Re: [Freedreno] [RFC v2] drm/msm: Add initial ci/ subdirectory

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On 5/11/22 7:46 PM, Rob Clark wrote:
On Wed, May 11, 2022 at 10:12 AM Daniel Vetter <daniel@xxxxxxxx> wrote:

On Tue, 10 May 2022 at 22:26, Rob Clark <robdclark@xxxxxxxxx> wrote:

On Tue, May 10, 2022 at 12:39 PM Jessica Zhang
<quic_jesszhan@xxxxxxxxxxx> wrote:



On 5/10/2022 7:13 AM, Tomeu Vizoso wrote:
And use it to store expectations about what the drm/msm driver is
supposed to pass in the IGT test suite.

Also include a configuration file that points to the out-of-tree CI
scripts.

By storing the test expectations along the code we can make sure both
stay in sync with each other, and so we can know when a code change
breaks those expectations.

This will allow all contributors to drm/msm to reuse the infrastructure
already in gitlab.freedesktop.org to test the driver on several
generations of the hardware.

v2:
    - Fix names of result expectation files to match SoC
    - Don't execute tests that are going to skip on all boards

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@xxxxxxxxxxxxx>
---
   Documentation/gpu/msm_automated_testing.rst   |  70 +++++++++
   drivers/gpu/drm/msm/ci/gitlab-ci.yml          |  11 ++
   drivers/gpu/drm/msm/ci/msm.testlist           | 148 ++++++++++++++++++
   .../gpu/drm/msm/ci/msm_apq8016_results.txt    | 140 +++++++++++++++++
   .../gpu/drm/msm/ci/msm_apq8096_results.txt    | 140 +++++++++++++++++
   drivers/gpu/drm/msm/ci/msm_sc7180_results.txt | 141 +++++++++++++++++
   drivers/gpu/drm/msm/ci/msm_sdm845_results.txt | 141 +++++++++++++++++
   7 files changed, 791 insertions(+)
   create mode 100644 Documentation/gpu/msm_automated_testing.rst
   create mode 100644 drivers/gpu/drm/msm/ci/gitlab-ci.yml
   create mode 100644 drivers/gpu/drm/msm/ci/msm.testlist
   create mode 100644 drivers/gpu/drm/msm/ci/msm_apq8016_results.txt
   create mode 100644 drivers/gpu/drm/msm/ci/msm_apq8096_results.txt
   create mode 100644 drivers/gpu/drm/msm/ci/msm_sc7180_results.txt
   create mode 100644 drivers/gpu/drm/msm/ci/msm_sdm845_results.txt


[snip]

diff --git a/drivers/gpu/drm/msm/ci/msm_sc7180_results.txt b/drivers/gpu/drm/msm/ci/msm_sc7180_results.txt
new file mode 100644
index 000000000000..01f7b4b399b5
--- /dev/null
+++ b/drivers/gpu/drm/msm/ci/msm_sc7180_results.txt
@@ -0,0 +1,141 @@
+igt@core_auth@getclient-simple,dmesg-warn
+igt@core_auth@getclient-master-drop,pass
+igt@core_auth@basic-auth,pass
+igt@core_auth@many-magics,pass
+igt@core_getclient,pass
+igt@core_getstats,pass
+igt@core_getversion,pass
+igt@core_setmaster_vs_auth,pass
+igt@drm_read@invalid-buffer,pass
+igt@drm_read@fault-buffer,pass
+igt@drm_read@empty-block,pass
+igt@drm_read@empty-nonblock,pass
+igt@drm_read@short-buffer-block,pass
+igt@drm_read@short-buffer-nonblock,pass
+igt@drm_read@short-buffer-wakeup,pass
+igt@kms_addfb_basic@unused-handle,pass
+igt@kms_addfb_basic@unused-pitches,pass
+igt@kms_addfb_basic@unused-offsets,pass
+igt@kms_addfb_basic@unused-modifier,pass
+igt@kms_addfb_basic@legacy-format,dmesg-warn
+igt@kms_addfb_basic@no-handle,pass
+igt@kms_addfb_basic@basic,pass
+igt@kms_addfb_basic@bad-pitch-0,pass
+igt@kms_addfb_basic@bad-pitch-32,pass
+igt@kms_addfb_basic@bad-pitch-63,pass
+igt@kms_addfb_basic@bad-pitch-128,pass
+igt@kms_addfb_basic@bad-pitch-256,pass
+igt@kms_addfb_basic@bad-pitch-1024,pass
+igt@kms_addfb_basic@bad-pitch-999,pass
+igt@kms_addfb_basic@bad-pitch-65536,pass
+igt@kms_addfb_basic@size-max,pass
+igt@kms_addfb_basic@too-wide,pass
+igt@kms_addfb_basic@too-high,dmesg-warn

For test results on Trogdor, is is possible to have them be
success/fail/skip only?

Results such as dmesg-warn/dmesg-fail are igt_runner specific and
because there isn't support for igt_runner on ChromeOS, they will be
difficult to replicate and debug.

Actually, I wonder if it would be better to just treat
dmesg-warn/dmesg-fail as pass/fail?  I'd noticed some flakes on
rockchip which looked just like unrelated dmesg msg which just
happened to show up while the test was running.

This is kinda the reason behind standardizing on drm dmesg logging, so
that we have some chances at filtering stuff out. Not sure that's a
good idea, since when your entire box splats and lockdep is dead, then
continuing to run drm tests is still fairly pointless.

I'm not sure if we are using it yet for drm-ci, but for mesa-ci we
monitor dmesg (over serial port, from the controller) for splats, so
we already have the tech for restarting or aborting the CI run.  We
don't need igt-runner to tell us.

Yep, these scripts are currently being used as-is from Mesa, so we got that functionality for free.

I think this is another reason why trying at least to standardize this
stuff over drivers would be pretty good idea.

Additionally, some of the tests, like msm_recovery, are *expected* to
generate some dmesg spam since they are intentionally triggering GPU
hangs to test the recovery mechanism.

Uh I don't like that. It just allows userspace to spam dmesg, which
doesn't seem like a great idea. That's at least why i915 dumps these
at a lower level, and in the past had a special "I'm going to whack
the gpu real hard expect hangs" knob in debugfs.

Having tests which intentionally spam dmesg above info level isn't
really good since then you need endless amounts of test-specific
encoding of what is considered a success and what not. Like when a
backmerge breaks a testcases which is already at dmesg-fail, is that
bad or not? Probably bad, but was the situation before that really
good or already kinda on fire?

I guess I could add some debugfs knobs to squelch the dmesg msgs on
gpu hangs.  In the normal case, I'd prefer that gpu hangs are not
silent.. since that is something we get in feedback reports if a user
(or dogfooder) reports a bug.

The rockchip case I mentioned was some unrelated dmesg about
linktraining failing.. presumably because there was no display
attached?  IDK, I didn't look too closely.  But my point is we could
be getting unrelated and asynchronous dmesg spam, even from other
kernel subsystems.  Letting that be part of the test results just
sounds like asking for flakes.

I think some drivers are currently a bit too buggy to behave reliably under CI unless one reduces coverage (rockchip on rk3399, for example). And some other drivers (in other subsystems as well) could do with a review of what they print to the console. I guess these are things we could and probably should fix?

Cheers,

Tomeu

BR,
-R

-Daniel

BR,
-R




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