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ebpf_process.c
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ebpf_process.c
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// SPDX-License-Identifier: GPL-3.0-or-later
#include <sys/resource.h>
#include "ebpf.h"
#include "ebpf_process.h"
/*****************************************************************
*
* GLOBAL VARIABLES
*
*****************************************************************/
static char *process_dimension_names[NETDATA_KEY_PUBLISH_PROCESS_END] = { "process", "task", "process", "thread" };
static char *process_id_names[NETDATA_KEY_PUBLISH_PROCESS_END] = { "do_exit", "release_task", "_do_fork", "sys_clone" };
static char *status[] = { "process", "zombie" };
static ebpf_local_maps_t process_maps[] = {{.name = "tbl_pid_stats", .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 = "tbl_total_stats", .internal_input = NETDATA_KEY_END_VECTOR,
.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 = "process_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 = NULL, .internal_input = 0, .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
}};
char *tracepoint_sched_type = { "sched" } ;
char *tracepoint_sched_process_exit = { "sched_process_exit" };
char *tracepoint_sched_process_exec = { "sched_process_exec" };
char *tracepoint_sched_process_fork = { "sched_process_fork" };
static int was_sched_process_exit_enabled = 0;
static int was_sched_process_exec_enabled = 0;
static int was_sched_process_fork_enabled = 0;
static netdata_idx_t *process_hash_values = NULL;
ebpf_process_stat_t *process_stat_vector = NULL;
static netdata_syscall_stat_t process_aggregated_data[NETDATA_KEY_PUBLISH_PROCESS_END];
static netdata_publish_syscall_t process_publish_aggregated[NETDATA_KEY_PUBLISH_PROCESS_END];
struct config process_config = { .first_section = NULL,
.last_section = NULL,
.mutex = NETDATA_MUTEX_INITIALIZER,
.index = { .avl_tree = { .root = NULL, .compar = appconfig_section_compare },
.rwlock = AVL_LOCK_INITIALIZER } };
#ifdef NETDATA_DEV_MODE
int process_disable_priority;
#endif
/*****************************************************************
*
* PROCESS DATA AND SEND TO NETDATA
*
*****************************************************************/
/**
* Update publish structure before to send data to Netdata.
*
* @param publish the first output structure with independent dimensions
* @param pvc the second output structure with correlated dimensions
* @param input the structure with the input data.
*/
static void ebpf_update_global_publish(netdata_publish_syscall_t *publish, netdata_publish_vfs_common_t *pvc,
netdata_syscall_stat_t *input)
{
netdata_publish_syscall_t *move = publish;
int selector = NETDATA_KEY_PUBLISH_PROCESS_EXIT;
while (move) {
move->ncall = (input->call > move->pcall) ? input->call - move->pcall : move->pcall - input->call;
move->nbyte = (input->bytes > move->pbyte) ? input->bytes - move->pbyte : move->pbyte - input->bytes;
move->nerr = (input->ecall > move->nerr) ? input->ecall - move->perr : move->perr - input->ecall;
move->pcall = input->call;
move->pbyte = input->bytes;
move->perr = input->ecall;
input = input->next;
move = move->next;
selector++;
}
pvc->running = (long)publish[NETDATA_KEY_PUBLISH_PROCESS_FORK].ncall -
(long)publish[NETDATA_KEY_PUBLISH_PROCESS_CLONE].ncall;
publish[NETDATA_KEY_PUBLISH_PROCESS_RELEASE_TASK].ncall = -publish[NETDATA_KEY_PUBLISH_PROCESS_RELEASE_TASK].ncall;
pvc->zombie = (long)publish[NETDATA_KEY_PUBLISH_PROCESS_EXIT].ncall +
(long)publish[NETDATA_KEY_PUBLISH_PROCESS_RELEASE_TASK].ncall;
}
/**
* Call the necessary functions to create a chart.
*
* @param family the chart family
* @param move the pointer with the values that will be published
*/
static void write_status_chart(char *family, netdata_publish_vfs_common_t *pvc)
{
ebpf_write_begin_chart(family, NETDATA_PROCESS_STATUS_NAME, "");
write_chart_dimension(status[0], (long long)pvc->running);
write_chart_dimension(status[1], (long long)pvc->zombie);
ebpf_write_end_chart();
}
/**
* Send data to Netdata calling auxiliary functions.
*
* @param em the structure with thread information
*/
static void ebpf_process_send_data(ebpf_module_t *em)
{
netdata_publish_vfs_common_t pvc;
ebpf_update_global_publish(process_publish_aggregated, &pvc, process_aggregated_data);
write_count_chart(NETDATA_EXIT_SYSCALL, NETDATA_EBPF_SYSTEM_GROUP,
&process_publish_aggregated[NETDATA_KEY_PUBLISH_PROCESS_EXIT], 2);
write_count_chart(NETDATA_PROCESS_SYSCALL, NETDATA_EBPF_SYSTEM_GROUP,
&process_publish_aggregated[NETDATA_KEY_PUBLISH_PROCESS_FORK], 2);
write_status_chart(NETDATA_EBPF_SYSTEM_GROUP, &pvc);
if (em->mode < MODE_ENTRY) {
write_err_chart(NETDATA_PROCESS_ERROR_NAME, NETDATA_EBPF_SYSTEM_GROUP,
&process_publish_aggregated[NETDATA_KEY_PUBLISH_PROCESS_FORK], 2);
}
}
/**
* Sum values for pid
*
* @param root the structure with all available PIDs
* @param offset the address that we are reading
*
* @return it returns the sum of all PIDs
*/
long long ebpf_process_sum_values_for_pids(struct ebpf_pid_on_target *root, size_t offset)
{
long long ret = 0;
while (root) {
int32_t pid = root->pid;
ebpf_process_stat_t *w = global_process_stats[pid];
if (w) {
uint32_t *value = (uint32_t *)((char *)w + offset);
ret += *value;
}
root = root->next;
}
return ret;
}
/**
* Remove process pid
*
* Remove from PID task table when task_release was called.
*/
void ebpf_process_remove_pids()
{
struct ebpf_pid_stat *pids = ebpf_root_of_pids;
int pid_fd = process_maps[NETDATA_PROCESS_PID_TABLE].map_fd;
while (pids) {
uint32_t pid = pids->pid;
ebpf_process_stat_t *w = global_process_stats[pid];
if (w) {
ebpf_process_stat_release(w);
global_process_stats[pid] = NULL;
bpf_map_delete_elem(pid_fd, &pid);
}
pids = pids->next;
}
}
/**
* Send data to Netdata calling auxiliary functions.
*
* @param root the target list.
*/
void ebpf_process_send_apps_data(struct ebpf_target *root, ebpf_module_t *em)
{
struct ebpf_target *w;
// This algorithm is improved in https://github.com/netdata/netdata/pull/16030
collected_number values[5];
for (w = root; w; w = w->next) {
if (unlikely(!(w->charts_created & (1<<EBPF_MODULE_PROCESS_IDX))))
continue;
values[0] = ebpf_process_sum_values_for_pids(w->root_pid, offsetof(ebpf_process_stat_t, create_process));
values[1] = ebpf_process_sum_values_for_pids(w->root_pid, offsetof(ebpf_process_stat_t, create_thread));
values[2] = ebpf_process_sum_values_for_pids(w->root_pid, offsetof(ebpf_process_stat_t,
exit_call));
values[3] = ebpf_process_sum_values_for_pids(w->root_pid, offsetof(ebpf_process_stat_t,
release_call));
values[4] = ebpf_process_sum_values_for_pids(w->root_pid, offsetof(ebpf_process_stat_t,
task_err));
ebpf_write_begin_chart(NETDATA_APP_FAMILY, w->clean_name, "_ebpf_process_start");
write_chart_dimension("calls", values[0]);
ebpf_write_end_chart();
ebpf_write_begin_chart(NETDATA_APP_FAMILY, w->clean_name, "_ebpf_thread_start");
write_chart_dimension("calls", values[1]);
ebpf_write_end_chart();
ebpf_write_begin_chart(NETDATA_APP_FAMILY, w->clean_name, "_ebpf_task_exit");
write_chart_dimension("calls", values[2]);
ebpf_write_end_chart();
ebpf_write_begin_chart(NETDATA_APP_FAMILY, w->clean_name, "_ebpf_task_released");
write_chart_dimension("calls", values[3]);
ebpf_write_end_chart();
if (em->mode < MODE_ENTRY) {
ebpf_write_begin_chart(NETDATA_APP_FAMILY, w->clean_name, "_ebpf_task_error");
write_chart_dimension("calls", values[4]);
ebpf_write_end_chart();
}
}
ebpf_process_remove_pids();
}
/*****************************************************************
*
* READ INFORMATION FROM KERNEL RING
*
*****************************************************************/
/**
* Read the hash table and store data to allocated vectors.
*
* @param maps_per_core do I need to read all cores?
*/
static void ebpf_read_process_hash_global_tables(netdata_idx_t *stats, int maps_per_core)
{
netdata_idx_t res[NETDATA_KEY_END_VECTOR];
ebpf_read_global_table_stats(res,
process_hash_values,
process_maps[NETDATA_PROCESS_GLOBAL_TABLE].map_fd,
maps_per_core,
0,
NETDATA_KEY_END_VECTOR);
ebpf_read_global_table_stats(stats,
process_hash_values,
process_maps[NETDATA_PROCESS_CTRL_TABLE].map_fd,
maps_per_core,
NETDATA_CONTROLLER_PID_TABLE_ADD,
NETDATA_CONTROLLER_END);
process_aggregated_data[NETDATA_KEY_PUBLISH_PROCESS_EXIT].call = res[NETDATA_KEY_CALLS_DO_EXIT];
process_aggregated_data[NETDATA_KEY_PUBLISH_PROCESS_RELEASE_TASK].call = res[NETDATA_KEY_CALLS_RELEASE_TASK];
process_aggregated_data[NETDATA_KEY_PUBLISH_PROCESS_FORK].call = res[NETDATA_KEY_CALLS_DO_FORK];
process_aggregated_data[NETDATA_KEY_PUBLISH_PROCESS_CLONE].call = res[NETDATA_KEY_CALLS_SYS_CLONE];
process_aggregated_data[NETDATA_KEY_PUBLISH_PROCESS_FORK].ecall = res[NETDATA_KEY_ERROR_DO_FORK];
process_aggregated_data[NETDATA_KEY_PUBLISH_PROCESS_CLONE].ecall = res[NETDATA_KEY_ERROR_SYS_CLONE];
}
/**
* Update cgroup
*
* Update cgroup data based in PID running.
*
* @param maps_per_core do I need to read all cores?
*/
static void ebpf_update_process_cgroup(int maps_per_core)
{
ebpf_cgroup_target_t *ect ;
int pid_fd = process_maps[NETDATA_PROCESS_PID_TABLE].map_fd;
size_t length = sizeof(ebpf_process_stat_t);
if (maps_per_core)
length *= ebpf_nprocs;
pthread_mutex_lock(&mutex_cgroup_shm);
for (ect = ebpf_cgroup_pids; ect; ect = ect->next) {
struct pid_on_target2 *pids;
for (pids = ect->pids; pids; pids = pids->next) {
int pid = pids->pid;
ebpf_process_stat_t *out = &pids->ps;
if (global_process_stats[pid]) {
ebpf_process_stat_t *in = global_process_stats[pid];
memcpy(out, in, sizeof(ebpf_process_stat_t));
} else {
if (bpf_map_lookup_elem(pid_fd, &pid, process_stat_vector)) {
memset(out, 0, sizeof(ebpf_process_stat_t));
}
ebpf_process_apps_accumulator(process_stat_vector, maps_per_core);
memcpy(out, process_stat_vector, sizeof(ebpf_process_stat_t));
memset(process_stat_vector, 0, length);
}
}
}
pthread_mutex_unlock(&mutex_cgroup_shm);
}
/*****************************************************************
*
* FUNCTIONS TO CREATE CHARTS
*
*****************************************************************/
/**
* Create process status chart
*
* @param family the chart family
* @param name the chart name
* @param axis the axis label
* @param web the group name used to attach the chart on dashboard
* @param order the order number of the specified chart
* @param update_every value to overwrite the update frequency set by the server.
*/
static void ebpf_process_status_chart(char *family, char *name, char *axis,
char *web, char *algorithm, int order, int update_every)
{
printf("CHART %s.%s '' 'Process not closed' '%s' '%s' '' line %d %d '' 'ebpf.plugin' 'process'\n",
family,
name,
axis,
web,
order,
update_every);
printf("DIMENSION %s '' %s 1 1\n", status[0], algorithm);
printf("DIMENSION %s '' %s 1 1\n", status[1], algorithm);
}
/**
* Create global charts
*
* Call ebpf_create_chart to create the charts for the collector.
*
* @param em a pointer to the structure with the default values.
*/
static void ebpf_create_global_charts(ebpf_module_t *em)
{
ebpf_create_chart(NETDATA_EBPF_SYSTEM_GROUP,
NETDATA_PROCESS_SYSCALL,
"Start process",
EBPF_COMMON_DIMENSION_CALL,
NETDATA_PROCESS_GROUP,
NULL,
NETDATA_EBPF_CHART_TYPE_LINE,
21002,
ebpf_create_global_dimension,
&process_publish_aggregated[NETDATA_KEY_PUBLISH_PROCESS_FORK],
2, em->update_every, NETDATA_EBPF_MODULE_NAME_PROCESS);
ebpf_create_chart(NETDATA_EBPF_SYSTEM_GROUP,
NETDATA_EXIT_SYSCALL,
"Exit process",
EBPF_COMMON_DIMENSION_CALL,
NETDATA_PROCESS_GROUP,
NULL,
NETDATA_EBPF_CHART_TYPE_LINE,
21003,
ebpf_create_global_dimension,
&process_publish_aggregated[NETDATA_KEY_PUBLISH_PROCESS_EXIT],
2, em->update_every, NETDATA_EBPF_MODULE_NAME_PROCESS);
ebpf_process_status_chart(NETDATA_EBPF_SYSTEM_GROUP,
NETDATA_PROCESS_STATUS_NAME,
EBPF_COMMON_DIMENSION_DIFFERENCE,
NETDATA_PROCESS_GROUP,
ebpf_algorithms[NETDATA_EBPF_ABSOLUTE_IDX],
21004, em->update_every);
if (em->mode < MODE_ENTRY) {
ebpf_create_chart(NETDATA_EBPF_SYSTEM_GROUP,
NETDATA_PROCESS_ERROR_NAME,
"Fails to create process",
EBPF_COMMON_DIMENSION_CALL,
NETDATA_PROCESS_GROUP,
NULL,
NETDATA_EBPF_CHART_TYPE_LINE,
21005,
ebpf_create_global_dimension,
&process_publish_aggregated[NETDATA_KEY_PUBLISH_PROCESS_FORK],
2, em->update_every, NETDATA_EBPF_MODULE_NAME_PROCESS);
}
fflush(stdout);
}
/**
* Create process apps charts
*
* Call ebpf_create_chart to create the charts on apps submenu.
*
* @param em a pointer to the structure with the default values.
* @param ptr a pointer for the targets.
*/
void ebpf_process_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_process_start",
"Process started.",
EBPF_COMMON_DIMENSION_CALL,
NETDATA_PROCESS_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED,
"app.ebpf_process_start",
20161,
update_every,
NETDATA_EBPF_MODULE_NAME_PROCESS);
ebpf_create_chart_labels("app_group", w->name, 1);
ebpf_commit_label();
fprintf(stdout, "DIMENSION calls '' %s 1 1\n", ebpf_algorithms[NETDATA_EBPF_ABSOLUTE_IDX]);
ebpf_write_chart_cmd(NETDATA_APP_FAMILY,
w->clean_name,
"_ebpf_thread_start",
"Threads started.",
EBPF_COMMON_DIMENSION_CALL,
NETDATA_PROCESS_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED,
"app.ebpf_thread_start",
20162,
update_every,
NETDATA_EBPF_MODULE_NAME_PROCESS);
ebpf_create_chart_labels("app_group", w->name, 1);
ebpf_commit_label();
fprintf(stdout, "DIMENSION calls '' %s 1 1\n", ebpf_algorithms[NETDATA_EBPF_ABSOLUTE_IDX]);
ebpf_write_chart_cmd(NETDATA_APP_FAMILY,
w->clean_name,
"_ebpf_task_exit",
"Tasks starts exit process.",
EBPF_COMMON_DIMENSION_CALL,
NETDATA_PROCESS_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED,
"app.ebpf_task_exit",
20163,
update_every,
NETDATA_EBPF_MODULE_NAME_PROCESS);
ebpf_create_chart_labels("app_group", w->name, 1);
ebpf_commit_label();
fprintf(stdout, "DIMENSION calls '' %s 1 1\n", ebpf_algorithms[NETDATA_EBPF_ABSOLUTE_IDX]);
ebpf_write_chart_cmd(NETDATA_APP_FAMILY,
w->clean_name,
"_ebpf_task_released",
"Tasks released.",
EBPF_COMMON_DIMENSION_CALL,
NETDATA_PROCESS_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED,
"app.ebpf_task_released",
20164,
update_every,
NETDATA_EBPF_MODULE_NAME_PROCESS);
ebpf_create_chart_labels("app_group", w->name, 1);
ebpf_commit_label();
fprintf(stdout, "DIMENSION calls '' %s 1 1\n", ebpf_algorithms[NETDATA_EBPF_ABSOLUTE_IDX]);
if (em->mode < MODE_ENTRY) {
ebpf_write_chart_cmd(NETDATA_APP_FAMILY,
w->clean_name,
"_ebpf_task_error",
"Errors to create process or threads.",
EBPF_COMMON_DIMENSION_CALL,
NETDATA_PROCESS_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED,
"app.ebpf_task_error",
20165,
update_every,
NETDATA_EBPF_MODULE_NAME_PROCESS);
ebpf_create_chart_labels("app_group", w->name, 1);
ebpf_commit_label();
fprintf(stdout, "DIMENSION calls '' %s 1 1\n", ebpf_algorithms[NETDATA_EBPF_ABSOLUTE_IDX]);
}
w->charts_created |= 1<<EBPF_MODULE_PROCESS_IDX;
}
em->apps_charts |= NETDATA_EBPF_APPS_FLAG_CHART_CREATED;
}
/*****************************************************************
*
* FUNCTIONS TO CLOSE THE THREAD
*
*****************************************************************/
static void ebpf_obsolete_specific_process_charts(char *type, ebpf_module_t *em);
/**
* Obsolete services
*
* Obsolete all service charts created
*
* @param em a pointer to `struct ebpf_module`
*/
static void ebpf_obsolete_process_services(ebpf_module_t *em)
{
ebpf_write_chart_obsolete(NETDATA_SERVICE_FAMILY,
NETDATA_SYSCALL_APPS_TASK_PROCESS,
"",
"Process started",
EBPF_COMMON_DIMENSION_CALL,
NETDATA_APPS_PROCESS_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED,
NULL,
20065,
em->update_every);
ebpf_write_chart_obsolete(NETDATA_SERVICE_FAMILY,
NETDATA_SYSCALL_APPS_TASK_THREAD,
"",
"Threads started",
EBPF_COMMON_DIMENSION_CALL,
NETDATA_APPS_PROCESS_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED,
NULL,
20066,
em->update_every);
ebpf_write_chart_obsolete(NETDATA_SERVICE_FAMILY,
NETDATA_SYSCALL_APPS_TASK_CLOSE,
"",
"Tasks starts exit process.",
EBPF_COMMON_DIMENSION_CALL,
NETDATA_APPS_PROCESS_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED,
NULL,
20067,
em->update_every);
ebpf_write_chart_obsolete(NETDATA_SERVICE_FAMILY,
NETDATA_SYSCALL_APPS_TASK_EXIT,
"",
"Tasks closed",
EBPF_COMMON_DIMENSION_CALL,
NETDATA_APPS_PROCESS_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED,
NULL,
20068,
em->update_every);
if (em->mode < MODE_ENTRY) {
ebpf_write_chart_obsolete(NETDATA_SERVICE_FAMILY,
NETDATA_SYSCALL_APPS_TASK_ERROR,
"",
"Errors to create process or threads.",
EBPF_COMMON_DIMENSION_CALL,
NETDATA_APPS_PROCESS_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED,
NULL,
20069,
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_process_cgroup_charts(ebpf_module_t *em) {
pthread_mutex_lock(&mutex_cgroup_shm);
ebpf_obsolete_process_services(em);
ebpf_cgroup_target_t *ect;
for (ect = ebpf_cgroup_pids; ect ; ect = ect->next) {
if (ect->systemd)
continue;
ebpf_obsolete_specific_process_charts(ect->name, em);
}
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_process_apps_charts(struct ebpf_module *em)
{
struct ebpf_target *w;
int update_every = em->update_every;
for (w = apps_groups_root_target; w; w = w->next) {
if (unlikely(!(w->charts_created & (1<<EBPF_MODULE_PROCESS_IDX))))
continue;
ebpf_write_chart_obsolete(NETDATA_APP_FAMILY,
w->clean_name,
"_ebpf_process_start",
"Process started.",
EBPF_COMMON_DIMENSION_CALL,
NETDATA_PROCESS_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED,
"app.ebpf_process_start",
20161,
update_every);
ebpf_write_chart_obsolete(NETDATA_APP_FAMILY,
w->clean_name,
"_ebpf_thread_start",
"Threads started.",
EBPF_COMMON_DIMENSION_CALL,
NETDATA_PROCESS_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED,
"app.ebpf_thread_start",
20162,
update_every);
ebpf_write_chart_obsolete(NETDATA_APP_FAMILY,
w->clean_name,
"_ebpf_task_exit",
"Tasks starts exit process.",
EBPF_COMMON_DIMENSION_CALL,
NETDATA_PROCESS_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED,
"app.ebpf_task_exit",
20163,
update_every);
ebpf_write_chart_obsolete(NETDATA_APP_FAMILY,
w->clean_name,
"_ebpf_task_released",
"Tasks released.",
EBPF_COMMON_DIMENSION_CALL,
NETDATA_PROCESS_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED,
"app.ebpf_task_released",
20164,
update_every);
if (em->mode < MODE_ENTRY) {
ebpf_write_chart_obsolete(NETDATA_APP_FAMILY,
w->clean_name,
"_ebpf_task_error",
"Errors to create process or threads.",
EBPF_COMMON_DIMENSION_CALL,
NETDATA_PROCESS_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED,
"app.ebpf_task_error",
20165,
update_every);
}
w->charts_created &= ~(1<<EBPF_MODULE_PROCESS_IDX);
}
}
/**
* Obsolete global
*
* Obsolete global charts created by thread.
*
* @param em a pointer to `struct ebpf_module`
*/
static void ebpf_obsolete_process_global(ebpf_module_t *em)
{
ebpf_write_chart_obsolete(NETDATA_EBPF_SYSTEM_GROUP,
NETDATA_PROCESS_SYSCALL,
"",
"Start process",
EBPF_COMMON_DIMENSION_CALL,
NETDATA_PROCESS_GROUP,
NETDATA_EBPF_CHART_TYPE_LINE,
NULL,
21002,
em->update_every);
ebpf_write_chart_obsolete(NETDATA_EBPF_SYSTEM_GROUP,
NETDATA_EXIT_SYSCALL,
"",
"Exit process",
EBPF_COMMON_DIMENSION_CALL,
NETDATA_PROCESS_GROUP,
NETDATA_EBPF_CHART_TYPE_LINE,
NULL,
21003,
em->update_every);
ebpf_write_chart_obsolete(NETDATA_EBPF_SYSTEM_GROUP,
NETDATA_PROCESS_STATUS_NAME,
"",
"Process not closed",
EBPF_COMMON_DIMENSION_DIFFERENCE,
NETDATA_PROCESS_GROUP,
NETDATA_EBPF_CHART_TYPE_LINE,
NULL,
21004,
em->update_every);
if (em->mode < MODE_ENTRY) {
ebpf_write_chart_obsolete(NETDATA_EBPF_SYSTEM_GROUP,
NETDATA_PROCESS_ERROR_NAME,
"",
"Fails to create process",
EBPF_COMMON_DIMENSION_CALL,
NETDATA_PROCESS_GROUP,
NETDATA_EBPF_CHART_TYPE_LINE,
NULL,
21005,
em->update_every);
}
}
/**
* Process disable tracepoints
*
* Disable tracepoints when the plugin was responsible to enable it.
*/
static void ebpf_process_disable_tracepoints()
{
char *default_message = { "Cannot disable the tracepoint" };
if (!was_sched_process_exit_enabled) {
if (ebpf_disable_tracing_values(tracepoint_sched_type, tracepoint_sched_process_exit))
netdata_log_error("%s %s/%s.", default_message, tracepoint_sched_type, tracepoint_sched_process_exit);
}
if (!was_sched_process_exec_enabled) {
if (ebpf_disable_tracing_values(tracepoint_sched_type, tracepoint_sched_process_exec))
netdata_log_error("%s %s/%s.", default_message, tracepoint_sched_type, tracepoint_sched_process_exec);
}
if (!was_sched_process_fork_enabled) {
if (ebpf_disable_tracing_values(tracepoint_sched_type, tracepoint_sched_process_fork))
netdata_log_error("%s %s/%s.", default_message, tracepoint_sched_type, tracepoint_sched_process_fork);
}
}
/**
* Process Exit
*
* Cancel child thread.
*
* @param ptr thread data.
*/
static void ebpf_process_exit(void *ptr)
{
ebpf_module_t *em = (ebpf_module_t *)ptr;
if (em->enabled == NETDATA_THREAD_EBPF_FUNCTION_RUNNING) {
pthread_mutex_lock(&lock);
if (em->cgroup_charts) {
ebpf_obsolete_process_cgroup_charts(em);
fflush(stdout);
}
if (em->apps_charts & NETDATA_EBPF_APPS_FLAG_CHART_CREATED) {
ebpf_obsolete_process_apps_charts(em);
}
ebpf_obsolete_process_global(em);
#ifdef NETDATA_DEV_MODE
if (ebpf_aral_process_stat)
ebpf_statistic_obsolete_aral_chart(em, process_disable_priority);
#endif
fflush(stdout);
pthread_mutex_unlock(&lock);
}
ebpf_update_kernel_memory_with_vector(&plugin_statistics, em->maps, EBPF_ACTION_STAT_REMOVE);
if (em->objects) {
ebpf_unload_legacy_code(em->objects, em->probe_links);
em->objects = NULL;
em->probe_links = NULL;
}
freez(process_hash_values);
freez(process_stat_vector);
ebpf_process_disable_tracepoints();
pthread_mutex_lock(&ebpf_exit_cleanup);
process_pid_fd = -1;
em->enabled = NETDATA_THREAD_EBPF_STOPPED;
ebpf_update_stats(&plugin_statistics, em);
pthread_mutex_unlock(&ebpf_exit_cleanup);
}
/*****************************************************************
*
* FUNCTIONS WITH THE MAIN LOOP
*
*****************************************************************/
/**
* Sum PIDs
*
* Sum values for all targets.
*
* @param ps structure used to store data
* @param pids input data
*/
static void ebpf_process_sum_cgroup_pids(ebpf_process_stat_t *ps, struct pid_on_target2 *pids)
{
ebpf_process_stat_t accumulator;
memset(&accumulator, 0, sizeof(accumulator));
while (pids) {
ebpf_process_stat_t *pps = &pids->ps;
accumulator.exit_call += pps->exit_call;
accumulator.release_call += pps->release_call;
accumulator.create_process += pps->create_process;
accumulator.create_thread += pps->create_thread;
accumulator.task_err += pps->task_err;
pids = pids->next;
}
ps->exit_call = (accumulator.exit_call >= ps->exit_call) ? accumulator.exit_call : ps->exit_call;
ps->release_call = (accumulator.release_call >= ps->release_call) ? accumulator.release_call : ps->release_call;
ps->create_process = (accumulator.create_process >= ps->create_process) ? accumulator.create_process : ps->create_process;
ps->create_thread = (accumulator.create_thread >= ps->create_thread) ? accumulator.create_thread : ps->create_thread;
ps->task_err = (accumulator.task_err >= ps->task_err) ? accumulator.task_err : ps->task_err;
}
/*
* Send Specific Process data
*
* Send data for specific cgroup/apps.
*
* @param type chart type
* @param values structure with values that will be sent to netdata
* @param em the structure with thread information
*/
static void ebpf_send_specific_process_data(char *type, ebpf_process_stat_t *values, ebpf_module_t *em)
{
ebpf_write_begin_chart(type, NETDATA_SYSCALL_APPS_TASK_PROCESS, "");
write_chart_dimension(process_publish_aggregated[NETDATA_KEY_PUBLISH_PROCESS_FORK].name,
(long long) values->create_process);
ebpf_write_end_chart();
ebpf_write_begin_chart(type, NETDATA_SYSCALL_APPS_TASK_THREAD, "");
write_chart_dimension(process_publish_aggregated[NETDATA_KEY_PUBLISH_PROCESS_CLONE].name,
(long long) values->create_thread);
ebpf_write_end_chart();
ebpf_write_begin_chart(type, NETDATA_SYSCALL_APPS_TASK_EXIT, "");
write_chart_dimension(process_publish_aggregated[NETDATA_KEY_PUBLISH_PROCESS_EXIT].name,
(long long) values->release_call);
ebpf_write_end_chart();
ebpf_write_begin_chart(type, NETDATA_SYSCALL_APPS_TASK_CLOSE, "");
write_chart_dimension(process_publish_aggregated[NETDATA_KEY_PUBLISH_PROCESS_RELEASE_TASK].name,
(long long) values->release_call);
ebpf_write_end_chart();
if (em->mode < MODE_ENTRY) {
ebpf_write_begin_chart(type, NETDATA_SYSCALL_APPS_TASK_ERROR, "");
write_chart_dimension(process_publish_aggregated[NETDATA_KEY_PUBLISH_PROCESS_EXIT].name,
(long long) values->task_err);
ebpf_write_end_chart();
}
}
/**
* Create specific process charts
*
* Create charts for cgroup/application
*
* @param type the chart type.
* @param em the structure with thread information
*/
static void ebpf_create_specific_process_charts(char *type, ebpf_module_t *em)
{
ebpf_create_chart(type, NETDATA_SYSCALL_APPS_TASK_PROCESS, "Process started",
EBPF_COMMON_DIMENSION_CALL, NETDATA_PROCESS_CGROUP_GROUP,
NETDATA_CGROUP_PROCESS_CREATE_CONTEXT, NETDATA_EBPF_CHART_TYPE_LINE,
NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5000,
ebpf_create_global_dimension, &process_publish_aggregated[NETDATA_KEY_PUBLISH_PROCESS_FORK],
1, em->update_every, NETDATA_EBPF_MODULE_NAME_PROCESS);
ebpf_create_chart(type, NETDATA_SYSCALL_APPS_TASK_THREAD, "Threads started",
EBPF_COMMON_DIMENSION_CALL, NETDATA_PROCESS_CGROUP_GROUP,
NETDATA_CGROUP_THREAD_CREATE_CONTEXT, NETDATA_EBPF_CHART_TYPE_LINE,
NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5001,
ebpf_create_global_dimension,
&process_publish_aggregated[NETDATA_KEY_PUBLISH_PROCESS_CLONE],
1, em->update_every, NETDATA_EBPF_MODULE_NAME_PROCESS);
ebpf_create_chart(type, NETDATA_SYSCALL_APPS_TASK_EXIT, "Tasks starts exit process.",
EBPF_COMMON_DIMENSION_CALL, NETDATA_PROCESS_CGROUP_GROUP,
NETDATA_CGROUP_PROCESS_EXIT_CONTEXT,
NETDATA_EBPF_CHART_TYPE_LINE, NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5002,
ebpf_create_global_dimension,
&process_publish_aggregated[NETDATA_KEY_PUBLISH_PROCESS_EXIT],
1, em->update_every, NETDATA_EBPF_MODULE_NAME_PROCESS);
ebpf_create_chart(type, NETDATA_SYSCALL_APPS_TASK_CLOSE, "Tasks closed",
EBPF_COMMON_DIMENSION_CALL, NETDATA_PROCESS_CGROUP_GROUP,
NETDATA_CGROUP_PROCESS_CLOSE_CONTEXT,
NETDATA_EBPF_CHART_TYPE_LINE, NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5003,
ebpf_create_global_dimension,
&process_publish_aggregated[NETDATA_KEY_PUBLISH_PROCESS_RELEASE_TASK],
1, em->update_every, NETDATA_EBPF_MODULE_NAME_PROCESS);
if (em->mode < MODE_ENTRY) {
ebpf_create_chart(type, NETDATA_SYSCALL_APPS_TASK_ERROR, "Errors to create process or threads.",
EBPF_COMMON_DIMENSION_CALL, NETDATA_PROCESS_CGROUP_GROUP,
NETDATA_CGROUP_PROCESS_ERROR_CONTEXT,
NETDATA_EBPF_CHART_TYPE_LINE, NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5004,
ebpf_create_global_dimension,
&process_publish_aggregated[NETDATA_KEY_PUBLISH_PROCESS_EXIT],
1, em->update_every, NETDATA_EBPF_MODULE_NAME_PROCESS);
}
}
/**
* Obsolete specific process charts
*
* Obsolete charts for cgroup/application
*
* @param type the chart type.
* @param em the structure with thread information
*/
static void ebpf_obsolete_specific_process_charts(char *type, ebpf_module_t *em)
{
ebpf_write_chart_obsolete(type, NETDATA_SYSCALL_APPS_TASK_PROCESS, "", "Process started",
EBPF_COMMON_DIMENSION_CALL, NETDATA_PROCESS_GROUP, NETDATA_EBPF_CHART_TYPE_LINE,
NETDATA_CGROUP_PROCESS_CREATE_CONTEXT, NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5000,
em->update_every);
ebpf_write_chart_obsolete(type, NETDATA_SYSCALL_APPS_TASK_THREAD, "", "Threads started",
EBPF_COMMON_DIMENSION_CALL, NETDATA_PROCESS_GROUP, NETDATA_EBPF_CHART_TYPE_LINE,
NETDATA_CGROUP_THREAD_CREATE_CONTEXT, NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5001,
em->update_every);
ebpf_write_chart_obsolete(type, NETDATA_SYSCALL_APPS_TASK_EXIT, "","Tasks starts exit process.",
EBPF_COMMON_DIMENSION_CALL, NETDATA_PROCESS_GROUP, NETDATA_EBPF_CHART_TYPE_LINE,
NETDATA_CGROUP_PROCESS_EXIT_CONTEXT, NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5002,
em->update_every);
ebpf_write_chart_obsolete(type, NETDATA_SYSCALL_APPS_TASK_CLOSE, "","Tasks closed",
EBPF_COMMON_DIMENSION_CALL, NETDATA_PROCESS_GROUP, NETDATA_EBPF_CHART_TYPE_LINE,
NETDATA_CGROUP_PROCESS_CLOSE_CONTEXT, NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5003,
em->update_every);
if (em->mode < MODE_ENTRY) {
ebpf_write_chart_obsolete(type, NETDATA_SYSCALL_APPS_TASK_ERROR, "","Errors to create process or threads.",
EBPF_COMMON_DIMENSION_CALL, NETDATA_PROCESS_GROUP, NETDATA_EBPF_CHART_TYPE_LINE,
NETDATA_CGROUP_PROCESS_ERROR_CONTEXT, NETDATA_CHART_PRIO_CGROUPS_CONTAINERS + 5004,
em->update_every);
}
}
/**
* Create Systemd process Charts
*
* Create charts when systemd is enabled
*
* @param em the structure with thread information
**/
static void ebpf_create_systemd_process_charts(ebpf_module_t *em)
{
ebpf_create_charts_on_systemd(NETDATA_SYSCALL_APPS_TASK_PROCESS, "Process started",
EBPF_COMMON_DIMENSION_CALL, NETDATA_APPS_PROCESS_GROUP,
NETDATA_EBPF_CHART_TYPE_STACKED, 20065,
ebpf_algorithms[NETDATA_EBPF_INCREMENTAL_IDX], NETDATA_SYSTEMD_PROCESS_CREATE_CONTEXT,
NETDATA_EBPF_MODULE_NAME_PROCESS, em->update_every);