On Tue, Sep 24, 2024 at 05:57:07PM GMT, Vignesh Raman wrote: > Hi, > > On 12/09/24 11:18, Dmitry Baryshkov wrote: > > On Mon, Sep 09, 2024 at 07:34:04AM GMT, Rob Clark wrote: > > > On Mon, Sep 9, 2024 at 2:54 AM Dmitry Baryshkov > > > <dmitry.baryshkov@xxxxxxxxxx> wrote: > > > > > > > > On Mon, 9 Sept 2024 at 10:50, Maxime Ripard <mripard@xxxxxxxxxx> wrote: > > > > > > > > > > Hi, > > > > > > > > > > On Tue, Jul 09, 2024 at 01:27:51AM GMT, Dmitry Baryshkov wrote: > > > > > > On Mon, 8 Jul 2024 at 21:38, Rob Clark <robdclark@xxxxxxxxx> wrote: > > > > > > > > > > > > > > On Mon, Jul 8, 2024 at 1:52 AM Daniel Vetter <daniel.vetter@xxxxxxxx> wrote: > > > > > > > > > > > > > > > > On Fri, Jul 05, 2024 at 12:31:36PM -0700, Rob Clark wrote: > > > > > > > > > On Fri, Jul 5, 2024 at 3:36 AM Daniel Vetter <daniel.vetter@xxxxxxxx> wrote: > > > > > > > > > > > > > > > > > > > > On Thu, Jul 04, 2024 at 08:40:26AM -0700, Rob Clark wrote: > > > > > > > > > > > On Thu, Jul 4, 2024 at 7:08 AM Daniel Vetter <daniel.vetter@xxxxxxxx> wrote: > > > > > > > > > > > > > > > > > > > > > > > > On Tue, Jul 02, 2024 at 05:32:39AM -0700, Rob Clark wrote: > > > > > > > > > > > > > On Fri, Jun 28, 2024 at 10:44 AM Daniel Vetter <daniel@xxxxxxxx> wrote: > > > > > > > > > > > > > > > > > > > > > > > > > > > > On Thu, Jun 27, 2024 at 11:51:37AM -0700, Rob Clark wrote: > > > > > > > > > > > > > > > On Wed, Jun 26, 2024 at 10:47 AM Daniel Vetter <daniel@xxxxxxxx> wrote: > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > On Wed, Jun 26, 2024 at 11:38:30AM +0300, Dmitry Baryshkov wrote: > > > > > > > > > > > > > > > > > On Wed, Jun 26, 2024 at 09:32:44AM GMT, Daniel Vetter wrote: > > > > > > > > > > > > > > > > > > On Mon, Jun 24, 2024 at 10:25:25AM -0300, Helen Koike wrote: > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > On 24/06/2024 02:34, Vignesh Raman wrote: > > > > > > > > > > > > > > > > > > > > Hi, > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > On 15/03/24 22:50, Rob Clark wrote: > > > > > > > > > > > > > > > > > > > > > Basically, I often find myself needing to merge CI patches on top of > > > > > > > > > > > > > > > > > > > > > msm-next in order to run CI, and then after a clean CI run, reset HEAD > > > > > > > > > > > > > > > > > > > > > back before the merge and force-push. Which isn't really how things > > > > > > > > > > > > > > > > > > > > > should work. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > This sounds more like you want an integration tree like drm-tip. Get msm > > > > > > > > > > > > > > > > > > branches integrated there, done. Backmerges just for integration testing > > > > > > > > > > > > > > > > > > are not a good idea indeed. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > But AFAIU this doesn't help for pre-merge testing, ie. prior to a > > > > > > > > > > > > > > > patch landing in msm-next > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > My idea was to have a drm-ci-next managed similar to drm-misc-next, if > > > > > > > > > > > > > > > we have needed drm/ci patches we could push them to drm-ci-next, and > > > > > > > > > > > > > > > then merge that into the driver tree (along with a PR from drm-ci-next > > > > > > > > > > > > > > > to Dave). > > > > > > > > > > > > > > > > > > > > > > > > > > > > I guess I'm confused about what kind of pre-merge testing we're talking > > > > > > > > > > > > > > about then ... Or maybe this just doesn't work too well with the linux > > > > > > > > > > > > > > kernel. The model is that you have some pile of trees, they're split up, > > > > > > > > > > > > > > and testing of all the trees together is done in integration trees like > > > > > > > > > > > > > > linux-next or drm-tip. > > > > > > > > > > > > > > > > > > > > > > > > > > pre-merge: for msm we've been collecting up patches from list into a > > > > > > > > > > > > > fast-forward MR which triggers CI before merging to msm-next/msm-fixes > > > > > > > > > > > > > > > > > > > > > > > > > > Ideally drm-misc and other trees would do similar, we'd catch more > > > > > > > > > > > > > regressions that way. For example, in msm-next the nodebugfs build is > > > > > > > > > > > > > currently broken, because we merged drm-misc-next at a time when > > > > > > > > > > > > > komeda was broken: > > > > > > > > > > > > > > > > > > > > > > > > > > https://gitlab.freedesktop.org/drm/msm/-/jobs/60575681#L9520 > > > > > > > > > > > > > > > > > > > > > > > > > > If drm-misc was using pre-merge CI this would have been caught and the > > > > > > > > > > > > > offending patch dropped. > > > > > > > > > > > > > > > > > > > > > > > > That sounds more like we should push on the drm-misc pre-merge CI boulder > > > > > > > > > > > > to move it uphill, than add even more trees to make it even harder to get > > > > > > > > > > > > there long term ... > > > > > > > > > > > > > > > > > > > > > > > > Short term it helps locally to have finer trees, but only short term and > > > > > > > > > > > > only very locally. > > > > > > > > > > > > > > > > > > > > > > The path to have fewer trees (ideally only one for all of drm) is to > > > > > > > > > > > use gitlab MRs to land everything :-) > > > > > > > > > > > > > > > > > > > > > > drm-ci-next is only a stop-gap.. but one that we need. The > > > > > > > > > > > ${branchname}-external-fixes trick covers _most_ cases where we need > > > > > > > > > > > unrelated patches (ie. to fix random ToT breakage outside of drm or in > > > > > > > > > > > core drm), but it doesn't help when the needed changes are yml > > > > > > > > > > > (because gitlab processes all the yml before merging the > > > > > > > > > > > -external-fixes branch). This is where we need drm-ci-next, otherwise > > > > > > > > > > > we are having to create a separate MR which cherry-picks drm/ci > > > > > > > > > > > patches for doing the CI. This is a rather broken process. > > > > > > > > > > > > > > > > > > > > So what I don't get is ... if we CI drm-misc, how does that not help > > > > > > > > > > improve the situation here? Step one would be post-merge (i.e. just enable > > > > > > > > > > CI in the repo), then get MRs going. > > > > > > > > > > > > > > > > > > I guess post-merge is better than nothing.. but pre-merge is better. > > > > > > > > > > > > > > > > > > post-merge can work if you have a "sheriff" system where someone > > > > > > > > > (perhaps on a rotation) is actively monitoring results and "revert and > > > > > > > > > ask questions later" when something breaks. Pre-merge ensures the > > > > > > > > > interested party is involved in the process ;-) > > > > > > > > > > > > > > > > So ... make that happen? And it doesn't have to be for all of drm-misc, > > > > > > > > mesa after all switched over to MR also on a bit a driver/area basis. So > > > > > > > > agreeing among all drm-ci folks to use gitlab MR in drm-misc for pre-merge > > > > > > > > testing shouldn't be that hard to make happen. And unlike a separate > > > > > > > > branch it's not some kind of detour with a good chance to get stuck in a > > > > > > > > local optimum. > > > > > > > > > > > > > > Tree vs branch doesn't really have much in the way of distinction, > > > > > > > modulo gitlab permissions. In that it doesn't do much good if drm/ci > > > > > > > patches are landing on a different branch. > > > > > > > > > > > > > > I guess what you are suggesting is that we have a single tree/branch > > > > > > > that drm/ci + drm/msm + (plus whoever else wants to get in on the > > > > > > > drm/ci, so probably at least vkms) lands patches into via gitlab MRs? > > > > > > > > > > > > This again brings a separate CI-enabled tree. I think it has been > > > > > > suggested to start with enabling DRM CI for drm-misc branches. Then we > > > > > > can possibly start landing MRs with CI testing (probably starting with > > > > > > vkms). > > > > > > > > > > It's something we've discussed with Sima for a while, but enabling CI on > > > > > drm-misc at some point will make sense so we could just as well start > > > > > now. > > > > > > > > > > The biggest unknown at the moment to start doing so is how we could keep > > > > > drm-tip and the rerere repo with MR. > > > > > > > > Let's do a slow start and begin with post-merge testing. At least this > > > > gives us an idea of how stable it is (and what does it take to keep it > > > > green). Maybe we can perform post-merge testing for both drm-misc and > > > > drm-tip. > > > > > > The one thing is that currently the runtime for igt is quite long > > > (~1hr) because you can't really parallelize kms tests. So maybe > > > nightly scheduled runs would be a better idea. > > > > SGTM. So, the question would be, who can set it up? > > > > We will test the nightly pipelines in a forked repo and then will > set it up for drm-misc and drm-tip. We also had a discussion with Dave and Daniel at Plumbers, and it looks like setting up a compilation + kunit run for each PR sent to Dave and Sima would be a good first step. Maxime
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