SECTION, EBPF_CFG_TYPE_FORMAT, value);
+    netdata_ebpf_load_mode_t load = epbf_convert_string_to_load_mode(value);
+    load = ebpf_select_load_mode(btf_file, load, kver, is_rh);
+    modules->load = origin | load;
+
+    value = appconfig_get(modules->cfg, EBPF_GLOBAL_SECTION, EBPF_CFG_CORE_ATTACH, EBPF_CFG_ATTACH_TRAMPOLINE);
+    netdata_ebpf_program_loaded_t fill_lm = ebpf_convert_core_type(value, modules->mode);
+    ebpf_update_target_with_conf(modules, fill_lm);
+
+    value = ebpf_convert_collect_pid_to_string(modules->apps_level);
+    value = appconfig_get(modules->cfg, EBPF_GLOBAL_SECTION, EBPF_CFG_COLLECT_PID, value);
+    modules->apps_level =  ebpf_convert_string_to_apps_level(value);
+}
+
+/**
+ * Update module
+ *
+ * When this function is called, it will load the configuration file and after this
+ * it updates the global information of ebpf_module.
+ * If the module has specific configuration, this function will load it, but it will not
+ * update the variables.
+ *
+ * @param em       the module structure
+ * @param btf_file a pointer to the loaded btf file.
+ * @param is_rhf is Red Hat family?
+ * @param kver   the kernel version
+ */
+void ebpf_update_module(ebpf_module_t *em, struct btf *btf_file, int kver, int is_rh)
+{
+    char filename[FILENAME_MAX+1];
+    netdata_ebpf_load_mode_t origin;
+
+    ebpf_mount_config_name(filename, FILENAME_MAX, ebpf_user_config_dir, em->config_file);
+    if (!ebpf_load_config(em->cfg, filename)) {
+        ebpf_mount_config_name(filename, FILENAME_MAX, ebpf_stock_config_dir, em->config_file);
+        if (!ebpf_load_config(em->cfg, filename)) {
+            error("Cannot load the ebpf configuration file %s", em->config_file);
+            return;
+        }
+        // If user defined data globaly, we will have here EBPF_LOADED_FROM_USER, we need to consider this, to avoid
+        // forcing users to configure thread by thread.
+        origin = (!(em->load & NETDATA_EBPF_LOAD_SOURCE)) ? EBPF_LOADED_FROM_STOCK : em->load & NETDATA_EBPF_LOAD_SOURCE;
+    } else
+        origin = EBPF_LOADED_FROM_USER;
+
+    ebpf_update_module_using_config(em, origin, btf_file, kver, is_rh);
+}
+
+/**
+ * Adjust Apps Cgroup
+ *
+ * Apps and cgroup has internal cleanup that needs attaching tracers to release_task, to avoid overload the function
+ * we will enable this integration by default, if and only if, we are running with trampolines.
+ *
+ * @param em   a poiter to the main thread structure.
+ * @param mode is the mode used with different
+ */
+void ebpf_adjust_apps_cgroup(ebpf_module_t *em, netdata_ebpf_program_loaded_t mode)
+{
+    if ((em->load & EBPF_LOADED_FROM_STOCK) &&
+    (em->apps_charts || em->cgroup_charts) &&
+    mode != EBPF_LOAD_TRAMPOLINE) {
+        em->apps_charts = NETDATA_EBPF_APPS_FLAG_NO;
+        em->cgroup_charts = 0;
+    }
+}
+
+//----------------------------------------------------------------------------------------------------------------------
+
+/**
+ * Load Address
+ *
+ * Helper used to get address from /proc/kallsym
+ *
+ * @param fa address structure
+ * @param fd file descriptor loaded inside kernel.
+ */
+void ebpf_load_addresses(ebpf_addresses_t *fa, int fd)
+{
+    if (fa->addr)
+        return ;
+
+    procfile *ff = procfile_open("/proc/kallsyms", " \t:", PROCFILE_FLAG_DEFAULT);
+    if (!ff)
+        return;
+
+    ff = procfile_readall(ff);
+    if (!ff)
+        return;
+
+    fa->hash = simple_hash(fa->function);
+
+    size_t lines = procfile_lines(ff), l;
+    for(l = 0; l < lines ;l++) {
+        char *fcnt = procfile_lineword(ff, l, 2);
+        uint32_t hash = simple_hash(fcnt);
+        if (fa->hash == hash && !strcmp(fcnt, fa->function)) {
+            char addr[128];
+            snprintf(addr, 127, "0x%s", procfile_lineword(ff, l, 0));
+            fa->addr = (unsigned long) strtoul(addr, NULL, 16);
+            uint32_t key = 0;
+            bpf_map_update_elem(fd, &key, &fa->addr, BPF_ANY);
+        }
+    }
+
+    procfile_close(ff);
+}
+
+//----------------------------------------------------------------------------------------------------------------------
+
+/**
+ * Fill Algorithms
+ *
+ * Set one unique dimension for all vector position.
+ *
+ * @param algorithms the output vector
+ * @param length     number of elements of algorithms vector
+ * @param algorithm  algorithm used on charts.
+*/
+void ebpf_fill_algorithms(int *algorithms, size_t length, int algorithm)
+{
+    size_t i;
+    for (i = 0; i < length; i++) {
+        algorithms[i] = algorithm;
+    }
+}
+
+/**
+ * Fill Histogram dimension
+ *
+ * Fill the histogram dimension with the specified ranges
+ */
+char **ebpf_fill_histogram_dimension(size_t maximum)
+{
+    char *dimensions[] = { "us", "ms", "s"};
+    int previous_dim = 0, current_dim = 0;
+    uint32_t previous_level = 1000, current_level = 1000;
+    uint32_t previous_divisor = 1, current_divisor = 1;
+    uint32_t current = 1, previous = 0;
+    uint32_t selector;
+    char **out = callocz(maximum, sizeof(char *));
+    char range[128];
+    size_t end = maximum - 1;
+    for (selector = 0; selector < end; selector++) {
+        snprintf(range, 127, "%u%s->%u%s", previous/previous_divisor, dimensions[previous_dim],
+                 current/current_divisor, dimensions[current_dim]);
+        out[selector] = strdupz(range);
+        previous = current;
+        current <<= 1;
+
+        if (previous_dim != 2 && previous > previous_level) {
+            previous_dim++;
+
+            previous_divisor *= 1000;
+            previous_level *= 1000;
+        }
+
+        if (current_dim != 2 && current > current_level) {
+            current_dim++;
+
+            current_divisor *= 1000;
+            current_level *= 1000;
+        }
+    }
+    snprintf(range, 127, "%u%s->+Inf", previous/previous_divisor, dimensions[previous_dim]);
+    out[selector] = strdupz(range);
+
+    return out;
+}
+
+/**
+ * Histogram dimension cleanup
+ *
+ * Cleanup dimensions allocated with function ebpf_fill_histogram_dimension
+ *
+ * @param ptr
+ * @param length
+ */
+void ebpf_histogram_dimension_cleanup(char **ptr, size_t length)
+{
+    size_t i;
+    for (i = 0; i < length; i++) {
+        freez(ptr[i]);
+    }
+    freez(ptr);
+}
+
+//----------------------------------------------------------------------------------------------------------------------
+
+/**
+ * Open tracepoint path
+ *
+ * @param filename   pointer to store the path
+ * @param length     file length
+ * @param subsys     is the name of your subsystem.
+ * @param eventname  is the name of the event to trace.
+ * @param flags      flags used with syscall open
+ *
+ * @return it returns a positive value on success and a negative otherwise.
+ */
+static inline int ebpf_open_tracepoint_path(char *filename, size_t length, char *subsys, char *eventname, int flags)
+{
+    snprintfz(filename, length, "%s/events/%s/%s/enable", NETDATA_DEBUGFS, subsys, eventname);
+    return open(filename, flags, 0);
+}
+
+/**
+ * Is tracepoint enabled
+ *
+ * Check whether the tracepoint is enabled.
+ *
+ * @param subsys     is the name of your subsystem.
+ * @param eventname  is the name of the event to trace.
+ *
+ * @return  it returns 1 when it is enabled, 0 when it is disabled and -1 on error.
+ */
+int ebpf_is_tracepoint_enabled(char *subsys, char *eventname)
+{
+    char text[FILENAME_MAX + 1];
+    int fd = ebpf_open_tracepoint_path(text, FILENAME_MAX, subsys, eventname, O_RDONLY);
+    if (fd < 0) {
+        return -1;
+    }
+
+    ssize_t length = read(fd, text, 1);
+    if (length != 1) {
+        close(fd);
+        return -1;
+    }
+    close(fd);
+
+    return (text[0] == '1') ? CONFIG_BOOLEAN_YES : CONFIG_BOOLEAN_NO;
+}
+
+/**
+ *  Change Tracing values
+ *
+ * Change value for specific tracepoint enabling or disabling it according value given.
+ *
+ * @param subsys     is the name of your subsystem.
+ * @param eventname  is the name of the event to trace.
+ * @param value      a value to enable (1) or disable (0) a tracepoint.
+ *
+ * @return It returns 0 on success and -1 otherwise
+ */
+static int ebpf_change_tracing_values(char *subsys, char *eventname, char *value)
+{
+    if (strcmp("0", value) && strcmp("1", value)) {
+        error("Invalid value given to either enable or disable a tracepoint.");
+        return -1;
+    }
+
+    char filename[1024];
+    int fd = ebpf_open_tracepoint_path(filename, 1023, subsys, eventname, O_WRONLY);
+    if (fd < 0) {
+        return -1;
+    }
+
+    ssize_t written = write(fd, value, strlen(value));
+    if (written < 0) {
+        close(fd);
+        return -1;
+    }
+
+    close(fd);
+    return 0;
+}
+
+/**
+ * Enable tracing values
+ *
+ * Enable a tracepoint on a system
+ *
+ * @param subsys     is the name of your subsystem.
+ * @param eventname  is the name of the event to trace.
+ *
+ * @return It returns 0 on success and -1 otherwise
+ */
+int ebpf_enable_tracing_values(char *subsys, char *eventname)
+{
+    return ebpf_change_tracing_values(subsys, eventname, "1");
+}
+
+/**
+ * Disable tracing values
+ *
+ * Disable tracing points enabled by collector
+ *
+ * @param subsys     is the name of your subsystem.
+ * @param eventname  is the name of the event to trace.
+ *
+ * @return It returns 0 on success and -1 otherwise
+ */
+int ebpf_disable_tracing_values(char *subsys, char *eventname)
+{
+    return ebpf_change_tracing_values(subsys, eventname, "0");
+}
+
+/**
+ * Select PC prefix
+ *
+ * Identify the prefix to run on PC architecture.
+ *
+ * @return It returns 32 or 64 according to host arch.
+ */
+static uint32_t ebpf_select_pc_prefix()
+{
+    long counter = 1;
+    uint32_t i;
+    for (i = 0; i < 128; i++) {
+        counter <<= 1;
+        if (counter < 0)
+            break;
+    }
+
+    return counter;
+}
+
+/**
+ * Select Host Prefix
+ *
+ * Select prefix to syscall when host is running a kernel newer than 4.17.0
+ *
+ * @param output the vector to store data.
+ * @param length length of output vector.
+ * @param syscall the syscall that prefix will be attached;
+ * @param kver    the current kernel version in format MAJOR*65536 + MINOR*256 + PATCH
+ */
+void ebpf_select_host_prefix(char *output, size_t length, char *syscall, int kver)
+{
+    if (kver < NETDATA_EBPF_KERNEL_4_17)
+        snprintfz(output, length, "sys_%s", syscall);
+    else {
+        uint32_t arch = ebpf_select_pc_prefix();
+        // Prefix selected according https://www.kernel.org/doc/html/latest/process/adding-syscalls.html
+        char *prefix = (arch == 32) ? "__ia32" : "__x64";
+        snprintfz(output, length, "%s_sys_%s", prefix, syscall);
+    }
+}
+
diff --git a/libnetdata/ebpf/ebpf.h b/libnetdata/ebpf/ebpf.h
new file mode 100644
index 0000000..5cff513
--- /dev/null
+++ b/libnetdata/ebpf/ebpf.h
@@ -0,0 +1,371 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_EBPF_H
+#define NETDATA_EBPF_H 1
+
+#include <bpf/bpf.h>
+#include <bpf/libbpf.h>
+#ifdef LIBBPF_DEPRECATED
+#include <bpf/btf.h>
+#include <linux/btf.h>
+#endif
+#include <stdlib.h> // Necessary for stdtoul
+
+#define NETDATA_DEBUGFS "/sys/kernel/debug/tracing/"
+#define NETDATA_KALLSYMS "/proc/kallsyms"
+
+// Config files
+#define EBPF_GLOBAL_SECTION "global"
+#define EBPF_CFG_LOAD_MODE "ebpf load mode"
+#define EBPF_CFG_LOAD_MODE_DEFAULT "entry"
+#define EBPF_CFG_LOAD_MODE_RETURN "return"
+#define EBPF_MAX_MODE_LENGTH 6
+
+#define EBPF_CFG_TYPE_FORMAT "ebpf type format"
+#define EBPF_CFG_DEFAULT_PROGRAM "auto"
+#define EBPF_CFG_CORE_PROGRAM "CO-RE"
+#define EBPF_CFG_LEGACY_PROGRAM "legacy"
+
+#define EBPF_CFG_COLLECT_PID "collect pid"
+#define EBPF_CFG_PID_REAL_PARENT "real parent"
+#define EBPF_CFG_PID_PARENT "parent"
+#define EBPF_CFG_PID_ALL "all"
+#define EBPF_CFG_PID_INTERNAL_USAGE "not used"
+
+#define EBPF_CFG_CORE_ATTACH "ebpf co-re tracing"
+#define EBPF_CFG_ATTACH_TRAMPOLINE "trampoline"
+#define EBPF_CFG_ATTACH_TRACEPOINT "tracepoint"
+#define EBPF_CFG_ATTACH_PROBE "probe"
+
+#define EBPF_CFG_PROGRAM_PATH "btf path"
+
+#define EBPF_CFG_UPDATE_EVERY "update every"
+#define EBPF_CFG_UPDATE_APPS_EVERY_DEFAULT 10
+#define EBPF_CFG_PID_SIZE "pid table size"
+#define EBPF_CFG_APPLICATION "apps"
+#define EBPF_CFG_CGROUP "cgroups"
+
+#define EBPF_COMMON_FNCT_CLEAN_UP "release_task"
+
+/**
+ * The RedHat magic number was got doing:
+ *
+ * 1797 = 7*256 + 5
+ *
+ *  For more details, please, read /usr/include/linux/version.h
+ *  in any Red Hat installation.
+ */
+#define NETDATA_MINIMUM_RH_VERSION 1797
+
+/**
+ * 2048 = 8*256 + 0
+ */
+#define NETDATA_RH_8 2048
+
+/**
+ *  Kernel Version
+ *
+ *  Kernel versions are calculated using the following formula:
+ *
+ *  VERSION = LINUX_VERSION_MAJOR*65536 + LINUX_VERSION_PATCHLEVEL*256 + LINUX_VERSION_SUBLEVEL
+ *
+ *  Where LINUX_VERSION_MAJOR, LINUX_VERSION_PATCHLEVEL, and LINUX_VERSION_SUBLEVEL are extracted
+ *  from /usr/include/linux/version.h.
+ *
+ *  LINUX_VERSION_SUBLEVEL has the maximum value 255, but linux can have more SUBLEVELS.
+ *
+ */
+enum netdata_ebpf_kernel_versions {
+    NETDATA_EBPF_KERNEL_4_11 = 264960,  //  264960 = 4 * 65536 + 15 * 256
+    NETDATA_EBPF_KERNEL_4_14 = 265728,  //  264960 = 4 * 65536 + 14 * 256
+    NETDATA_EBPF_KERNEL_4_15 = 265984,  //  265984 = 4 * 65536 + 15 * 256
+    NETDATA_EBPF_KERNEL_4_17 = 266496,  //  266496 = 4 * 65536 + 17 * 256
+    NETDATA_EBPF_KERNEL_5_0  = 327680,  //  327680 = 5 * 65536 +  0 * 256
+    NETDATA_EBPF_KERNEL_5_4  = 328704,  //  327680 = 5 * 65536 +  4 * 256
+    NETDATA_EBPF_KERNEL_5_5  = 328960,  //  327680 = 5 * 65536 +  5 * 256
+    NETDATA_EBPF_KERNEL_5_10 = 330240,  //  330240 = 5 * 65536 + 10 * 256
+    NETDATA_EBPF_KERNEL_5_11 = 330496,  //  330240 = 5 * 65536 + 11 * 256
+    NETDATA_EBPF_KERNEL_5_14 = 331264,  //  331264 = 5 * 65536 + 14 * 256
+    NETDATA_EBPF_KERNEL_5_15 = 331520,  //  331520 = 5 * 65536 + 15 * 256
+    NETDATA_EBPF_KERNEL_5_16 = 331776   //  331776 = 5 * 65536 + 16 * 256
+};
+
+enum netdata_kernel_flag {
+    NETDATA_V3_10 = 1 << 0,
+    NETDATA_V4_14 = 1 << 1,
+    NETDATA_V4_16 = 1 << 2,
+    NETDATA_V4_18 = 1 << 3,
+    NETDATA_V5_4  = 1 << 4,
+    NETDATA_V5_10 = 1 << 5,
+    NETDATA_V5_11 = 1 << 6,
+    NETDATA_V5_14 = 1 << 7,
+    NETDATA_V5_15 = 1 << 8,
+    NETDATA_V5_16 = 1 << 9
+};
+
+enum netdata_kernel_idx {
+    NETDATA_IDX_V3_10,
+    NETDATA_IDX_V4_14,
+    NETDATA_IDX_V4_16,
+    NETDATA_IDX_V4_18,
+    NETDATA_IDX_V5_4 ,
+    NETDATA_IDX_V5_10,
+    NETDATA_IDX_V5_11,
+    NETDATA_IDX_V5_14,
+    NETDATA_IDX_V5_15,
+    NETDATA_IDX_V5_16
+};
+
+#define NETDATA_IDX_STR_V3_10 "3.10"
+#define NETDATA_IDX_STR_V4_14 "4.14"
+#define NETDATA_IDX_STR_V4_16 "4.16"
+#define NETDATA_IDX_STR_V4_18 "4.18"
+#define NETDATA_IDX_STR_V5_4  "5.4"
+#define NETDATA_IDX_STR_V5_10 "5.10"
+#define NETDATA_IDX_STR_V5_11 "5.11"
+#define NETDATA_IDX_STR_V5_14 "5.14"
+#define NETDATA_IDX_STR_V5_15 "5.15"
+#define NETDATA_IDX_STR_V5_16 "5.16"
+
+/**
+ * Minimum value has relationship with libbpf support.
+ */
+#define NETDATA_MINIMUM_EBPF_KERNEL NETDATA_EBPF_KERNEL_4_11
+
+#define VERSION_STRING_LEN 256
+#define EBPF_KERNEL_REJECT_LIST_FILE "ebpf_kernel_reject_list.txt"
+
+#define ND_EBPF_DEFAULT_MIN_PID 1U
+#define ND_EBPF_MAP_FD_NOT_INITIALIZED (int)-1
+
+typedef struct ebpf_addresses {
+    char *function;
+    uint32_t hash;
+    // We use long as address, because it matches system length
+    unsigned long addr;
+} ebpf_addresses_t;
+
+extern char *ebpf_user_config_dir;
+extern char *ebpf_stock_config_dir;
+
+typedef struct ebpf_data {
+    int *map_fd;
+
+    char *kernel_string;
+    uint32_t running_on_kernel;
+    int isrh;
+} ebpf_data_t;
+
+typedef enum {
+    MODE_RETURN = 0, // This attaches kprobe when the function returns
+    MODE_DEVMODE,    // This stores log given description about the errors raised
+    MODE_ENTRY       // This attaches kprobe when the function is called
+} netdata_run_mode_t;
+
+#define ND_EBPF_DEFAULT_PID_SIZE 32768U
+
+enum netdata_ebpf_map_type {
+    NETDATA_EBPF_MAP_STATIC = 0,
+    NETDATA_EBPF_MAP_RESIZABLE = 1,
+    NETDATA_EBPF_MAP_CONTROLLER = 2,
+    NETDATA_EBPF_MAP_CONTROLLER_UPDATED = 4,
+    NETDATA_EBPF_MAP_PID = 8
+};
+
+enum netdata_controller {
+    NETDATA_CONTROLLER_APPS_ENABLED,
+    NETDATA_CONTROLLER_APPS_LEVEL,
+
+    NETDATA_CONTROLLER_END
+};
+
+// Control how Netdata will monitor PIDs (apps and cgroups)
+typedef enum netdata_apps_level {
+    NETDATA_APPS_LEVEL_REAL_PARENT,
+    NETDATA_APPS_LEVEL_PARENT,
+    NETDATA_APPS_LEVEL_ALL,
+
+    // Present only in user ring
+    NETDATA_APPS_NOT_SET
+} netdata_apps_level_t;
+
+typedef struct ebpf_local_maps {
+    char *name;
+    uint32_t internal_input;
+    uint32_t user_input;
+    uint32_t type;
+    int map_fd;
+} ebpf_local_maps_t;
+
+typedef struct ebpf_specify_name {
+    char *program_name;
+    char *function_to_attach;
+    char *optional;
+    bool retprobe;
+} ebpf_specify_name_t;
+
+typedef enum netdata_ebpf_load_mode {
+    EBPF_LOAD_LEGACY = 1<<0,        // Select legacy mode, this means we will load binaries
+    EBPF_LOAD_CORE = 1<<1,          // When CO-RE is used, it is necessary to use the souce code
+    EBPF_LOAD_PLAY_DICE = 1<<2,      // Take a look on environment and choose the best option
+    EBPF_LOADED_FROM_STOCK = 1<<3,  // Configuration loaded from Stock file
+    EBPF_LOADED_FROM_USER = 1<<4    // Configuration loaded from user
+} netdata_ebpf_load_mode_t;
+#define NETDATA_EBPF_LOAD_METHODS (EBPF_LOAD_LEGACY|EBPF_LOAD_CORE|EBPF_LOAD_PLAY_DICE)
+#define NETDATA_EBPF_LOAD_SOURCE (EBPF_LOADED_FROM_STOCK|EBPF_LOADED_FROM_USER)
+
+typedef enum netdata_ebpf_program_loaded {
+    EBPF_LOAD_PROBE,         // Attach probes on targets
+    EBPF_LOAD_RETPROBE,      // Attach retprobes on targets
+    EBPF_LOAD_TRACEPOINT,    // This stores log given description about the errors raised
+    EBPF_LOAD_TRAMPOLINE,    // This attaches kprobe when the function is called
+} netdata_ebpf_program_loaded_t;
+
+typedef struct netdata_ebpf_targets {
+    char *name;
+    netdata_ebpf_program_loaded_t mode;
+} netdata_ebpf_targets_t;
+
+typedef struct ebpf_plugin_stats {
+    // Load options
+    uint32_t legacy;      // Legacy codes
+    uint32_t core;        // CO-RE codes, this means we are using source code compiled.
+
+    uint32_t threads;     // Total number of threads
+    uint32_t running;     // total number of threads running
+
+    uint32_t probes;      // Number of kprobes loaded
+    uint32_t retprobes;   // Number of kretprobes loaded
+    uint32_t tracepoints; // Number of tracepoints used
+    uint32_t trampolines; // Number of trampolines used
+} ebpf_plugin_stats_t;
+
+typedef enum netdata_apps_integration_flags {
+    NETDATA_EBPF_APPS_FLAG_NO,
+    NETDATA_EBPF_APPS_FLAG_YES,
+    NETDATA_EBPF_APPS_FLAG_CHART_CREATED
+} netdata_apps_integration_flags_t;
+
+typedef struct ebpf_module {
+    const char *thread_name;
+    const char *config_name;
+    int enabled;
+    void *(*start_routine)(void *);
+    int update_every;
+    int global_charts;
+    netdata_apps_integration_flags_t apps_charts;
+    netdata_apps_level_t apps_level;
+    int cgroup_charts;
+    netdata_run_mode_t mode;
+    uint32_t thread_id;
+    int optional;
+    void (*apps_routine)(struct ebpf_module *em, void *ptr);
+    ebpf_local_maps_t *maps;
+    ebpf_specify_name_t *names;
+    uint32_t pid_map_size;
+    struct config *cfg;
+    const char *config_file;
+    uint64_t kernels;
+    netdata_ebpf_load_mode_t load;
+    netdata_ebpf_targets_t *targets;
+    struct bpf_link **probe_links;
+    struct bpf_object *objects;
+    struct netdata_static_thread *thread;
+} ebpf_module_t;
+
+int ebpf_get_kernel_version();
+int get_redhat_release();
+int has_condition_to_run(int version);
+char *ebpf_kernel_suffix(int version, int isrh);
+struct bpf_link **ebpf_load_program(char *plugins_dir, ebpf_module_t *em, int kver, int is_rhf,
+                                           struct bpf_object **obj);
+
+void ebpf_mount_config_name(char *filename, size_t length, char *path, const char *config);
+int ebpf_load_config(struct config *config, char *filename);
+void ebpf_update_module(ebpf_module_t *em, struct btf *btf_file, int kver, int is_rh);
+void ebpf_update_names(ebpf_specify_name_t *opt, ebpf_module_t *em);
+void ebpf_adjust_apps_cgroup(ebpf_module_t *em, netdata_ebpf_program_loaded_t mode);
+char *ebpf_find_symbol(char *search);
+void ebpf_load_addresses(ebpf_addresses_t *fa, int fd);
+void ebpf_fill_algorithms(int *algorithms, size_t length, int algorithm);
+char **ebpf_fill_histogram_dimension(size_t maximum);
+void ebpf_update_stats(ebpf_plugin_stats_t *report, ebpf_module_t *em);
+void ebpf_update_controller(int fd, ebpf_module_t *em);
+void ebpf_update_map_size(struct bpf_map *map, ebpf_local_maps_t *lmap, ebpf_module_t *em, const char *map_name);
+
+// Histogram
+#define NETDATA_EBPF_HIST_MAX_BINS 24UL
+#define NETDATA_DISK_MAX 256U
+#define NETDATA_DISK_HISTOGRAM_LENGTH (NETDATA_DISK_MAX * NETDATA_EBPF_HIST_MAX_BINS)
+
+typedef struct netdata_ebpf_histogram {
+    char *name;
+    char *title;
+    int order;
+    uint64_t histogram[NETDATA_EBPF_HIST_MAX_BINS];
+} netdata_ebpf_histogram_t;
+
+typedef struct ebpf_filesystem_partitions {
+    char *filesystem;
+    char *optional_filesystem;
+    char *family;
+    char *family_name;
+    struct bpf_object *objects;
+    struct bpf_link **probe_links;
+
+    netdata_ebpf_histogram_t hread;
+    netdata_ebpf_histogram_t hwrite;
+    netdata_ebpf_histogram_t hopen;
+    netdata_ebpf_histogram_t hadditional;
+
+    uint32_t flags;
+    uint32_t enabled;
+
+    ebpf_addresses_t addresses;
+    uint64_t kernels;
+} ebpf_filesystem_partitions_t;
+
+typedef struct ebpf_sync_syscalls {
+    char *syscall;
+    int enabled;
+    uint32_t flags;
+
+    // BTF structure
+    struct bpf_object *objects;
+    struct bpf_link **probe_links;
+
+    // BPF structure
+#ifdef LIBBPF_MAJOR_VERSION
+    struct sync_bpf *sync_obj;
+#else
+    void *sync_obj;
+#endif
+} ebpf_sync_syscalls_t;
+
+void ebpf_histogram_dimension_cleanup(char **ptr, size_t length);
+
+// Tracepoint helpers
+// For more information related to tracepoints read https://www.kernel.org/doc/html/latest/trace/tracepoints.html
+int ebpf_is_tracepoint_enabled(char *subsys, char *eventname);
+int ebpf_enable_tracing_values(char *subsys, char *eventname);
+int ebpf_disable_tracing_values(char *subsys, char *eventname);
+
+// BTF Section
+#define EBPF_DEFAULT_BTF_FILE "vmlinux"
+#define EBPF_DEFAULT_BTF_PATH "/sys/kernel/btf"
+#define EBPF_DEFAULT_ERROR_MSG "Cannot open or load BPF file for thread"
+
+// BTF helpers
+#define NETDATA_EBPF_MAX_SYSCALL_LENGTH 255
+
+netdata_ebpf_load_mode_t epbf_convert_string_to_load_mode(char *str);
+netdata_ebpf_program_loaded_t ebpf_convert_core_type(char *str, netdata_run_mode_t lmode);
+void ebpf_select_host_prefix(char *output, size_t length, char *syscall, int kver);
+#ifdef LIBBPF_MAJOR_VERSION
+void ebpf_adjust_thread_load(ebpf_module_t *mod, struct btf *file);
+struct btf *ebpf_parse_btf_file(const char *filename);
+struct btf *ebpf_load_btf_file(char *path, char *filename);
+int ebpf_is_function_inside_btf(struct btf *file, char *function);
+#endif
+
+#endif /* NETDATA_EBPF_H */