On 4/21/07, Linus Torvalds <[EMAIL PROTECTED]> wrote:
And how the hell do you imagine you'd even *know* what thread holds the futex?
We know this in most cases. This is information recorded, for instance, in the mutex data structure. You might have missed my "the interface must be extended" part. This means the PID of the owning thread will have to be passed done. For PI mutexes this is not necessary since the kernel already has access to the information.
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.
See above. Believe me, I know how futexes work. But I also know what additional information we collect. For mutexes and in part for rwlocks we know which thread owns the sync object. In that case we can easily provide the kernel with the information. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
