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intel: Check and propagate errors from building reloc-tree 

Instead of forcing the caller to check after every emit_reloc(), we can
flag the object as being in error, propagating that error upwards through
the relocation tree, and failing the eventual batch buffer execution.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
main
Chris Wilson 2009-12-02 13:12:39 +00:00
parent b73612e4fd
commit 792fed1e24
1 changed files with 35 additions and 2 deletions
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37
intel/intel_bufmgr_gem.c
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@ -153,6 +153,11 @@ struct _drm_intel_bo_gem {
*/
char used_as_reloc_target;
/**
* Boolean of whether we have encountered an error whilst building the relocation tree.
*/
char has_error;
/**
* Boolean of whether this buffer can be re-used
*/
@ -396,6 +401,17 @@ drm_intel_setup_reloc_list(drm_intel_bo *bo)
bo_gem->relocs = malloc(max_relocs *
sizeof(struct drm_i915_gem_relocation_entry));
bo_gem->reloc_target_bo = malloc(max_relocs * sizeof(drm_intel_bo *));
if (bo_gem->relocs == NULL || bo_gem->reloc_target_bo == NULL) {
bo_gem->has_error = 1;
free (bo_gem->relocs);
bo_gem->relocs = NULL;
free (bo_gem->reloc_target_bo);
bo_gem->reloc_target_bo = NULL;
return 1;
}
return 0;
}
@ -564,6 +580,7 @@ retry:
bo_gem->validate_index = -1;
bo_gem->reloc_tree_fences = 0;
bo_gem->used_as_reloc_target = 0;
bo_gem->has_error = 0;
bo_gem->tiling_mode = I915_TILING_NONE;
bo_gem->swizzle_mode = I915_BIT_6_SWIZZLE_NONE;
bo_gem->reusable = 1;
@ -1178,10 +1195,22 @@ drm_intel_gem_bo_emit_reloc(drm_intel_bo *bo, uint32_t offset,
drm_intel_bo_gem *target_bo_gem = (drm_intel_bo_gem *) target_bo;
pthread_mutex_lock(&bufmgr_gem->lock);
if (bo_gem->has_error) {
pthread_mutex_unlock(&bufmgr_gem->lock);
return -ENOMEM;
}
if (target_bo_gem->has_error) {
bo_gem->has_error = 1;
pthread_mutex_unlock(&bufmgr_gem->lock);
return -ENOMEM;
}
/* Create a new relocation list if needed */
if (bo_gem->relocs == NULL)
drm_intel_setup_reloc_list(bo);
if (bo_gem->relocs == NULL && drm_intel_setup_reloc_list(bo)) {
pthread_mutex_unlock(&bufmgr_gem->lock);
return -ENOMEM;
}
/* Check overflow */
assert(bo_gem->reloc_count < bufmgr_gem->max_relocs);
@ -1268,9 +1297,13 @@ drm_intel_gem_bo_exec(drm_intel_bo *bo, int used,
drm_clip_rect_t * cliprects, int num_cliprects, int DR4)
{
drm_intel_bufmgr_gem *bufmgr_gem = (drm_intel_bufmgr_gem *) bo->bufmgr;
drm_intel_bo_gem *bo_gem = (drm_intel_bo_gem *) bo;
struct drm_i915_gem_execbuffer execbuf;
int ret, i;
if (bo_gem->has_error)
return -ENOMEM;
pthread_mutex_lock(&bufmgr_gem->lock);
/* Update indices and set up the validate list. */
drm_intel_gem_bo_process_reloc(bo);