linux-kernel - Re: [PATCH 1/2] irq_flags_t: intro and core annotations

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Message-Id: <200710241055.42567.arnd@arndb.de>
Date:	Wed, 24 Oct 2007 10:55:41 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	Herbert Xu <herbert@...dor.apana.org.au>,
	akpm@...ux-foundation.org, torvalds@...ux-foundation.org,
	matthew@....cx, ralf@...ux-mips.org, adobriyan@...il.com,
	viro@....linux.org.uk, viro@...iv.linux.org.uk,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: [PATCH 1/2] irq_flags_t: intro and core annotations

On Wednesday 24 October 2007, Jeff Garzik wrote:
> > 
> > Could we add a debug option that warned if spin_lock_irq is
> > executed with IRQs turned off already?
> 
> Seems reasonable but perhaps arch-specific?
> 
> Also, I think someone (akpm?) mentioned an effort had been made before, 
> and run into some problems.  I don't have details...

I already posted a patch in this thread that does exactly that (and
warn about spin_unlock_irq with IRQs enabled), see my earlier reply.
The patch works fine, but my feeling is that it belongs into lockdep
instead.

	Arnd <><
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