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// SPDX-License-Identifier: GPL-3.0-or-later
#include "debugfs_plugin.h"
struct zone_t {
char *zone_chart_id;
char *subzone_chart_id;
char *name;
char *path;
unsigned long long max_energy_range_uj;
unsigned long long energy_uj;
struct zone_t *subzones;
struct zone_t *prev, *next;
};
static struct zone_t *rapl_zones = NULL;
static bool get_measurement(const char *path, unsigned long long *energy_uj) {
return read_single_number_file(path, energy_uj) == 0;
}
static struct zone_t *get_rapl_zone(const char *control_type __maybe_unused, struct zone_t *parent __maybe_unused, const char *dirname) {
char temp[FILENAME_MAX + 1];
snprintfz(temp, FILENAME_MAX, "%s/%s", dirname, "name");
char name[FILENAME_MAX + 1] = "";
if (read_file(temp, name, sizeof(name) - 1) != 0)
return NULL;
char *trimmed = trim(name);
if (unlikely(trimmed == NULL || trimmed[0] == 0))
return NULL;
snprintfz(temp, FILENAME_MAX, "%s/%s", dirname, "max_energy_range_uj");
unsigned long long max_energy_range_uj = 0;
if (unlikely(read_single_number_file(temp, &max_energy_range_uj) != 0)) {
collector_error("Cannot read %s", temp);
return NULL;
}
snprintfz(temp, FILENAME_MAX, "%s/%s", dirname, "energy_uj");
unsigned long long energy_uj;
if (unlikely(!get_measurement(temp, &energy_uj))) {
collector_info("%s: Cannot read %s", trimmed, temp);
return NULL;
}
struct zone_t *zone = callocz(1, sizeof(*zone));
zone->name = strdupz(trimmed);
zone->path = strdupz(temp);
zone->max_energy_range_uj = max_energy_range_uj;
zone->energy_uj = energy_uj;
collector_info("Found zone: \"%s\"", zone->name);
return zone;
}
static struct zone_t *look_for_rapl_zones(const char *control_type, struct zone_t *parent, const char *path, int depth) {
if(depth > 2)
return NULL;
struct zone_t *base = NULL;
DIR *dir = opendir(path);
if (unlikely(dir == NULL))
return NULL;
struct dirent *de = NULL;
while ((de = readdir(dir))) {
if (de->d_type != DT_DIR || de->d_name[0] == '.')
continue;
if(strncmp(de->d_name, "intel-rapl:", 11) != 0)
continue;
char zone_path[FILENAME_MAX + 1];
snprintfz(zone_path, FILENAME_MAX, "%s/%s", path, de->d_name);
struct zone_t *zone = get_rapl_zone(control_type, parent, zone_path);
if(zone) {
DOUBLE_LINKED_LIST_APPEND_ITEM_UNSAFE(base, zone, prev, next);
if(!parent)
zone->subzones = look_for_rapl_zones(control_type, zone, zone_path, depth + 1);
}
}
closedir(dir);
return base;
}
static struct zone_t *get_main_rapl_zones(void) {
struct zone_t *base = NULL;
char dirname[FILENAME_MAX + 1];
snprintfz(dirname, FILENAME_MAX, "%s%s", netdata_configured_host_prefix, "/sys/devices/virtual/powercap");
DIR *dir = opendir(dirname);
if (unlikely(dir == NULL))
return 0;
struct dirent *de = NULL;
while ((de = readdir(dir))) {
if (de->d_type != DT_DIR || de->d_name[0] == '.')
continue;
if(strncmp(de->d_name, "intel-rapl", 10) != 0)
continue;
char control_type_path[FILENAME_MAX + 1];
snprintfz(control_type_path, FILENAME_MAX, "%s/%s", dirname, de->d_name);
collector_info("Looking at control type \"%s\"", de->d_name);
struct zone_t *zone = look_for_rapl_zones(de->d_name, NULL, control_type_path, 0);
if(zone)
DOUBLE_LINKED_LIST_APPEND_LIST_UNSAFE(base, zone, prev, next);
}
closedir(dir);
return base;
}
int do_sys_devices_virtual_powercap(int update_every, const char *name __maybe_unused) {
if (unlikely(!rapl_zones)) {
rapl_zones = get_main_rapl_zones();
if (unlikely(!rapl_zones)) {
collector_info("Failed to find powercap zones.");
return 1;
}
}
for(struct zone_t *zone = rapl_zones; zone ; zone = zone->next) {
if(!zone->zone_chart_id) {
char id[1000 + 1];
snprintf(id, 1000, "cpu.powercap_intel_rapl_zone_%s", zone->name);
zone->zone_chart_id = strdupz(id);
fprintf(stdout,
"CHART '%s' '' 'Intel RAPL Zone Power Consumption' 'Watts' 'powercap' '%s' '%s' %d %d '' 'debugfs.plugin' 'intel_rapl'\n",
zone->zone_chart_id,
"cpu.powercap_intel_rapl_zone",
debugfs_rrdset_type_name(RRDSET_TYPE_LINE),
NETDATA_CHART_PRIO_POWERCAP,
update_every);
fprintf(stdout,
"CLABEL 'zone' '%s' 0\n"
"CLABEL_COMMIT\n",
zone->name);
fprintf(stdout,
"DIMENSION 'power' '' %s 1 1000000 ''\n",
debugfs_rrd_algorithm_name(RRD_ALGORITHM_INCREMENTAL));
// for the sub-zones
snprintf(id, 1000, "cpu.powercap_intel_rapl_subzones_%s", zone->name);
zone->subzone_chart_id = strdupz(id);
fprintf(stdout,
"CHART '%s' '' 'Intel RAPL Subzones Power Consumption' 'Watts' 'powercap' '%s' '%s' %d %d '' 'debugfs.plugin' 'intel_rapl'\n",
zone->subzone_chart_id,
"cpu.powercap_intel_rapl_subzones",
debugfs_rrdset_type_name(RRDSET_TYPE_LINE),
NETDATA_CHART_PRIO_POWERCAP + 1,
update_every);
fprintf(stdout,
"CLABEL 'zone' '%s' 0\n"
"CLABEL_COMMIT\n",
zone->name);
for(struct zone_t *subzone = zone->subzones; subzone ; subzone = subzone->next) {
fprintf(stdout,
"DIMENSION '%s' '' %s 1 1000000 ''\n",
subzone->name,
debugfs_rrd_algorithm_name(RRD_ALGORITHM_INCREMENTAL));
}
}
if(get_measurement(zone->path, &zone->energy_uj)) {
fprintf(stdout,
"BEGIN '%s'\n"
"SET power = %lld\n"
"END\n"
, zone->zone_chart_id
, zone->energy_uj);
}
if(zone->subzones) {
fprintf(stdout,
"BEGIN '%s'\n",
zone->subzone_chart_id);
for (struct zone_t *subzone = zone->subzones; subzone; subzone = subzone->next) {
if(get_measurement(subzone->path, &subzone->energy_uj)) {
fprintf(stdout,
"SET '%s' = %lld\n",
subzone->name,
subzone->energy_uj);
}
}
fprintf(stdout, "END\n");
}
}
fflush(stdout);
return 0;
}
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