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freedreno/drm: fallback to default BO allocation if heap alloc fails

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Allow fd_bo_heap_alloc() to return NULL if the heap is exausted (or
fragmented) instead of segfaulting. Then handle the error properly in
bo_new().

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26787>
This commit is contained in:
Dmitry Baryshkov 2023-11-13 21:24:16 +02:00 • committed by Marge Bot
parent 9e88c711a3
commit f49624fc97
2 changed files with 16 additions and 8 deletions
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8
src/freedreno/drm/freedreno_bo.c
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@ -141,9 +141,11 @@ bo_new(struct fd_device *dev, uint32_t size, uint32_t flags,
if (size < FD_BO_HEAP_BLOCK_SIZE) {
if ((flags == 0) && dev->default_heap)
return fd_bo_heap_alloc(dev->default_heap, size);
if ((flags == RING_FLAGS) && dev->ring_heap)
return fd_bo_heap_alloc(dev->ring_heap, size);
bo = fd_bo_heap_alloc(dev->default_heap, size);
else if ((flags == RING_FLAGS) && dev->ring_heap)
bo = fd_bo_heap_alloc(dev->ring_heap, size);
if (bo)
return bo;
}
/* demote cached-coherent to WC if not supported: */

16
src/freedreno/drm/freedreno_bo_heap.c
View file

@ -211,10 +211,6 @@ fd_bo_heap_alloc(struct fd_bo_heap *heap, uint32_t size)
{
heap_clean(heap, true);
struct sa_bo *s = calloc(1, sizeof(*s));
s->heap = heap;
/* util_vma does not like zero byte allocations, which we get, for
* ex, with the initial query buffer allocation on pre-a5xx:
*/
@ -229,7 +225,17 @@ fd_bo_heap_alloc(struct fd_bo_heap *heap, uint32_t size)
* (The 8k threshold is just a random guess, but seems to work ok)
*/
heap->heap.alloc_high = (size <= 8 * 1024);
s->offset = util_vma_heap_alloc(&heap->heap, size, SUBALLOC_ALIGNMENT);
uint64_t offset = util_vma_heap_alloc(&heap->heap, size, SUBALLOC_ALIGNMENT);
if (!offset) {
simple_mtx_unlock(&heap->lock);
return NULL;
}
struct sa_bo *s = calloc(1, sizeof(*s));
s->heap = heap;
s->offset = offset;
assert((s->offset / FD_BO_HEAP_BLOCK_SIZE) == (s->offset + size - 1) / FD_BO_HEAP_BLOCK_SIZE);
unsigned idx = block_idx(s);
if (HEAP_DEBUG)