[PATCH 3/5] drm/i915: Remove allow_alloc from i915_gem_object_get_sg*

[Jason Ekstrand]

This reverts the rest of 0edbb9ba1bfe ("drm/i915: Move cmd parser
pinning to execbuffer").  Now that the only user of i915_gem_object_get_sg
without allow_alloc has been removed, we can drop the parameter.  This
portion of the revert was broken into its own patch to aid review.

Signed-off-by: Jason Ekstrand <jason at jlekstrand.net>
Cc: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
Reviewed-by: Jon Bloomfield <jon.bloomfield at intel.com>
Acked-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
 drivers/gpu/drm/i915/gem/i915_gem_object.h | 10 +++++-----
 drivers/gpu/drm/i915/gem/i915_gem_pages.c  | 20 ++++----------------
 drivers/gpu/drm/i915/gem/i915_gem_ttm.c    |  2 +-
 drivers/gpu/drm/i915/gt/intel_ggtt.c       |  2 +-
 4 files changed, 11 insertions(+), 23 deletions(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.h b/drivers/gpu/drm/i915/gem/i915_gem_object.h
index d423d8cac4f26..1603ed90d9c13 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object.h
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object.h
@@ -341,22 +341,22 @@ struct scatterlist *
 __i915_gem_object_get_sg(struct drm_i915_gem_object *obj,
 			 struct i915_gem_object_page_iter *iter,
 			 unsigned int n,
-			 unsigned int *offset, bool allow_alloc, bool dma);
+			 unsigned int *offset, bool dma);
 
 static inline struct scatterlist *
 i915_gem_object_get_sg(struct drm_i915_gem_object *obj,
 		       unsigned int n,
-		       unsigned int *offset, bool allow_alloc)
+		       unsigned int *offset)
 {
-	return __i915_gem_object_get_sg(obj, &obj->mm.get_page, n, offset, allow_alloc, false);
+	return __i915_gem_object_get_sg(obj, &obj->mm.get_page, n, offset, false);
 }
 
 static inline struct scatterlist *
 i915_gem_object_get_sg_dma(struct drm_i915_gem_object *obj,
 			   unsigned int n,
-			   unsigned int *offset, bool allow_alloc)
+			   unsigned int *offset)
 {
-	return __i915_gem_object_get_sg(obj, &obj->mm.get_dma_page, n, offset, allow_alloc, true);
+	return __i915_gem_object_get_sg(obj, &obj->mm.get_dma_page, n, offset, true);
 }
 
 struct page *
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_pages.c b/drivers/gpu/drm/i915/gem/i915_gem_pages.c
index f2f850e31b8ed..40cad2655b637 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_pages.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_pages.c
@@ -467,7 +467,7 @@ __i915_gem_object_get_sg(struct drm_i915_gem_object *obj,
 			 struct i915_gem_object_page_iter *iter,
 			 unsigned int n,
 			 unsigned int *offset,
-			 bool allow_alloc, bool dma)
+			 bool dma)
 {
 	struct scatterlist *sg;
 	unsigned int idx, count;
@@ -489,9 +489,6 @@ __i915_gem_object_get_sg(struct drm_i915_gem_object *obj,
 	if (n < READ_ONCE(iter->sg_idx))
 		goto lookup;
 
-	if (!allow_alloc)
-		goto manual_lookup;
-
 	mutex_lock(&iter->lock);
 
 	/* We prefer to reuse the last sg so that repeated lookup of this
@@ -541,16 +538,7 @@ __i915_gem_object_get_sg(struct drm_i915_gem_object *obj,
 	if (unlikely(n < idx)) /* insertion completed by another thread */
 		goto lookup;
 
-	goto manual_walk;
-
-manual_lookup:
-	idx = 0;
-	sg = obj->mm.pages->sgl;
-	count = __sg_page_count(sg);
-
-manual_walk:
-	/*
-	 * In case we failed to insert the entry into the radixtree, we need
+	/* In case we failed to insert the entry into the radixtree, we need
 	 * to look beyond the current sg.
 	 */
 	while (idx + count <= n) {
@@ -597,7 +585,7 @@ i915_gem_object_get_page(struct drm_i915_gem_object *obj, unsigned int n)
 
 	GEM_BUG_ON(!i915_gem_object_has_struct_page(obj));
 
-	sg = i915_gem_object_get_sg(obj, n, &offset, true);
+	sg = i915_gem_object_get_sg(obj, n, &offset);
 	return nth_page(sg_page(sg), offset);
 }
 
@@ -623,7 +611,7 @@ i915_gem_object_get_dma_address_len(struct drm_i915_gem_object *obj,
 	struct scatterlist *sg;
 	unsigned int offset;
 
-	sg = i915_gem_object_get_sg_dma(obj, n, &offset, true);
+	sg = i915_gem_object_get_sg_dma(obj, n, &offset);
 
 	if (len)
 		*len = sg_dma_len(sg) - (offset << PAGE_SHIFT);
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
index 6589411396d3f..f253b11e9e367 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_ttm.c
@@ -589,7 +589,7 @@ static unsigned long i915_ttm_io_mem_pfn(struct ttm_buffer_object *bo,
 
 	GEM_WARN_ON(bo->ttm);
 
-	sg = __i915_gem_object_get_sg(obj, &obj->ttm.get_io_page, page_offset, &ofs, true, true);
+	sg = __i915_gem_object_get_sg(obj, &obj->ttm.get_io_page, page_offset, &ofs, true);
 
 	return ((base + sg_dma_address(sg)) >> PAGE_SHIFT) + ofs;
 }
diff --git a/drivers/gpu/drm/i915/gt/intel_ggtt.c b/drivers/gpu/drm/i915/gt/intel_ggtt.c
index 20e46b8433248..9d445ad9a3422 100644
--- a/drivers/gpu/drm/i915/gt/intel_ggtt.c
+++ b/drivers/gpu/drm/i915/gt/intel_ggtt.c
@@ -1494,7 +1494,7 @@ intel_partial_pages(const struct i915_ggtt_view *view,
 	if (ret)
 		goto err_sg_alloc;
 
-	iter = i915_gem_object_get_sg_dma(obj, view->partial.offset, &offset, true);
+	iter = i915_gem_object_get_sg_dma(obj, view->partial.offset, &offset);
 	GEM_BUG_ON(!iter);
 
 	sg = st->sgl;
-- 
2.31.1