Re: [PATCH 0/8] rust: DebugFS Bindings

John Hubbard
2025-04-30T00:04:20Z

On 4/29/25 4:15 PM, Matthew Maurer wrote:
> This series provides safe DebugFS bindings for Rust, with a sample
> driver using them.

Adding Timur Tabi, because he was looking into how to do this.

thanks,
John Hubbard

>
> The primary intended way to use these bindings is to attach a data
> object to a DebugFS directory handle, and use the contents of that
> attached object to serve what's inside the directory. Through a
> combination of pinning and equivariance, we can ensure that the pointers
> in the attached object will remain valid until after the DebugFS
> directory is made inaccessible.
>
> Signed-off-by: Matthew Maurer <mmaurer@google.com>
> ---
> Matthew Maurer (8):
> rust: debugfs: Bind DebugFS directory creation
> rust: debugfs: Bind file creation for long-lived Display
> rust: debugfs: Add scoped builder interface
> rust: debugfs: Allow subdir creation in builder interface
> rust: debugfs: Support format hooks
> rust: debugfs: Implement display_file in terms of fmt_file
> rust: debugfs: Helper macro for common case implementations
> rust: samples: Add debugfs sample
>
> MAINTAINERS | 2 +
> rust/bindings/bindings_helper.h | 1 +
> rust/helpers/dcache.c | 12 +
> rust/helpers/helpers.c | 1 +
> rust/kernel/debugfs.rs | 514 ++++++++++++++++++++++++++++++++++++++++
> rust/kernel/lib.rs | 1 +
> samples/rust/Kconfig | 11 +
> samples/rust/Makefile | 1 +
> samples/rust/rust_debugfs.rs | 120 ++++++++++
> 9 files changed, 663 insertions(+)
> ---
> base-commit: b6a7783d306baf3150ac54cd5124f6e85dd375b0
> change-id: 20250428-debugfs-rust-3cd5c97eb7d1
>
> Best regards,