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drm/i915: Dump the engine state before declaring wedged from wait_for_engines()

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If wait_for_engines() fails and we resort to declaring the HW wedged,
dump the engine state for debugging.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171211194135.27095-2-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2017-12-11 19:41:35 +00:00
parent ee42c00e1c
commit 59e4b19d62
1 changed files with 12 additions and 1 deletions
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13
drivers/gpu/drm/i915/i915_gem.c
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@ -3534,7 +3534,18 @@ static int wait_for_timeline(struct i915_gem_timeline *tl, unsigned int flags)
static int wait_for_engines(struct drm_i915_private *i915)
{
if (wait_for(intel_engines_are_idle(i915), I915_IDLE_ENGINES_TIMEOUT)) {
DRM_ERROR("Failed to idle engines, declaring wedged!\n");
dev_err(i915->drm.dev,
"Failed to idle engines, declaring wedged!\n");
if (drm_debug & DRM_UT_DRIVER) {
struct drm_printer p = drm_debug_printer(__func__);
struct intel_engine_cs *engine;
enum intel_engine_id id;
for_each_engine(engine, i915, id)
intel_engine_dump(engine, &p,
"%s", engine->name);
}
i915_gem_set_wedged(i915);
return -EIO;
}