Re: Add prefetch switch stack hook in scheduler function

From: david mosberger <dmosberger_at_gmail.com>
Date: 2005-07-28 09:23:37
Also, should this be called prefetch_stack() or perhaps even just
prefetch_task()?  Not every architecture defines a switch_stack
structure.

  --david

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On 7/27/05, Andrew Morton <akpm@osdl.org> wrote:
> "Chen, Kenneth W" <kenneth.w.chen@intel.com> 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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Received on Wed Jul 27 19:28:21 2005

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