[Bug 194635] New: Speed optimisation for framebuffer console driver on Raspberry Pi

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=194635

            Bug ID: 194635
           Summary: Speed optimisation for framebuffer console driver on
                    Raspberry Pi
           Product: Base System
           Version: 10.0-RELEASE
          Hardware: arm
                OS: Any
            Status: Needs Triage
          Severity: Affects Only Me
          Priority: ---
         Component: arm
          Assignee: freebsd-arm at FreeBSD.org
          Reporter: stefan.berndt at imoriath.com

Created attachment 148707
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=148707&action=edit
changes on /sys/arm/broadcom/bcm2835/bcm2835_fb.c

Hi,

I have done some speed optimisations on the Raspberry Pi's console driver.
Please give this to the Raspberry Pi developers.

Benchmarks (time taken to print and sroll 1 milion lines at 1440x900) :
--Original FreeBSD driver--
16 Bit per Pixel: 660 Secends
24 Bit per Pixel: 817 Secends
32 Bit per Pixel: 1086 Secends

--My modifications--
16 Bit per Pixel: 319 Secends
24 Bit per Pixel: 648 Secends
32 Bit per Pixel: 336 Secends

I have tested (working) this resolutions, all BpP each :
640x480, 800x600, 1024x768, 1440x900

This is my first work on FreeBSD kernel, and i hope to fit all reqirements.

Greetings
Stefan Berndt

-- 
You are receiving this mail because:
You are the assignee for the bug.