linux-kernel - Re: [PATCH] jump label: introduce static

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Message-ID: <1298468706.7666.78.camel@gandalf.stny.rr.com>
Date:	Wed, 23 Feb 2011 08:45:06 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Jason Baron <jbaron@...hat.com>, hpa@...or.com,
	mathieu.desnoyers@...ymtl.ca, mingo@...e.hu, tglx@...utronix.de,
	andi@...stfloor.org, roland@...hat.com, rth@...hat.com,
	masami.hiramatsu.pt@...achi.com, fweisbec@...il.com,
	avi@...hat.com, davem@...emloft.net, sam@...nborg.org,
	ddaney@...iumnetworks.com, michael@...erman.id.au,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] jump label: introduce static_branch() interface

On Wed, 2011-02-23 at 11:11 +0100, Peter Zijlstra wrote:
> On Tue, 2011-02-22 at 17:28 -0500, Jason Baron wrote:
> > @@ -33,7 +28,11 @@ struct _ddebug {
> >  #define _DPRINTK_FLAGS_PRINT   (1<<0)  /* printk() a message using
> > the format */
> >  #define _DPRINTK_FLAGS_DEFAULT 0
> >         unsigned int flags:8;
> > -       char enabled;
> > +#ifdef HAVE_JUMP_LABEL
> > +       struct jump_label_key enabled;
> > +#else
> > +       int enabled;
> > +#endif
> >  } __attribute__((aligned(8)));
> >   
> 
> Also, didn't you promise Mathieu a comment explaining why dynamic debug
> does funny things like this? :-) I mean we all know its because of the
> cyclic header stuff involving atomic etc.. but I'm also quite sure we'll
> all have forgotten about that in a few weeks time.

Case in point.... I already forgot about that ;-)

-- Steve


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