Re: Re : 2.4.0-test2 doesn't compile

[Richard Henderson]

On Sat, Jun 24, 2000 at 10:34:33PM +0200, Manfred Spraul wrote:
> __cacheline_aligned for these variables is IMHO architecture specific, and
> doesn't belong into kernel/sched.c.

I disagree.  There is no concevable method of implementing a spinlock
on any architecture that wouldn't result in ping-ponging that cache line
across the processors.  What is archtecture specfic is whether that
ping-ponging can result in no progress for either processor -- Alpha,
PPC, and MIPS all suffer from this.

That said, a DECLARE_SPINLOCK is a good idea anyway.

r~