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path: root/drivers/gpu/drm/qxl/qxl_release.c
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Diffstat (limited to 'drivers/gpu/drm/qxl/qxl_release.c')
-rw-r--r--drivers/gpu/drm/qxl/qxl_release.c50
1 files changed, 45 insertions, 5 deletions
diff --git a/drivers/gpu/drm/qxl/qxl_release.c b/drivers/gpu/drm/qxl/qxl_release.c
index 368d26da0..9febc8b73 100644
--- a/drivers/gpu/drm/qxl/qxl_release.c
+++ b/drivers/gpu/drm/qxl/qxl_release.c
@@ -58,16 +58,56 @@ static long qxl_fence_wait(struct dma_fence *fence, bool intr,
signed long timeout)
{
struct qxl_device *qdev;
+ struct qxl_release *release;
+ int count = 0, sc = 0;
+ bool have_drawable_releases;
unsigned long cur, end = jiffies + timeout;
qdev = container_of(fence->lock, struct qxl_device, release_lock);
+ release = container_of(fence, struct qxl_release, base);
+ have_drawable_releases = release->type == QXL_RELEASE_DRAWABLE;
- if (!wait_event_timeout(qdev->release_event,
- (dma_fence_is_signaled(fence) ||
- (qxl_io_notify_oom(qdev), 0)),
- timeout))
- return 0;
+retry:
+ sc++;
+
+ if (dma_fence_is_signaled(fence))
+ goto signaled;
+
+ qxl_io_notify_oom(qdev);
+
+ for (count = 0; count < 11; count++) {
+ if (!qxl_queue_garbage_collect(qdev, true))
+ break;
+
+ if (dma_fence_is_signaled(fence))
+ goto signaled;
+ }
+
+ if (dma_fence_is_signaled(fence))
+ goto signaled;
+
+ if (have_drawable_releases || sc < 4) {
+ if (sc > 2)
+ /* back off */
+ usleep_range(500, 1000);
+
+ if (time_after(jiffies, end))
+ return 0;
+
+ if (have_drawable_releases && sc > 300) {
+ DMA_FENCE_WARN(fence,
+ "failed to wait on release %llu after spincount %d\n",
+ fence->context & ~0xf0000000, sc);
+ goto signaled;
+ }
+ goto retry;
+ }
+ /*
+ * yeah, original sync_obj_wait gave up after 3 spins when
+ * have_drawable_releases is not set.
+ */
+signaled:
cur = jiffies;
if (time_after(cur, end))
return 0;