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Preliminary (empty) implementation of GPU optimisations
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139
daemon/gamemode-gpu.c
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139
daemon/gamemode-gpu.c
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/*
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Copyright (c) 2017-2018, Feral Interactive
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of Feral Interactive nor the names of its contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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#define _GNU_SOURCE
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#include "gamemode.h"
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#include "helpers.h"
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#include "logging.h"
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// TODO
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// Gather GPU type and information
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// Allow configuration file specifying of gpu info
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// Apply Nvidia GPU settings (CoolBits will be needed)
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// Apply AMD GPU settings (Will need user changing pwm1_enable)
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// Intel?
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// Provide documentation on optimisations
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/* Enums for GPU vendors */
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enum GPUVendor {
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Vendor_Invalid = 0,
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Vendor_NVIDIA = 0x10de,
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Vendor_AMD = 0x1002,
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Vendor_Intel = 0x8086
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};
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/* Storage for static GPU info gathered at start */
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struct GameModeGPUInfo {
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enum GPUVendor vendor;
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int device; /* path to device, ie. /sys/class/drm/card#/ */
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};
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/**
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* Applies or removes Nvidia optimisations
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*/
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static int apply_gpu_nvidia(bool apply)
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{
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// Running these commands:
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// nvidia-settings -a '[gpu:0]/GPUMemoryTransferRateOffset[3]=1400'
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// nvidia-settings -a '[gpu:0]/GPUGraphicsClockOffset[3]=50'
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if (apply) {
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} else {
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}
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return 0;
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}
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/**
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* Applies or removes AMD optimisations
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*/
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static int apply_gpu_amd(bool apply)
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{
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// We'll want to set both the following:
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// core: device/pp_sclk_od (0%+ additional)
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// mem: device/pp_mclk_od (0%+ additional)
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// Guide from https://www.maketecheasier.com/overclock-amd-gpu-linux/
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if (apply) {
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} else {
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}
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return 0;
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}
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/**
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* Attempts to identify the current in use GPU information
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*/
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int game_mode_identify_gpu(GameModeGPUInfo **info)
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{
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int status = 0;
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/* Verify input, this is programmer error */
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if (!info || *info)
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FATAL_ERROR("Invalid GameModeGPUInfo passed to %s", __func__);
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/* Create the context */
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GameModeGPUInfo *new_info = malloc(sizeof(GameModeGPUInfo));
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memset(new_info, 0, sizeof(GameModeGPUInfo));
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// TODO: Fill in the GPU info
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/* Give back the new gpu info */
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*info = new_info;
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return status;
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}
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/* Simply used to free the GPU info object */
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void game_mode_free_gpu(GameModeGPUInfo **info)
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{
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/* Simply free the object */
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free(*info);
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*info = NULL;
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}
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/**
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* Applies GPU optimisations when gamemode is active and removes them after
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*/
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int game_mode_apply_gpu(const GameModeGPUInfo *info, bool apply)
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{
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switch (info->vendor) {
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case Vendor_NVIDIA:
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return apply_gpu_nvidia(apply);
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case Vendor_AMD:
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return apply_gpu_amd(apply);
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default:
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break;
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}
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/* Unsupported GPU vendor, do nothing */
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return 0;
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}
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@ -63,6 +63,8 @@ struct GameModeContext {
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char initial_cpu_mode[64]; /**<Only updates when we can */
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struct GameModeGPUInfo *gpu_info; /**<Stored GPU info for the current GPU */
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/* Reaper control */
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struct {
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pthread_t thread;
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@ -107,6 +109,9 @@ void game_mode_context_init(GameModeContext *self)
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self->config = config_create();
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config_init(self->config);
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/* Grab the current GPU */
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game_mode_identify_gpu(&self->gpu_info);
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pthread_rwlock_init(&self->rwlock, NULL);
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pthread_mutex_init(&self->reaper.mutex, NULL);
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pthread_cond_init(&self->reaper.condition, NULL);
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@ -144,6 +149,9 @@ void game_mode_context_destroy(GameModeContext *self)
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pthread_cond_destroy(&self->reaper.condition);
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pthread_mutex_destroy(&self->reaper.mutex);
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/* Destroy the gpu object */
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game_mode_free_gpu(&self->gpu_info);
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/* Destroy the config object */
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config_destroy(self->config);
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@ -200,6 +208,9 @@ static void game_mode_context_enter(GameModeContext *self)
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/* Inhibit the screensaver */
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if (config_get_inhibit_screensaver(self->config))
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game_mode_inhibit_screensaver(true);
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/* Apply GPU optimisations */
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game_mode_apply_gpu(self->gpu_info, true);
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}
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/**
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@ -213,6 +224,9 @@ static void game_mode_context_leave(GameModeContext *self)
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LOG_MSG("Leaving Game Mode...\n");
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sd_notifyf(0, "STATUS=%sGameMode is currently deactivated.%s\n", "\x1B[1;36m", "\x1B[0m");
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/* Remove GPU optimisations */
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game_mode_apply_gpu(self->gpu_info, false);
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/* UnInhibit the screensaver */
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if (config_get_inhibit_screensaver(self->config))
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game_mode_inhibit_screensaver(false);
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@ -136,3 +136,11 @@ char *game_mode_resolve_wine_preloader(const pid_t pid);
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* Provides a test suite to verify gamemode behaviour
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*/
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int game_mode_run_client_tests(void);
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/** gamemode-gpu.c
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* Provides internal APU functions to apply optimisations to gpus
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*/
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typedef struct GameModeGPUInfo GameModeGPUInfo;
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int game_mode_identify_gpu(GameModeGPUInfo **info);
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void game_mode_free_gpu(GameModeGPUInfo **info);
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int game_mode_apply_gpu(const GameModeGPUInfo *info, bool apply);
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'gamemode-sched.c',
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'gamemode-wine.c',
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'gamemode-tests.c',
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'gamemode-gpu.c',
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'daemonize.c',
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'dbus_messaging.c',
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'governors.c',
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