Re: [PATCH 1/5] user_hooks: New user hooks subsystem

From: Ingo Molnar
Date: Tue Jul 31 2012 - 03:06:40 EST



* Frederic Weisbecker <fweisbec@xxxxxxxxx> 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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