linux-kernel - Re: [PATCH 1/3] genirq: Get rid of unneeded force parameter in irq_finalize

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Date:	Thu, 22 Mar 2012 15:15:40 +0100 (CET)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Alexander Gordeev <agordeev@...hat.com>
cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] genirq: Get rid of unneeded force parameter in
 irq_finalize_oneshot()

On Thu, 22 Mar 2012, Alexander Gordeev wrote:

> On Thu, Mar 22, 2012 at 11:32:26AM +0100, Thomas Gleixner wrote:
> > Wrong.
> > 
> > CPU 0				CPU 1
> > 
> >     do_exit()
> > 				check(PF_EXITING)
> > 				set_bit(IRQTF_RUNTHREAD)
> > 				...
> >     set(PF_EXITING)
> >     exit_irq_thread()
> 
> Thomas,
> 
> Did not you pick this code with 7140ea1 commit?
> 
> @@ -845,6 +842,13 @@ void exit_irq_thread(void)
>  
>  	desc = irq_to_desc(action->irq);
>  
> +	/*
> +	 * If IRQTF_RUNTHREAD is set, we need to decrement
> +	 * desc->threads_active and wake possible waiters.
> +	 */
> +	if (test_and_clear_bit(IRQTF_RUNTHREAD, &action->thread_flags))
> +		wake_threads_waitq(desc);
> +

Gah crap. Was looking on the wrong branch. That's what you get for
looking at patches before coffee hit brain.

Thanks,

	tglx
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