Re: problem about CLONE_PARENT_SETTID | CLONE_CHILD_CLEARTID ?

From: Roger Gammans (roger@computer-surgery.co.uk)
Date: Wed Dec 11 2002 - 11:22:55 EST

On Tue, Dec 10, 2002 at 11:01:32AM -0800, Ulrich Drepper wrote:
> Hu, Boris wrote:
>
> > I have searched CLONE_PARENT_SETTID in kernel, it seems only to appear in
> > some non-architecture files, such as /include/linux/sched.h and several arch
> [snip]
> the kernel. Nobody cared for Arm so far so there obviously is no kernel
> support.

Unless Russell has changed his mind recently,[1] use of SWP in userspace code
isn't supported.
I suppose this is less of a concern if futex's work on ARM though.

But you'll need some userspace synchronisation primitive to do useful work
with threads.

TTFN
[1] And I haven't been following linux-arm recently. 

-- 
Roger.
Master of Peng Shui.  (Ancient oriental art of Penguin Arranging)
GPG Key FPR: CFF1 F383 F854 4E6A 918D  5CFF A90D E73B 88DE 0B3E
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