diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_context.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_context.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_context.h b/drivers/gpu/drm/i915/i915_gem_context.h index 4af2ab94558b..82c99ba92ad3 100644 --- a/drivers/gpu/drm/i915/i915_gem_context.h +++ b/drivers/gpu/drm/i915/i915_gem_context.h @@ -143,6 +143,32 @@ struct i915_gem_context { /** ggtt_offset_bias: placement restriction for context objects */ u32 ggtt_offset_bias; + struct i915_gem_context_vma_lut { + /** ht_size: last request size to allocate the hashtable for. */ + unsigned int ht_size; +#define I915_CTX_RESIZE_IN_PROGRESS BIT(0) + /** ht_bits: real log2(size) of hashtable. */ + unsigned int ht_bits; + /** ht_count: current number of entries inside the hashtable */ + unsigned int ht_count; + + /** ht: the array of buckets comprising the simple hashtable */ + struct hlist_head *ht; + + /** + * resize: After an execbuf completes, we check the load factor + * of the hashtable. If the hashtable is too full, or too empty, + * we schedule a task to resize the hashtable. During the + * resize, the entries are moved between different buckets and + * so we cannot simultaneously read the hashtable as it is + * being resized (unlike rhashtable). Therefore we treat the + * active work as a strong barrier, pausing a subsequent + * execbuf to wait for the resize worker to complete, if + * required. + */ + struct work_struct resize; + } vma_lut; + /** engine: per-engine logical HW state */ struct intel_context { struct i915_vma *state; |