Re: implementing Futex

Mike Frysinger
2009-08-17T08:58:15Z

On Fri, Aug 14, 2009 at 07:44, Arnd Bergmann wrote:
> On Friday 14 August 2009, Michael Schnell wrote:
>> Does that mean that both in fact do run in the same mode (I suppose
>> Kernel Mode and thus the CPU's "System Mode" rather than the CPU's "User
>> Mode".
>
> yes
>
>> With that - and supposing that as of Kernel 2.6.31 the sh code I see in
>> Kernel 2.6.30 is used in /asm/generic, I would be able to just use the
>> "generic" case for "implementing" a working Futex syscall for the NIOS).
>
> Well, I haven't put that code into asm-generic/futex.h yet and it's
> too late for 2.6.31, but it should get there eventually, if one of us
> four submits a tested patch ;-).

well, that thread stalled because i posted a question wrt spinlock/irq
usage and didnt get a response ...
-mike