[PATCH v6 09/10] drm/qxl: simplify qxl_fence_wait
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DORMANTno replies
REVIEWED: 1 (1M)
From: Gerd Hoffmann <kraxel@redhat.com>
Date: 2021-02-04 15:05:39
Also in:
dri-devel, lkml
Subsystem:
drm driver for qxl virtual gpu, drm drivers, drm drivers and misc gpu patches, the rest · Maintainers:
Dave Airlie, Gerd Hoffmann, David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Linus Torvalds
Status: Reviewed.
1 review trailer (1 from subsystem maintainers).
Now that we have the new release_event wait queue we can just use that in qxl_fence_wait() and simplify the code alot. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Thomas Zimmermann <tzimmermann@suse.de> --- drivers/gpu/drm/qxl/qxl_release.c | 44 +++---------------------------- 1 file changed, 4 insertions(+), 40 deletions(-)
diff --git a/drivers/gpu/drm/qxl/qxl_release.c b/drivers/gpu/drm/qxl/qxl_release.c
index 43a5436853b7..6ed673d75f9f 100644
--- a/drivers/gpu/drm/qxl/qxl_release.c
+++ b/drivers/gpu/drm/qxl/qxl_release.c@@ -58,54 +58,18 @@ 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; - -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. - */ + if (!wait_event_timeout(qdev->release_event, + dma_fence_is_signaled(fence), + timeout)) + return 0; signaled: cur = jiffies;
--
2.29.2
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