From: Oded Gabbay <oded.gabbay@amd.com>
To: Jesse Barnes <jbarnes@virtuousgeek.org>, Joerg Roedel <jroedel@suse.de>
Cc: <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 1/2] mm: export find_extend_vma and handle_mm_fault for driver use
Date: Thu, 6 Nov 2014 10:51:02 +0200 [thread overview]
Message-ID: <545B3676.9030609@amd.com> (raw)
In-Reply-To: <20141105135109.39ea54fe@jbarnes-hsw>
On 11/05/2014 11:51 PM, Jesse Barnes wrote:
> On Wed, 5 Nov 2014 13:03:51 +0100
> Joerg Roedel <jroedel@suse.de> wrote:
>
>> Hi Oded, Jesse,
>>
>> On Wed, Oct 29, 2014 at 11:33:38AM +0200, Oded Gabbay wrote:
>>> I tested our amdkfd driver with your patches applied (kernel 3.17.1).
>>> I run OpenCL tests, Aparapi/Sumatra (Java) and OpenMP
>>>
>>> All tests passed and I didn't see any kernel error messages.
>>>
>>> So:
>>>
>>> Tested-by: Oded Gabbay <oded.gabbay@amd.com>
>>
>> Thanks for testing Oded. Jesse, the patch looks good to me, except the
>> task accounting for the page-faults. I'd like to get rid of using
>> task_struct in the IOMMUv2 driver entirely if possible. Also it is not
>> really the CPU task causing the faults, but some non-CPU process.
>
> Hm, but the CPU task initiates the activity on the GPU, so we should
> account for it somewhere, right? I guess I had been thinking of the
> "task" as spanning the CPUs and GPUs and other devices in the system,
> rather than just representing the CPU activity.
Joerg, sorry for the dumb question but what do you mean by "task accounting for
page-faults"? Where is that code in IOMMUv2 driver now ?
>
>> So can you please remove that code and resend the patches with Oded's
>> Tested-by and Andrew Morton on Cc? I think these patches should go
>> through the -mm tree.
>
> Sure, thanks.
>
next prev parent reply other threads:[~2014-11-06 8:51 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-24 19:34 [PATCH 1/2] mm: export find_extend_vma and handle_mm_fault for driver use Jesse Barnes
2014-10-24 19:34 ` [PATCH 2/2] iommu/amd: use handle_mm_fault directly Jesse Barnes
2014-10-27 15:13 ` [PATCH 1/2] mm: export find_extend_vma and handle_mm_fault for driver use Joerg Roedel
2014-10-27 15:15 ` Oded Gabbay
2014-10-27 15:35 ` Jesse Barnes
2014-10-27 15:37 ` Oded Gabbay
2014-10-29 9:33 ` Oded Gabbay
2014-10-29 14:37 ` Jesse Barnes
2014-11-05 12:03 ` Joerg Roedel
2014-11-05 21:51 ` Jesse Barnes
2014-11-06 8:51 ` Oded Gabbay [this message]
2014-11-06 13:03 ` Joerg Roedel
2014-11-06 13:01 ` Joerg Roedel
2014-11-12 22:07 ` Jesse Barnes
2014-11-17 16:53 ` Joerg Roedel
2014-11-12 22:10 Jesse Barnes
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