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drm/i915: Retry execbuffer pinning after clearing the GTT

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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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45
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)
{
@ -1173,6 +1186,7 @@ i915_gem_object_bind_to_gtt(struct drm_gem_object *obj, unsigned alignment)
ret = i915_gem_evict_something(dev);
if (ret != 0) {
if (ret != -ERESTARTSYS)
DRM_ERROR("Failed to evict a buffer %d\n", ret);
return ret;
}
@ -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;
}
}
/* 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) {
DRM_ERROR("object bind and relocate failed %d\n", ret);
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 */