aboutsummaryrefslogtreecommitdiffstatshomepage
path: root/drivers
diff options
context:
space:
mode:
authorRob Clark <robdclark@chromium.org>2023-02-18 12:35:04 -0800
committerRob Clark <robdclark@chromium.org>2023-03-28 13:39:02 -0700
commitd7d5a21dd6b4706c04fbba5d25db8da5f25aab68 (patch)
tree2bc415b6a11b1b9a440a07b15439c96af75f1543 /drivers
parentdma-buf/fence-chain: Add fence deadline support (diff)
downloadwireguard-linux-d7d5a21dd6b4706c04fbba5d25db8da5f25aab68.tar.xz
wireguard-linux-d7d5a21dd6b4706c04fbba5d25db8da5f25aab68.zip
dma-buf/dma-resv: Add a way to set fence deadline
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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/dma-buf/dma-resv.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/dma-buf/dma-resv.c b/drivers/dma-buf/dma-resv.c
index 1c76aed8e262..2a594b754af1 100644
--- a/drivers/dma-buf/dma-resv.c
+++ b/drivers/dma-buf/dma-resv.c
@@ -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