Am 17.02.2017 um 19:35 schrieb Chris Wilson:
Indicate that the fence array will be signaled on the first completion
(signal-on-any mode) as opposed to waiting for all to be signaled.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Sumit Semwal <sumit.semwal@xxxxxxxxxx>
Cc: Gustavo Padovan <gustavo@xxxxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
Cc: "Christian König" <christian.koenig@xxxxxxx>
Reviewed-by: Christian König <christian.koenig@xxxxxxx>
---
drivers/dma-buf/dma-fence-array.c | 3 +++
include/linux/dma-fence-array.h | 4 ++++
2 files changed, 7 insertions(+)
diff --git a/drivers/dma-buf/dma-fence-array.c b/drivers/dma-buf/dma-fence-array.c
index 67eb7c8fb88c..8c48402a2daa 100644
--- a/drivers/dma-buf/dma-fence-array.c
+++ b/drivers/dma-buf/dma-fence-array.c
@@ -137,6 +137,9 @@ struct dma_fence_array *dma_fence_array_create(int num_fences,
dma_fence_init(&array->base, &dma_fence_array_ops, &array->lock,
context, seqno);
+ if (num_fences > 1 && signal_on_any)
+ __set_bit(DMA_FENCE_ARRAY_SIGNAL_ANY, &array->base.flags);
+
array->num_fences = num_fences;
atomic_set(&array->num_pending, signal_on_any ? 1 : num_fences);
array->fences = fences;
diff --git a/include/linux/dma-fence-array.h b/include/linux/dma-fence-array.h
index 5900945f962d..4270d33d05b3 100644
--- a/include/linux/dma-fence-array.h
+++ b/include/linux/dma-fence-array.h
@@ -49,6 +49,10 @@ struct dma_fence_array {
struct dma_fence **fences;
};
+enum {
+ DMA_FENCE_ARRAY_SIGNAL_ANY = DMA_FENCE_FLAG_USER_BITS,
+};
+
extern const struct dma_fence_ops dma_fence_array_ops;
/**
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