On Sat, 21 Apr 2007, Ulrich Drepper wrote:
>
> If you do this, and it has been requested many a times, then please
> generalize it. We have the same issue with futexes. If a FUTEX_WAIT
> call is issues the remaining time in the slot should be given to the
> thread currently owning the futex.
And how the hell do you imagine you'd even *know* what thread holds the
futex?
The whole point of the "f" part of the mutex is that it's fast, and we
never see the non-contended case in the kernel.
So we know who *blocks*, but we don't know who actually didn't block.
Linus
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