[PATCH 18/25] Revert "drm/i915: use a separate context for gpu relocs"
Chris Wilson
chris at chris-wilson.co.uk
Sun Nov 10 10:03:16 UTC 2019
This reverts commit 8a9a982767b7c89b2f23290e4f0f21f194b79dfe.
---
.../gpu/drm/i915/gem/i915_gem_execbuffer.c | 30 +------------------
1 file changed, 1 insertion(+), 29 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
index e4f5c269150a..5dbfedeb0a6f 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
@@ -253,7 +253,6 @@ struct i915_execbuffer {
bool has_fence : 1;
bool needs_unfenced : 1;
- struct intel_context *ce;
struct i915_request *rq;
u32 *rq_cmd;
unsigned int rq_size;
@@ -884,9 +883,6 @@ static void eb_destroy(const struct i915_execbuffer *eb)
{
GEM_BUG_ON(eb->reloc_cache.rq);
- if (eb->reloc_cache.ce)
- intel_context_put(eb->reloc_cache.ce);
-
if (eb->lut_size > 0)
kfree(eb->buckets);
}
@@ -910,7 +906,6 @@ static void reloc_cache_init(struct reloc_cache *cache,
cache->has_fence = cache->gen < 4;
cache->needs_unfenced = INTEL_INFO(i915)->unfenced_needs_alignment;
cache->node.flags = 0;
- cache->ce = NULL;
cache->rq = NULL;
cache->rq_size = 0;
}
@@ -1180,7 +1175,7 @@ static int __reloc_gpu_alloc(struct i915_execbuffer *eb,
if (err)
goto err_unmap;
- rq = intel_context_create_request(cache->ce);
+ rq = i915_request_create(eb->context);
if (IS_ERR(rq)) {
err = PTR_ERR(rq);
goto err_unpin;
@@ -1251,29 +1246,6 @@ static u32 *reloc_gpu(struct i915_execbuffer *eb,
if (!intel_engine_can_store_dword(eb->engine))
return ERR_PTR(-ENODEV);
- if (!cache->ce) {
- struct intel_context *ce;
-
- /*
- * The CS pre-parser can pre-fetch commands across
- * memory sync points and starting gen12 it is able to
- * pre-fetch across BB_START and BB_END boundaries
- * (within the same context). We therefore use a
- * separate context gen12+ to guarantee that the reloc
- * writes land before the parser gets to the target
- * memory location.
- */
- if (cache->gen >= 12)
- ce = intel_context_create(eb->context->gem_context,
- eb->engine);
- else
- ce = intel_context_get(eb->context);
- if (IS_ERR(ce))
- return ERR_CAST(ce);
-
- cache->ce = ce;
- }
-
err = __reloc_gpu_alloc(eb, vma, len);
if (unlikely(err))
return ERR_PTR(err);
--
2.24.0
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