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drm/i915: Retry execbuffer pinning after clearing the GTT 

If we fail to pin all of the buffers in an execbuffer request, go through
and clear the GTT and try again to see if its just a matter of fragmentation

Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Keith Packard 2008-11-20 23:30:27 -08:00 committed by Dave Airlie
parent 646f0f6e43
commit ac94a962b2
1 changed files with 47 additions and 10 deletions
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57
drivers/gpu/drm/i915/i915_gem.c
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@ -1087,6 +1087,19 @@ i915_gem_evict_something(struct drm_device *dev)
return ret;
}
static int
i915_gem_evict_everything(struct drm_device *dev)
{
int ret;
for (;;) {
ret = i915_gem_evict_something(dev);
if (ret != 0)
break;
}
return ret;
}
static int
i915_gem_object_get_page_list(struct drm_gem_object *obj)
{
@ -1173,7 +1186,8 @@ i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, unsigned alignment)
ret = i915_gem_evict_something(dev);
if (ret != 0) {
DRM_ERROR("Failed to evict a buffer %d\n", ret);
if (ret != -ERESTARTSYS)
DRM_ERROR("Failed to evict a buffer %d\n", ret);
return ret;
}
goto search_free;
@ -1922,6 +1936,7 @@ i915_gem_execbuffer(struct drm_device *dev, void *data,
int ret, i, pinned = 0;
uint64_t exec_offset;
uint32_t seqno, flush_domains;
int pin_tries;
#if WATCH_EXEC
DRM_INFO("buffers_ptr %d buffer_count %d len %08x\n",
@ -1970,7 +1985,7 @@ i915_gem_execbuffer(struct drm_device *dev, void *data,
return -EBUSY;
}
/* Look up object handles and perform the relocations */
/* Look up object handles */
for (i = 0; i < args->buffer_count; i++) {
object_list[i] = drm_gem_object_lookup(dev, file_priv,
exec_list[i].handle);
@ -1980,17 +1995,39 @@ i915_gem_execbuffer(struct drm_device *dev, void *data,
ret = -EBADF;
goto err;
}
}
object_list[i]->pending_read_domains = 0;
object_list[i]->pending_write_domain = 0;
ret = i915_gem_object_pin_and_relocate(object_list[i],
file_priv,
&exec_list[i]);
if (ret) {
DRM_ERROR("object bind and relocate failed %d\n", ret);
/* Pin and relocate */
for (pin_tries = 0; ; pin_tries++) {
ret = 0;
for (i = 0; i < args->buffer_count; i++) {
object_list[i]->pending_read_domains = 0;
object_list[i]->pending_write_domain = 0;
ret = i915_gem_object_pin_and_relocate(object_list[i],
file_priv,
&exec_list[i]);
if (ret)
break;
pinned = i + 1;
}
/* success */
if (ret == 0)
break;
/* error other than GTT full, or we've already tried again */
if (ret != -ENOMEM || pin_tries >= 1) {
DRM_ERROR("Failed to pin buffers %d\n", ret);
goto err;
}
pinned = i + 1;
/* unpin all of our buffers */
for (i = 0; i < pinned; i++)
i915_gem_object_unpin(object_list[i]);
/* evict everyone we can from the aperture */
ret = i915_gem_evict_everything(dev);
if (ret)
goto err;
}
/* Set the pending read domains for the batch buffer to COMMAND */