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Code Issues Releases Wiki Activity

drm/i915: Take the handle idr spinlock once for looking up the exec objects 

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Chris Wilson 2013-01-08 10:53:14 +00:00 committed by Daniel Vetter
parent 419fa72a19
commit 3b96eff447
1 changed files with 46 additions and 40 deletions
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86
drivers/gpu/drm/i915/i915_gem_execbuffer.c
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@ -69,6 +69,46 @@ eb_add_object(struct eb_objects *eb, struct drm_i915_gem_object *obj)
&eb->buckets[obj->exec_handle & eb->and]);
}
static int
eb_lookup_objects(struct eb_objects *eb,
struct drm_i915_gem_exec_object2 *exec,
int count,
struct drm_file *file,
struct list_head *objects)
{
int i;
spin_lock(&file->table_lock);
for (i = 0; i < count; i++) {
struct drm_i915_gem_object *obj;
obj = to_intel_bo(idr_find(&file->object_idr, exec[i].handle));
if (obj == NULL) {
spin_unlock(&file->table_lock);
DRM_DEBUG("Invalid object handle %d at index %d\n",
exec[i].handle, i);
return -ENOENT;
}
if (!list_empty(&obj->exec_list)) {
spin_unlock(&file->table_lock);
DRM_DEBUG("Object %p [handle %d, index %d] appears more than once in object list\n",
obj, exec[i].handle, i);
return -EINVAL;
}
drm_gem_object_reference(&obj->base);
list_add_tail(&obj->exec_list, objects);
obj->exec_handle = exec[i].handle;
obj->exec_entry = &exec[i];
eb_add_object(eb, obj);
}
spin_unlock(&file->table_lock);
return 0;
}
static struct drm_i915_gem_object *
eb_get_object(struct eb_objects *eb, unsigned long handle)
{
@ -550,21 +590,9 @@ i915_gem_execbuffer_relocate_slow(struct drm_device *dev,
/* reacquire the objects */
eb_reset(eb);
for (i = 0; i < count; i++) {
obj = to_intel_bo(drm_gem_object_lookup(dev, file,
exec[i].handle));
if (&obj->base == NULL) {
DRM_DEBUG("Invalid object handle %d at index %d\n",
exec[i].handle, i);
ret = -ENOENT;
goto err;
}
list_add_tail(&obj->exec_list, objects);
obj->exec_handle = exec[i].handle;
obj->exec_entry = &exec[i];
eb_add_object(eb, obj);
}
ret = eb_lookup_objects(eb, exec, count, file, objects);
if (ret)
goto err;
ret = i915_gem_execbuffer_reserve(ring, file, objects);
if (ret)
@ -872,31 +900,9 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data,
/* Look up object handles */
INIT_LIST_HEAD(&objects);
for (i = 0; i < args->buffer_count; i++) {
struct drm_i915_gem_object *obj;
obj = to_intel_bo(drm_gem_object_lookup(dev, file,
exec[i].handle));
if (&obj->base == NULL) {
DRM_DEBUG("Invalid object handle %d at index %d\n",
exec[i].handle, i);
/* prevent error path from reading uninitialized data */
ret = -ENOENT;
goto err;
}
if (!list_empty(&obj->exec_list)) {
DRM_DEBUG("Object %p [handle %d, index %d] appears more than once in object list\n",
obj, exec[i].handle, i);
ret = -EINVAL;
goto err;
}
list_add_tail(&obj->exec_list, &objects);
obj->exec_handle = exec[i].handle;
obj->exec_entry = &exec[i];
eb_add_object(eb, obj);
}
ret = eb_lookup_objects(eb, exec, args->buffer_count, file, &objects);
if (ret)
goto err;
/* take note of the batch buffer before we might reorder the lists */
batch_obj = list_entry(objects.prev,