Hi Rob,
Am 20.07.21 um 17:07 schrieb Rob Clark:
From: Rob Clark <robdclark@xxxxxxxxxxxx>
Somehow we had neither ->wait() nor dma_fence_signal() calls, and no
one noticed. Oops.
I'm not sure if that is a good idea.
The dma_fence->wait() callback is pretty much deprecated and should not
be used any more.
What exactly do you need that for?
Regards,
Christian.
Note that this removes the !timeout case, which has not been used in
a long time.
Signed-off-by: Rob Clark <robdclark@xxxxxxxxxxxx>
---
drivers/gpu/drm/msm/msm_fence.c | 59 +++++++++++++++++++--------------
1 file changed, 34 insertions(+), 25 deletions(-)
diff --git a/drivers/gpu/drm/msm/msm_fence.c b/drivers/gpu/drm/msm/msm_fence.c
index cd59a5918038..8ee96b90ded6 100644
--- a/drivers/gpu/drm/msm/msm_fence.c
+++ b/drivers/gpu/drm/msm/msm_fence.c
@@ -38,11 +38,10 @@ static inline bool fence_completed(struct msm_fence_context *fctx, uint32_t fenc
return (int32_t)(fctx->completed_fence - fence) >= 0;
}
-/* legacy path for WAIT_FENCE ioctl: */
-int msm_wait_fence(struct msm_fence_context *fctx, uint32_t fence,
- ktime_t *timeout, bool interruptible)
+static signed long wait_fence(struct msm_fence_context *fctx, uint32_t fence,
+ signed long remaining_jiffies, bool interruptible)
{
- int ret;
+ signed long ret;
if (fence > fctx->last_fence) {
DRM_ERROR_RATELIMITED("%s: waiting on invalid fence: %u (of %u)\n",
@@ -50,33 +49,34 @@ int msm_wait_fence(struct msm_fence_context *fctx, uint32_t fence,
return -EINVAL;
}
- if (!timeout) {
- /* no-wait: */
- ret = fence_completed(fctx, fence) ? 0 : -EBUSY;
+ if (interruptible) {
+ ret = wait_event_interruptible_timeout(fctx->event,
+ fence_completed(fctx, fence),
+ remaining_jiffies);
} else {
- unsigned long remaining_jiffies = timeout_to_jiffies(timeout);
-
- if (interruptible)
- ret = wait_event_interruptible_timeout(fctx->event,
- fence_completed(fctx, fence),
- remaining_jiffies);
- else
- ret = wait_event_timeout(fctx->event,
- fence_completed(fctx, fence),
- remaining_jiffies);
-
- if (ret == 0) {
- DBG("timeout waiting for fence: %u (completed: %u)",
- fence, fctx->completed_fence);
- ret = -ETIMEDOUT;
- } else if (ret != -ERESTARTSYS) {
- ret = 0;
- }
+ ret = wait_event_timeout(fctx->event,
+ fence_completed(fctx, fence),
+ remaining_jiffies);
+ }
+
+ if (ret == 0) {
+ DBG("timeout waiting for fence: %u (completed: %u)",
+ fence, fctx->completed_fence);
+ ret = -ETIMEDOUT;
+ } else if (ret != -ERESTARTSYS) {
+ ret = 0;
}
return ret;
}
+/* legacy path for WAIT_FENCE ioctl: */
+int msm_wait_fence(struct msm_fence_context *fctx, uint32_t fence,
+ ktime_t *timeout, bool interruptible)
+{
+ return wait_fence(fctx, fence, timeout_to_jiffies(timeout), interruptible);
+}
+
/* called from workqueue */
void msm_update_fence(struct msm_fence_context *fctx, uint32_t fence)
{
@@ -114,10 +114,19 @@ static bool msm_fence_signaled(struct dma_fence *fence)
return fence_completed(f->fctx, f->base.seqno);
}
+static signed long msm_fence_wait(struct dma_fence *fence, bool intr,
+ signed long timeout)
+{
+ struct msm_fence *f = to_msm_fence(fence);
+
+ return wait_fence(f->fctx, fence->seqno, timeout, intr);
+}
+
static const struct dma_fence_ops msm_fence_ops = {
.get_driver_name = msm_fence_get_driver_name,
.get_timeline_name = msm_fence_get_timeline_name,
.signaled = msm_fence_signaled,
+ .wait = msm_fence_wait,
};
struct dma_fence *
