| Message ID | 20230317121213.93991-5-mcanal@igalia.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Rust version of the VGEM driver | expand |
diff --git a/rust/kernel/dma_fence.rs b/rust/kernel/dma_fence.rs index 176e6d250e6c..94fead520274 100644 --- a/rust/kernel/dma_fence.rs +++ b/rust/kernel/dma_fence.rs @@ -60,6 +60,13 @@ pub trait RawDmaFence: crate::private::Sealed { } } + /// Return the seqno from this fence + fn seqno(&self) -> u64 { + // SAFETY: We hold a reference to a dma_fence and every dma_fence holds + // a seqno. + unsafe { (*self.raw()).seqno } + } + /// Signal completion of this fence fn signal(&self) -> Result { to_result(unsafe { bindings::dma_fence_signal(self.raw()) })
Each fence has a linear increasing sequence number inside the execution context, that can be used to decide which fence would be signaled later. So, expose this attribute to the Rust drivers through a method. Signed-off-by: Maíra Canal <mcanal@igalia.com> --- rust/kernel/dma_fence.rs | 7 +++++++ 1 file changed, 7 insertions(+)