On 11/01/2017 01:47 AM, Thomas Gleixner wrote:
> On Mon, 30 Oct 2017, Shivasharan Srikanteshwara wrote:
>
>> In managed-interrupts case, interrupts which were affine to the offlined
>> CPU is not getting migrated to another available CPU. But the
>> documentation at below link says that "all inter
On Mon, 30 Oct 2017, Shivasharan Srikanteshwara wrote:
> In managed-interrupts case, interrupts which were affine to the offlined
> CPU is not getting migrated to another available CPU. But the
> documentation at below link says that "all interrupts" are migrated to a
> new CPU. So not all interru
.@intel.com;
> pet...@infradead.org; LKML; linux-scsi@vger.kernel.org; Sumit Saxena;
> Shivasharan Srikanteshwara
> Subject: Re: system hung up when offlining CPUs
>
> Yasuaki,
>
> On Mon, 16 Oct 2017, YASUAKI ISHIMATSU wrote:
>
> > Hi Thomas,
> >
> > > Can y
Yasuaki,
On Mon, 16 Oct 2017, YASUAKI ISHIMATSU wrote:
> Hi Thomas,
>
> > Can you please apply the patch below on top of Linus tree and retest?
> >
> > Please send me the outputs I asked you to provide last time in any case
> > (success or fail).
>
> The issue still occurs even if I applied you
Hi Thomas,
> Can you please apply the patch below on top of Linus tree and retest?
>
> Please send me the outputs I asked you to provide last time in any case
> (success or fail).
The issue still occurs even if I applied your patch to linux 4.14.0-rc4.
---
[ ...] INFO: task setroubleshootd:4972
Hi Thomas,
Sorry for the late reply.
I'll apply the patches and retest in this week.
Please wait a while.
Thanks,
Yasuaki Ishimatsu
On 10/04/2017 05:04 PM, Thomas Gleixner wrote:
> On Tue, 3 Oct 2017, Thomas Gleixner wrote:
>> Can you please apply the debug patch below.
>
> I found an issue wi
On Mon, 2 Oct 2017, YASUAKI ISHIMATSU wrote:
>
> We are talking about megasas driver.
> So I added linux-scsi and maintainers of megasas into the thread.
Another question:
Is this the in tree megasas driver and you are observing this on Linus
latest tree, i.e. 4.14-rc3+ ?
Thanks,
tglx
On Tue, 3 Oct 2017, Thomas Gleixner wrote:
> Can you please apply the debug patch below.
I found an issue with managed interrupts when the affinity mask of an
managed interrupt spawns multiple CPUs. Explanation in the changelog
below. I'm not sure that this cures the problems you have, but at leas
On Mon, 2 Oct 2017, YASUAKI ISHIMATSU wrote:
> On 09/16/2017 11:02 AM, Thomas Gleixner wrote:
> > Which driver are we talking about?
>
> We are talking about megasas driver.
Can you please apply the debug patch below.
After booting enable stack traces for the tracer:
# echo 1 >/sys/kernel/debug
On 09/16/2017 11:02 AM, Thomas Gleixner wrote:
> On Sat, 16 Sep 2017, Thomas Gleixner wrote:
>> On Thu, 14 Sep 2017, YASUAKI ISHIMATSU wrote:
>>> Here are one irq's info of megasas:
>>>
>>> - Before offline CPU
>>> /proc/irq/70/smp_affinity_list
>>> 24-29
>>>
>>> /proc/irq/70/effective_affinity
>
On Sat, 16 Sep 2017, Thomas Gleixner wrote:
> On Thu, 14 Sep 2017, YASUAKI ISHIMATSU wrote:
> > Here are one irq's info of megasas:
> >
> > - Before offline CPU
> > /proc/irq/70/smp_affinity_list
> > 24-29
> >
> > /proc/irq/70/effective_affinity
> > ,,,,,00
On Thu, 14 Sep 2017, YASUAKI ISHIMATSU wrote:
> On 09/13/2017 09:33 AM, Thomas Gleixner wrote:
> >> Question - "what happens once __cpu_disable is called and some of the
> >> queued
> >> interrupt has affinity to that particular CPU ?"
> >> I assume ideally those pending/queued Interrupt should be
On 09/13/2017 09:33 AM, Thomas Gleixner wrote:
> On Wed, 13 Sep 2017, Kashyap Desai wrote:
>>> On 09/12/2017 08:15 PM, YASUAKI ISHIMATSU wrote:
+ linux-scsi and maintainers of megasas
>
> In my server, IRQ#66-89 are sent to CPU#24-29. And if I offline
> CPU#24-29, I/O does not work,
On Wed, 13 Sep 2017, Kashyap Desai wrote:
> > On 09/12/2017 08:15 PM, YASUAKI ISHIMATSU wrote:
> > > + linux-scsi and maintainers of megasas
> > >> In my server, IRQ#66-89 are sent to CPU#24-29. And if I offline
> > >> CPU#24-29, I/O does not work, showing the following messages.
> > This i
>
> On 09/12/2017 08:15 PM, YASUAKI ISHIMATSU wrote:
> > + linux-scsi and maintainers of megasas
> >
> > When offlining CPU, I/O stops. Do you have any ideas?
> >
> > On 09/07/2017 04:23 PM, YASUAKI ISHIMATSU wrote:
> >> Hi Mark and Christoph,
> >>
> >> Sorry for the late reply. I appreciated that
On 09/12/2017 08:15 PM, YASUAKI ISHIMATSU wrote:
> + linux-scsi and maintainers of megasas
>
> When offlining CPU, I/O stops. Do you have any ideas?
>
> On 09/07/2017 04:23 PM, YASUAKI ISHIMATSU wrote:
>> Hi Mark and Christoph,
>>
>> Sorry for the late reply. I appreciated that you fixed the issu
+ linux-scsi and maintainers of megasas
When offlining CPU, I/O stops. Do you have any ideas?
On 09/07/2017 04:23 PM, YASUAKI ISHIMATSU wrote:
> Hi Mark and Christoph,
>
> Sorry for the late reply. I appreciated that you fixed the issue on kvm
> environment.
> But the issue still occurs on phys
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