drm/i915/gt: Warn CI about an unrecoverable wedge

If we have a wedged GPU that we need to recover, but fail, add a taint
for CI to pickup and schedule a reboot.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: Petri Latvala <petri.latvala@intel.com>
Reviewed-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191002160034.5121-1-chris@chris-wilson.co.uk

diff --git a/drivers/gpu/drm/i915/gt/intel_reset.c b/drivers/gpu/drm/i915/gt/intel_reset.c
index 34791fc79deacefa6d2518f6e9f07cb87f0e3919..77445d100ca8292e6362c4eef14551b0ee7f22fa 100644 (file)
--- a/drivers/gpu/drm/i915/gt/intel_reset.c
+++ b/drivers/gpu/drm/i915/gt/intel_reset.c
@@ -872,8 +872,14 @@ static bool __intel_gt_unset_wedged(struct intel_gt *gt)
        ok = !HAS_EXECLISTS(gt->i915); /* XXX better agnosticism desired */
        if (!INTEL_INFO(gt->i915)->gpu_reset_clobbers_display)
                ok = __intel_gt_reset(gt, ALL_ENGINES) == 0;
-       if (!ok)
+       if (!ok) {
+               /*
+                * Warn CI about the unrecoverable wedged condition.
+                * Time for a reboot.
+                */
+               add_taint_for_CI(TAINT_WARN);
                return false;
+       }
 
        /*
         * Undo nop_submit_request. We prevent all new i915 requests from