dma-buf/dma-resv: Add a way to set fence deadline
authorRob Clark <robdclark@chromium.org>
Sat, 18 Feb 2023 20:35:04 +0000 (12:35 -0800)
committerRob Clark <robdclark@chromium.org>
Tue, 28 Mar 2023 20:39:02 +0000 (13:39 -0700)
Add a way to set a deadline on remaining resv fences according to the
requested usage.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Christian König <christian.koenig@amd.com>
drivers/dma-buf/dma-resv.c
include/linux/dma-resv.h

index 1c76aed..2a594b7 100644 (file)
@@ -684,6 +684,28 @@ long dma_resv_wait_timeout(struct dma_resv *obj, enum dma_resv_usage usage,
 }
 EXPORT_SYMBOL_GPL(dma_resv_wait_timeout);
 
+/**
+ * dma_resv_set_deadline - Set a deadline on reservation's objects fences
+ * @obj: the reservation object
+ * @usage: controls which fences to include, see enum dma_resv_usage.
+ * @deadline: the requested deadline (MONOTONIC)
+ *
+ * May be called without holding the dma_resv lock.  Sets @deadline on
+ * all fences filtered by @usage.
+ */
+void dma_resv_set_deadline(struct dma_resv *obj, enum dma_resv_usage usage,
+                          ktime_t deadline)
+{
+       struct dma_resv_iter cursor;
+       struct dma_fence *fence;
+
+       dma_resv_iter_begin(&cursor, obj, usage);
+       dma_resv_for_each_fence_unlocked(&cursor, fence) {
+               dma_fence_set_deadline(fence, deadline);
+       }
+       dma_resv_iter_end(&cursor);
+}
+EXPORT_SYMBOL_GPL(dma_resv_set_deadline);
 
 /**
  * dma_resv_test_signaled - Test if a reservation object's fences have been
index 0637659..8d0e34d 100644 (file)
@@ -479,6 +479,8 @@ int dma_resv_get_singleton(struct dma_resv *obj, enum dma_resv_usage usage,
 int dma_resv_copy_fences(struct dma_resv *dst, struct dma_resv *src);
 long dma_resv_wait_timeout(struct dma_resv *obj, enum dma_resv_usage usage,
                           bool intr, unsigned long timeout);
+void dma_resv_set_deadline(struct dma_resv *obj, enum dma_resv_usage usage,
+                          ktime_t deadline);
 bool dma_resv_test_signaled(struct dma_resv *obj, enum dma_resv_usage usage);
 void dma_resv_describe(struct dma_resv *obj, struct seq_file *seq);