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SubjectRe: [PATCH 2/2] drm/ttm: Use pr_debug for all output from ttm_bo_evict
On 2018-12-06 10:49 a.m., Christian König wrote:
> Am 06.12.18 um 10:39 schrieb Zhang, Jerry(Junwei):
>> On 12/6/18 5:33 PM, Koenig, Christian wrote:
>>> Am 06.12.18 um 10:09 schrieb Michel Dänzer:
>>>> On 2018-12-06 3:43 a.m., Zhang, Jerry(Junwei) wrote:
>>>>> On 12/6/18 12:56 AM, Michel Dänzer wrote:
>>>>>> From: Michel Dänzer <>
>>>>>> All the output is related, so it should all be printed the same way.
>>>>>> Some of it was using pr_debug, but some of it appeared in dmesg by
>>>>>> default. The caller should handle failure, so there's no need to spam
>>>>>> dmesg with potentially quite a lot of output by default.
>>>>>> Signed-off-by: Michel Dänzer <>
>>>>> Sounds reasonable, but personally prefer to show error when some
>>>>> vital incident happens, e.g. no memory on eviction.
>>>> The amdgpu driver still prints these in that case:
>>>>    [drm:amdgpu_cs_ioctl [amdgpu]] *ERROR*
>>>> amdgpu_cs_list_validate(validated) failed.
>>>>    [drm:amdgpu_cs_ioctl [amdgpu]] *ERROR* Not enough memory for
>>>> command submission!
>> That's from cs submit, perhaps it may come from other places by
>> ttm_bo_evict_mm().
>> Is that right? Christian.
> Yeah, exactly my thinking as well. When we silence the TTM messages we
> might miss those cases.
> Additional to that other drivers using TTM might not have those messages
> either.
> If TTM is to noisy we should use ratelimit and/or reduce the number and
> size of the warning messages.
> A simple "Warning, I ran out of memory during eviction!" should do.

Just dropping the last hunk of this patch should do then. I can do that.

Earthling Michel Dänzer |
Libre software enthusiast | Mesa and X developer

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