Re: [PATCH] local_irq_disable removal

[Sven-Thorsten Dietrich]

On Sat, 2005-06-11 at 22:03 +0200, Ingo Molnar wrote:
> * Esben Nielsen <simlo@xxxxxxxxxx> wrote:
> 
> > > the jury is still out on the accuracy of those numbers. The test had 
> > > RT_DEADLOCK_DETECT (and other -RT debugging features) turned on, which 
> > > mostly work with interrupts disabled. The other question is how were 
> > > interrupt response times measured.
> > > 
> > You would accept a patch where I made this stuff optional?
> 
> I'm not sure why. The soft-flag based local_irq_disable() should in fact 
> be a tiny bit faster than the cli based approach, on a fair number of 
> CPUs. But it should definitely not be slower in any measurable way.
> 

Is there any such SMP concept as a local_preempt_disable()  ?



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