From 59e4b19d622ab22d138862ba287859e3aacd5478 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Mon, 11 Dec 2017 19:41:35 +0000 Subject: [PATCH] drm/i915: Dump the engine state before declaring wedged from wait_for_engines() If wait_for_engines() fails and we resort to declaring the HW wedged, dump the engine state for debugging. Signed-off-by: Chris Wilson Cc: Joonas Lahtinen Cc: Mika Kuoppala Reviewed-by: Joonas Lahtinen Link: https://patchwork.freedesktop.org/patch/msgid/20171211194135.27095-2-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/i915_gem.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 55e4475fabe0..8c92fcd6f805 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -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; } -- 2.30.2