Hi Milton,
sorry for the delayed answer, was on vacation.
linux-kernel-ow...@vger.kernel.org wrote on 21.05.2010 11:18:01:
> linux-kernel-ow...@vger.kernel.org
>
> On Thu, 20 May 2010 at 10:21:36 +0200 (CEST) Thomas Gleixner wrote:
> > On Thu, 20 May 2010, Michael Ellerman wrote:
> > > On Wed, 2
On Thu May 20 at 11:28:36 EST in 2010, Michael Ellerman wrote:
> On Wed, 2010-05-19 at 07:16 -0700, Darren Hart wrote:
> > On 05/18/2010 06:25 PM, Michael Ellerman wrote:
> > > On Tue, 2010-05-18 at 15:22 -0700, Darren Hart wrote:
> > > > On 05/18/2010 02:52 PM, Brian King wrote:
> > > > > Is IRQF_
On Thu, 20 May 2010 at 10:21:36 +0200 (CEST) Thomas Gleixner wrote:
> On Thu, 20 May 2010, Michael Ellerman wrote:
> > On Wed, 2010-05-19 at 16:38 +0200, Thomas Gleixner wrote:
> > > On Wed, 19 May 2010, Darren Hart wrote:
> > >
> > > > On 05/18/2010 06:25 PM, Michael Ellerman wrote:
> > > > > On
On Thu, 2010-05-20 at 16:45 +0200, Thomas Gleixner wrote:
> On Thu, 20 May 2010, Darren Hart wrote:
>
> > On 05/20/2010 01:14 AM, Thomas Gleixner wrote:
> > > On Thu, 20 May 2010, Jan-Bernd Themann wrote:
> > > > > > Thought more about that. The case at hand (ehea) is nasty:
> > > > > >
> > > > >
On Thu, 2010-05-20 at 11:05 +0200, Jan-Bernd Themann wrote:
> Hi Thomas
>
> > Re: [PATCH RT] ehea: make receive irq handler non-threaded (IRQF_NODELAY)
> >
> > On Thu, 20 May 2010, Jan-Bernd Themann wrote:
> > > > > Thought more about
On Thu, 20 May 2010, Darren Hart wrote:
> On 05/20/2010 01:14 AM, Thomas Gleixner wrote:
> > On Thu, 20 May 2010, Jan-Bernd Themann wrote:
> > > > > Thought more about that. The case at hand (ehea) is nasty:
> > > > >
> > > > > The driver does _NOT_ disable the rx interrupt in the card in the rx
On 05/20/2010 01:14 AM, Thomas Gleixner wrote:
On Thu, 20 May 2010, Jan-Bernd Themann wrote:
Thought more about that. The case at hand (ehea) is nasty:
The driver does _NOT_ disable the rx interrupt in the card in the rx
interrupt handler - for whatever reason.
Yeah I saw that, but I don't kn
Thomas Gleixner wrote:
Pleaes check if multiple queues are enabled. The following module parameter
is used for that:
MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 0
");
you should also see the number of used HEA interrupts in /proc/interrupts
I leave that for Will
Jan-Bernd,
On Thu, 20 May 2010, Jan-Bernd Themann wrote:
>
> Hi Thomas
>
> > Re: [PATCH RT] ehea: make receive irq handler non-threaded (IRQF_NODELAY)
> >
> > On Thu, 20 May 2010, Jan-Bernd Themann wrote:
> > > > > Thought more ab
Hi Thomas
> Re: [PATCH RT] ehea: make receive irq handler non-threaded (IRQF_NODELAY)
>
> On Thu, 20 May 2010, Jan-Bernd Themann wrote:
> > > > Thought more about that. The case at hand (ehea) is nasty:
> > > >
> > > > The driver does _NOT_ d
On Thu, 20 May 2010, Michael Ellerman wrote:
> On Wed, 2010-05-19 at 16:38 +0200, Thomas Gleixner wrote:
> > On Wed, 19 May 2010, Darren Hart wrote:
> >
> > > On 05/18/2010 06:25 PM, Michael Ellerman wrote:
> > > > On Tue, 2010-05-18 at 15:22 -0700, Darren Hart wrote:
>
> > > > The result of the
On Thu, 20 May 2010, Jan-Bernd Themann wrote:
> > > Thought more about that. The case at hand (ehea) is nasty:
> > >
> > > The driver does _NOT_ disable the rx interrupt in the card in the rx
> > > interrupt handler - for whatever reason.
> >
> > Yeah I saw that, but I don't know why it's written t
Hi,
Michael Ellerman wrote on 20.05.2010 03:34:08:
> Subject:
>
> Re: [PATCH RT] ehea: make receive irq handler non-threaded (IRQF_NODELAY)
>
> On Wed, 2010-05-19 at 23:08 +0200, Thomas Gleixner wrote:
> > On Wed, 19 May 2010, Thomas Gleixner wrote:
> > > &g
On Wed, 2010-05-19 at 23:08 +0200, Thomas Gleixner wrote:
> On Wed, 19 May 2010, Thomas Gleixner wrote:
> > > I'm still not clear on why the ultimate solution wasn't to have XICS
> > > report
> > > edge triggered as edge triggered. Probably some complexity of the entire
> > > power
> > > stack th
On Wed, 2010-05-19 at 16:38 +0200, Thomas Gleixner wrote:
> On Wed, 19 May 2010, Darren Hart wrote:
>
> > On 05/18/2010 06:25 PM, Michael Ellerman wrote:
> > > On Tue, 2010-05-18 at 15:22 -0700, Darren Hart wrote:
> > > > On 05/18/2010 02:52 PM, Brian King wrote:
> > > > > Is IRQF_NODELAY somethin
On Wed, 2010-05-19 at 07:16 -0700, Darren Hart wrote:
> On 05/18/2010 06:25 PM, Michael Ellerman wrote:
> > On Tue, 2010-05-18 at 15:22 -0700, Darren Hart wrote:
> >> On 05/18/2010 02:52 PM, Brian King wrote:
> >>> Is IRQF_NODELAY something specific to the RT kernel? I don't see it in
> >>> mainli
On Wed, 19 May 2010, Thomas Gleixner wrote:
> > I'm still not clear on why the ultimate solution wasn't to have XICS report
> > edge triggered as edge triggered. Probably some complexity of the entire
> > power
> > stack that I am ignorant of.
> >
> > > Apart from the issue of loosing interrupts
On Wed, 19 May 2010, Darren Hart wrote:
> On 05/18/2010 06:25 PM, Michael Ellerman wrote:
> > On Tue, 2010-05-18 at 15:22 -0700, Darren Hart wrote:
> > > On 05/18/2010 02:52 PM, Brian King wrote:
> > > > Is IRQF_NODELAY something specific to the RT kernel? I don't see it in
> > > > mainline...
> >
On 05/18/2010 06:25 PM, Michael Ellerman wrote:
On Tue, 2010-05-18 at 15:22 -0700, Darren Hart wrote:
On 05/18/2010 02:52 PM, Brian King wrote:
Is IRQF_NODELAY something specific to the RT kernel? I don't see it in
mainline...
Yes, it basically says "don't make this handler threaded".
That
On Tue, 2010-05-18 at 15:22 -0700, Darren Hart wrote:
> On 05/18/2010 02:52 PM, Brian King wrote:
> > Is IRQF_NODELAY something specific to the RT kernel? I don't see it in
> > mainline...
>
> Yes, it basically says "don't make this handler threaded".
That is a good fix for EHEA, but the threade
m.com wrote:
> From ad81664794e33d785f533c5edee37aaba20dd92d Mon Sep 17 00:00:00 2001
From: Darren Hart
Date: Tue, 18 May 2010 11:07:13 -0700
Subject: [PATCH RT] ehea: make receive irq handler non-threaded (IRQF_NODELAY)
The underlying hardware is edge triggered but presented by XICS as level
triggered. The edge t
Brian King wrote:
Is IRQF_NODELAY something specific to the RT kernel? I don't see it in
mainline...
Yep, this is RT only.
thanks,
Nivedita
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3 -0700
> Subject: [PATCH RT] ehea: make receive irq handler non-threaded (IRQF_NODELAY)
>
> The underlying hardware is edge triggered but presented by XICS as level
> triggered. The edge triggered interrupts are not reissued after masking. This
> is not a problem in mainline which does
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