67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
/*
|
|
* Copyright © 2019 Intel Corporation
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice (including the next
|
|
* paragraph) shall be included in all copies or substantial portions of the
|
|
* Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
|
* IN THE SOFTWARE.
|
|
*
|
|
*/
|
|
|
|
#ifndef IGT_GPU_POWER_H
|
|
#define IGT_GPU_POWER_H
|
|
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
|
|
struct gpu_power {
|
|
int fd;
|
|
double scale;
|
|
};
|
|
|
|
struct gpu_power_sample {
|
|
uint64_t energy;
|
|
uint64_t time;
|
|
};
|
|
|
|
int gpu_power_open(struct gpu_power *power);
|
|
bool gpu_power_read(struct gpu_power *power, struct gpu_power_sample *s);
|
|
void gpu_power_close(struct gpu_power *power);
|
|
|
|
static inline double gpu_power_J(const struct gpu_power *p,
|
|
const struct gpu_power_sample *p0,
|
|
const struct gpu_power_sample *p1)
|
|
{
|
|
return (p1->energy - p0->energy) * p->scale;
|
|
}
|
|
|
|
static inline double gpu_power_s(const struct gpu_power *p,
|
|
const struct gpu_power_sample *p0,
|
|
const struct gpu_power_sample *p1)
|
|
{
|
|
return (p1->time - p0->time) * 1e-9;
|
|
}
|
|
|
|
static inline double gpu_power_W(const struct gpu_power *p,
|
|
const struct gpu_power_sample *p0,
|
|
const struct gpu_power_sample *p1)
|
|
{
|
|
return gpu_power_J(p, p0, p1) / gpu_power_s(p, p0, p1);
|
|
}
|
|
|
|
#endif /* IGT_GPU_POWER_H */
|