On Thu, Jan 31, 2008 at 05:12:35PM +0100, Thomas Gleixner wrote:
quoted text
> On Tue, 29 Jan 2008, Andi Kleen wrote:
> > +int direct_gbpages;
> > +
> > +static int __init parse_direct_gbpages(char *arg)
> > +{
> > +	if (!strcmp(arg, "off")) {
> > +		direct_gbpages = -1;
> > +		return 0;
> > +	}
> > +	return -1;
> > +}
> > +early_param("direct_gbpages", parse_direct_gbpages);
> 
> Can we please use simple boolean logic ? This 0, -1, 1 magic is more
> than confusing.

I did it this way to later allow forcing gbpages. This actually
makes sense together with debug pagealloc which right now forces
them to be off.

The only bit missing for that is a check for direct_gbpages=on

-Andi

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