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DateThu, 04 Jan 2007 00:08:35 -0800
FromUlrich Drepper <>
SubjectRe: [PATCH 2.6.19.1-rt15][RFC] - futex_requeue_pi implementation (requeue from futex1 to PI-futex2)
Pierre Peiffer wrote:
> But, just for information, what is the sys_futex64 for, exactly ? Is
> there a plan to have in the future a 64-bit PID ?

This has nothing to do with PIDs.  We need 64-bit values for more
complex bit fields which can then be stored in the futex.  One example
is a new, much faster rwlock implementation.  These are not practical
without 64-bit futexes.  This is why I asked Ingo to add the code.

-- 
➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖

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