Re: [PATCH] cpumask: introduce new API, without changing anything
From: Ingo Molnar
Date: Fri Nov 07 2008 - 03:58:29 EST
* Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote:
> > +#if NR_CPUS == 1
> > +/* Uniprocesor. */
btw: s/Uniprocesor/Uniprocessor
> > +#define cpumask_first(src) ({ (void)(src); 0; })
> >
> > ...
> >
> > +#else
> > +static inline unsigned int cpumask_first(const struct cpumask *srcp)
> > +{
> > + return find_first_bit(cpumask_bits(srcp), nr_cpumask_bits);
> > +}
> >
> > ...
> >
> > +#endif /* SMP */
>
> So I can happily compile and run
>
> cpumask_first("hello, world");
>
> with CONFIG_SMP=n?
yeah, you are right that the use of a macro sucks there, it should be
an inline function.
We should stop using CPP, which is the outdated tech of the sixties.
We should go with the new wave of the seventies and use this shiny new
"C" language that's all the rage with features like type checking and
stuff.
Ingo
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