mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
d4e3d455a1
Move the handy utility to measure the GPU energy consumption using RAPL msr into a common lib so that it can be reused easily. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Andi Shyti <andi.shyti@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200417152018.13079-1-chris@chris-wilson.co.uk
25 lines
406 B
C
25 lines
406 B
C
// SPDX-License-Identifier: MIT
|
|
/*
|
|
* Copyright © 2020 Intel Corporation
|
|
*/
|
|
|
|
#include <asm/msr.h>
|
|
|
|
#include "librapl.h"
|
|
|
|
u64 librapl_energy_uJ(void)
|
|
{
|
|
unsigned long long power;
|
|
u32 units;
|
|
|
|
if (rdmsrl_safe(MSR_RAPL_POWER_UNIT, &power))
|
|
return 0;
|
|
|
|
units = (power & 0x1f00) >> 8;
|
|
|
|
if (rdmsrl_safe(MSR_PP1_ENERGY_STATUS, &power))
|
|
return 0;
|
|
|
|
return (1000000 * power) >> units; /* convert to uJ */
|
|
}
|