Epanechnikov function equivalence in R
I've got a question about if there are any equivalent functions that use the Epanechnikov kernel as an estimator. So for example, I have some code where I use the "dnorm" and "dunif" functions as...
View ArticleFails to build using 4.19 kernel [closed]
Iam relative new to Linux Debian Buster.Now I try to install the driver for my RTL8723DE WiFi chip.I use this source:https://github.com/rtlwifi-linux/rtw88_8723deWhen I am at the point where I do...
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Hello, I am new to python. When I use Jupyter Notebook the code inside the...
I have tried several times but getting the same error.Please help me.Thank you:)Jupyter Notebook Sample
View ArticleHow to get shell to a running custom linux container
I am developing a container launcher by referring to https://gist.github.com/zserge/4ce3c1ca837b96d58cc5bdcf8befb80e.When I launch /sbin/init process using the container launcher I get the tty console...
View ArticleHow to change the default linux timer interrupt handler?
For an operating systems project, I need to change the behaviour of the timer interrupt handler. To my understanding so far, there are basically two ways:Change the descriptor in the Interrupt...
View ArticleIs there a way to step into kernel code with lldb, or otherwise, on the Mac?
Is there a way to see the code that is being called by a syscall instruction with lldb, or otherwise, on the Mac?I am trying to understand what goes behind the hood when a "write" syscall is called. I...
View ArticleDoes C++ exception framework require kernel support?
I am reading about exception support in C++, probably the result applies to other languages as...
View ArticleGetting kernel error while trying to open Jupyter notebook or Spyder
While opening Jupyter notebook or Spyder, I am continuously getting 'kernel error' notification. Tried to reinstall anaconda3, ipython, kernel but the issue stays. I had downloaded Python 3.7 in...
View ArticleHow should I modify the JSON metadata so that I can open a ipynb file in a...
I can no longer open a ipynb file in a VS-Code jupyter notebook. I have a problem with this one particular file as my other files open without a problem. I think that the problem comes from an error in...
View ArticleSpeaker output to microphone input for Redmi note 4
I have a Redmi Note 4 android device and I have installed LineageOS 16.0. The phone is rooted. I want to redirect the speaker output to the microphone.Could you please suggest the change required in...
View ArticleAndroid Update-Binary from scratch [closed]
You can get a lot of info about update-script in the internet but not even a close information about update-binary. I got different types of update-binaries which can get different commands from...
View Articlehow do we call assembly function in c?
Hello :) i got a serious problem to call my assembly function in my c program, it said that it's undefined reference.here my assembly code :[GLOBAL gdt_flush]gdt_flush: mov eax, [esp+4] ; Get the...
View ArticleProfiling the FreeBSD kernel with DTrace
I'm looking to improve interface destruction time with FreeBSD. Destroying thousands of interfaces takes several minutes on my test machine running -CURRENT, and while -- admittedly -- my use case may...
View Articlewhy printk is printing something weird? [closed]
Part of a syscall function -char buf[256];long copied = strncpy_from_user(buf, msg, sizeof(buf));printk(KERN_INFO "stephen syscall called with \"%s\"\n", buf);This is the test program from where this...
View ArticleWhy? BUG: Bad page map in process *process* pte:b3e05275201 pmd:238adf067
I develop a kernel module using DMA dma_alloc_coherent() and remap_pfn_range().Sometimes, when I close the app that opened the character device, I get the following message in dmesg. That leads to a...
View ArticleHow to call a user-defined syscall as a function
Lets say I have a user-defined syscall: foo (with code number 500).To call it, I simply write in a C file:syscall(SYS_code, args);How can I call it using just foo(args)?
View ArticleTwo files with apparently the same name in one Unix directory
I have two files with apparently the same name in a Unix directory. How is this possible? When I used the -b option with ls, it is giving a different name. The duplicate file is automatically created...
View ArticleError: TIOCGPTPEER required but not available linux | lxc [closed]
I am getting Error: TIOCGPTPEER required but not available when I execute lxc exec container bash.I am using debian9 stretchroot@test-api:~# uname -aLinux test-api 4.9.0-12-amd64 #1 SMP Debian...
View ArticleSearching out the task_struct() corresponding to the PID
I need to make a function which can search out the task struct() corresponding to the PID, and store all the fields in a file.How do i get the task_struct() corresponding to the PID?What i know-I know...
View Articleandroid disable feature like android.hardware.camera.flash [closed]
I rooted my device and i want to disable the flash camera from my device.this is the result of pm list featureslist featuresi tested pm hide android.hardware.camera.flash but didn't work.result...
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