winsys/amdgpu: build handles and flags list late on submit thread

This probably has only minor performance effects, but it simplifies some
subsequent code slightly.

Ideally, it could also be used to simplify the handling of slab buffers
in the same way, but unfortunately that's not possible as long as we need
indices for relocations.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>

src/gallium/winsys/amdgpu/drm/amdgpu_cs.c

@@ -325,33 +325,21 @@ amdgpu_do_add_real_buffer(struct amdgpu_cs_context *cs, struct amdgpu_winsys_bo
       unsigned new_max =
          MAX2(cs->max_real_buffers + 16, (unsigned)(cs->max_real_buffers * 1.3));
       struct amdgpu_cs_buffer *new_buffers;
-      amdgpu_bo_handle *new_handles;
-      uint8_t *new_flags;
 
       new_buffers = MALLOC(new_max * sizeof(*new_buffers));
-      new_handles = MALLOC(new_max * sizeof(*new_handles));
-      new_flags = MALLOC(new_max * sizeof(*new_flags));
 
-      if (!new_buffers || !new_handles || !new_flags) {
+      if (!new_buffers) {
          fprintf(stderr, "amdgpu_do_add_buffer: allocation failed\n");
          FREE(new_buffers);
-         FREE(new_handles);
-         FREE(new_flags);
          return -1;
       }
 
       memcpy(new_buffers, cs->real_buffers, cs->num_real_buffers * sizeof(*new_buffers));
-      memcpy(new_handles, cs->handles, cs->num_real_buffers * sizeof(*new_handles));
-      memcpy(new_flags, cs->flags, cs->num_real_buffers * sizeof(*new_flags));
 
       FREE(cs->real_buffers);
-      FREE(cs->handles);
-      FREE(cs->flags);
 
       cs->max_real_buffers = new_max;
       cs->real_buffers = new_buffers;
-      cs->handles = new_handles;
-      cs->flags = new_flags;
    }
 
    idx = cs->num_real_buffers;
@@ -359,8 +347,6 @@ amdgpu_do_add_real_buffer(struct amdgpu_cs_context *cs, struct amdgpu_winsys_bo
 
    memset(buffer, 0, sizeof(*buffer));
    amdgpu_winsys_bo_reference(&buffer->bo, bo);
-   cs->handles[idx] = bo->bo;
-   cs->flags[idx] = 0;
    p_atomic_inc(&bo->num_cs_references);
    cs->num_real_buffers++;
 
@@ -482,7 +468,6 @@ static unsigned amdgpu_cs_add_buffer(struct radeon_winsys_cs *rcs,
    buffer = &cs->real_buffers[index];
    buffer->u.real.priority_usage |= 1llu << priority;
    buffer->usage |= usage;
-   cs->flags[index] = MAX2(cs->flags[index], priority / 4);
 
    cs->last_added_bo = bo;
    cs->last_added_bo_index = index;
@@ -1064,10 +1049,34 @@ void amdgpu_cs_submit_ib(void *job, int thread_index)
       free(handles);
       mtx_unlock(&ws->global_bo_list_lock);
    } else {
+      if (cs->max_real_submit < cs->num_real_buffers) {
+         FREE(cs->handles);
+         FREE(cs->flags);
+
+         cs->handles = MALLOC(sizeof(*cs->handles) * cs->num_real_buffers);
+         cs->flags = MALLOC(sizeof(*cs->flags) * cs->num_real_buffers);
+
+         if (!cs->handles || !cs->flags) {
+            cs->max_real_submit = 0;
+            r = -ENOMEM;
+            goto bo_list_error;
+         }
+      }
+
+      for (i = 0; i < cs->num_real_buffers; ++i) {
+         struct amdgpu_cs_buffer *buffer = &cs->real_buffers[i];
+
+         assert(buffer->u.real.priority_usage != 0);
+
+         cs->handles[i] = buffer->bo->bo;
+         cs->flags[i] = (util_last_bit64(buffer->u.real.priority_usage) - 1) / 4;
+      }
+
       r = amdgpu_bo_list_create(ws->dev, cs->num_real_buffers,
                                 cs->handles, cs->flags,
                                 &cs->request.resources);
    }
+bo_list_error:
 
    if (r) {
       fprintf(stderr, "amdgpu: buffer list creation failed (%d)\n", r);

src/gallium/winsys/amdgpu/drm/amdgpu_cs.h

@@ -84,9 +84,11 @@ struct amdgpu_cs_context {
    /* Buffers. */
    unsigned                    max_real_buffers;
    unsigned                    num_real_buffers;
+   struct amdgpu_cs_buffer     *real_buffers;
+
+   unsigned                    max_real_submit;
    amdgpu_bo_handle            *handles;
    uint8_t                     *flags;
-   struct amdgpu_cs_buffer     *real_buffers;
 
    unsigned                    num_slab_buffers;
    unsigned                    max_slab_buffers;