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Linux Kernel Space and Graphics: Linux Memory Management, Dbus-Broker 26, Vulkan Wayland Compositors

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Graphics/Benchmarks
Linux
  • The Maple Tree, A Modern Data Structure for a Complex Problem

    The Linux Memory Management layer supports the very common technique of virtual memory. Linux splits blocks of virtual memory into areas specified by the c structure vm_area_struct. Each vm_area_struct contain information associated with mapped memory and are used to find the associated pages of memory which contain the actual information. Virtual memory areas (VMAs) could be the contents of a file on disk, the memory that contains the program, or even the memory the program uses during execution. Literally everything that is run on Linux uses vm_area_struct for memory mapping. This vital area of the kernel needs to be quick and avoid contention whenever possible.

  • Dbus-Broker 26 Released For High Performance D-Bus

    With the BUS1 in-kernel IPC not panning out and not seeing any major code work in nearly two years, the user-space based, D-Bus compatible DBus-Broker remains the performant and current option for those looking at something faster and more reliable than D-Bus itself.

  • Vulkan Wayland Compositors Are Nearing Reality - Phoronix

    One of the last pieces of the puzzle for supporting an entirely Vulkan-based Wayland compositor is coming together with a new extension that looks like it will be merged soon and there already being work pending against Sway/WLROOTS to make use of the Vulkan path.

    The VK_EXT_physical_device_drm extension to Vulkan has been in the works for a number of months and is for allowing the mapping of Vulkan physical devices and DRM nodes. VK_EXT_physical_device_drm allows for querying DRM properties for physical devices and in turn matching the with DRM nodes on Linux systems.

  • Mesa's R600 Driver Nears Feature Complete NIR Support For Radeon HD 5000/6000 Series - Phoronix

    For those still making use of pre-GCN AMD graphics cards supported by the R600 Gallium3D driver (namely the Radeon HD 5000/6000 series), the open-source "R600g" Gallium3D driver now has nearly feature complete NIR support.

    Gert Wollny has been near single handedly working on NIR support for the R600g driver to make use of this modern graphics driver intermediate representation as an alternative to the long-standing Gallium3D TGSI IR.

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