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SubjectRe: [PATCH 2.6] Mousedev - better button handling under load
On Sat, Jun 05, 2004 at 02:49:00AM -0500, Dmitry Torokhov wrote:
> Hi,
>
> Currently mousedev combines all hardware motion data that arrivers since
> last time userspace read data into one cooked PS/2 packet. The problem is
> that under heavy or even moderate load, when userspace can't read data
> quickly enough, we start loosing valuable data which manifests in:
>
> - ignoring buton presses as by the time userspace gets to read the data
> button has already been released;
> - click starts in wrong place - by the time userspace got aroungd and read
> the packet mouse moved half way across the screen.
>
> The patch below corrects the issue - it will start accumulating new packet
> every time userspace is behind and button set changes. Size of the buffer
> is 16 packets, i.e. up to 8 pairs of press/release events which should be
> more than enough.
>
> The patch is against Vojtech's tree and shuld apply to -mm. I also have
> cumulative mousedev patch done against 2.6.7-pre2 at:
>
> http://www.geocities.com/dt_or/input/misc/mousedev-2.6.7-rc2-cumulative.patch.gz

Thanks for this. Can I just pull from your tree, or is there more that I
shouldn't take?

--
Vojtech Pavlik
SuSE Labs, SuSE CR
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