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| author | Tamir Duberstein <tamird@gmail.com> | 2025-04-23 09:54:38 -0400 |
|---|---|---|
| committer | Andreas Hindborg <a.hindborg@kernel.org> | 2025-05-01 11:37:59 +0200 |
| commit | 210b81578efbe5c5e7748e50d313e1a90b03df55 (patch) | |
| tree | 54f30a53c6484fad38bda0d6d98ba2bd3f987eea /rust/bindings | |
| parent | 1a4736c3d8394f5e64557a41b4b2b8d6dcd04622 (diff) | |
rust: xarray: Add an abstraction for XArray
`XArray` is an efficient sparse array of pointers. Add a Rust
abstraction for this type.
This implementation bounds the element type on `ForeignOwnable` and
requires explicit locking for all operations. Future work may leverage
RCU to enable lockless operation.
Inspired-by: Maíra Canal <mcanal@igalia.com>
Inspired-by: Asahi Lina <lina@asahilina.net>
Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Tamir Duberstein <tamird@gmail.com>
Link: https://lore.kernel.org/r/20250423-rust-xarray-bindings-v19-2-83cdcf11c114@gmail.com
Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
Diffstat (limited to 'rust/bindings')
| -rw-r--r-- | rust/bindings/bindings_helper.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/rust/bindings/bindings_helper.h b/rust/bindings/bindings_helper.h index ab37e1d35c70..e0bcd130b494 100644 --- a/rust/bindings/bindings_helper.h +++ b/rust/bindings/bindings_helper.h @@ -37,6 +37,7 @@ #include <linux/tracepoint.h> #include <linux/wait.h> #include <linux/workqueue.h> +#include <linux/xarray.h> #include <trace/events/rust_sample.h> #if defined(CONFIG_DRM_PANIC_SCREEN_QR_CODE) @@ -55,3 +56,8 @@ 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 xa_mark_t RUST_CONST_HELPER_XA_PRESENT = XA_PRESENT; + +const gfp_t RUST_CONST_HELPER_XA_FLAGS_ALLOC = XA_FLAGS_ALLOC; +const gfp_t RUST_CONST_HELPER_XA_FLAGS_ALLOC1 = XA_FLAGS_ALLOC1; |