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The most notable change is the drop of the 'alloc' in-tree fork. This
is nicely reflected in the diffstat as a ~10k lines drop. In turn, this
makes the version upgrades way simpler and smaller in the future, e.g.
the latest one in commit 56f64b3706 ("rust: upgrade to Rust 1.78.0").
More importantly, this increases the chances that a newer compiler
version just works, which in turn means supporting several compiler
versions is easier now. Thus we will look into finally setting a minimum
version in the near future.
Toolchain and infrastructure:
- Upgrade to Rust 1.78.0.
This time around, due to how the kernel and Rust schedules have
aligned, there are two upgrades in fact. These allow us to remove one
more unstable feature ('offset_of') from the list, among other
improvements.
- Drop 'alloc' in-tree fork of the standard library crate, which means
all the unstable features used by 'alloc' (~30 language ones, ~60
library ones) are not a concern anymore.
- Support DWARFv5 via the '-Zdwarf-version' flag.
- Support zlib and zstd debuginfo compression via the
'-Zdebuginfo-compression' flag.
'kernel' crate:
- Support allocation flags ('GFP_*'), particularly in 'Box' (via
'BoxExt'), 'Vec' (via 'VecExt'), 'Arc' and 'UniqueArc', as well as in
the 'init' module APIs.
- Remove usage of the 'allocator_api' unstable feature.
- Remove 'try_' prefix in allocation APIs' names.
- Add 'VecExt' (an extension trait) to be able to drop the 'alloc'
fork.
- Add the '{make,to}_{upper,lower}case()' methods to 'CStr'/'CString'.
- Add the 'as_ptr' method to 'ThisModule'.
- Add the 'from_raw' method to 'ArcBorrow'.
- Add the 'into_unique_or_drop' method to 'Arc'.
- Display column number in the 'dbg!' macro output by applying the
equivalent change done to the standard library one.
- Migrate 'Work' to '#[pin_data]' thanks to the changes in the 'macros'
crate, which allows to remove an unsafe call in its 'new' associated
function.
- Prevent namespacing issues when using the '[try_][pin_]init!' macros
by changing the generated name of guard variables.
- Make the 'get' method in 'Opaque' const.
- Implement the 'Default' trait for 'LockClassKey'.
- Remove unneeded 'kernel::prelude' imports from doctests.
- Remove redundant imports.
'macros' crate:
- Add 'decl_generics' to 'parse_generics()' to support default values,
and use that to allow them in '#[pin_data]'.
Helpers:
- Trivial English grammar fix.
Documentation:
- Add section on Rust Kselftests to the "Testing" document.
- Expand the "Abstractions vs. bindings" section of the "General
Information" document.
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Merge tag 'rust-6.10' of https://github.com/Rust-for-Linux/linux
Pull Rust updates from Miguel Ojeda:
"The most notable change is the drop of the 'alloc' in-tree fork. This
is nicely reflected in the diffstat as a ~10k lines drop. In turn,
this makes the version upgrades way simpler and smaller in the future,
e.g. the latest one in commit 56f64b3706 ("rust: upgrade to Rust
1.78.0").
More importantly, this increases the chances that a newer compiler
version just works, which in turn means supporting several compiler
versions is easier now. Thus we will look into finally setting a
minimum version in the near future.
Toolchain and infrastructure:
- Upgrade to Rust 1.78.0
This time around, due to how the kernel and Rust schedules have
aligned, there are two upgrades in fact. These allow us to remove
one more unstable feature ('offset_of') from the list, among other
improvements
- Drop 'alloc' in-tree fork of the standard library crate, which
means all the unstable features used by 'alloc' (~30 language ones,
~60 library ones) are not a concern anymore
- Support DWARFv5 via the '-Zdwarf-version' flag
- Support zlib and zstd debuginfo compression via the
'-Zdebuginfo-compression' flag
'kernel' crate:
- Support allocation flags ('GFP_*'), particularly in 'Box' (via
'BoxExt'), 'Vec' (via 'VecExt'), 'Arc' and 'UniqueArc', as well as
in the 'init' module APIs
- Remove usage of the 'allocator_api' unstable feature
- Remove 'try_' prefix in allocation APIs' names
- Add 'VecExt' (an extension trait) to be able to drop the 'alloc'
fork
- Add the '{make,to}_{upper,lower}case()' methods to 'CStr'/'CString'
- Add the 'as_ptr' method to 'ThisModule'
- Add the 'from_raw' method to 'ArcBorrow'
- Add the 'into_unique_or_drop' method to 'Arc'
- Display column number in the 'dbg!' macro output by applying the
equivalent change done to the standard library one
- Migrate 'Work' to '#[pin_data]' thanks to the changes in the
'macros' crate, which allows to remove an unsafe call in its 'new'
associated function
- Prevent namespacing issues when using the '[try_][pin_]init!'
macros by changing the generated name of guard variables
- Make the 'get' method in 'Opaque' const
- Implement the 'Default' trait for 'LockClassKey'
- Remove unneeded 'kernel::prelude' imports from doctests
- Remove redundant imports
'macros' crate:
- Add 'decl_generics' to 'parse_generics()' to support default
values, and use that to allow them in '#[pin_data]'
Helpers:
- Trivial English grammar fix
Documentation:
- Add section on Rust Kselftests to the 'Testing' document
- Expand the 'Abstractions vs. bindings' section of the 'General
Information' document"
* tag 'rust-6.10' of https://github.com/Rust-for-Linux/linux: (31 commits)
rust: alloc: fix dangling pointer in VecExt<T>::reserve()
rust: upgrade to Rust 1.78.0
rust: kernel: remove redundant imports
rust: sync: implement `Default` for `LockClassKey`
docs: rust: extend abstraction and binding documentation
docs: rust: Add instructions for the Rust kselftest
rust: remove unneeded `kernel::prelude` imports from doctests
rust: update `dbg!()` to format column number
rust: helpers: Fix grammar in comment
rust: init: change the generated name of guard variables
rust: sync: add `Arc::into_unique_or_drop`
rust: sync: add `ArcBorrow::from_raw`
rust: types: Make Opaque::get const
rust: kernel: remove usage of `allocator_api` unstable feature
rust: init: update `init` module to take allocation flags
rust: sync: update `Arc` and `UniqueArc` to take allocation flags
rust: alloc: update `VecExt` to take allocation flags
rust: alloc: introduce the `BoxExt` trait
rust: alloc: introduce allocation flags
rust: alloc: remove our fork of the `alloc` crate
...
8f5b5f7811