Matthew Brost b43b995048 drm/i915/guc: Add stall timer to non blocking CTB send function ... Implement a stall timer which fails H2G CTBs once a period of time with no forward progress is reached to prevent deadlock. v2: (Michal) - Improve error message in ct_deadlock() - Set broken when ct_deadlock() returns true - Return -EPIPE on ct_deadlock() v3: (Michal) - Add ms to stall timer comment (Matthew) - Move broken check to intel_guc_ct_send() Signed-off-by: John Harrison <John.C.Harrison@Intel.com> Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Signed-off-by: Matthew Brost <matthew.brost@intel.com> Reviewed-by: John Harrison <John.C.Harrison@Intel.com> Signed-off-by: John Harrison <John.C.Harrison@Intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210708162055.129996-6-matthew.brost@intel.com		2021-07-13 13:50:03 -07:00
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drm	drm/i915/guc: Add stall timer to non blocking CTB send function	2021-07-13 13:50:03 -07:00
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