From ecaa6ddff2fd843c0236a931bcc62bf239956617 Mon Sep 17 00:00:00 2001
From: Gary Guo <gary@garyguo.net>
Date: Thu, 10 Nov 2022 17:41:37 +0100
Subject: 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>
---
scripts/generate_rust_analyzer.py | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
(limited to 'scripts/generate_rust_analyzer.py')
diff --git a/scripts/generate_rust_analyzer.py b/scripts/generate_rust_analyzer.py
index 75bb611bd751..ecc7ea9a4dcf 100755
--- a/scripts/generate_rust_analyzer.py
+++ b/scripts/generate_rust_analyzer.py
@@ -67,6 +67,12 @@ def generate_crates(srctree, objtree, sysroot_src):
)
crates[-1]["proc_macro_dylib_path"] = "rust/libmacros.so"
+ append_crate(
+ "build_error",
+ srctree / "rust" / "build_error.rs",
+ ["core", "compiler_builtins"],
+ )
+
append_crate(
"bindings",
srctree / "rust"/ "bindings" / "lib.rs",
@@ -78,7 +84,7 @@ def generate_crates(srctree, objtree, sysroot_src):
append_crate(
"kernel",
srctree / "rust" / "kernel" / "lib.rs",
- ["core", "alloc", "macros", "bindings"],
+ ["core", "alloc", "macros", "build_error", "bindings"],
cfg=cfg,
)
crates[-1]["source"] = {
--
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