Stephane Marchesin escreveu: > On Fri, Jul 11, 2008 at 1:12 AM, Tiago Vignatti <[EMAIL PROTECTED]> wrote: >> Yeah, but the current design in the kms (i.e. DRM touching the >> registers) is not good as well. The pointer is jumping a lot -- much >> more than the "old" design -- because with a single device movement it >> emits a hundred of events and a lot of context switch is done. Not cool. >> > > Care to elaborate ? What you describe here sounds like an > implementation-specific issue, more than an issue with KMS.
Okay, I lied here ;) The reason of the cursor jumping is not the number of context switches. Dave helped me to identify the real reason. Try to call a xrandr instance and move the mouse with kernel modesetting. xrandr will do DDC communication which will blocked X in the kernel. With my implementation of the X server using a separate thread to take care the input events this is _reduced_ because signals is not used to wake up the devices. Moreover, with the handling and update of the cursor inside the kernel all would work perfectly smooth (in fact I tried it with my proof-of-concept and it was confirmed). Thanks you, -- Tiago Vignatti C3SL - Centro de Computação Científica e Software Livre www.c3sl.ufpr.br ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ -- _______________________________________________ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
