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drm/i915: Use correct index for backtracking HUNG semaphores

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When decoding the semaphores inside hangcheck, we need to use the hw-id
and not the local array index.

Fixes: de1add3605 ("drm/i915: Decouple execbuf uAPI ...")
Testcase: igt/gem_exec_whisper/hang # gen6-7
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161003124516.12388-3-chris@chris-wilson.co.uk
(cherry picked from commit 348b9b1192)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Chris Wilson 2016-10-03 13:45:16 +01:00 • committed by Jani Nikula
parent ca5732c53b
commit 27399eeec2
1 changed files with 4 additions and 4 deletions
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8
drivers/gpu/drm/i915/i915_irq.c
View file

@ -2822,7 +2822,7 @@ semaphore_wait_to_signaller_ring(struct intel_engine_cs *engine, u32 ipehr,
if (engine == signaller) if (engine == signaller)
continue; continue;
if (offset == signaller->semaphore.signal_ggtt[engine->id]) if (offset == signaller->semaphore.signal_ggtt[engine->hw_id])
return signaller; return signaller;
} }
} else { } else {
@ -2832,13 +2832,13 @@ semaphore_wait_to_signaller_ring(struct intel_engine_cs *engine, u32 ipehr,
if(engine == signaller) if(engine == signaller)
continue; continue;
if (sync_bits == signaller->semaphore.mbox.wait[engine->id]) if (sync_bits == signaller->semaphore.mbox.wait[engine->hw_id])
return signaller; return signaller;
} }
} }
DRM_DEBUG_DRIVER("No signaller ring found for ring %i, ipehr 0x%08x, offset 0x%016llx\n", DRM_DEBUG_DRIVER("No signaller ring found for %s, ipehr 0x%08x, offset 0x%016llx\n",
engine->id, ipehr, offset); engine->name, ipehr, offset);
return ERR_PTR(-ENODEV); return ERR_PTR(-ENODEV);
} }