Re: Revised futex(2) man page for review

From: Davidlohr Bueso
Date: Tue Mar 31 2015 - 10:46:20 EST


On Sat, 2015-03-28 at 12:47 +0100, Peter Zijlstra wrote:

> The condition is represented by the futex word, which is an address in
> memory supplied to the futex() system call, and the value at this memâ
> ory location. (While the virtual addresses for the same memory in sepâ
> arate processes may not be equal, the kernel maps them internally so
> that the same memory mapped in different locations will correspond for
> futex() calls.)
>
> When executing a futex operation that requests to block a thread, the
> kernel will only block if the futex word has the value that the calling

Given the use of "word", you should probably state right away that
futexes are only 32bit.

Thanks,
Davidlohr

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