Re: 2.6.17-rc3 -- SMP alternatives: switching to UP code

[Gerd Hoffmann]

Rene Herman wrote:
> Hi list.
> 
> I just noticed this in the 2.6.17-rc3 dmesg:
> 
> ===
> Checking 'hlt' instruction... OK.
> SMP alternatives: switching to UP code
> Freeing SMP alternatives: 0k freed
> ACPI: setting ELCR to 0400 (from 1608)
> ===
> 
> Should I be seeing this "SMP alternatives" thing on a !CONFIG_SMP
> kernel? It does say 0k, but something is apparently being done at
> runtime still. Why?

The UP kernel has empty alternatives tables (as you've noticed), thus
the code doesn't do anything.  Nevertheless it probably makes sense to
add a few #ifdef CONFIG_SMP lines to avoid confusing people and safe a
few bytes ...

cheers,

  Gerd

-- 
Gerd Hoffmann <kraxel@xxxxxxx>
Erst mal heiraten, ein, zwei Kinder, und wenn alles läuft
geh' ich nach drei Jahren mit der Familie an die Börse.
http://www.suse.de/~kraxel/julika-dora.jpeg
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