Preliminary (empty) implementation of GPU optimisations

This commit is contained in:
Marc Di Luzio 2019-01-30 20:25:29 +00:00
parent 92f8d3225d
commit aeaef7377d
4 changed files with 162 additions and 0 deletions

139
daemon/gamemode-gpu.c Normal file
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@ -0,0 +1,139 @@
/*
Copyright (c) 2017-2018, Feral Interactive
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of Feral Interactive nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
*/
#define _GNU_SOURCE
#include "gamemode.h"
#include "helpers.h"
#include "logging.h"
// TODO
// Gather GPU type and information
// Allow configuration file specifying of gpu info
// Apply Nvidia GPU settings (CoolBits will be needed)
// Apply AMD GPU settings (Will need user changing pwm1_enable)
// Intel?
// Provide documentation on optimisations
/* Enums for GPU vendors */
enum GPUVendor {
Vendor_Invalid = 0,
Vendor_NVIDIA = 0x10de,
Vendor_AMD = 0x1002,
Vendor_Intel = 0x8086
};
/* Storage for static GPU info gathered at start */
struct GameModeGPUInfo {
enum GPUVendor vendor;
int device; /* path to device, ie. /sys/class/drm/card#/ */
};
/**
* Applies or removes Nvidia optimisations
*/
static int apply_gpu_nvidia(bool apply)
{
// Running these commands:
// nvidia-settings -a '[gpu:0]/GPUMemoryTransferRateOffset[3]=1400'
// nvidia-settings -a '[gpu:0]/GPUGraphicsClockOffset[3]=50'
if (apply) {
} else {
}
return 0;
}
/**
* Applies or removes AMD optimisations
*/
static int apply_gpu_amd(bool apply)
{
// We'll want to set both the following:
// core: device/pp_sclk_od (0%+ additional)
// mem: device/pp_mclk_od (0%+ additional)
// Guide from https://www.maketecheasier.com/overclock-amd-gpu-linux/
if (apply) {
} else {
}
return 0;
}
/**
* Attempts to identify the current in use GPU information
*/
int game_mode_identify_gpu(GameModeGPUInfo **info)
{
int status = 0;
/* Verify input, this is programmer error */
if (!info || *info)
FATAL_ERROR("Invalid GameModeGPUInfo passed to %s", __func__);
/* Create the context */
GameModeGPUInfo *new_info = malloc(sizeof(GameModeGPUInfo));
memset(new_info, 0, sizeof(GameModeGPUInfo));
// TODO: Fill in the GPU info
/* Give back the new gpu info */
*info = new_info;
return status;
}
/* Simply used to free the GPU info object */
void game_mode_free_gpu(GameModeGPUInfo **info)
{
/* Simply free the object */
free(*info);
*info = NULL;
}
/**
* Applies GPU optimisations when gamemode is active and removes them after
*/
int game_mode_apply_gpu(const GameModeGPUInfo *info, bool apply)
{
switch (info->vendor) {
case Vendor_NVIDIA:
return apply_gpu_nvidia(apply);
case Vendor_AMD:
return apply_gpu_amd(apply);
default:
break;
}
/* Unsupported GPU vendor, do nothing */
return 0;
}

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@ -63,6 +63,8 @@ struct GameModeContext {
char initial_cpu_mode[64]; /**<Only updates when we can */
struct GameModeGPUInfo *gpu_info; /**<Stored GPU info for the current GPU */
/* Reaper control */
struct {
pthread_t thread;
@ -107,6 +109,9 @@ void game_mode_context_init(GameModeContext *self)
self->config = config_create();
config_init(self->config);
/* Grab the current GPU */
game_mode_identify_gpu(&self->gpu_info);
pthread_rwlock_init(&self->rwlock, NULL);
pthread_mutex_init(&self->reaper.mutex, NULL);
pthread_cond_init(&self->reaper.condition, NULL);
@ -144,6 +149,9 @@ void game_mode_context_destroy(GameModeContext *self)
pthread_cond_destroy(&self->reaper.condition);
pthread_mutex_destroy(&self->reaper.mutex);
/* Destroy the gpu object */
game_mode_free_gpu(&self->gpu_info);
/* Destroy the config object */
config_destroy(self->config);
@ -200,6 +208,9 @@ static void game_mode_context_enter(GameModeContext *self)
/* Inhibit the screensaver */
if (config_get_inhibit_screensaver(self->config))
game_mode_inhibit_screensaver(true);
/* Apply GPU optimisations */
game_mode_apply_gpu(self->gpu_info, true);
}
/**
@ -213,6 +224,9 @@ static void game_mode_context_leave(GameModeContext *self)
LOG_MSG("Leaving Game Mode...\n");
sd_notifyf(0, "STATUS=%sGameMode is currently deactivated.%s\n", "\x1B[1;36m", "\x1B[0m");
/* Remove GPU optimisations */
game_mode_apply_gpu(self->gpu_info, false);
/* UnInhibit the screensaver */
if (config_get_inhibit_screensaver(self->config))
game_mode_inhibit_screensaver(false);

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@ -136,3 +136,11 @@ char *game_mode_resolve_wine_preloader(const pid_t pid);
* Provides a test suite to verify gamemode behaviour
*/
int game_mode_run_client_tests(void);
/** gamemode-gpu.c
* Provides internal APU functions to apply optimisations to gpus
*/
typedef struct GameModeGPUInfo GameModeGPUInfo;
int game_mode_identify_gpu(GameModeGPUInfo **info);
void game_mode_free_gpu(GameModeGPUInfo **info);
int game_mode_apply_gpu(const GameModeGPUInfo *info, bool apply);

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@ -24,6 +24,7 @@ daemon_sources = [
'gamemode-sched.c',
'gamemode-wine.c',
'gamemode-tests.c',
'gamemode-gpu.c',
'daemonize.c',
'dbus_messaging.c',
'governors.c',