linux-kernel - Re: [RFC][PATCH 3/7] lockdep: Annotate read/write states

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Message-ID: <1303144459.7181.42.camel@gandalf.stny.rr.com>
Date:	Mon, 18 Apr 2011 12:34:19 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Yong Zhang <yong.zhang0@...il.com>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...e.hu>,
	LKML <linux-kernel@...r.kernel.org>,
	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [RFC][PATCH 3/7] lockdep: Annotate read/write states

On Mon, 2011-04-18 at 21:34 +0800, Yong Zhang wrote:

> > Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
> > ---
> >  include/linux/lockdep.h |  107 ++++++++++++++++++++++++++++++++++++------------
> >  kernel/lockdep.c        |   46 ++++++++++----------
> >  2 files changed, 105 insertions(+), 48 deletions(-)
> > 
> > @@ -2273,7 +2273,7 @@ mark_held_locks(struct task_struct *curr
> >  		hlock = curr->held_locks + i;
> >  
> >  		usage_bit = 2 + (mark << 2); /* ENABLED */
> > -		if (hlock->read)
> > +		if (hlock->rw_state)
> 
> 		is_read(hlock->rw_state) ?

Yeah, I think this should be a is_read() or add a comment explaining why
not.

-- Steve


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