linux-kernel - Re: [PATCH v2 1/2] rust: helpers: Add bindings/wrappers for dma

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Message-ID: <aAfJadjG0RACO1-W@blossom>
Date: Tue, 22 Apr 2025 12:52:57 -0400
From: Alyssa Rosenzweig <alyssa@...enzweig.io>
To: Daniel Almeida <daniel.almeida@...labora.com>
Cc: Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>,
	Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Benno Lossin <benno.lossin@...ton.me>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Alice Ryhl <aliceryhl@...gle.com>, Trevor Gross <tmgross@...ch.edu>,
	Sumit Semwal <sumit.semwal@...aro.org>,
	Christian König <christian.koenig@....com>,
	Boris Brezillon <boris.brezillon@...labora.com>,
	Danilo Krummrich <dakr@...nel.org>, Lyude Paul <lyude@...hat.com>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
	linux-kernel@...r.kernel.org, rust-for-linux@...r.kernel.org,
	dri-devel@...ts.freedesktop.org, Asahi Lina <lina@...hilina.net>
Subject: Re: [PATCH v2 1/2] rust: helpers: Add bindings/wrappers for dma_resv

This needs your Signed-off-by too as you are the submitter

Le Tue, Apr 22, 2025 at 01:41:52PM -0300, Daniel Almeida a écrit :
> From: Asahi Lina <lina@...hilina.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@...hilina.net>
> ---
>  rust/bindings/bindings_helper.h |  1 +
>  rust/helpers/dma-resv.c         | 13 +++++++++++++
>  rust/helpers/helpers.c          |  1 +
>  3 files changed, 15 insertions(+)
> 
> diff --git a/rust/bindings/bindings_helper.h b/rust/bindings/bindings_helper.h
> index e6020ba5b00237a08402fbd609c7fba27b970dd9..68d7be498a6d523797e54212d6c23ff4d8f2e92d 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>
> 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"
> 
> -- 
> 2.49.0
>