Hi Christian,
After applying the patch, the below android CTS cases can pass:
CtsDeqpTestCases dEQP-EGL.functional.get_frame_timestamps*
Thanks for taking care of this.
Tested-by: Jessie Hao <juan.hao@xxxxxxx>
-----Original Message-----
From: Christian König <ckoenig.leichtzumerken@xxxxxxxxx>
Sent: Wednesday, June 21, 2023 3:32 PM
To: Jessie Hao <juan.hao@xxxxxxx>; dri-devel@xxxxxxxxxxxxxxxxxxxxx
Cc: Christian König <christian.koenig@xxxxxxx>; stable@xxxxxxxxxxxxxxx
Subject: [PATCH] dma-buf: keep the signaling time of merged fences
Some Android CTS is testing for that.
Signed-off-by: Christian König <christian.koenig@xxxxxxx>
CC: stable@xxxxxxxxxxxxxxx
---
drivers/dma-buf/dma-fence-unwrap.c | 11 +++++++++--
drivers/dma-buf/dma-fence.c | 5 +++--
drivers/gpu/drm/drm_syncobj.c | 2 +-
include/linux/dma-fence.h | 2 +-
4 files changed, 14 insertions(+), 6 deletions(-)
diff --git a/drivers/dma-buf/dma-fence-unwrap.c b/drivers/dma-buf/dma-fence-unwrap.c
index 7002bca792ff..06eb91306c01 100644
--- a/drivers/dma-buf/dma-fence-unwrap.c
+++ b/drivers/dma-buf/dma-fence-unwrap.c
@@ -66,18 +66,25 @@ struct dma_fence *__dma_fence_unwrap_merge(unsigned int num_fences, {
struct dma_fence_array *result;
struct dma_fence *tmp, **array;
+ ktime_t timestamp;
unsigned int i;
size_t count;
count = 0;
+ timestamp = ns_to_ktime(0);
for (i = 0; i < num_fences; ++i) {
- dma_fence_unwrap_for_each(tmp, &iter[i], fences[i])
+ dma_fence_unwrap_for_each(tmp, &iter[i], fences[i]) {
if (!dma_fence_is_signaled(tmp))
++count;
+ else if (test_bit(DMA_FENCE_FLAG_TIMESTAMP_BIT,
+ &tmp->flags) &&
+ ktime_after(tmp->timestamp, timestamp))
+ timestamp = tmp->timestamp;
+ }
}
if (count == 0)
- return dma_fence_get_stub();
+ return dma_fence_allocate_private_stub(timestamp);
array = kmalloc_array(count, sizeof(*array), GFP_KERNEL);
if (!array)
diff --git a/drivers/dma-buf/dma-fence.c b/drivers/dma-buf/dma-fence.c index f177c56269bb..ad076f208760 100644
--- a/drivers/dma-buf/dma-fence.c
+++ b/drivers/dma-buf/dma-fence.c
@@ -150,10 +150,11 @@ EXPORT_SYMBOL(dma_fence_get_stub);
/**
* dma_fence_allocate_private_stub - return a private, signaled fence
+ * @timestamp: timestamp when the fence was signaled
*
* Return a newly allocated and signaled stub fence.
*/
-struct dma_fence *dma_fence_allocate_private_stub(void)
+struct dma_fence *dma_fence_allocate_private_stub(ktime_t timestamp)
{
struct dma_fence *fence;
@@ -169,7 +170,7 @@ struct dma_fence *dma_fence_allocate_private_stub(void)
set_bit(DMA_FENCE_FLAG_ENABLE_SIGNAL_BIT,
&fence->flags);
- dma_fence_signal(fence);
+ dma_fence_signal_timestamp(fence, timestamp);
return fence;
}
diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c index 0c2be8360525..04589a35eb09 100644
--- a/drivers/gpu/drm/drm_syncobj.c
+++ b/drivers/gpu/drm/drm_syncobj.c
@@ -353,7 +353,7 @@ EXPORT_SYMBOL(drm_syncobj_replace_fence);
*/
static int drm_syncobj_assign_null_handle(struct drm_syncobj *syncobj) {
- struct dma_fence *fence = dma_fence_allocate_private_stub();
+ struct dma_fence *fence =
+ dma_fence_allocate_private_stub(ktime_get());
if (IS_ERR(fence))
return PTR_ERR(fence);
diff --git a/include/linux/dma-fence.h b/include/linux/dma-fence.h index d54b595a0fe0..0d678e9a7b24 100644
--- a/include/linux/dma-fence.h
+++ b/include/linux/dma-fence.h
@@ -606,7 +606,7 @@ static inline signed long dma_fence_wait(struct dma_fence *fence, bool intr) void dma_fence_set_deadline(struct dma_fence *fence, ktime_t deadline);
struct dma_fence *dma_fence_get_stub(void); -struct dma_fence *dma_fence_allocate_private_stub(void);
+struct dma_fence *dma_fence_allocate_private_stub(ktime_t timestamp);
u64 dma_fence_context_alloc(unsigned num);
extern const struct dma_fence_ops dma_fence_array_ops;
--
2.34.1
