vbabka

vbabka

Prague

Improve MMTests Comparisons and Reporting

a project by vbabka

The Proposal

(Idea originally suggested by Mel Gorman)

Updated about 7 years ago. No love.

Support for automatically building kernels with user-influenced configuration

an invention by vbabka

Sometimes a user might want to build her own kernel instead of using the provided binary, for various reasons. This means creating own .config and maintaining it through kernel version bumps, which often results in running "make oldconfig" and mostly holding down the enter button to accept upstream defaults. What I envision instead is a way to say where I want my own config to deviate from the distro default (as provided by e.g. kernel-stable on openSUSE), and only those options will override the distro default configuration. This distro default configuration is always updated for new upstream releases, so there should be no need to (manually or automatically) accept new upstream defaults, thus less risk of producing a broken kernel, as e.g. any new kernel options will be configured in the distro kernel so that they work with the distro itself (while upstream defaults might not be safe or desired).

Updated about 5 years ago. 7 hacker ♥️.

Try to model check gfp_flags with cbmc

a project by vbabka

Paul McKenney's blog article inspired me to try apply his approach to kernel's memory allocation flags (gfp_flags) and how their combinations affect the decisions and actions taken during page allocation. Recent upstream development around these flags leads me to believe that the complexity is too high for me to reason about them and change the code without unintended changes in semantics. So it might be worth to let the computer do the hard work. If it works out, the approach should allow to verify that changing the code doesn't result in corner cases where some flag combinations don't work as intended. Then we can attempt to e.g. reduce the number of flags and perform other cleanups without fear of breaking everything.

Updated about 5 years ago. 2 hacker ♥️.

Picopad development

an invention by vbabka

Project Description

Few months ago I bought the new Raspberry Pi Pico based DIY console called Picopad.

Updated 5 months ago. 1 hackers ♥️. 1 follower.
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Activity

  • 5 months ago: vbabka liked early stage kdump support
  • 6 months ago: vbabka started Picopad development
  • 6 months ago: vbabka originated Picopad development
  • about 1 year ago: vbabka disliked Dochazka
  • almost 2 years ago: vbabka liked consolidate mm debugging tools and package them
  • almost 2 years ago: vbabka liked Open Source Firmware for EV chargers using the ESP32 Chip (Autoaid / EN-Plus / EVSEDO)
  • about 7 years ago: vbabka joined crash-python
  • almost 8 years ago: vbabka joined gdb python target / binding to libkdumpfile
  • over 8 years ago: vbabka liked Let’s Encrypt integration into openSUSE/SLE
  • over 8 years ago: vbabka liked Kernel-CI
  • over 8 years ago: vbabka liked Assembly Diff Tool for kGraft
  • over 8 years ago: vbabka liked Multimedia insane migration
  • over 8 years ago: vbabka liked Turbulent Molecular Dynamics Simulations in C
  • over 8 years ago: vbabka liked Learn Haskell by creating an interpreter
  • over 8 years ago: vbabka liked Dive into Linux Kernel Memory management
  • over 8 years ago: vbabka liked Microcorruption CTF
  • over 8 years ago: vbabka liked libkdumpfile/gdb-kdump improvements
  • over 8 years ago: vbabka liked Learn Coccinelle
  • over 8 years ago: vbabka liked Look at Static Code Analysis and Code Coverage for C++
  • over 8 years ago: vbabka liked kGraft analysis tool
  • over 8 years ago: vbabka joined libkdumpfile/gdb-kdump improvements
  • about 9 years ago: vbabka added keyword "modelchecking" to Try to model check gfp_flags with cbmc
  • about 9 years ago: vbabka added keyword "modelchecking" to Try to model check gfp_flags with cbmc
  • about 9 years ago: vbabka added keyword "codeverification" to Try to model check gfp_flags with cbmc
  • about 9 years ago: vbabka started Try to model check gfp_flags with cbmc
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