linux-kernel - Re: Dynamic nop selection breaks boot on Geode LX

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Date:	Mon, 04 Oct 2010 18:11:00 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Jason Baron <jbaron@...hat.com>
Cc:	Daniel Drake <dsd@...top.org>,
	Andres Salomon <dilinger@...ued.net>,
	Chris Ball <cjb@...top.org>, linux-kernel@...r.kernel.org,
	mingo@...e.hu
Subject: Re: Dynamic nop selection breaks boot on Geode LX

On Mon, 2010-10-04 at 16:39 -0400, Jason Baron wrote:
> On Mon, Oct 04, 2010 at 04:31:12PM -0400, Steven Rostedt wrote:
> > On Mon, 2010-10-04 at 11:46 -0400, Jason Baron wrote:
> > 
> > >  	restart_nmi();
> > > +
> > > +	local_irq_save(flags);
> > > +	arch_init_ideal_nop5();
> > > +	local_irq_restore(flags);
> > >  }
> > >  
> > >  /**
> > 
> > BTW, why the irq disabling around the call?
> > 
> > -- Steve
> > 
> > 
> 
> Only b/c the selection of the nop was originally done by
> 'ftrace_dyn_arch_init()' which had irq's disabled around it. So maybe
> that can be dropped now?

Yeah, that disable is there for legacy reasons. It can be scrapped.

I'll remove it.

Thanks!

-- Steve


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