Re: [PATCH 2/2] drm/ttm: Use pr_debug for all output from ttm_bo_evict

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On Thu, 2018-12-06 at 17:39 +0800, Zhang, Jerry(Junwei) wrote:
> 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 <michel.daenzer@xxxxxxx>
> > > > > 
> > > > > 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@xxxxxxx>
> > > > 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!

Aren't dump_stack()s already done on all these allocation failures?
I don't notice any use of __GFP_NOWARN on generic allocations in drm.


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