diff options
| author | Gary Guo <gary@garyguo.net> | 2022-11-10 17:41:37 +0100 |
|---|---|---|
| committer | Miguel Ojeda <ojeda@kernel.org> | 2022-12-04 01:59:16 +0100 |
| commit | ecaa6ddff2fd843c0236a931bcc62bf239956617 (patch) | |
| tree | e7a1b32960bd4ec652dd2e8dc34e60e9d62d289d /rust/exports.c | |
| parent | ef9e37973c3a50497c943e70d577dad10a8e41f2 (diff) | |
rust: add `build_error` crate
The `build_error` crate provides a function `build_error` which
will panic at compile-time if executed in const context and,
by default, will cause a build error if not executed at compile
time and the optimizer does not optimise away the call.
The `CONFIG_RUST_BUILD_ASSERT_ALLOW` kernel option allows to
relax the default build failure and convert it to a runtime
check. If the runtime check fails, `panic!` will be called.
Its functionality will be exposed to users as a couple macros in
the `kernel` crate in the following patch, thus some documentation
here refers to them for simplicity.
Signed-off-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Wei Liu <wei.liu@kernel.org>
[Reworded, adapted for upstream and applied latest changes]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Diffstat (limited to 'rust/exports.c')
| -rw-r--r-- | rust/exports.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/rust/exports.c b/rust/exports.c index bb7cc64cecd0..83e2a7070cae 100644 --- a/rust/exports.c +++ b/rust/exports.c @@ -19,3 +19,8 @@ #include "exports_alloc_generated.h" #include "exports_bindings_generated.h" #include "exports_kernel_generated.h" + +// For modules using `rust/build_error.rs`. +#ifdef CONFIG_RUST_BUILD_ASSERT_ALLOW +EXPORT_SYMBOL_RUST_GPL(rust_build_error); +#endif |