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// SPDX-License-Identifier: MIT
/*
* Copyright © 2024 Intel Corporation
*/
#include <fcntl.h>
#include <getopt.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include "drmtest.h"
#include "igt_power.h"
struct measurement {
int battery_index;
const char *rapl_domain;
const char *drm_device;
struct power_sample pre, post;
struct igt_power power;
};
static bool prepare(struct measurement *m)
{
if (m->battery_index >= 0) {
int ret;
ret = igt_power_bat_open(&m->power, m->battery_index);
if (ret) {
fprintf(stderr, "Unable to open battery %d (%d)\n",
m->battery_index, ret);
return false;
}
}
if (m->rapl_domain) {
int ret, fd = -1;
if (m->drm_device) {
fd = open(m->drm_device, O_RDONLY);
if (fd < 0) {
fprintf(stderr, "Unable to open drm device %s (%d)\n",
m->drm_device, -errno);
return false;
}
}
ret = igt_power_open(fd, &m->power, m->rapl_domain);
if (ret) {
if (m->drm_device)
fprintf(stderr, "Unable to open hwmon/rapl for %s (%d)\n",
m->drm_device, ret);
else
fprintf(stderr, "Unable to open rapl domain %s (%d)\n",
m->rapl_domain, ret);
close(fd);
return false;
}
close(fd);
}
return true;
}
static void sample_pre(struct measurement *m)
{
igt_power_get_energy(&m->power, &m->pre);
}
static void sample_post(struct measurement *m)
{
igt_power_get_energy(&m->power, &m->post);
}
static void report(struct measurement *m)
{
if (m->battery_index >= 0)
printf("battery[%d]: energy %f mJ, power %f mW, time %f s\n",
m->battery_index,
igt_power_get_mJ(&m->power, &m->pre, &m->post),
igt_power_get_mW(&m->power, &m->pre, &m->post),
igt_power_get_s(&m->pre, &m->post));
else
printf("%s[%s]: energy %f mJ, power %f mW, time %f s\n",
m->drm_device ?: "rapl", m->rapl_domain,
igt_power_get_mJ(&m->power, &m->pre, &m->post),
igt_power_get_mW(&m->power, &m->pre, &m->post),
igt_power_get_s(&m->pre, &m->post));
igt_power_close(&m->power);
}
static void __attribute__((noreturn)) usage(const char *name)
{
fprintf(stderr,
"Usage: %s [[-d <device>][-r <domain>][-b <battery>]...][-S <seconds>][-s <seconds>]\n"
" -d,--drm <device>\tDRM device (eg. /dev/dri/card0)\n"
" -r,--rapl <domain>\trapl domain (cpu,gpu,pkg,ram)\n"
" -b,--battery <battery>\tbattery index\n"
" -S,--settle <seconds>\tsettling duration\n"
" -s,--sleep <seconds>\tmeasurement duration\n",
name);
exit(1);
}
int main(int argc, char *argv[])
{
struct measurement measurements[8];
int num_measurements = 0;
int measurement_duration = 0;
int settle_duration = 0;
for (;;) {
static const struct option long_options[] = {
{ .name = "drm", .has_arg = required_argument, .val = 'd', },
{ .name = "rapl", .has_arg = required_argument, .val = 'r', },
{ .name = "battery", .has_arg = required_argument, .val = 'b', },
{ .name = "sleep", .has_arg = required_argument, .val = 's', },
{ .name = "settle", .has_arg = required_argument, .val = 'S', },
{}
};
int opt;
opt = getopt_long(argc, argv, "d:r:b:s:S:", long_options, NULL);
if (opt == -1)
break;
switch (opt) {
case 'd':
if (num_measurements >= ARRAY_SIZE(measurements))
usage(argv[0]);
measurements[num_measurements].battery_index = -1;
measurements[num_measurements].rapl_domain = "gpu";
measurements[num_measurements].drm_device = optarg;
num_measurements++;
break;
case 'r':
if (num_measurements >= ARRAY_SIZE(measurements))
usage(argv[0]);
measurements[num_measurements].battery_index = -1;
measurements[num_measurements].rapl_domain = optarg;
measurements[num_measurements].drm_device = NULL;
num_measurements++;
break;
case 'b':
if (num_measurements >= ARRAY_SIZE(measurements))
usage(argv[0]);
measurements[num_measurements].battery_index = atoi(optarg);
measurements[num_measurements].rapl_domain = NULL;
measurements[num_measurements].drm_device = NULL;
num_measurements++;
break;
case 's':
measurement_duration = atoi(optarg);
break;
case 'S':
settle_duration = atoi(optarg);
break;
default:
usage(argv[0]);
break;
}
}
if (num_measurements == 0)
usage(argv[0]);
for (int i = 0; i < num_measurements; i++) {
if (!prepare(&measurements[i]))
usage(argv[0]);
}
sleep(settle_duration);
for (int i = 0; i < num_measurements; i++)
sample_pre(&measurements[i]);
sleep(measurement_duration);
for (int i = 0; i < num_measurements; i++)
sample_post(&measurements[i]);
for (int i = 0; i < num_measurements; i++)
report(&measurements[i]);
return 0;
}
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