> > > Sent: Friday, October 12, 2012 11:25 PM
> > > > To: Liu, Chuansheng
> > > > Cc: Thomas Gleixner; linux-kernel@vger.kernel.org
> > > > Subject: RE: [PATCH] genirq: for edge interrupt IRQS_ONESHOT support
> > > > with irq
> > >
u, Chuansheng
> > > Cc: Thomas Gleixner; linux-kernel@vger.kernel.org
> > > Subject: RE: [PATCH] genirq: for edge interrupt IRQS_ONESHOT support with
> > > irq
> > > thread
> > >
> > > On Fri, 2012-10-12 at 14:57 +, Liu, Chuansheng wrote:
>
On Fri, 12 Oct 2012, Liu, Chuansheng wrote:
> > > But IRQS_ONESHOT does not work well for edge interrupt.
> > > And pasting the IRQS_ONESHOT description:
> > > * IRQS_ONESHOT- irq is not unmasked in primary handler
> >
> > Right, and edge type interrupts doe not support it.
>
>
On Fri, 12 Oct 2012, Liu, Chuansheng wrote:
> > On SMP an interrupt which is raised after the ack() again before the
> > handler finishes, can invoke another delivery on a different CPU,
> > which then sees the IRQ_INPROGESS flag, masks it and flags it
> > PENDING. When the primary handler on the
ubject: RE: [PATCH] genirq: for edge interrupt IRQS_ONESHOT support with
> > irq
> > thread
> >
> > On Fri, 2012-10-12 at 14:57 +, Liu, Chuansheng wrote:
> > > > On SMP an interrupt which is raised after the ack() again before the
> > > > handl
ernel.org
> > Subject: RE: [PATCH] genirq: for edge interrupt IRQS_ONESHOT support with
> > irq
> > thread
> >
> > On Fri, 2012-10-12 at 14:57 +, Liu, Chuansheng wrote:
> > > > On SMP an interrupt which is raised after the ack() again before t
> -Original Message-
> From: anish kumar [mailto:anish198519851...@gmail.com]
> Sent: Friday, October 12, 2012 11:25 PM
> To: Liu, Chuansheng
> Cc: Thomas Gleixner; linux-kernel@vger.kernel.org
> Subject: RE: [PATCH] genirq: for edge interrupt IRQS_ONESHOT support
On Fri, 2012-10-12 at 14:57 +, Liu, Chuansheng wrote:
> > On SMP an interrupt which is raised after the ack() again before the
> > handler finishes, can invoke another delivery on a different CPU,
> > which then sees the IRQ_INPROGESS flag, masks it and flags it
> > PENDING. When the primary ha
> On SMP an interrupt which is raised after the ack() again before the
> handler finishes, can invoke another delivery on a different CPU,
> which then sees the IRQ_INPROGESS flag, masks it and flags it
> PENDING. When the primary handler on the first CPU returns, it sees
> the PENDING flag, unmask
> To: Liu, Chuansheng
> Cc: linux-kernel@vger.kernel.org
> Subject: RE: [PATCH] genirq: for edge interrupt IRQS_ONESHOT support with irq
> thread
>
> On Fri, 12 Oct 2012, Liu, Chuansheng wrote:
> > > -Original Message-
> > > From: Thomas Gleixner [mailto:t.
y, October 12, 2012 8:32 PM
> > > > To: Liu, Chuansheng
> > > > Cc: linux-kernel@vger.kernel.org
> > > > Subject: Re: [PATCH] genirq: for edge interrupt IRQS_ONESHOT support
> > with irq
> > > > thread
> > > >
> > > > On Fri
FLAG IRQS_ONESHOT does not work well for edge interrupt.
* IRQS_ONESHOT - irq is not unmasked in primary handler
Is it possible give some notification or remind? Thanks. I took some time
to know it:)
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> -Original Message-
> From: Thomas Gleixner [mailto:t...@linutronix.de]
> Sent: Friday, October 12, 2012 8:46 PM
> To: Liu, Chuansheng
> Cc: linux-kernel@vger.kernel.org
> Subject: RE: [PATCH] genirq: for edge interrupt IRQS_ONESHOT support with irq
> thread
>
On Fri, 12 Oct 2012, Liu, Chuansheng wrote:
> > -Original Message-
> > From: Thomas Gleixner [mailto:t...@linutronix.de]
> > Sent: Friday, October 12, 2012 8:32 PM
> > To: Liu, Chuansheng
> > Cc: linux-kernel@vger.kernel.org
> > Subject: Re: [PATCH] gen
> -Original Message-
> From: Thomas Gleixner [mailto:t...@linutronix.de]
> Sent: Friday, October 12, 2012 8:32 PM
> To: Liu, Chuansheng
> Cc: linux-kernel@vger.kernel.org
> Subject: Re: [PATCH] genirq: for edge interrupt IRQS_ONESHOT support with irq
> thread
>
On Fri, 12 Oct 2012, Chuansheng Liu wrote:
>
> In our system, there is one edge interrupt, and we want it to be
> irq thread with IRQS_ONESHOT, and found in handle_edge_irq(),
> even with IRQS_ONESHOT, the irq is still unmasked without care of
> flag IRQS_ONESHOT.
>
> It causes IRQS_ONESHOT can n
In our system, there is one edge interrupt, and we want it to be
irq thread with IRQS_ONESHOT, and found in handle_edge_irq(),
even with IRQS_ONESHOT, the irq is still unmasked without care of
flag IRQS_ONESHOT.
It causes IRQS_ONESHOT can not work well for edge interrupt, but also
after the irq t
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