Messages in this thread | | | Subject | Re: [PATCH/RFC 2.6.20-rc4 1/1] fbdev,mm: hecuba/E-Ink fbdev driver | From | Peter Zijlstra <> | Date | Fri, 12 Jan 2007 08:15:45 +0100 |
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On Thu, 2007-01-11 at 19:22 -0500, Jaya Kumar wrote:
> Agreed. Though I may be misunderstanding what you mean by first-touch. > Currently, I do a schedule_delayed_work and leave 1s between when the > page_mkwrite callback indicating the first touch is received and when > the deferred IO is processed to actually deliver the data to the > display. I picked 1s because it rounds up the display latency. I > imagine increasing the delay further may make it miss some desirable > display activity. For example, a slider indicating progress of music > may be slower than optimal. Perhaps I should make the delay a module > parameter and leave the choice to the user?
How about implementing the sync_page() aop? Then you could force the flush using msync(MS_SYNC).
Hmm... that might require more surgery but the idea would work I think.
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