1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking.org

System Frame-Buffer Bus Proposed For Linux

Linux Kernel

Published on 18 February 2013 10:34 AM EST
Written by Michael Larabel in Linux Kernel
6 Comments

A System Frame-buffer Bus has been proposed for the Linux kernel. The focus of this new bus is to address the problem of many different graphics drivers, e.g. DRM and FBDEV, attempting to access the graphics card's frame-buffer and no clean way for addressing control of it.

The set of nine large kernel patches for handling the global system frame-buffer access by device drivers within the kernel is being done by David Herrmann. This is the developer that's long been working on the crusade to kill the Linux kernel console.

Up to now in Linux there's been no way to grant a specific driver access to a frame-buffer device and no proper way for later revoking access. Through this System Frame-buffer Bus, devices can now be bound/unbound to drivers so that only one driver has access to a single system frame-buffer at a time. This bus also allows controlling what drivers get loaded. There's also support for a special function so that a driver call can unload all other drivers accessing that system frame-buffer, such as for having a proper DRM driver knocking out all other FBDEV drivers and others that may have been loaded first for the graphics hardware.

David Herrmann introduced this new system frame-buffer bus along with the necessary work to the DVBE and vesafb drivers as an example implementation.

The set of patches presenting this new frame-buffer bus for the Linux kernel is currently residing on the Linux kernel mailing list. It will likely be too quick too soon to get into the Linux 3.9 kernel, but would then make it a possibility for the Linux 3.10 kernel if developers are interested in merging this useful and needed feature.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
Latest Linux Hardware Reviews
  1. MSI X99S SLI PLUS On Linux
  2. NVIDIA GeForce GTX 970 Offers Great Linux Performance
  3. CompuLab Intense-PC2: An Excellent, Fanless, Mini PC Powered By Intel's i7 Haswell
  4. From The Atom 330 To Haswell ULT: Intel Linux Performance Benchmarks
Latest Linux Articles
  1. Open-Source Radeon 2D Performance Is Better With Ubuntu 14.10
  2. RunAbove: A POWER8 Compute Cloud With Offerings Up To 176 Threads
  3. 6-Way Ubuntu 14.10 Linux Desktop Benchmarks
  4. Ubuntu 14.10 XMir System Compositor Benchmarks
Latest Linux News
  1. KDE With Theoretical Client-Side Decorations, Windows 10 Influence
  2. Sandusky Lee: Great Cabinets For Storing All Your Computer Gear
  3. Fedora 21 Beta & Final Release Slip Further
  4. Mesa 10.3.2 Has A Couple Bug-Fixes
  5. RadeonSI/R600g HyperZ Support Gets Turned Back On
  6. openSUSE Factory & Tumbleweed Are Merging
  7. More Fedora Delays: Fedora 21 Beta Slips
  8. Mono Brings C# To The Unreal Engine 4
  9. Coreboot Now Has Support For Intel Broadwell Hardware
  10. Enlightenment's EFL 1.12 Alpha Has Evas GL-DRM Engine, OpenGL ES 1.1 Support
Latest Forum Discussions
  1. HOPE: The Ease Of Python With The Speed Of C++
  2. Users/Developers Threatening Fork Of Debian GNU/Linux
  3. Debian Is Back To Discussing Init Systems, Freedom of Choice
  4. AMD Radeon VDPAU Video Performance With Gallium3D
  5. Updated and Optimized Ubuntu Free Graphics Drivers
  6. Ubuntu 16.04 Might Be The Distribution's Last 32-Bit Release
  7. Linux hacker compares Solaris kernel code:
  8. Advertisements On Phoronix