提交 307dc25b 编写于 作者: C Chris Wilson

drm/i915: Simplify do_idling() (Ironlake vt-d w/a)

Now that we pass along the expected interruptible nature for the
wait-for-idle, we do not need to modify the global
i915->mm.interruptible for this single call. (Only the immediate call to
i915_gem_wait_for_idle() takes the interruptible status as the other
action, dma_map_sg(), is independent of i915.ko)
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: NJoonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1470388464-28458-7-git-send-email-chris@chris-wilson.co.uk
上级 dcff85c8
......@@ -2241,31 +2241,6 @@ static bool needs_idle_maps(struct drm_i915_private *dev_priv)
return false;
}
static bool do_idling(struct drm_i915_private *dev_priv)
{
struct i915_ggtt *ggtt = &dev_priv->ggtt;
bool ret = dev_priv->mm.interruptible;
if (unlikely(ggtt->do_idle_maps)) {
dev_priv->mm.interruptible = false;
if (i915_gem_wait_for_idle(dev_priv, false)) {
DRM_ERROR("Failed to wait for idle; VT'd may hang.\n");
/* Wait a bit, in hopes it avoids the hang */
udelay(10);
}
}
return ret;
}
static void undo_idling(struct drm_i915_private *dev_priv, bool interruptible)
{
struct i915_ggtt *ggtt = &dev_priv->ggtt;
if (unlikely(ggtt->do_idle_maps))
dev_priv->mm.interruptible = interruptible;
}
void i915_check_and_clear_faults(struct drm_i915_private *dev_priv)
{
struct intel_engine_cs *engine;
......@@ -2713,14 +2688,18 @@ void i915_gem_gtt_finish_object(struct drm_i915_gem_object *obj)
{
struct drm_device *dev = obj->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
bool interruptible;
struct i915_ggtt *ggtt = &dev_priv->ggtt;
interruptible = do_idling(dev_priv);
if (unlikely(ggtt->do_idle_maps)) {
if (i915_gem_wait_for_idle(dev_priv, false)) {
DRM_ERROR("Failed to wait for idle; VT'd may hang.\n");
/* Wait a bit, in hopes it avoids the hang */
udelay(10);
}
}
dma_unmap_sg(&dev->pdev->dev, obj->pages->sgl, obj->pages->nents,
PCI_DMA_BIDIRECTIONAL);
undo_idling(dev_priv, interruptible);
}
static void i915_gtt_color_adjust(struct drm_mm_node *node,
......
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