On Thu, Oct 11, 2018 at 02:40:10PM +0200, Daniel Vetter wrote: > On Thu, Oct 11, 2018 at 12:11 PM Liviu Dudau <liviu.du...@arm.com> wrote: > > On Thu, Oct 11, 2018 at 10:58:30AM +0100, Alexandru-Cosmin Gheorghe wrote: > > > On Thu, Oct 11, 2018 at 10:29:42AM +0200, Daniel Vetter wrote: > > > > On Mon, Oct 08, 2018 at 09:52:04AM +0000, Alexandru-Cosmin Gheorghe > > > > wrote: > > > > > > One question I have is validating this. I think a bunch of unit > > > > > > tests, > > > > > > integrated into the existing kms selftests we already (so that > > > > > > intel-gfx-ci and other CI can run it) would be great. Both for the > > > > > > small > > > > > > helper functions (block width/height, but especially drm_pitch), > > > > > > but also > > > > > > for the drm_framebuffer_create functions, so that we can exercise > > > > > > the > > > > > > metric pile of validation corner cases. > > > > > > -Daniel > > > > > > > > > > So, you are thinking of adding tests here drivers/gpu/drm/selftests/ ? > > > > > Looking inside the folder, it seems more like a stub than proper > > > > > test suite for the drm framework, or am I missing something ? > > > > > > > > It's indeed very incomplete still. > > > > > > > > > I did run tests for all supported formats by the mali-dp, with our > > > > > internal testsuite and everything was OK for all the fourcc enabled > > > > > in mali-dp > > > > > > > > Your internal test suite is to no value to the overall community :-) Can > > > > we get those upstreamed somewhere, ideally as part of igt? > > > > On balance of things, how many more drivers are we going to cover when > > going from internal test suite to igt? +1 (intel)? +3 (finger in the > > air)? By looking at the commit log is hard to judge the traction of igt in > > the "overall community". > > With my intel hat on I don't particularly care how you test mali, and > I don't think you folks care how we test intel. (Ok maybe there's a > shared interest in having high quality upstream drivers so that OS > people can upgrade without fear of regressions across any of the hw > vendors, but that's a long story and somewhat an aside). > > But there's piles of shared infrastructure, and that's really where I > think a common test suite, ideally run as part of drm core CI (I'm > working on that, doesn't exist yet). That's where the shared CI > efforts really pay off imo. There's also some value in trying to make > sure all drivers work the same across all drivers. Both of these > pieces need to be there to be able to refactor the drm subsystem > aggressively, which we'll need to do because hw is changing all the > time. If you don't care about any of this, then pushing your driver to > upstream doesn't make a hole lot of sense imo :-)
Nah, I wasn't looking to start a holy war, it was a genuine question. I don't remember exactly the timeline but I do admit that I was a bit puzzled (confused?) by the appearance of drivers/gpu/drm/selftests given the existence of igt, so I though one of them is the "newer" thing to support. I was on the fence on which one is worth backing, hence the quantitative question (how many more drivers actively get tested with igt?). I know that I have used igt to test mali-dp before submission, we also had some patches that need refreshing to add writeback support (sorry for being slow on those), but I haven't seen people contributing in earnest to igt support for their drivers (vc4 is the newest, amdgpu from a few months ago, I thought there was some adreno stuff but I can't find right now). So for the passer-bys (aka managers) it is hard (sometimes) to see the benefit of investing effort in something that doesn't look like a clear winner. Maybe igt could use some "Supported drivers" section in the README so we can point it out to our decision makers? Best regards, Liviu > > Cheers, Daniel > -- > Daniel Vetter > Software Engineer, Intel Corporation > +41 (0) 79 365 57 48 - http://blog.ffwll.ch -- ==================== | I would like to | | fix the world, | | but they're not | | giving me the | \ source code! / --------------- ¯\_(ツ)_/¯ _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
