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|
// SPDX-License-Identifier: GPL-3.0-or-later
#include "ebpf.h"
#include "ebpf_shm.h"
static char *shm_dimension_name[NETDATA_SHM_END] = { "get", "at", "dt", "ctl" };
static netdata_syscall_stat_t shm_aggregated_data[NETDATA_SHM_END];
static netdata_publish_syscall_t shm_publish_aggregated[NETDATA_SHM_END];
netdata_publish_shm_t *shm_vector = NULL;
static netdata_idx_t shm_hash_values[NETDATA_SHM_END];
static netdata_idx_t *shm_values = NULL;
struct config shm_config = { .first_section = NULL,
.last_section = NULL,
.mutex = NETDATA_MUTEX_INITIALIZER,
.index = { .avl_tree = { .root = NULL, .compar = appconfig_section_compare },
.rwlock = AVL_LOCK_INITIALIZER } };
static ebpf_local_maps_t shm_maps[] = {{.name = "tbl_pid_shm", .internal_input = ND_EBPF_DEFAULT_PID_SIZE,
.user_input = 0,
.type = NETDATA_EBPF_MAP_RESIZABLE | NETDATA_EBPF_MAP_PID,
.map_fd = ND_EBPF_MAP_FD_NOT_INITIALIZED,
#ifdef LIBBPF_MAJOR_VERSION
.map_type = BPF_MAP_TYPE_PERCPU_HASH
#endif
},
{.name = "shm_ctrl", .internal_input = NETDATA_CONTROLLER_END,
.user_input = 0,
.type = NETDATA_EBPF_MAP_CONTROLLER,
.map_fd = ND_EBPF_MAP_FD_NOT_INITIALIZED,
#ifdef LIBBPF_MAJOR_VERSION
.map_type = BPF_MAP_TYPE_PERCPU_ARRAY
#endif
},
{.name = "tbl_shm", .internal_input = NETDATA_SHM_END,
.user_input = 0,
.type = NETDATA_EBPF_MAP_STATIC,
.map_fd = ND_EBPF_MAP_FD_NOT_INITIALIZED,
#ifdef LIBBPF_MAJOR_VERSION
.map_type = BPF_MAP_TYPE_PERCPU_ARRAY
#endif
},
{.name = NULL, .internal_input = 0, .user_input = 0}};
netdata_ebpf_targets_t shm_targets[] = { {.name = "shmget", .mode = EBPF_LOAD_TRAMPOLINE},
{.name = "shmat", .mode = EBPF_LOAD_TRAMPOLINE},
{.name = "shmdt", .mode = EBPF_LOAD_TRAMPOLINE},
{.name = "shmctl", .mode = EBPF_LOAD_TRAMPOLINE},
{.name = NULL, .mode = EBPF_LOAD_TRAMPOLINE}};
#ifdef NETDATA_DEV_MODE
int shm_disable_priority;
#endif
struct netdata_static_thread ebpf_read_shm = {
.name = "EBPF_READ_SHM",
.config_section = NULL,
.config_name = NULL,
.env_name = NULL,
.enabled = 1,
.thread = NULL,
.init_routine = NULL,
.start_routine = NULL
};
#ifdef LIBBPF_MAJOR_VERSION
/*****************************************************************
*
* BTF FUNCTIONS
*
*****************************************************************/
/*
* Disable tracepoint
*
* Disable all tracepoints to use exclusively another method.
*
* @param obj is the main structure for bpf objects.
*/
static void ebpf_shm_disable_tracepoint(struct shm_bpf *obj)
{
bpf_program__set_autoload(obj->progs.netdata_syscall_shmget, false);
bpf_program__set_autoload(obj->progs.netdata_syscall_shmat, false);
bpf_program__set_autoload(obj->progs.netdata_syscall_shmdt, false);
bpf_program__set_autoload(obj->progs.netdata_syscall_shmctl, false);
}
/*
* Disable probe
*
* Disable all probes to use exclusively another method.
*
* @param obj is the main structure for bpf objects.
*/
static void ebpf_disable_probe(struct shm_bpf *obj)
{
bpf_program__set_autoload(obj->progs.netdata_shmget_probe, false);
bpf_program__set_autoload(obj->progs.netdata_shmat_probe, false);
bpf_program__set_autoload(obj->progs.netdata_shmdt_probe, false);
bpf_program__set_autoload(obj->progs.netdata_shmctl_probe, false);
}
/*
* Disable trampoline
*
* Disable all trampoline to use exclusively another method.
*
* @param obj is the main structure for bpf objects.
*/
static void ebpf_disable_trampoline(struct shm_bpf *obj)
{
bpf_program__set_autoload(obj->progs.netdata_shmget_fentry, false);
bpf_program__set_autoload(obj->progs.netdata_shmat_fentry, false);
bpf_program__set_autoload(obj->progs.netdata_shmdt_fentry, false);
bpf_program__set_autoload(obj->progs.netdata_shmctl_fentry, false);
}
/**
* Set trampoline target
*
* Set the targets we will monitor.
*
* @param obj is the main structure for bpf objects.
*/
static void ebpf_set_trampoline_target(struct shm_bpf *obj)
{
char syscall[NETDATA_EBPF_MAX_SYSCALL_LENGTH + 1];
ebpf_select_host_prefix(syscall, NETDATA_EBPF_MAX_SYSCALL_LENGTH,
shm_targets[NETDATA_KEY_SHMGET_CALL].name, running_on_kernel);
bpf_program__set_attach_target(obj->progs.netdata_shmget_fentry, 0,
syscall);
ebpf_select_host_prefix(syscall, NETDATA_EBPF_MAX_SYSCALL_LENGTH,
shm_targets[NETDATA_KEY_SHMAT_CALL].name, running_on_kernel);
bpf_program__set_attach_target(obj->progs.netdata_shmat_fentry, 0,
syscall);
ebpf_select_host_prefix(syscall, NETDATA_EBPF_MAX_SYSCALL_LENGTH,
shm_targets[NETDATA_KEY_SHMDT_CALL].name, running_on_kernel);
bpf_program__set_attach_target(obj->progs.netdata_shmdt_fentry, 0,
syscall);
ebpf_select_host_prefix(syscall, NETDATA_EBPF_MAX_SYSCALL_LENGTH,
shm_targets[NETDATA_KEY_SHMCTL_CALL].name, running_on_kernel);
bpf_program__set_attach_target(obj->progs.netdata_shmctl_fentry, 0,
syscall);
}
/**
* SHM Attach Probe
*
* Attach probes to target
*
* @param obj is the main structure for bpf objects.
*
* @return It returns 0 on success and -1 otherwise.
*/
static int ebpf_shm_attach_probe(struct shm_bpf *obj)
{
char syscall[NETDATA_EBPF_MAX_SYSCALL_LENGTH + 1];
ebpf_select_host_prefix(syscall, NETDATA_EBPF_MAX_SYSCALL_LENGTH,
shm_targets[NETDATA_KEY_SHMGET_CALL].name, running_on_kernel);
obj->links.netdata_shmget_probe = bpf_program__attach_kprobe(obj->progs.netdata_shmget_probe,
false, syscall);
long ret = libbpf_get_error(obj->links.netdata_shmget_probe);
if (ret)
return -1;
ebpf_select_host_prefix(syscall, NETDATA_EBPF_MAX_SYSCALL_LENGTH,
shm_targets[NETDATA_KEY_SHMAT_CALL].name, running_on_kernel);
obj->links.netdata_shmat_probe = bpf_program__attach_kprobe(obj->progs.netdata_shmat_probe,
false, syscall);
ret = libbpf_get_error(obj->links.netdata_shmat_probe);
if (ret)
return -1;
ebpf_select_host_prefix(syscall, NETDATA_EBPF_MAX_SYSCALL_LENGTH,
shm_targets[NETDATA_KEY_SHMDT_CALL].name, running_on_kernel);
obj->links.netdata_shmdt_probe = bpf_program__attach_kprobe(obj->progs.netdata_shmdt_probe,
false, syscall);
ret = libbpf_get_error(obj->links.netdata_shmdt_probe);
if (ret)
return -1;
ebpf_select_host_prefix(syscall, NETDATA_EBPF_MAX_SYSCALL_LENGTH,
shm_targets[NETDATA_KEY_SHMCTL_CALL].name, running_on_kernel);
obj->links.netdata_shmctl_probe = bpf_program__attach_kprobe(obj->progs.netdata_shmctl_probe,
false, syscall);
ret = libbpf_get_error(obj->links.netdata_shmctl_probe);
if (ret)
return -1;
return 0;
}
/**
* Set hash tables
*
* Set the values for maps according the value given by kernel.
*/
static void ebpf_shm_set_hash_tables(struct shm_bpf *obj)
{
shm_maps[NETDATA_PID_SHM_TABLE].map_fd = bpf_map__fd(obj->maps.tbl_pid_shm);
shm_maps[NETDATA_SHM_CONTROLLER].map_fd = bpf_map__fd(obj->maps.shm_ctrl);
shm_maps[NETDATA_SHM_GLOBAL_TABLE].map_fd = bpf_map__fd(obj->maps.tbl_shm);
}
/**
* Adjust Map Size
*
* Resize maps according input from users.
*
* @param obj is the main structure for bpf objects.
* @param em structure with configuration
*/
static void ebpf_shm_adjust_map(struct shm_bpf *obj, ebpf_module_t *em)
{
ebpf_update_map_size(obj->maps.tbl_pid_shm, &shm_maps[NETDATA_PID_SHM_TABLE],
em, bpf_map__name(obj->maps.tbl_pid_shm));
ebpf_update_map_type(obj->maps.tbl_shm, &shm_maps[NETDATA_SHM_GLOBAL_TABLE]);
ebpf_update_map_type(obj->maps.tbl_pid_shm, &shm_maps[NETDATA_PID_SHM_TABLE]);
ebpf_update_map_type(obj->maps.shm_ctrl, &shm_maps[NETDATA_SHM_CONTROLLER]);
}
/**
* Load and attach
*
* Load and attach the eBPF code in kernel.
*
* @param obj is the main structure for bpf objects.
* @param em structure with configuration
*
* @return it returns 0 on success and -1 otherwise
*/
static inline int ebpf_shm_load_and_attach(struct shm_bpf *obj, ebpf_module_t *em)
{
netdata_ebpf_targets_t *shmt = em->targets;
netdata_ebpf_program_loaded_t test = shmt[NETDATA_KEY_SHMGET_CALL].mode;
// We are testing only one, because all will have the same behavior
if (test == EBPF_LOAD_TRAMPOLINE ) {
ebpf_shm_disable_tracepoint(obj);
ebpf_disable_probe(obj);
ebpf_set_trampoline_target(obj);
} else if (test == EBPF_LOAD_PROBE || test == EBPF_LOAD_RETPROBE ) {
ebpf_shm_disable_tracepoint(obj);
ebpf_disable_trampoline(obj);
} else {
ebpf_disable_probe(obj);
ebpf_disable_trampoline(obj);
}
ebpf_shm_adjust_map(obj, em);
int ret = shm_bpf__load(obj);
if (!ret) {
if (test != EBPF_LOAD_PROBE && test != EBPF_LOAD_RETPROBE)
shm_bpf__attach(obj);
else
ret = ebpf_shm_attach_probe(obj);
if (!ret)
ebpf_shm_set_hash_tables(obj);
}
return ret;
}
#endif
/*****************************************************************
* FUNCTIONS TO CLOSE THE THREAD
*****************************************************************/
static void ebpf_obsolete_specific_shm_charts(char *type, int update_every);
/**
* Obsolete services
*
* Obsolete all service charts created
*
* @param em a pointer to `struct ebpf_module`
*/
static void ebpf_obsolete_shm_services(ebpf_module_t *em, char *id)
{
ebpf_write_chart_obsolete(NETDATA_SERVICE_FAMILY,
id,
NETDATA_SHMGET_CHART,
"Calls to syscall shmget(2).",
EBPF_COMMON_UNITS_CALLS_PER_SEC,
NETDATA_APPS_IPC_SHM_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED,
NETDATA_SYSTEMD_SHM_GET_CONTEXT,
20191,
em->update_every);
ebpf_write_chart_obsolete(NETDATA_SERVICE_FAMILY,
id,
NETDATA_SHMAT_CHART,
"Calls to syscall shmat(2).",
EBPF_COMMON_UNITS_CALLS_PER_SEC,
NETDATA_APPS_IPC_SHM_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED,
NETDATA_SYSTEMD_SHM_AT_CONTEXT,
20192,
em->update_every);
ebpf_write_chart_obsolete(NETDATA_SERVICE_FAMILY,
id,
NETDATA_SHMDT_CHART,
"Calls to syscall shmdt(2).",
EBPF_COMMON_UNITS_CALLS_PER_SEC,
NETDATA_APPS_IPC_SHM_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED,
NETDATA_SYSTEMD_SHM_DT_CONTEXT,
20193,
em->update_every);
ebpf_write_chart_obsolete(NETDATA_SERVICE_FAMILY,
id,
NETDATA_SHMCTL_CHART,
"Calls to syscall shmctl(2).",
EBPF_COMMON_UNITS_CALLS_PER_SEC,
NETDATA_APPS_IPC_SHM_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED,
NETDATA_SYSTEMD_SHM_CTL_CONTEXT,
20194,
em->update_every);
}
/**
* Obsolete cgroup chart
*
* Send obsolete for all charts created before to close.
*
* @param em a pointer to `struct ebpf_module`
*/
static inline void ebpf_obsolete_shm_cgroup_charts(ebpf_module_t *em) {
pthread_mutex_lock(&mutex_cgroup_shm);
ebpf_cgroup_target_t *ect;
for (ect = ebpf_cgroup_pids; ect ; ect = ect->next) {
if (ect->systemd) {
ebpf_obsolete_shm_services(em, ect->name);
continue;
}
ebpf_obsolete_specific_shm_charts(ect->name, em->update_every);
}
pthread_mutex_unlock(&mutex_cgroup_shm);
}
/**
* Obsolette apps charts
*
* Obsolete apps charts.
*
* @param em a pointer to the structure with the default values.
*/
void ebpf_obsolete_shm_apps_charts(struct ebpf_module *em)
{
struct ebpf_target *w;
int update_every = em->update_every;
pthread_mutex_lock(&collect_data_mutex);
for (w = apps_groups_root_target; w; w = w->next) {
if (unlikely(!(w->charts_created & (1<<EBPF_MODULE_SHM_IDX))))
continue;
ebpf_write_chart_obsolete(NETDATA_APP_FAMILY,
w->clean_name,
"_ebpf_shmget_call",
"Calls to syscall shmget(2).",
EBPF_COMMON_UNITS_CALLS_PER_SEC,
NETDATA_APPS_IPC_SHM_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED,
"app.ebpf_shmget_call",
20191,
update_every);
ebpf_write_chart_obsolete(NETDATA_APP_FAMILY,
w->clean_name,
"_ebpf_shmat_call",
"Calls to syscall shmat(2).",
EBPF_COMMON_UNITS_CALLS_PER_SEC,
NETDATA_APPS_IPC_SHM_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED,
"app.ebpf_shmat_call",
20192,
update_every);
ebpf_write_chart_obsolete(NETDATA_APP_FAMILY,
w->clean_name,
"_ebpf_shmdt_call",
"Calls to syscall shmdt(2).",
EBPF_COMMON_UNITS_CALLS_PER_SEC,
NETDATA_APPS_IPC_SHM_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED,
"app.ebpf_shmdt_call",
20193,
update_every);
ebpf_write_chart_obsolete(NETDATA_APP_FAMILY,
w->clean_name,
"_ebpf_shmctl_call",
"Calls to syscall shmctl(2).",
EBPF_COMMON_UNITS_CALLS_PER_SEC,
NETDATA_APPS_IPC_SHM_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED,
"app.ebpf_shmctl_call",
20194,
update_every);
w->charts_created &= ~(1<<EBPF_MODULE_SHM_IDX);
}
pthread_mutex_unlock(&collect_data_mutex);
}
/**
* Obsolete global
*
* Obsolete global charts created by thread.
*
* @param em a pointer to `struct ebpf_module`
*/
static void ebpf_obsolete_shm_global(ebpf_module_t *em)
{
ebpf_write_chart_obsolete(NETDATA_EBPF_SYSTEM_GROUP,
NETDATA_SHM_GLOBAL_CHART,
"",
"Calls to shared memory system calls",
EBPF_COMMON_UNITS_CALLS_PER_SEC,
NETDATA_SYSTEM_IPC_SHM_SUBMENU,
NETDATA_EBPF_CHART_TYPE_LINE,
"system.shared_memory_calls",
NETDATA_CHART_PRIO_SYSTEM_IPC_SHARED_MEM_CALLS,
em->update_every);
}
/**
* SHM Exit
*
* Cancel child thread.
*
* @param ptr thread data.
*/
static void ebpf_shm_exit(void *pptr)
{
ebpf_module_t *em = CLEANUP_FUNCTION_GET_PTR(pptr);
if(!em) return;
if (ebpf_read_shm.thread)
nd_thread_signal_cancel(ebpf_read_shm.thread);
if (em->enabled == NETDATA_THREAD_EBPF_FUNCTION_RUNNING) {
pthread_mutex_lock(&lock);
if (em->cgroup_charts) {
ebpf_obsolete_shm_cgroup_charts(em);
fflush(stdout);
}
if (em->apps_charts & NETDATA_EBPF_APPS_FLAG_CHART_CREATED) {
ebpf_obsolete_shm_apps_charts(em);
}
ebpf_obsolete_shm_global(em);
fflush(stdout);
pthread_mutex_unlock(&lock);
}
ebpf_update_kernel_memory_with_vector(&plugin_statistics, em->maps, EBPF_ACTION_STAT_REMOVE);
#ifdef LIBBPF_MAJOR_VERSION
if (shm_bpf_obj) {
shm_bpf__destroy(shm_bpf_obj);
shm_bpf_obj = NULL;
}
#endif
if (em->objects) {
ebpf_unload_legacy_code(em->objects, em->probe_links);
em->objects = NULL;
em->probe_links = NULL;
}
pthread_mutex_lock(&ebpf_exit_cleanup);
em->enabled = NETDATA_THREAD_EBPF_STOPPED;
ebpf_update_stats(&plugin_statistics, em);
pthread_mutex_unlock(&ebpf_exit_cleanup);
}
/*****************************************************************
* COLLECTOR THREAD
*****************************************************************/
/**
* Apps Accumulator
*
* Sum all values read from kernel and store in the first address.
*
* @param out the vector with read values.
* @param maps_per_core do I need to read all cores?
*/
static void shm_apps_accumulator(netdata_publish_shm_t *out, int maps_per_core)
{
int i, end = (maps_per_core) ? ebpf_nprocs : 1;
netdata_publish_shm_t *total = &out[0];
for (i = 1; i < end; i++) {
netdata_publish_shm_t *w = &out[i];
total->get += w->get;
total->at += w->at;
total->dt += w->dt;
total->ctl += w->ctl;
}
}
/**
* Update cgroup
*
* Update cgroup data based in
*
* @param maps_per_core do I need to read all cores?
*/
static void ebpf_update_shm_cgroup()
{
netdata_publish_shm_t *cv = shm_vector;
size_t length = sizeof(netdata_publish_shm_t);
ebpf_cgroup_target_t *ect;
memset(cv, 0, length);
pthread_mutex_lock(&mutex_cgroup_shm);
for (ect = ebpf_cgroup_pids; ect; ect = ect->next) {
struct pid_on_target2 *pids;
for (pids = ect->pids; pids; pids = pids->next) {
int pid = pids->pid;
netdata_publish_shm_t *out = &pids->shm;
ebpf_pid_stat_t *local_pid = ebpf_get_pid_entry(pid, 0);
if (local_pid) {
netdata_publish_shm_t *in = &local_pid->shm;
memcpy(out, in, sizeof(netdata_publish_shm_t));
}
}
}
pthread_mutex_unlock(&mutex_cgroup_shm);
}
/**
* Read APPS table
*
* Read the apps table and store data inside the structure.
*
* @param maps_per_core do I need to read all cores?
*/
static void ebpf_read_shm_apps_table(int maps_per_core, int max_period)
{
netdata_publish_shm_t *cv = shm_vector;
int fd = shm_maps[NETDATA_PID_SHM_TABLE].map_fd;
size_t length = sizeof(netdata_publish_shm_t);
if (maps_per_core)
length *= ebpf_nprocs;
uint32_t key = 0, next_key = 0;
while (bpf_map_get_next_key(fd, &key, &next_key) == 0) {
if (bpf_map_lookup_elem(fd, &key, cv)) {
goto end_shm_loop;
}
shm_apps_accumulator(cv, maps_per_core);
ebpf_pid_stat_t *local_pid = ebpf_get_pid_entry(key, 0);
if (!local_pid)
goto end_shm_loop;
netdata_publish_shm_t *publish = &local_pid->shm;
if (!publish->ct || publish->ct != cv->ct) {
memcpy(publish, &cv[0], sizeof(netdata_publish_shm_t));
local_pid->not_updated = 0;
} else if (++local_pid->not_updated >= max_period){
bpf_map_delete_elem(fd, &key);
local_pid->not_updated = 0;
}
end_shm_loop:
// now that we've consumed the value, zero it out in the map.
memset(cv, 0, length);
bpf_map_update_elem(fd, &key, cv, BPF_EXIST);
key = next_key;
}
}
/**
* Send global charts to netdata agent.
*/
static void shm_send_global()
{
ebpf_write_begin_chart(NETDATA_EBPF_SYSTEM_GROUP, NETDATA_SHM_GLOBAL_CHART, "");
write_chart_dimension(
shm_publish_aggregated[NETDATA_KEY_SHMGET_CALL].dimension,
(long long) shm_hash_values[NETDATA_KEY_SHMGET_CALL]
);
write_chart_dimension(
shm_publish_aggregated[NETDATA_KEY_SHMAT_CALL].dimension,
(long long) shm_hash_values[NETDATA_KEY_SHMAT_CALL]
);
write_chart_dimension(
shm_publish_aggregated[NETDATA_KEY_SHMDT_CALL].dimension,
(long long) shm_hash_values[NETDATA_KEY_SHMDT_CALL]
);
write_chart_dimension(
shm_publish_aggregated[NETDATA_KEY_SHMCTL_CALL].dimension,
(long long) shm_hash_values[NETDATA_KEY_SHMCTL_CALL]
);
ebpf_write_end_chart();
}
/**
* Read global counter
*
* Read the table with number of calls for all functions
*
* @param stats vector used to read data from control table.
* @param maps_per_core do I need to read all cores?
*/
static void ebpf_shm_read_global_table(netdata_idx_t *stats, int maps_per_core)
{
ebpf_read_global_table_stats(shm_hash_values,
shm_values,
shm_maps[NETDATA_SHM_GLOBAL_TABLE].map_fd,
maps_per_core,
NETDATA_KEY_SHMGET_CALL,
NETDATA_SHM_END);
ebpf_read_global_table_stats(stats,
shm_values,
shm_maps[NETDATA_SHM_CONTROLLER].map_fd,
maps_per_core,
NETDATA_CONTROLLER_PID_TABLE_ADD,
NETDATA_CONTROLLER_END);
}
/**
* Sum values for all targets.
*/
static void ebpf_shm_sum_pids(netdata_publish_shm_t *shm, struct ebpf_pid_on_target *root)
{
memset(shm, 0, sizeof(netdata_publish_shm_t));
while (root) {
int32_t pid = root->pid;
ebpf_pid_stat_t *pid_stat = ebpf_get_pid_entry(pid, 0);
if (pid_stat) {
netdata_publish_shm_t *w = &pid_stat->shm;
shm->get += w->get;
shm->at += w->at;
shm->dt += w->dt;
shm->ctl += w->ctl;
// reset for next collection.
w->get = 0;
w->at = 0;
w->dt = 0;
w->ctl = 0;
}
root = root->next;
}
}
/**
* Send data to Netdata calling auxiliary functions.
*
* @param root the target list.
*/
void ebpf_shm_send_apps_data(struct ebpf_target *root)
{
struct ebpf_target *w;
pthread_mutex_lock(&collect_data_mutex);
for (w = root; w; w = w->next) {
if (unlikely(!(w->charts_created & (1<<EBPF_MODULE_SHM_IDX))))
continue;
ebpf_write_begin_chart(NETDATA_APP_FAMILY, w->clean_name, "_ebpf_shmget_call");
write_chart_dimension("calls", (long long) w->shm.get);
ebpf_write_end_chart();
ebpf_write_begin_chart(NETDATA_APP_FAMILY, w->clean_name, "_ebpf_shmat_call");
write_chart_dimension("calls", (long long) w->shm.at);
ebpf_write_end_chart();
ebpf_write_begin_chart(NETDATA_APP_FAMILY, w->clean_name, "_ebpf_shmdt_call");
write_chart_dimension("calls", (long long) w->shm.dt);
ebpf_write_end_chart();
ebpf_write_begin_chart(NETDATA_APP_FAMILY, w->clean_name, "_ebpf_shmctl_call");
write_chart_dimension("calls", (long long) w->shm.ctl);
ebpf_write_end_chart();
}
pthread_mutex_unlock(&collect_data_mutex);
}
/**
* Sum values for all targets.
*/
static void ebpf_shm_sum_cgroup_pids(netdata_publish_shm_t *shm, struct pid_on_target2 *root)
{
netdata_publish_shm_t shmv;
memset(&shmv, 0, sizeof(shmv));
while (root) {
netdata_publish_shm_t *w = &root->shm;
shmv.get += w->get;
shmv.at += w->at;
shmv.dt += w->dt;
shmv.ctl += w->ctl;
root = root->next;
}
memcpy(shm, &shmv, sizeof(shmv));
}
/**
* Create specific shared memory charts
*
* Create charts for cgroup/application.
*
* @param type the chart type.
* @param update_every value to overwrite the update frequency set by the server.
*/
static void ebpf_create_specific_shm_charts(char *type, int update_every)
{
char *label = (!strncmp(type, "cgroup_", 7)) ? &type[7] : type;
ebpf_create_chart(type, NETDATA_SHMGET_CHART,
"Calls to syscall shmget(2).",
EBPF_COMMON_UNITS_CALLS_PER_SEC,
NETDATA_APPS_IPC_SHM_GROUP,
NETDATA_CGROUP_SHM_GET_CONTEXT,
NETDATA_EBPF_CHART_TYPE_LINE,
NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5800,
ebpf_create_global_dimension,
&shm_publish_aggregated[NETDATA_KEY_SHMGET_CALL],
1,
update_every,
NETDATA_EBPF_MODULE_NAME_SHM);
ebpf_create_chart_labels("cgroup_name", label, RRDLABEL_SRC_AUTO);
ebpf_commit_label();
ebpf_create_chart(type, NETDATA_SHMAT_CHART,
"Calls to syscall shmat(2).",
EBPF_COMMON_UNITS_CALLS_PER_SEC,
NETDATA_APPS_IPC_SHM_GROUP,
NETDATA_CGROUP_SHM_AT_CONTEXT,
NETDATA_EBPF_CHART_TYPE_LINE,
NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5801,
ebpf_create_global_dimension,
&shm_publish_aggregated[NETDATA_KEY_SHMAT_CALL],
1,
update_every,
NETDATA_EBPF_MODULE_NAME_SHM);
ebpf_create_chart_labels("cgroup_name", label, RRDLABEL_SRC_AUTO);
ebpf_commit_label();
ebpf_create_chart(type, NETDATA_SHMDT_CHART,
"Calls to syscall shmdt(2).",
EBPF_COMMON_UNITS_CALLS_PER_SEC,
NETDATA_APPS_IPC_SHM_GROUP,
NETDATA_CGROUP_SHM_DT_CONTEXT,
NETDATA_EBPF_CHART_TYPE_LINE,
NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5802,
ebpf_create_global_dimension,
&shm_publish_aggregated[NETDATA_KEY_SHMDT_CALL],
1,
update_every,
NETDATA_EBPF_MODULE_NAME_SHM);
ebpf_create_chart_labels("cgroup_name", label, RRDLABEL_SRC_AUTO);
ebpf_commit_label();
ebpf_create_chart(type, NETDATA_SHMCTL_CHART,
"Calls to syscall shmctl(2).",
EBPF_COMMON_UNITS_CALLS_PER_SEC,
NETDATA_APPS_IPC_SHM_GROUP,
NETDATA_CGROUP_SHM_CTL_CONTEXT,
NETDATA_EBPF_CHART_TYPE_LINE,
NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5803,
ebpf_create_global_dimension,
&shm_publish_aggregated[NETDATA_KEY_SHMCTL_CALL],
1,
update_every,
NETDATA_EBPF_MODULE_NAME_SHM);
ebpf_create_chart_labels("cgroup_name", label, RRDLABEL_SRC_AUTO);
ebpf_commit_label();
}
/**
* Obsolete specific shared memory charts
*
* Obsolete charts for cgroup/application.
*
* @param type the chart type.
* @param update_every value to overwrite the update frequency set by the server.
*/
static void ebpf_obsolete_specific_shm_charts(char *type, int update_every)
{
ebpf_write_chart_obsolete(type, NETDATA_SHMGET_CHART,
"",
"Calls to syscall shmget(2).",
EBPF_COMMON_UNITS_CALLS_PER_SEC,
NETDATA_APPS_IPC_SHM_GROUP,
NETDATA_EBPF_CHART_TYPE_LINE, NETDATA_CGROUP_SHM_GET_CONTEXT,
NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5800, update_every);
ebpf_write_chart_obsolete(type, NETDATA_SHMAT_CHART,
"",
"Calls to syscall shmat(2).",
EBPF_COMMON_UNITS_CALLS_PER_SEC,
NETDATA_APPS_IPC_SHM_GROUP,
NETDATA_EBPF_CHART_TYPE_LINE, NETDATA_CGROUP_SHM_AT_CONTEXT,
NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5801, update_every);
ebpf_write_chart_obsolete(type, NETDATA_SHMDT_CHART,
"",
"Calls to syscall shmdt(2).",
EBPF_COMMON_UNITS_CALLS_PER_SEC,
NETDATA_APPS_IPC_SHM_GROUP,
NETDATA_EBPF_CHART_TYPE_LINE, NETDATA_CGROUP_SHM_DT_CONTEXT,
NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5802, update_every);
ebpf_write_chart_obsolete(type, NETDATA_SHMCTL_CHART,
"",
"Calls to syscall shmctl(2).",
EBPF_COMMON_UNITS_CALLS_PER_SEC,
NETDATA_APPS_IPC_SHM_GROUP,
NETDATA_EBPF_CHART_TYPE_LINE, NETDATA_CGROUP_SHM_CTL_CONTEXT,
NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5803, update_every);
}
/**
* Create Systemd Swap Charts
*
* Create charts when systemd is enabled
*
* @param update_every value to overwrite the update frequency set by the server.
**/
static void ebpf_create_systemd_shm_charts(int update_every)
{
static ebpf_systemd_args_t data_shmget = {
.title = "Calls to syscall shmget(2).",
.units = EBPF_COMMON_UNITS_CALLS_PER_SEC,
.family = NETDATA_APPS_IPC_SHM_GROUP,
.charttype = NETDATA_EBPF_CHART_TYPE_STACKED,
.order = 20191,
.algorithm = EBPF_CHART_ALGORITHM_INCREMENTAL,
.context = NETDATA_SYSTEMD_SHM_GET_CONTEXT,
.module = NETDATA_EBPF_MODULE_NAME_SHM,
.update_every = 0,
.suffix = NETDATA_SHMGET_CHART,
.dimension = "calls"
};
static ebpf_systemd_args_t data_shmat = {
.title = "Calls to syscall shmat(2).",
.units = EBPF_COMMON_UNITS_CALLS_PER_SEC,
.family = NETDATA_APPS_IPC_SHM_GROUP,
.charttype = NETDATA_EBPF_CHART_TYPE_STACKED,
.order = 20192,
.algorithm = EBPF_CHART_ALGORITHM_INCREMENTAL,
.context = NETDATA_SYSTEMD_SHM_AT_CONTEXT,
.module = NETDATA_EBPF_MODULE_NAME_SHM,
.update_every = 0,
.suffix = NETDATA_SHMAT_CHART,
.dimension = "calls"
};
static ebpf_systemd_args_t data_shmdt = {
.title = "Calls to syscall shmdt(2).",
.units = EBPF_COMMON_UNITS_CALLS_PER_SEC,
.family = NETDATA_APPS_IPC_SHM_GROUP,
.charttype = NETDATA_EBPF_CHART_TYPE_STACKED,
.order = 20193,
.algorithm = EBPF_CHART_ALGORITHM_INCREMENTAL,
.context = NETDATA_SYSTEMD_SHM_DT_CONTEXT,
.module = NETDATA_EBPF_MODULE_NAME_SHM,
.update_every = 0,
.suffix = NETDATA_SHMDT_CHART,
.dimension = "calls"
};
static ebpf_systemd_args_t data_shmctl = {
.title = "Calls to syscall shmctl(2).",
.units = EBPF_COMMON_UNITS_CALLS_PER_SEC,
.family = NETDATA_APPS_IPC_SHM_GROUP,
.charttype = NETDATA_EBPF_CHART_TYPE_STACKED,
.order = 20194,
.algorithm = EBPF_CHART_ALGORITHM_INCREMENTAL,
.context = NETDATA_SYSTEMD_SHM_CTL_CONTEXT,
.module = NETDATA_EBPF_MODULE_NAME_SHM,
.update_every = 0,
.suffix = NETDATA_SHMCTL_CHART,
.dimension = "calls"
};
if (!data_shmget.update_every)
data_shmat.update_every = data_shmctl.update_every =
data_shmdt.update_every = data_shmget.update_every = update_every;
ebpf_cgroup_target_t *w;
for (w = ebpf_cgroup_pids; w; w = w->next) {
if (unlikely(!w->systemd || w->flags & NETDATA_EBPF_SERVICES_HAS_SHM_CHART))
continue;
data_shmat.id = data_shmctl.id = data_shmdt.id = data_shmget.id = w->name;
ebpf_create_charts_on_systemd(&data_shmat);
ebpf_create_charts_on_systemd(&data_shmctl);
ebpf_create_charts_on_systemd(&data_shmdt);
ebpf_create_charts_on_systemd(&data_shmget);
w->flags |= NETDATA_EBPF_SERVICES_HAS_SHM_CHART;
}
}
/**
* Send Systemd charts
*
* Send collected data to Netdata.
*/
static void ebpf_send_systemd_shm_charts()
{
ebpf_cgroup_target_t *ect;
for (ect = ebpf_cgroup_pids; ect; ect = ect->next) {
if (unlikely(!(ect->flags & NETDATA_EBPF_SERVICES_HAS_SHM_CHART)) ) {
continue;
}
ebpf_write_begin_chart(NETDATA_SERVICE_FAMILY, ect->name, NETDATA_SHMGET_CHART);
write_chart_dimension("calls", (long long)ect->publish_shm.get);
ebpf_write_end_chart();
ebpf_write_begin_chart(NETDATA_SERVICE_FAMILY, ect->name, NETDATA_SHMAT_CHART);
write_chart_dimension("calls", (long long)ect->publish_shm.at);
ebpf_write_end_chart();
ebpf_write_begin_chart(NETDATA_SERVICE_FAMILY, ect->name, NETDATA_SHMDT_CHART);
write_chart_dimension("calls", (long long)ect->publish_shm.dt);
ebpf_write_end_chart();
ebpf_write_begin_chart(NETDATA_SERVICE_FAMILY, ect->name, NETDATA_SHMCTL_CHART);
write_chart_dimension("calls", (long long)ect->publish_shm.ctl);
ebpf_write_end_chart();
}
}
/*
* Send Specific Shared memory data
*
* Send data for specific cgroup/apps.
*
* @param type chart type
* @param values structure with values that will be sent to netdata
*/
static void ebpf_send_specific_shm_data(char *type, netdata_publish_shm_t *values)
{
ebpf_write_begin_chart(type, NETDATA_SHMGET_CHART, "");
write_chart_dimension(shm_publish_aggregated[NETDATA_KEY_SHMGET_CALL].name, (long long)values->get);
ebpf_write_end_chart();
ebpf_write_begin_chart(type, NETDATA_SHMAT_CHART, "");
write_chart_dimension(shm_publish_aggregated[NETDATA_KEY_SHMAT_CALL].name, (long long)values->at);
ebpf_write_end_chart();
ebpf_write_begin_chart(type, NETDATA_SHMDT_CHART, "");
write_chart_dimension(shm_publish_aggregated[NETDATA_KEY_SHMDT_CALL].name, (long long)values->dt);
ebpf_write_end_chart();
ebpf_write_begin_chart(type, NETDATA_SHMCTL_CHART, "");
write_chart_dimension(shm_publish_aggregated[NETDATA_KEY_SHMCTL_CALL].name, (long long)values->ctl);
ebpf_write_end_chart();
}
/**
* Send data to Netdata calling auxiliary functions.
*
* @param update_every value to overwrite the update frequency set by the server.
*/
void ebpf_shm_send_cgroup_data(int update_every)
{
pthread_mutex_lock(&mutex_cgroup_shm);
ebpf_cgroup_target_t *ect;
for (ect = ebpf_cgroup_pids; ect ; ect = ect->next) {
ebpf_shm_sum_cgroup_pids(&ect->publish_shm, ect->pids);
}
if (shm_ebpf_cgroup.header->systemd_enabled) {
if (send_cgroup_chart) {
ebpf_create_systemd_shm_charts(update_every);
}
ebpf_send_systemd_shm_charts();
}
for (ect = ebpf_cgroup_pids; ect ; ect = ect->next) {
if (ect->systemd)
continue;
if (!(ect->flags & NETDATA_EBPF_CGROUP_HAS_SHM_CHART) && ect->updated) {
ebpf_create_specific_shm_charts(ect->name, update_every);
ect->flags |= NETDATA_EBPF_CGROUP_HAS_SHM_CHART;
}
if (ect->flags & NETDATA_EBPF_CGROUP_HAS_SHM_CHART) {
if (ect->updated) {
ebpf_send_specific_shm_data(ect->name, &ect->publish_shm);
} else {
ebpf_obsolete_specific_shm_charts(ect->name, update_every);
ect->flags &= ~NETDATA_EBPF_CGROUP_HAS_SWAP_CHART;
}
}
}
pthread_mutex_unlock(&mutex_cgroup_shm);
}
/**
* Resume apps data
*/
void ebpf_shm_resume_apps_data() {
struct ebpf_target *w;
for (w = apps_groups_root_target; w; w = w->next) {
if (unlikely(!(w->charts_created & (1 << EBPF_MODULE_SHM_IDX))))
continue;
ebpf_shm_sum_pids(&w->shm, w->root_pid);
}
}
/**
* DCstat thread
*
* Thread used to generate dcstat charts.
*
* @param ptr a pointer to `struct ebpf_module`
*
* @return It always return NULL
*/
void *ebpf_read_shm_thread(void *ptr)
{
heartbeat_t hb;
heartbeat_init(&hb);
ebpf_module_t *em = (ebpf_module_t *)ptr;
int maps_per_core = em->maps_per_core;
int update_every = em->update_every;
int counter = update_every - 1;
uint32_t lifetime = em->lifetime;
uint32_t running_time = 0;
usec_t period = update_every * USEC_PER_SEC;
int max_period = update_every * EBPF_CLEANUP_FACTOR;
while (!ebpf_plugin_stop() && running_time < lifetime) {
(void)heartbeat_next(&hb, period);
if (ebpf_plugin_stop() || ++counter != update_every)
continue;
pthread_mutex_lock(&collect_data_mutex);
ebpf_read_shm_apps_table(maps_per_core, max_period);
ebpf_shm_resume_apps_data();
pthread_mutex_unlock(&collect_data_mutex);
counter = 0;
pthread_mutex_lock(&ebpf_exit_cleanup);
if (running_time && !em->running_time)
running_time = update_every;
else
running_time += update_every;
em->running_time = running_time;
pthread_mutex_unlock(&ebpf_exit_cleanup);
}
return NULL;
}
/**
* Main loop for this collector.
*/
static void shm_collector(ebpf_module_t *em)
{
int cgroups = em->cgroup_charts;
int update_every = em->update_every;
heartbeat_t hb;
heartbeat_init(&hb);
int counter = update_every - 1;
int maps_per_core = em->maps_per_core;
uint32_t running_time = 0;
uint32_t lifetime = em->lifetime;
netdata_idx_t *stats = em->hash_table_stats;
memset(stats, 0, sizeof(em->hash_table_stats));
while (!ebpf_plugin_stop() && running_time < lifetime) {
(void)heartbeat_next(&hb, USEC_PER_SEC);
if (ebpf_plugin_stop() || ++counter != update_every)
continue;
counter = 0;
netdata_apps_integration_flags_t apps = em->apps_charts;
ebpf_shm_read_global_table(stats, maps_per_core);
pthread_mutex_lock(&lock);
if (cgroups && shm_ebpf_cgroup.header) {
ebpf_update_shm_cgroup();
}
shm_send_global();
if (apps & NETDATA_EBPF_APPS_FLAG_CHART_CREATED) {
ebpf_shm_send_apps_data(apps_groups_root_target);
}
if (cgroups && shm_ebpf_cgroup.header) {
ebpf_shm_send_cgroup_data(update_every);
}
pthread_mutex_unlock(&lock);
pthread_mutex_lock(&ebpf_exit_cleanup);
if (running_time && !em->running_time)
running_time = update_every;
else
running_time += update_every;
em->running_time = running_time;
pthread_mutex_unlock(&ebpf_exit_cleanup);
}
}
/*****************************************************************
* INITIALIZE THREAD
*****************************************************************/
/**
* Create apps charts
*
* Call ebpf_create_chart to create the charts on apps submenu.
*
* @param em a pointer to the structure with the default values.
*/
void ebpf_shm_create_apps_charts(struct ebpf_module *em, void *ptr)
{
struct ebpf_target *root = ptr;
struct ebpf_target *w;
int update_every = em->update_every;
for (w = root; w; w = w->next) {
if (unlikely(!w->exposed))
continue;
ebpf_write_chart_cmd(NETDATA_APP_FAMILY,
w->clean_name,
"_ebpf_shmget_call",
"Calls to syscall shmget(2).",
EBPF_COMMON_UNITS_CALLS_PER_SEC,
NETDATA_APPS_IPC_SHM_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED,
"app.ebpf_shmget_call",
20191,
update_every,
NETDATA_EBPF_MODULE_NAME_SHM);
ebpf_create_chart_labels("app_group", w->name, RRDLABEL_SRC_AUTO);
ebpf_commit_label();
fprintf(stdout, "DIMENSION calls '' %s 1 1\n", ebpf_algorithms[NETDATA_EBPF_INCREMENTAL_IDX]);
ebpf_write_chart_cmd(NETDATA_APP_FAMILY,
w->clean_name,
"_ebpf_shmat_call",
"Calls to syscall shmat(2).",
EBPF_COMMON_UNITS_CALLS_PER_SEC,
NETDATA_APPS_IPC_SHM_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED,
"app.ebpf_shmat_call",
20192,
update_every,
NETDATA_EBPF_MODULE_NAME_SHM);
ebpf_create_chart_labels("app_group", w->name, RRDLABEL_SRC_AUTO);
ebpf_commit_label();
fprintf(stdout, "DIMENSION calls '' %s 1 1\n", ebpf_algorithms[NETDATA_EBPF_INCREMENTAL_IDX]);
ebpf_write_chart_cmd(NETDATA_APP_FAMILY,
w->clean_name,
"_ebpf_shmdt_call",
"Calls to syscall shmdt(2).",
EBPF_COMMON_UNITS_CALLS_PER_SEC,
NETDATA_APPS_IPC_SHM_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED,
"app.ebpf_shmdt_call",
20193,
update_every,
NETDATA_EBPF_MODULE_NAME_SHM);
ebpf_create_chart_labels("app_group", w->name, RRDLABEL_SRC_AUTO);
ebpf_commit_label();
fprintf(stdout, "DIMENSION calls '' %s 1 1\n", ebpf_algorithms[NETDATA_EBPF_INCREMENTAL_IDX]);
ebpf_write_chart_cmd(NETDATA_APP_FAMILY,
w->clean_name,
"_ebpf_shmctl_call",
"Calls to syscall shmctl(2).",
EBPF_COMMON_UNITS_CALLS_PER_SEC,
NETDATA_APPS_IPC_SHM_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED,
"app.ebpf_shmctl_call",
20194,
update_every,
NETDATA_EBPF_MODULE_NAME_SHM);
ebpf_create_chart_labels("app_group", w->name, RRDLABEL_SRC_AUTO);
ebpf_commit_label();
fprintf(stdout, "DIMENSION calls '' %s 1 1\n", ebpf_algorithms[NETDATA_EBPF_INCREMENTAL_IDX]);
w->charts_created |= 1<<EBPF_MODULE_SHM_IDX;
}
em->apps_charts |= NETDATA_EBPF_APPS_FLAG_CHART_CREATED;
}
/**
* Allocate vectors used with this thread.
*
* We are not testing the return, because callocz does this and shutdown the software
* case it was not possible to allocate.
*
* @param apps is apps enabled?
*/
static void ebpf_shm_allocate_global_vectors(int apps)
{
UNUSED(apps);
shm_vector = callocz((size_t)ebpf_nprocs, sizeof(netdata_publish_shm_t));
shm_values = callocz((size_t)ebpf_nprocs, sizeof(netdata_idx_t));
memset(shm_hash_values, 0, sizeof(shm_hash_values));
}
/*****************************************************************
* MAIN THREAD
*****************************************************************/
/**
* Create global charts
*
* Call ebpf_create_chart to create the charts for the collector.
*
* @param update_every value to overwrite the update frequency set by the server.
*/
static void ebpf_create_shm_charts(int update_every)
{
ebpf_create_chart(
NETDATA_EBPF_SYSTEM_GROUP,
NETDATA_SHM_GLOBAL_CHART,
"Calls to shared memory system calls",
EBPF_COMMON_UNITS_CALLS_PER_SEC,
NETDATA_SYSTEM_IPC_SHM_SUBMENU,
"system.shared_memory_calls",
NETDATA_EBPF_CHART_TYPE_LINE,
NETDATA_CHART_PRIO_SYSTEM_IPC_SHARED_MEM_CALLS,
ebpf_create_global_dimension,
shm_publish_aggregated,
NETDATA_SHM_END,
update_every, NETDATA_EBPF_MODULE_NAME_SHM
);
fflush(stdout);
}
/*
* Load BPF
*
* Load BPF files.
*
* @param em the structure with configuration
*/
static int ebpf_shm_load_bpf(ebpf_module_t *em)
{
#ifdef LIBBPF_MAJOR_VERSION
ebpf_define_map_type(em->maps, em->maps_per_core, running_on_kernel);
#endif
int ret = 0;
ebpf_adjust_apps_cgroup(em, em->targets[NETDATA_KEY_SHMGET_CALL].mode);
if (em->load & EBPF_LOAD_LEGACY) {
em->probe_links = ebpf_load_program(ebpf_plugin_dir, em, running_on_kernel, isrh, &em->objects);
if (!em->probe_links) {
ret = -1;
}
}
#ifdef LIBBPF_MAJOR_VERSION
else {
shm_bpf_obj = shm_bpf__open();
if (!shm_bpf_obj)
ret = -1;
else
ret = ebpf_shm_load_and_attach(shm_bpf_obj, em);
}
#endif
if (ret)
netdata_log_error("%s %s", EBPF_DEFAULT_ERROR_MSG, em->info.thread_name);
return ret;
}
/**
* Shared memory thread.
*
* @param ptr a pointer to `struct ebpf_module`
* @return It always return NULL
*/
void *ebpf_shm_thread(void *ptr)
{
ebpf_module_t *em = (ebpf_module_t *)ptr;
CLEANUP_FUNCTION_REGISTER(ebpf_shm_exit) cleanup_ptr = em;
em->maps = shm_maps;
ebpf_update_pid_table(&shm_maps[NETDATA_PID_SHM_TABLE], em);
#ifdef LIBBPF_MAJOR_VERSION
ebpf_adjust_thread_load(em, default_btf);
#endif
if (ebpf_shm_load_bpf(em)) {
goto endshm;
}
ebpf_shm_allocate_global_vectors(em->apps_charts);
int algorithms[NETDATA_SHM_END] = {
NETDATA_EBPF_INCREMENTAL_IDX,
NETDATA_EBPF_INCREMENTAL_IDX,
NETDATA_EBPF_INCREMENTAL_IDX,
NETDATA_EBPF_INCREMENTAL_IDX
};
ebpf_global_labels(
shm_aggregated_data,
shm_publish_aggregated,
shm_dimension_name,
shm_dimension_name,
algorithms,
NETDATA_SHM_END
);
pthread_mutex_lock(&lock);
ebpf_create_shm_charts(em->update_every);
ebpf_update_stats(&plugin_statistics, em);
ebpf_update_kernel_memory_with_vector(&plugin_statistics, em->maps, EBPF_ACTION_STAT_ADD);
pthread_mutex_unlock(&lock);
ebpf_read_shm.thread = nd_thread_create(ebpf_read_shm.name, NETDATA_THREAD_OPTION_DEFAULT, ebpf_read_shm_thread, em);
shm_collector(em);
endshm:
ebpf_update_disabled_plugin_stats(em);
return NULL;
}
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