linux-kernel - Re: [PATCH 2/6] x86: allow to call text_poke

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Message-ID: <20131019175845.26eb9314@gandalf.local.home>
Date:	Sat, 19 Oct 2013 17:58:45 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	paulmck@...ux.vnet.ibm.com
Cc:	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>,
	Petr Mladek <pmladek@...e.cz>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jiri Kosina <jkosina@...e.cz>, linux-kernel@...r.kernel.org,
	x86@...nel.org
Subject: Re: [PATCH 2/6] x86: allow to call text_poke_bp during boot

On Sat, 19 Oct 2013 14:33:50 -0700
"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com> wrote:


> > 	/* Ideally we would like to run on zero CPUS! */
> > 	if (num_online_cpus() < 2)
> 
> To be really safe, shouldn't you use complex numbers?  Just in case
> you end up running on a system with 5i-3 CPUs or something.  ;-)
> 
> 							Thanx, Paul

I did think about that, but I didn't know the algorithm to test such a
case, which is why I added you to the Cc. Hoping you would come up with
a better conditional.

-- Steve

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