Re: Add prefetch switch stack hook in scheduler function

[Andrew Morton]

"Chen, Kenneth W" <kenneth.w.chen@xxxxxxxxx> wrote:
>
> +#ifdef ARCH_HAS_PREFETCH_SWITCH_STACK
>  +extern void prefetch_switch_stack(struct task_struct*);
>  +#else
>  +#define prefetch_switch_stack(task)	do { } while (0)
>  +#endif

It is better to use

static inline void prefetch_switch_stack(struct task_struct *t) { }

in the second case, rather than a macro.  It provides typechecking.
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