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Subject: Re: [PATCH 2/2] drm/ttm: Use pr_debug for all output from
 ttm_bo_evict
To:     "Zhang, Jerry(Junwei)" <Jerry.Zhang@amd.com>,
        Christian Koenig <christian.koenig@amd.com>,
        Huang Rui <ray.huang@amd.com>,
        Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
        Maxime Ripard <maxime.ripard@bootlin.com>,
        Sean Paul <sean@poorly.run>, David Airlie <airlied@linux.ie>
Cc:     linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org
References: <20181205165621.5805-1-michel@daenzer.net>
 <20181205165621.5805-2-michel@daenzer.net>
 <b0b57acb-7152-ab1a-855a-3de8c77fa425@amd.com>
From:   =?UTF-8?Q?Michel_D=c3=a4nzer?= <michel@daenzer.net>
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Date:   Thu, 6 Dec 2018 10:09:35 +0100
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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 <michel.daenzer@amd.com>
>>
>> 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 <michel.daenzer@amd.com>
> 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 plenty as far as I'm concerned. :)


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer