diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gem/i915_gem_context.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gem/i915_gem_context.c | 47 |
1 files changed, 32 insertions, 15 deletions
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index cbdf2fb32636..de6e55af82cf 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -333,10 +333,8 @@ static bool __cancel_engine(struct intel_engine_cs *engine) return __reset_engine(engine); } -static struct intel_engine_cs * -active_engine(struct dma_fence *fence, struct intel_context *ce) +static struct intel_engine_cs *__active_engine(struct i915_request *rq) { - struct i915_request *rq = to_request(fence); struct intel_engine_cs *engine, *locked; /* @@ -360,6 +358,29 @@ active_engine(struct dma_fence *fence, struct intel_context *ce) return engine; } +static struct intel_engine_cs *active_engine(struct intel_context *ce) +{ + struct intel_engine_cs *engine = NULL; + struct i915_request *rq; + + if (!ce->timeline) + return NULL; + + rcu_read_lock(); + list_for_each_entry_reverse(rq, &ce->timeline->requests, link) { + if (i915_request_completed(rq)) + break; + + /* Check with the backend if the request is inflight */ + engine = __active_engine(rq); + if (engine) + break; + } + rcu_read_unlock(); + + return engine; +} + static void kill_context(struct i915_gem_context *ctx) { struct i915_gem_engines_iter it; @@ -383,17 +404,15 @@ static void kill_context(struct i915_gem_context *ctx) */ for_each_gem_engine(ce, __context_engines_static(ctx), it) { struct intel_engine_cs *engine; - struct dma_fence *fence; - - if (!ce->timeline) - continue; - fence = i915_active_fence_get(&ce->timeline->last_request); - if (!fence) - continue; - - /* Check with the backend if the request is still inflight */ - engine = active_engine(fence, ce); + /* + * Check the current active state of this context; if we + * are currently executing on the GPU we need to evict + * ourselves. On the other hand, if we haven't yet been + * submitted to the GPU or if everything is complete, + * we have nothing to do. + */ + engine = active_engine(ce); /* First attempt to gracefully cancel the context */ if (engine && !__cancel_engine(engine)) @@ -403,8 +422,6 @@ static void kill_context(struct i915_gem_context *ctx) * reset. We hope the collateral damage is worth it. */ __reset_context(ctx, engine); - - dma_fence_put(fence); } } |