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SubjectRe: [PATCH v2] Input: evdev - Add EVIOC mechanism to extract the MT slot state
> 2 different processes should be fine; the problem would be if 2 threads
> of the same process share the same file descriptor. So far the rest of
> evdev copes just fine with multiple threads using the same fd (all
> operations are atomic in this regard), setting ABS_MT_SLOT before
> fetching the state break this property.

Are we talking about the need for a per-client mutex, or something
more subtle, like introducing indirect coupling between threads
through per-client states? The former ought to be easily remedied.


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