On Wed Jan 21, 2026 at 11:31 AM GMT, Alice Ryhl wrote: > From: Asahi Lina <[email protected]> > > 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 <[email protected]> > Signed-off-by: Daniel Almeida <[email protected]> > Reviewed-by: Alice Ryhl <[email protected]> > Signed-off-by: Lyude Paul <[email protected]> > Reviewed-by: Janne Grunau <[email protected]> > Signed-off-by: Alice Ryhl <[email protected]> > --- > Taken from: > https://lore.kernel.org/all/[email protected]/ > --- > 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 > dd60a5c6b142ec2c5fd6df80279ab6813163791c..ed80dd8088bc60c67b02f7666e602e33158bb962 > 100644 > --- a/rust/bindings/bindings_helper.h > +++ b/rust/bindings/bindings_helper.h > @@ -52,6 +52,7 @@ > #include <linux/device/faux.h> > #include <linux/dma-direction.h> > #include <linux/dma-mapping.h> > +#include <linux/dma-resv.h> > #include <linux/errname.h> > #include <linux/ethtool.h> > #include <linux/fdtable.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); > +}
This is missing __rust_helper Best, Gary > diff --git a/rust/helpers/helpers.c b/rust/helpers/helpers.c > index > 0943d589b7578d3c0e207937f63a5e02719c6146..aae78c938b0b5848b1740fb3f2dc4b7f93b1a760 > 100644 > --- a/rust/helpers/helpers.c > +++ b/rust/helpers/helpers.c > @@ -25,6 +25,7 @@ > #include "cred.c" > #include "device.c" > #include "dma.c" > +#include "dma-resv.c" > #include "drm.c" > #include "drm_gpuvm.c" > #include "err.c"
