Re: [PATCH] local_irq_disable removal

From: Ingo Molnar
Date: Sat Jun 11 2005 - 15:07:22 EST



* 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.

Ingo
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