nvctrl: fan speed

src/gpu.cpp

@@ -64,6 +64,7 @@ void getNvidiaGpuInfo(const struct overlay_params& params){
         gpu_info.MemClock = nvctrl_info.MemClock;
         gpu_info.powerUsage = 0;
         gpu_info.memoryTotal = nvctrl_info.memoryTotal;
+        gpu_info.fan_speed = nvctrl_info.fan_speed;
         return;
     }
 #endif

src/nvctrl.cpp

@@ -156,4 +156,13 @@ void getNvctrlInfo(){
                         NV_CTRL_USED_DEDICATED_GPU_MEMORY,
                         &memused);
     nvctrl_info.memoryUsed = memused;
+
+    int64_t fan_speed = 0;
+    nvctrl.XNVCTRLQueryTargetAttribute64(display.get(),
+                    NV_CTRL_TARGET_TYPE_GPU,
+                    0,
+                    0,
+                    NV_CTRL_THERMAL_COOLER_SPEED,
+                    &fan_speed);
+    nvctrl_info.fan_speed = fan_speed;
 }

src/nvctrl.h

@@ -9,6 +9,7 @@ struct nvctrlInfo{
     float memoryTotal;
     int MemClock;
     int CoreClock;
+    int fan_speed;
 };
 
 extern struct nvctrlInfo nvctrl_info;

src/nvidia_info.h

@@ -6,7 +6,7 @@
 #include "overlay_params.h"
 
 extern nvmlReturn_t result;
-extern unsigned int nvidiaTemp, processSamplesCount, *vgpuInstanceSamplesCount, nvidiaCoreClock, nvidiaMemClock, nvidiaPowerUsage;
+extern unsigned int nvidiaTemp, processSamplesCount, *vgpuInstanceSamplesCount, nvidiaCoreClock, nvidiaMemClock, nvidiaPowerUsage, NvidiaFanSpeed;
 extern nvmlDevice_t nvidiaDevice;
 extern struct nvmlUtilization_st nvidiaUtilization;
 extern struct nvmlMemory_st nvidiaMemory;