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From: David Brownell <david-b@pacbell.net>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: dbrownell@users.sourceforge.net,
	Thomas Gleixner <tglx@linutronix.de>,
	Andrew Morton <akpm@linux-foundation.org>,
	me@felipebalbi.com, linux-kernel@vger.kernel.org,
	linux-input@vger.kernel.org, felipe.balbi@nokia.com,
	dmitry.torokhov@gmail.com, sameo@openedhand.com
Subject: Re: lockdep and threaded IRQs (was: ...)
Date: Mon, 2 Mar 2009 14:40:58 -0800	[thread overview]
Message-ID: <200903021440.58712.david-b@pacbell.net> (raw)
In-Reply-To: <1236032371.5330.1654.camel@laptop>

On Monday 02 March 2009, Peter Zijlstra wrote:
> I state that every !IRQF_DISABLED usage is a bug, either
> due to broken hardware or broken drivers.

That's a novel position.  You do realize that removing that
capability breaks drivers?

But if that's what is keeping you from fixing the lockdep bug,
why haven't you submitted patches to remove IRQF_DISABLED from
the kernel, and update all the drivers relying on IRQs being
enabled when their handlers run?

At least that would get the appropriate level of discussion.

- Dave



  reply	other threads:[~2009-03-02 22:41 UTC|newest]

Thread overview: 106+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-02-27 19:28 [PATCH 1/2] input: misc: add twl4030-pwrbutton driver Felipe Balbi
2009-02-27 19:28 ` [PATCH 2/2] mfd: twl4030: add twl4030-pwrbutton as our child Felipe Balbi
2009-02-27 20:36   ` Andrew Morton
2009-02-27 21:58     ` David Brownell
2009-02-27 22:09       ` Felipe Balbi
2009-02-27 22:12       ` Andrew Morton
2009-02-27 23:20         ` David Brownell
2009-02-27 23:42           ` Andrew Morton
2009-07-22 19:27             ` Trilok Soni
2009-07-22 22:25               ` David Brownell
2009-02-27 20:33 ` [PATCH 1/2] input: misc: add twl4030-pwrbutton driver Andrew Morton
2009-02-27 20:37   ` Felipe Balbi
2009-02-27 21:50     ` lockdep and threaded IRQs (was: [PATCH 1/2] input: misc: add twl4030-pwrbutton driver) David Brownell
2009-02-27 22:09       ` Andrew Morton
2009-02-27 23:18         ` lockdep and threaded IRQs (was: ...) David Brownell
2009-02-27 23:32           ` Andrew Morton
2009-02-28  0:01             ` Andrew Morton
2009-02-28  2:30               ` David Brownell
2009-02-28  2:39                 ` Andrew Morton
2009-02-28  4:46                   ` David Brownell
2009-02-28  5:12                     ` Andrew Morton
2009-02-28  6:17                       ` David Brownell
2009-02-28 11:13                     ` Thomas Gleixner
2009-02-28 12:16                       ` David Brownell
2009-02-28 16:42                         ` Thomas Gleixner
2009-02-28 20:02                           ` David Brownell
2009-02-28 20:55                             ` Thomas Gleixner
2009-02-28 21:13                               ` Thomas Gleixner
2009-02-28 22:37                                 ` David Brownell
2009-02-28 22:05                               ` David Brownell
2009-03-01  9:43                                 ` Thomas Gleixner
2009-03-01 22:54                                   ` David Brownell
2009-03-02 13:16                                     ` Peter Zijlstra
2009-03-02 21:04                                       ` David Brownell
2009-03-02 21:16                                         ` Peter Zijlstra
2009-03-02 21:29                                           ` Andrew Morton
2009-03-02 21:37                                           ` David Brownell
2009-03-02 21:41                                             ` Peter Zijlstra
2009-03-02 22:09                                               ` David Brownell
2009-03-02 22:19                                                 ` Peter Zijlstra
2009-03-02 22:40                                                   ` David Brownell [this message]
2009-03-02 22:51                                                     ` Peter Zijlstra
2009-03-02 23:29                                                       ` David Brownell
2009-03-03  7:45                                                         ` Peter Zijlstra
2009-03-02 22:46                                                   ` lockdep and threaded IRQs David Miller
2009-03-02 22:57                                                     ` Andrew Morton
2009-03-02 23:07                                                       ` Peter Zijlstra
2009-03-02 23:02                                                     ` Peter Zijlstra
2009-03-02 23:35                                           ` lockdep and threaded IRQs (was: ...) Alan Cox
2009-03-01 22:11                               ` David Brownell
2009-02-28 11:48                     ` lockdep and threaded IRQs Stefan Richter
2009-02-28 20:19                       ` David Brownell
2009-02-28 21:10                         ` Stefan Richter
2009-03-02 13:16           ` lockdep and threaded IRQs (was: ...) Peter Zijlstra
2009-03-02 22:10             ` David Brownell
2009-03-02 22:25               ` Peter Zijlstra
2009-03-02 23:20                 ` David Brownell
2009-03-02 23:26                   ` Ingo Molnar
2009-03-02 23:42                     ` David Brownell
2009-03-02 23:53                       ` Ingo Molnar
2009-03-03  0:33                         ` David Brownell
2009-03-03  0:44                           ` Ingo Molnar
2009-03-03  2:37                             ` David Brownell
2009-03-03  9:27                               ` Peter Zijlstra
2009-03-03  9:45                                 ` Ingo Molnar
2009-03-03  9:47                                 ` Alan Cox
2009-03-03 10:03                                   ` Ingo Molnar
2009-03-03 10:30                                     ` Alan Cox
2009-03-03 10:39                                       ` Peter Zijlstra
2009-03-03 10:48                                       ` Ingo Molnar
2009-03-03 11:13                                         ` Alan Cox
2009-03-03 11:33                                           ` Ingo Molnar
2009-03-03 11:19                                         ` Ingo Molnar
2009-03-18  1:04                                         ` David Brownell
2009-03-18  2:00                             ` David Brownell
2009-03-18  2:14                             ` [patch/rfc 0/2] handle_threaded_irq() David Brownell
2009-03-18  2:19                               ` [patch/rfc 1/2] GENIRQ: add handle_threaded_irq() flow handler David Brownell
2009-03-18 12:00                                 ` Felipe Balbi
2009-03-18 18:31                                   ` David Brownell
2009-03-18 18:32                                     ` Felipe Balbi
2009-03-18  2:22                               ` [patch/rfc 2/2] twl4030: use new " David Brownell
2009-03-03 11:53                       ` lockdep and threaded IRQs (was: ...) Thomas Gleixner
2009-03-05  2:49                         ` David Brownell
2009-03-06 14:40                           ` Thomas Gleixner
2009-03-18  3:06                             ` David Brownell
2009-03-02 23:48                     ` David Brownell
2009-03-02 23:58                       ` Ingo Molnar
2009-03-02 15:13           ` [PATCH] genirq: assert that irq handlers are indeed run in hardirq context Peter Zijlstra
2009-03-02 19:48             ` David Brownell
2009-03-02 22:01             ` [tip:irq/genirq] genirq: assert that irq handlers are indeed running " Peter Zijlstra
2009-03-02 23:15             ` Peter Zijlstra
2009-04-10  7:11               ` Eric Miao
2009-04-10  9:57                 ` Thomas Gleixner
2009-02-28 11:20       ` lockdep and threaded IRQs Stefan Richter
2009-02-28 20:10         ` David Brownell
2009-02-28  5:51 ` [PATCH 1/2] input: misc: add twl4030-pwrbutton driver Trilok Soni
2009-02-28 12:05   ` [PATCH] mfd: twl4030: add twl4030-pwrbutton as our child Felipe Balbi
2009-02-28 22:23 ` [PATCH 1/2] input: misc: add twl4030-pwrbutton driver Dmitry Torokhov
2009-03-01  0:30   ` Felipe Balbi
2009-03-01  0:58     ` Dmitry Torokhov
2009-03-01 14:40       ` Felipe Balbi
2009-03-04  9:00         ` Dmitry Torokhov
2009-03-04 10:12           ` Felipe Balbi
2009-03-05  1:38             ` David Brownell
2009-03-05 23:54           ` David Brownell
2009-03-06  9:43             ` Dmitry Torokhov

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