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Message-ID: <20120731070640.GA2950@gmail.com>
Date:	Tue, 31 Jul 2012 09:06:40 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Alessio Igor Bogani <abogani@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Avi Kivity <avi@...hat.com>,
	Chris Metcalf <cmetcalf@...era.com>,
	Christoph Lameter <cl@...ux.com>,
	Geoff Levand <geoff@...radead.org>,
	Gilad Ben Yossef <gilad@...yossef.com>,
	Hakan Akkan <hakanakkan@...il.com>,
	"H. Peter Anvin" <hpa@...or.com>, Kevin Hilman <khilman@...com>,
	Max Krasnyansky <maxk@...lcomm.com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Stephen Hemminger <shemminger@...tta.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Sven-Thorsten Dietrich <thebigcorporation@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 1/5] user_hooks: New user hooks subsystem


* Frederic Weisbecker <fweisbec@...il.com> wrote:

> On Mon, Jul 30, 2012 at 05:08:12PM +0200, Peter Zijlstra wrote:
> > On Fri, 2012-07-27 at 17:40 +0200, Frederic Weisbecker wrote:
> > > +++ b/kernel/user_hooks.c
> > > @@ -0,0 +1,56 @@
> > > +#include <linux/user_hooks.h>
> > > +#include <linux/rcupdate.h>
> > > +#include <linux/sched.h>
> > > +#include <linux/percpu.h>
> > > +
> > > +struct user_hooks {
> > > +       bool hooking;
> > > +       bool in_user;
> > > +};
> > 
> > I really detest using bool in structures.. but that's just me. Also this
> > really wants a comment as to wtf 'hooking' means. in_user I can just
> > about guess.
> 
> I really don't mind changing that to int. I just like them as 
> bool because they better describe the purpose of the field.
> 
> hooking means that the hooks are set (the TIF flag is set on 
> the current task and we also handle the exception hooks).
> 
> I can call that is_hooking instead? And/or add a comment to 
> explain the purpose of this.

Please don't use this horrible naming - use something more 
technical like struct user_callback and callback::active, ok?

Thanks,

	Ingo
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