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SubjectRe: [-mm patch] {rd,wr}msr_on_cpu SMP=n optimization
On Mon, Feb 19, 2007 at 07:14:34PM -0500, Dave Jones wrote:
> On Tue, Feb 20, 2007 at 01:07:13AM +0100, Adrian Bunk wrote:
>...
> > +#ifdef CONFIG_SMP
> > void rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h);
> > void wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h);
> > +#else /* CONFIG_SMP */
> > +static inline void rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h)
> > +{
> > + rdmsr(msr_no, *l, *h);
> > +}
> > +static inline void wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h)
> > +{
> > + wrmsr(msr_no, l, h);
> > +}
> > +#endif /* CONFIG_SMP */
>
> BUG_ON(cpu!=smp_processor_id()) maybe?

This is the CONFIG_SMP=n case.

> Dave

cu
Adrian

--

"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed

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