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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-07-09 17:54:26 -0700 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-07-11 11:09:33 +0100 |
| commit | 71b0846c17b9c86ffa9a18f09f8cfda4fe41ee86 (patch) | |
| tree | de94e1ba3f0570d2608ae72f40ad5c97868bef1b /drivers/gpu/drm/i915/gt/intel_engine_cs.c | |
| parent | bf1315b830a4ea2e3842400982cf66f15b40b7ec (diff) | |
| download | linux-71b0846c17b9c86ffa9a18f09f8cfda4fe41ee86.tar.bz2 | |
drm/i915/guc: Remove preemption support for current fw
Preemption via GuC submission is not being supported with its current
legacy incarnation. The current FW does support a similar pre-emption
flow via H2G, but it is class-based instead of being instance-based,
which doesn't fit well with the i915 tracking. To fix this, the
firmware is being updated to better support our needs with a new flow,
so we can safely remove the old code.
v2 (Daniele): resurrect & rebase, reword commit message, remove
preempt_context as well
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: John Harrison <John.C.Harrison@Intel.com>
Acked-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Michał Winiarski <michal.winiarski@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190710005437.3496-2-daniele.ceraolospurio@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_engine_cs.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_engine_cs.c | 13 |
1 files changed, 0 insertions, 13 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c index bdf279fa3b2e..76b5c068a26d 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c @@ -841,15 +841,6 @@ int intel_engine_init_common(struct intel_engine_cs *engine) if (ret) return ret; - /* - * Similarly the preempt context must always be available so that - * we can interrupt the engine at any time. However, as preemption - * is optional, we allow it to fail. - */ - if (i915->preempt_context) - pin_context(i915->preempt_context, engine, - &engine->preempt_context); - ret = measure_breadcrumb_dw(engine); if (ret < 0) goto err_unpin; @@ -861,8 +852,6 @@ int intel_engine_init_common(struct intel_engine_cs *engine) return 0; err_unpin: - if (engine->preempt_context) - intel_context_unpin(engine->preempt_context); intel_context_unpin(engine->kernel_context); return ret; } @@ -887,8 +876,6 @@ void intel_engine_cleanup_common(struct intel_engine_cs *engine) if (engine->default_state) i915_gem_object_put(engine->default_state); - if (engine->preempt_context) - intel_context_unpin(engine->preempt_context); intel_context_unpin(engine->kernel_context); GEM_BUG_ON(!llist_empty(&engine->barrier_tasks)); |