From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: vaibhav shinde <v.bhav.shinde@gmail.com>
Cc: trisha yad <trisha1march@gmail.com>,
linux-kernel@vger.kernel.org, Ralf Baechle <ralf@linux-mips.org>
Subject: Re: DEBUG_STACKOVERFLOW issue on ARM
Date: Thu, 11 Oct 2012 09:01:08 +0100 [thread overview]
Message-ID: <20121011080108.GL4625@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <CAB5gotsV-yOU6F2n_-HhVmheMKFX1miyw6yZMogV7+kKe4Jggw@mail.gmail.com>
On Thu, Oct 11, 2012 at 01:09:46PM +0530, vaibhav shinde wrote:
> Hi Russel,
>
> On Fri, Oct 5, 2012 at 2:01 PM, Russell King - ARM Linux
> <linux@arm.linux.org.uk> wrote:
> >
> > On Wed, Oct 03, 2012 at 05:18:56PM +0530, trisha yad wrote:
> > > I wish to know how can I support this function in 3.0 ?
> >
> > If your description is correct, then all you need to do is to ensure
> > that you route interrupts to other CPUs.
> >
> > You can do that by running the userspace irqbalance daemon.
> >
>
> I also tried with the irqbalance daemon, on ARM quad core architecture,
> and as per my understanding, the daemon sets the
> /proc/irq/<irq.no.>/smp_affinity
> file according to the irq frequency on a particular processor.
>
> However, the daemon doesn't work as expected, I also tried
> accessing the
> proc file mentioned above to set the cpu mask for particular irq, but this
> just block the processing of the irq, as I see the count of that irq
> doesnt increase
> in /proc/interrupts.
>
> My conclusion is that the irqbalancing is not supported on
> ARM arch or there is
> something more required for this to work. Kindly provide some
> pointers over this.
Sounds like something has been broken, no idea what. It needs investigation.
prev parent reply other threads:[~2012-10-11 8:01 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-03 11:48 DEBUG_STACKOVERFLOW issue on ARM trisha yad
2012-10-05 8:31 ` Russell King - ARM Linux
2012-10-11 7:39 ` vaibhav shinde
2012-10-11 8:01 ` Russell King - ARM Linux [this message]
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