Messages in this thread | | | Subject | Re: [patch] SMP alternatives: skip with UP kernels. | From | Andi Kleen <> | Date | 11 May 2006 20:28:09 +0200 |
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Mikael Pettersson <mikpe@it.uu.se> writes:
> On Thu, 11 May 2006 14:13:22 +0200, Gerd Hoffmann wrote: > >+ if (0 == (__smp_alt_end - __smp_alt_begin)) > >+ return; /* no tables, nothing to patch (UP kernel) */ > > That's an unnecessarily obscure way of stating the obvious: > > if (__smp_alt_end == __smp_alt_begin)
iirc ISO-C guarantees that symbols have different values and the optimizer could possibly make use of that fact. So you might actually need some RELOC_HIDE()s to make this safe.
-Andi
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