linux-kernel - Re: [PATCH] locking: Add WARN_ON

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Message-ID: <20140917160932.GA6613@kroah.com>
Date:	Wed, 17 Sep 2014 09:09:32 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	Peter Hurley <peter@...leysoftware.com>,
	Peter Zijlstra <peterz@...radead.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] locking: Add WARN_ON_ONCE lock assertion

On Wed, Sep 17, 2014 at 02:32:56PM +0200, Ingo Molnar wrote:
> 
> * Greg Kroah-Hartman <gregkh@...uxfoundation.org> wrote:
> 
> > On Tue, Sep 16, 2014 at 10:08:14AM +0200, Ingo Molnar wrote:
> > > 
> > > * Peter Hurley <peter@...leysoftware.com> wrote:
> > > 
> > > > An interface may need to assert a lock invariant and not flood the
> > > > system logs; add a lockdep helper macro equivalent to
> > > > lockdep_assert_held() which only WARNs once.
> > > > 
> > > > cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> > > > Signed-off-by: Peter Hurley <peter@...leysoftware.com>
> > > 
> > > Acked-by: Ingo Molnar <mingo@...nel.org>
> > 
> > Any objection for me taking this through the TTY tree due to 
> > the dependancies on future tty patches that use the function in 
> > this patch?
> 
> Now that the patch is correct I have no objection whatsoever, 
> feel free!

Thanks, will do.

greg k-h
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