linux-yocto/rust
FUJITA Tomonori 5afab1626a rust: module: place cleanup_module() in .exit.text section
[ Upstream commit 249c3a0e53 ]

Place cleanup_module() in .exit.text section. Currently,
cleanup_module() is likely placed in the .text section. It's
inconsistent with the layout of C modules, where cleanup_module() is
placed in .exit.text.

[ Boqun asked for an example of how the section changed to be
  put in the log. Tomonori provided the following examples:

    C module:

      $ objdump -t ~/build/x86/drivers/block/loop.o|grep clean
      0000000000000000 l     O .exit.data    0000000000000008 __UNIQUE_ID___addressable_cleanup_module412
      0000000000000000 g     F .exit.text    000000000000009c cleanup_module

    Rust module without this patch:

      $ objdump -t ~/build/x86/samples/rust/rust_minimal.o|grep clean
      00000000000002b0 g     F .text         00000000000000c6 cleanup_module
      0000000000000000 g     O .exit.data    0000000000000008 _R...___UNIQUE_ID___addressable_cleanup_module

    Rust module with this patch:

      $ objdump -t ~/build/x86/samples/rust/rust_minimal.o|grep clean
      0000000000000000 g     F .exit.text    00000000000000c6 cleanup_module
      0000000000000000 g     O .exit.data    0000000000000008 _R...___UNIQUE_ID___addressable_cleanup_module

  - Miguel ]

Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
Acked-by: Jarkko Sakkinen <jarkko@kernel.org>
Link: https://lore.kernel.org/r/20250308044506.14458-1-fujita.tomonori@gmail.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-07-06 10:57:54 +02:00
..
alloc rust: adapt alloc crate to the kernel 2022-09-28 08:57:01 +02:00
bindings rust: allocator: Prevent mis-aligned allocation 2023-08-11 12:08:18 +02:00
kernel rust: error: Rename to_kernel_errno() -> to_errno() 2024-05-17 11:56:16 +02:00
macros rust: module: place cleanup_module() in .exit.text section 2025-07-06 10:57:54 +02:00
.gitignore Kbuild: add Rust support 2022-09-28 09:02:20 +02:00
bindgen_parameters Kbuild: add Rust support 2022-09-28 09:02:20 +02:00
compiler_builtins.rs rust: add compiler_builtins crate 2022-09-28 08:58:00 +02:00
exports.c rust: export generated symbols 2022-09-28 08:59:52 +02:00
helpers.c
Makefile scripts: generate_rust_analyzer: provide cfgs for core and alloc 2025-03-28 21:58:57 +01:00