On Fri, 18 Dec 1998, MOLNAR Ingo wrote:
> On Fri, 18 Dec 1998, Rik van Riel wrote:
>
> > > > All it takes is one pointer per processor, so it can be done
> > > > (very) cheaply.
> > > it's _not_ that cheap since it means a cross-CPU message pass.
> > That should be cheaper than an 'inapropriate' context switch
> > or a truckload of cache misses/invalidates.
> (sure, i just pointed out that the mechanizm you were suggesting is
> fundamentally wrong on SMP.)
OK, then what should we do?
> it looks only for idle processes _in the current version_. As i
> said, only the SMP 'framework' is in there, there was more
> complete implementation in earlier 2.1 kernels
[snip]
> it's on my TODO list for 2.3.
If you still have the code lying around somewhere, I'd
appreciate a copy for possible inclusion in the scheduler
bigpatch (basically I'll only leave it out if it's too
complex).
cheers,
Rik -- the flu hits, the flu hits, the flu hits -- MORE
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