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[1/2] rust: helpers: Add bindings/wrappers for dma_resv

Message ID 20250324-gpuvm-v1-1-7f8213eebb56@collabora.com (mailing list archive)
State New
Headers show
Series Add a Rust GPUVM abstraction | expand

Commit Message

Daniel Almeida March 24, 2025, 3:13 p.m. UTC 
From: Asahi Lina <lina@asahilina.net>

This is just for basic usage in the DRM shmem abstractions for implied
locking, not intended as a full DMA Reservation abstraction yet.

Signed-off-by: Asahi Lina <lina@asahilina.net>
---
 rust/bindings/bindings_helper.h |  4 +++-
 rust/helpers/dma-resv.c         | 13 +++++++++++++
 rust/helpers/helpers.c          |  1 +
 3 files changed, 17 insertions(+), 1 deletion(-)

Comments

Miguel Ojeda March 24, 2025, 6:43 p.m. UTC | #1 
On Mon, Mar 24, 2025 at 4:14 PM Daniel Almeida
<daniel.almeida@collabora.com> wrote:
>
> -const blk_features_t RUST_CONST_HELPER_BLK_FEAT_ROTATIONAL = BLK_FEAT_ROTATIONAL;
> +const blk_features_t RUST_CONST_HELPER_BLK_FEAT_ROTATIONAL =
> +       BLK_FEAT_ROTATIONAL;

Spurious change?

Ah, this is probably the result of applying `clang-format`, which is
something that perhaps we should consider, but separately... :)

Cheers,
Miguel
diff mbox series

Patch

diff --git a/rust/bindings/bindings_helper.h b/rust/bindings/bindings_helper.h
index e6020ba5b00237a08402fbd609c7fba27b970dd9..53111b5b35588541eca05e574a8d24cdafbf1dd6 100644
--- a/rust/bindings/bindings_helper.h
+++ b/rust/bindings/bindings_helper.h
@@ -18,6 +18,7 @@ 
 #include <linux/blkdev.h>
 #include <linux/cred.h>
 #include <linux/device/faux.h>
+#include <linux/dma-resv.h>
 #include <linux/errname.h>
 #include <linux/ethtool.h>
 #include <linux/file.h>
@@ -53,5 +54,6 @@  const gfp_t RUST_CONST_HELPER_GFP_NOWAIT = GFP_NOWAIT;
 const gfp_t RUST_CONST_HELPER___GFP_ZERO = __GFP_ZERO;
 const gfp_t RUST_CONST_HELPER___GFP_HIGHMEM = ___GFP_HIGHMEM;
 const gfp_t RUST_CONST_HELPER___GFP_NOWARN = ___GFP_NOWARN;
-const blk_features_t RUST_CONST_HELPER_BLK_FEAT_ROTATIONAL = BLK_FEAT_ROTATIONAL;
+const blk_features_t RUST_CONST_HELPER_BLK_FEAT_ROTATIONAL =
+	BLK_FEAT_ROTATIONAL;
 const fop_flags_t RUST_CONST_HELPER_FOP_UNSIGNED_OFFSET = FOP_UNSIGNED_OFFSET;
diff --git a/rust/helpers/dma-resv.c b/rust/helpers/dma-resv.c
new file mode 100644
index 0000000000000000000000000000000000000000..05501cb814513b483afd0b7f220230d867863c2f
--- /dev/null
+++ b/rust/helpers/dma-resv.c
@@ -0,0 +1,13 @@ 
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/dma-resv.h>
+
+int rust_helper_dma_resv_lock(struct dma_resv *obj, struct ww_acquire_ctx *ctx)
+{
+	return dma_resv_lock(obj, ctx);
+}
+
+void rust_helper_dma_resv_unlock(struct dma_resv *obj)
+{
+	dma_resv_unlock(obj);
+}
diff --git a/rust/helpers/helpers.c b/rust/helpers/helpers.c
index 7a06d6bc48537248c8a3ec4243b37d8fb2b1cb26..c5e536d688bc35c7b348daa61e868c91a7bdbd23 100644
--- a/rust/helpers/helpers.c
+++ b/rust/helpers/helpers.c
@@ -14,6 +14,7 @@ 
 #include "build_bug.c"
 #include "cred.c"
 #include "device.c"
+#include "dma-resv.c"
 #include "drm.c"
 #include "err.c"
 #include "fs.c"