[PATCH 0/3] rust: add Kconfig.test

[PATCH 0/3] rust: add Kconfig.test

[Yury Norov]

There are 6 individual Rust KUnit tests. All the tests are compiled
unconditionally now, which adds ~200 kB to the kernel image on my
x86_64 buld. As Rust matures, this bloating will inevitably grow.

Add Kconfig.test, which provides a RUST_KUNIT_TESTS menu, and all
individual tests under it.

Yury Norov (3):
  rust: tests: drop 'use crate' in bitmap and atomic KUnit tests
  rust: testing: add Kconfig for KUnit test
  Documentation: rust: testing: add Kconfig guidance

 Documentation/rust/testing.rst       |  5 ++-
 init/Kconfig                         |  2 +
 rust/kernel/Kconfig.test             | 76 ++++++++++++++++++++++++++++
 rust/kernel/alloc/allocator.rs       |  1 +
 rust/kernel/alloc/kvec.rs            |  1 +
 rust/kernel/bitmap.rs                |  5 +--
 rust/kernel/kunit.rs                 |  1 +
 rust/kernel/str.rs                   |  1 +
 rust/kernel/sync/atomic/predefine.rs |  5 +--
 9 files changed, 79 insertions(+), 7 deletions(-)
 create mode 100644 rust/kernel/Kconfig.test

-- 
2.51.0

[PATCH 1/3] rust: tests: drop 'use crate' in bitmap and atomic KUnit tests

[Yury Norov]

The following patch makes usage of macros::kunit_tests crate conditional
on the corresponding configs. When the configs are disabled, compiler
warns on unused crate. So, embed it in unit test declaration.

Signed-off-by: Yury Norov <ynorov@nvidia.com>
---
 rust/kernel/bitmap.rs                | 4 +---
 rust/kernel/sync/atomic/predefine.rs | 4 +---
 2 files changed, 2 insertions(+), 6 deletions(-)

diff --git a/rust/kernel/bitmap.rs b/rust/kernel/bitmap.rs
index 83d7dea99137..894043c9e460 100644
--- a/rust/kernel/bitmap.rs
+++ b/rust/kernel/bitmap.rs
@@ -499,9 +499,7 @@ pub fn next_zero_bit(&self, start: usize) -> Option<usize> {
     }
 }
 
-use macros::kunit_tests;
-
-#[kunit_tests(rust_kernel_bitmap)]
+#[macros::kunit_tests(rust_kernel_bitmap)]
 mod tests {
     use super::*;
     use kernel::alloc::flags::GFP_KERNEL;
diff --git a/rust/kernel/sync/atomic/predefine.rs b/rust/kernel/sync/atomic/predefine.rs
index 1d53834fcb12..84fcd7cfcb73 100644
--- a/rust/kernel/sync/atomic/predefine.rs
+++ b/rust/kernel/sync/atomic/predefine.rs
@@ -154,9 +154,7 @@ fn rhs_into_delta(rhs: usize) -> isize_atomic_repr {
     }
 }
 
-use crate::macros::kunit_tests;
-
-#[kunit_tests(rust_atomics)]
+#[macros::kunit_tests(rust_atomics)]
 mod tests {
     use super::super::*;
 
-- 
2.51.0

[PATCH 2/3] rust: testing: add Kconfig for KUnit test

[Yury Norov]

There are 6 individual Rust KUnit tests. All the tests are compiled
unconditionally now, which adds ~200 kB to the kernel image for me
on x86_64. As Rust matures, this bloating will inevitably grow.

Add Kconfig.test which includes a RUST_KUNIT_TESTS menu, and all
individual tests under it.

As usual, new tests are all enabled if KUNIT_ALL_TESTS=y.

Suggested-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Yury Norov <ynorov@nvidia.com>
---
This doesn't create a new entry in MAINTAINERS for the Kconfig.test,
so the new file just follows the implicit rule for the rust/ directory.
Please let me know if the explicit entry is needed.

 init/Kconfig                         |  2 +
 rust/kernel/Kconfig.test             | 76 ++++++++++++++++++++++++++++
 rust/kernel/alloc/allocator.rs       |  1 +
 rust/kernel/alloc/kvec.rs            |  1 +
 rust/kernel/bitmap.rs                |  1 +
 rust/kernel/kunit.rs                 |  1 +
 rust/kernel/str.rs                   |  1 +
 rust/kernel/sync/atomic/predefine.rs |  1 +
 8 files changed, 84 insertions(+)
 create mode 100644 rust/kernel/Kconfig.test

diff --git a/init/Kconfig b/init/Kconfig
index 43875ef36752..4af544514e6c 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -2208,6 +2208,8 @@ config RUST
 
 	  If unsure, say N.
 
+source "rust/kernel/Kconfig.test"
+
 config RUSTC_VERSION_TEXT
 	string
 	depends on RUST
diff --git a/rust/kernel/Kconfig.test b/rust/kernel/Kconfig.test
new file mode 100644
index 000000000000..a05243696a01
--- /dev/null
+++ b/rust/kernel/Kconfig.test
@@ -0,0 +1,76 @@
+# SPDX-License-Identifier: GPL-2.0-only
+menuconfig RUST_KUNIT_TESTS
+	bool "Rust KUnit tests"
+	depends on KUNIT && RUST
+	default KUNIT_ALL_TESTS
+	help
+	  This menu collects all options for Rust Kunit tests.
+	  See Documentation/rust/testing.rst for how to protect
+	  unit tests with these options.
+
+	  Say Y here to enable Rust KUnit tests.
+
+	  If unsure, say N.
+
+if RUST_KUNIT_TESTS
+config RUST_ALLOCATOR_KUNIT_TEST
+	bool "KUnit tests for Rust allocator API" if !KUNIT_ALL_TESTS
+	default KUNIT_ALL_TESTS
+	help
+	  This option enables KUnit tests for the Rust allocator API.
+	  These are only for development and testing, not for regular
+	  kernel use cases.
+
+	  If unsure, say N.
+
+config RUST_KVEC_KUNIT_TEST
+	bool "KUnit tests for Rust KVEC API" if !KUNIT_ALL_TESTS
+	default KUNIT_ALL_TESTS
+	help
+	  This option enables KUnit tests for the Rust KVEC API.
+	  These are only for development and testing, not for
+	  regular kernel use cases.
+
+	  If unsure, say N.
+
+config RUST_BITMAP_KUNIT_TEST
+	bool "KUnit tests for Rust bitmap API" if !KUNIT_ALL_TESTS
+	default KUNIT_ALL_TESTS
+	help
+	  This option enables KUnit tests for the Rust bitmap API.
+	  These are only for development and testing, not for regular
+	  kernel use cases.
+
+	  If unsure, say N.
+
+config RUST_KUNIT_SELFTEST
+	bool "KUnit selftests for Rust" if !KUNIT_ALL_TESTS
+	default KUNIT_ALL_TESTS
+	help
+	  This option enables KUnit selftests. These are only
+	  for development and testing, not for regular kernel
+	  use cases.
+
+	  If unsure, say N.
+
+config RUST_STR_KUNIT_TEST
+	bool "KUnit tests for Rust strings APIs" if !KUNIT_ALL_TESTS
+	default KUNIT_ALL_TESTS
+	help
+	  This option enables KUnit tests for the Rust strings API.
+	  These are only for development and testing, not for regular
+	  kernel use cases.
+
+	  If unsure, say N.
+
+config RUST_ATOMICS_KUNIT_TEST
+	bool "KUnit tests for Rust atomics APIs" if !KUNIT_ALL_TESTS
+	default KUNIT_ALL_TESTS
+	help
+	  This option enables KUnit tests for the Rust atomics API.
+	  These are only for development and testing, not for regular
+	  kernel use cases.
+
+	  If unsure, say N.
+
+endif
diff --git a/rust/kernel/alloc/allocator.rs b/rust/kernel/alloc/allocator.rs
index 63bfb91b3671..0d3434bca867 100644
--- a/rust/kernel/alloc/allocator.rs
+++ b/rust/kernel/alloc/allocator.rs
@@ -251,6 +251,7 @@ unsafe fn realloc(
     }
 }
 
+#[cfg(CONFIG_RUST_ALLOCATOR_KUNIT_TEST)]
 #[macros::kunit_tests(rust_allocator)]
 mod tests {
     use super::*;
diff --git a/rust/kernel/alloc/kvec.rs b/rust/kernel/alloc/kvec.rs
index ac8d6f763ae8..563c760c8105 100644
--- a/rust/kernel/alloc/kvec.rs
+++ b/rust/kernel/alloc/kvec.rs
@@ -1351,6 +1351,7 @@ fn drop(&mut self) {
     }
 }
 
+#[cfg(CONFIG_RUST_KVEC_KUNIT_TEST)]
 #[macros::kunit_tests(rust_kvec)]
 mod tests {
     use super::*;
diff --git a/rust/kernel/bitmap.rs b/rust/kernel/bitmap.rs
index 894043c9e460..b27e0ec80d64 100644
--- a/rust/kernel/bitmap.rs
+++ b/rust/kernel/bitmap.rs
@@ -499,6 +499,7 @@ pub fn next_zero_bit(&self, start: usize) -> Option<usize> {
     }
 }
 
+#[cfg(CONFIG_RUST_BITMAP_KUNIT_TEST)]
 #[macros::kunit_tests(rust_kernel_bitmap)]
 mod tests {
     use super::*;
diff --git a/rust/kernel/kunit.rs b/rust/kernel/kunit.rs
index a1edf7491579..cdee5f27bd7f 100644
--- a/rust/kernel/kunit.rs
+++ b/rust/kernel/kunit.rs
@@ -329,6 +329,7 @@ pub fn in_kunit_test() -> bool {
     !unsafe { bindings::kunit_get_current_test() }.is_null()
 }
 
+#[cfg(CONFIG_RUST_KUNIT_SELFTEST)]
 #[kunit_tests(rust_kernel_kunit)]
 mod tests {
     use super::*;
diff --git a/rust/kernel/str.rs b/rust/kernel/str.rs
index 8311d91549e1..a435674f05ea 100644
--- a/rust/kernel/str.rs
+++ b/rust/kernel/str.rs
@@ -415,6 +415,7 @@ macro_rules! c_str {
     }};
 }
 
+#[cfg(CONFIG_RUST_STR_KUNIT_TEST)]
 #[kunit_tests(rust_kernel_str)]
 mod tests {
     use super::*;
diff --git a/rust/kernel/sync/atomic/predefine.rs b/rust/kernel/sync/atomic/predefine.rs
index 84fcd7cfcb73..7468153429e1 100644
--- a/rust/kernel/sync/atomic/predefine.rs
+++ b/rust/kernel/sync/atomic/predefine.rs
@@ -154,6 +154,7 @@ fn rhs_into_delta(rhs: usize) -> isize_atomic_repr {
     }
 }
 
+#[cfg(CONFIG_RUST_ATOMICS_KUNIT_TEST)]
 #[macros::kunit_tests(rust_atomics)]
 mod tests {
     use super::super::*;
-- 
2.51.0

[PATCH 3/3] Documentation: rust: testing: add Kconfig guidance

[Yury Norov]

Now that rust KUnit tests are protected with Kconfig, update the
documentation to mention it.

Signed-off-by: Yury Norov <ynorov@nvidia.com>
---
 Documentation/rust/testing.rst | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Documentation/rust/testing.rst b/Documentation/rust/testing.rst
index f43cb77bcc69..24de173471b2 100644
--- a/Documentation/rust/testing.rst
+++ b/Documentation/rust/testing.rst
@@ -141,10 +141,13 @@ These tests are introduced by the ``kunit_tests`` procedural macro, which takes
 the name of the test suite as an argument.
 
 For instance, assume we want to test the function ``f`` from the documentation
-tests section. We could write, in the same file where we have our function:
+tests section. We could write, in the same file where we have our function.
+Each test is protected with the corresponding Kconfig option, see
+rust/kernel/Kconfig.test.
 
 .. code-block:: rust
 
+	#[cfg(CONFIG_RUST_MYMOD_KUNIT_TEST)]
 	#[kunit_tests(rust_kernel_mymod)]
 	mod tests {
 	    use super::*;
-- 
2.51.0

Re: [PATCH 3/3] Documentation: rust: testing: add Kconfig guidance

[David Gow]

Le 17/04/2026 à 11:15 AM, Yury Norov a écrit :
> Now that rust KUnit tests are protected with Kconfig, update the
> documentation to mention it.
> 
> Signed-off-by: Yury Norov <ynorov@nvidia.com>
> ---

Looks good to me.

Reviewed-by: David Gow <david@davidgow.net>

Cheers,
-- David

>   Documentation/rust/testing.rst | 5 ++++-
>   1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/rust/testing.rst b/Documentation/rust/testing.rst
> index f43cb77bcc69..24de173471b2 100644
> --- a/Documentation/rust/testing.rst
> +++ b/Documentation/rust/testing.rst
> @@ -141,10 +141,13 @@ These tests are introduced by the ``kunit_tests`` procedural macro, which takes
>   the name of the test suite as an argument.
>   
>   For instance, assume we want to test the function ``f`` from the documentation
> -tests section. We could write, in the same file where we have our function:
> +tests section. We could write, in the same file where we have our function.
> +Each test is protected with the corresponding Kconfig option, see
> +rust/kernel/Kconfig.test.
>   
>   .. code-block:: rust
>   
> +	#[cfg(CONFIG_RUST_MYMOD_KUNIT_TEST)]
>   	#[kunit_tests(rust_kernel_mymod)]
>   	mod tests {
>   	    use super::*;

Re: [PATCH 2/3] rust: testing: add Kconfig for KUnit test

[David Gow]

Le 17/04/2026 à 11:15 AM, Yury Norov a écrit :
> There are 6 individual Rust KUnit tests. All the tests are compiled
> unconditionally now, which adds ~200 kB to the kernel image for me
> on x86_64. As Rust matures, this bloating will inevitably grow.
> 
> Add Kconfig.test which includes a RUST_KUNIT_TESTS menu, and all
> individual tests under it.

I think this makes a lot of sense for tests within the kernel crate (and 
any other 'system' crates). Individual drivers probably should still 
keep their Kconfig options under the corresponding subsystem.

> 
> As usual, new tests are all enabled if KUNIT_ALL_TESTS=y.
> 
> Suggested-by: Alice Ryhl <aliceryhl@google.com>
> Signed-off-by: Yury Norov <ynorov@nvidia.com>
> ---
> This doesn't create a new entry in MAINTAINERS for the Kconfig.test,
> so the new file just follows the implicit rule for the rust/ directory.
> Please let me know if the explicit entry is needed.
> 

I think it's fine to leave this as implicitly part of rust/, personally.

Still, this looks good.

Reviewed-by: David Gow <david@davidgow.net>

Cheers,
-- David

>   init/Kconfig                         |  2 +
>   rust/kernel/Kconfig.test             | 76 ++++++++++++++++++++++++++++
>   rust/kernel/alloc/allocator.rs       |  1 +
>   rust/kernel/alloc/kvec.rs            |  1 +
>   rust/kernel/bitmap.rs                |  1 +
>   rust/kernel/kunit.rs                 |  1 +
>   rust/kernel/str.rs                   |  1 +
>   rust/kernel/sync/atomic/predefine.rs |  1 +
>   8 files changed, 84 insertions(+)
>   create mode 100644 rust/kernel/Kconfig.test
> 
> diff --git a/init/Kconfig b/init/Kconfig
> index 43875ef36752..4af544514e6c 100644
> --- a/init/Kconfig
> +++ b/init/Kconfig
> @@ -2208,6 +2208,8 @@ config RUST
>   
>   	  If unsure, say N.
>   
> +source "rust/kernel/Kconfig.test"
> +
>   config RUSTC_VERSION_TEXT
>   	string
>   	depends on RUST
> diff --git a/rust/kernel/Kconfig.test b/rust/kernel/Kconfig.test
> new file mode 100644
> index 000000000000..a05243696a01
> --- /dev/null
> +++ b/rust/kernel/Kconfig.test
> @@ -0,0 +1,76 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +menuconfig RUST_KUNIT_TESTS
> +	bool "Rust KUnit tests"
> +	depends on KUNIT && RUST
> +	default KUNIT_ALL_TESTS
> +	help
> +	  This menu collects all options for Rust Kunit tests.
> +	  See Documentation/rust/testing.rst for how to protect
> +	  unit tests with these options.
> +
> +	  Say Y here to enable Rust KUnit tests.
> +
> +	  If unsure, say N.
> +
> +if RUST_KUNIT_TESTS
> +config RUST_ALLOCATOR_KUNIT_TEST
> +	bool "KUnit tests for Rust allocator API" if !KUNIT_ALL_TESTS
> +	default KUNIT_ALL_TESTS
> +	help
> +	  This option enables KUnit tests for the Rust allocator API.
> +	  These are only for development and testing, not for regular
> +	  kernel use cases.
> +
> +	  If unsure, say N.
> +
> +config RUST_KVEC_KUNIT_TEST
> +	bool "KUnit tests for Rust KVEC API" if !KUNIT_ALL_TESTS
> +	default KUNIT_ALL_TESTS
> +	help
> +	  This option enables KUnit tests for the Rust KVEC API.
> +	  These are only for development and testing, not for
> +	  regular kernel use cases.
> +
> +	  If unsure, say N.
> +
> +config RUST_BITMAP_KUNIT_TEST
> +	bool "KUnit tests for Rust bitmap API" if !KUNIT_ALL_TESTS
> +	default KUNIT_ALL_TESTS
> +	help
> +	  This option enables KUnit tests for the Rust bitmap API.
> +	  These are only for development and testing, not for regular
> +	  kernel use cases.
> +
> +	  If unsure, say N.
> +
> +config RUST_KUNIT_SELFTEST
> +	bool "KUnit selftests for Rust" if !KUNIT_ALL_TESTS
> +	default KUNIT_ALL_TESTS
> +	help
> +	  This option enables KUnit selftests. These are only
> +	  for development and testing, not for regular kernel
> +	  use cases.
> +
> +	  If unsure, say N.
> +
> +config RUST_STR_KUNIT_TEST
> +	bool "KUnit tests for Rust strings APIs" if !KUNIT_ALL_TESTS
> +	default KUNIT_ALL_TESTS
> +	help
> +	  This option enables KUnit tests for the Rust strings API.
> +	  These are only for development and testing, not for regular
> +	  kernel use cases.
> +
> +	  If unsure, say N.
> +
> +config RUST_ATOMICS_KUNIT_TEST
> +	bool "KUnit tests for Rust atomics APIs" if !KUNIT_ALL_TESTS
> +	default KUNIT_ALL_TESTS
> +	help
> +	  This option enables KUnit tests for the Rust atomics API.
> +	  These are only for development and testing, not for regular
> +	  kernel use cases.
> +
> +	  If unsure, say N.
> +
> +endif
> diff --git a/rust/kernel/alloc/allocator.rs b/rust/kernel/alloc/allocator.rs
> index 63bfb91b3671..0d3434bca867 100644
> --- a/rust/kernel/alloc/allocator.rs
> +++ b/rust/kernel/alloc/allocator.rs
> @@ -251,6 +251,7 @@ unsafe fn realloc(
>       }
>   }
>   
> +#[cfg(CONFIG_RUST_ALLOCATOR_KUNIT_TEST)]
>   #[macros::kunit_tests(rust_allocator)]
>   mod tests {
>       use super::*;
> diff --git a/rust/kernel/alloc/kvec.rs b/rust/kernel/alloc/kvec.rs
> index ac8d6f763ae8..563c760c8105 100644
> --- a/rust/kernel/alloc/kvec.rs
> +++ b/rust/kernel/alloc/kvec.rs
> @@ -1351,6 +1351,7 @@ fn drop(&mut self) {
>       }
>   }
>   
> +#[cfg(CONFIG_RUST_KVEC_KUNIT_TEST)]
>   #[macros::kunit_tests(rust_kvec)]
>   mod tests {
>       use super::*;
> diff --git a/rust/kernel/bitmap.rs b/rust/kernel/bitmap.rs
> index 894043c9e460..b27e0ec80d64 100644
> --- a/rust/kernel/bitmap.rs
> +++ b/rust/kernel/bitmap.rs
> @@ -499,6 +499,7 @@ pub fn next_zero_bit(&self, start: usize) -> Option<usize> {
>       }
>   }
>   
> +#[cfg(CONFIG_RUST_BITMAP_KUNIT_TEST)]
>   #[macros::kunit_tests(rust_kernel_bitmap)]
>   mod tests {
>       use super::*;
> diff --git a/rust/kernel/kunit.rs b/rust/kernel/kunit.rs
> index a1edf7491579..cdee5f27bd7f 100644
> --- a/rust/kernel/kunit.rs
> +++ b/rust/kernel/kunit.rs
> @@ -329,6 +329,7 @@ pub fn in_kunit_test() -> bool {
>       !unsafe { bindings::kunit_get_current_test() }.is_null()
>   }
>   
> +#[cfg(CONFIG_RUST_KUNIT_SELFTEST)]
>   #[kunit_tests(rust_kernel_kunit)]
>   mod tests {
>       use super::*;
> diff --git a/rust/kernel/str.rs b/rust/kernel/str.rs
> index 8311d91549e1..a435674f05ea 100644
> --- a/rust/kernel/str.rs
> +++ b/rust/kernel/str.rs
> @@ -415,6 +415,7 @@ macro_rules! c_str {
>       }};
>   }
>   
> +#[cfg(CONFIG_RUST_STR_KUNIT_TEST)]
>   #[kunit_tests(rust_kernel_str)]
>   mod tests {
>       use super::*;
> diff --git a/rust/kernel/sync/atomic/predefine.rs b/rust/kernel/sync/atomic/predefine.rs
> index 84fcd7cfcb73..7468153429e1 100644
> --- a/rust/kernel/sync/atomic/predefine.rs
> +++ b/rust/kernel/sync/atomic/predefine.rs
> @@ -154,6 +154,7 @@ fn rhs_into_delta(rhs: usize) -> isize_atomic_repr {
>       }
>   }
>   
> +#[cfg(CONFIG_RUST_ATOMICS_KUNIT_TEST)]
>   #[macros::kunit_tests(rust_atomics)]
>   mod tests {
>       use super::super::*;

Re: [PATCH 1/3] rust: tests: drop 'use crate' in bitmap and atomic KUnit tests

[David Gow]

Le 17/04/2026 à 11:15 AM, Yury Norov a écrit :
> The following patch makes usage of macros::kunit_tests crate conditional
> on the corresponding configs. When the configs are disabled, compiler
> warns on unused crate. So, embed it in unit test declaration.
> 
> Signed-off-by: Yury Norov <ynorov@nvidia.com>
> ---

Looks good to me!

Reviewed-by: David Gow <david@davidgow.net>

Cheers,
-- David

>   rust/kernel/bitmap.rs                | 4 +---
>   rust/kernel/sync/atomic/predefine.rs | 4 +---
>   2 files changed, 2 insertions(+), 6 deletions(-)
> 
> diff --git a/rust/kernel/bitmap.rs b/rust/kernel/bitmap.rs
> index 83d7dea99137..894043c9e460 100644
> --- a/rust/kernel/bitmap.rs
> +++ b/rust/kernel/bitmap.rs
> @@ -499,9 +499,7 @@ pub fn next_zero_bit(&self, start: usize) -> Option<usize> {
>       }
>   }
>   
> -use macros::kunit_tests;
> -
> -#[kunit_tests(rust_kernel_bitmap)]
> +#[macros::kunit_tests(rust_kernel_bitmap)]
>   mod tests {
>       use super::*;
>       use kernel::alloc::flags::GFP_KERNEL;
> diff --git a/rust/kernel/sync/atomic/predefine.rs b/rust/kernel/sync/atomic/predefine.rs
> index 1d53834fcb12..84fcd7cfcb73 100644
> --- a/rust/kernel/sync/atomic/predefine.rs
> +++ b/rust/kernel/sync/atomic/predefine.rs
> @@ -154,9 +154,7 @@ fn rhs_into_delta(rhs: usize) -> isize_atomic_repr {
>       }
>   }
>   
> -use crate::macros::kunit_tests;
> -
> -#[kunit_tests(rust_atomics)]
> +#[macros::kunit_tests(rust_atomics)]
>   mod tests {
>       use super::super::*;
>   

Re: [PATCH 0/3] rust: add Kconfig.test

[Gary Guo]

On Fri Apr 17, 2026 at 4:15 AM BST, Yury Norov wrote:
> There are 6 individual Rust KUnit tests. All the tests are compiled
> unconditionally now, which adds ~200 kB to the kernel image on my
> x86_64 buld. As Rust matures, this bloating will inevitably grow.
>
> Add Kconfig.test, which provides a RUST_KUNIT_TESTS menu, and all
> individual tests under it.
>
> Yury Norov (3):
>   rust: tests: drop 'use crate' in bitmap and atomic KUnit tests
>   rust: testing: add Kconfig for KUnit test
>   Documentation: rust: testing: add Kconfig guidance

Acked-by: Gary Guo <gary@garyguo.net>

>
>  Documentation/rust/testing.rst       |  5 ++-
>  init/Kconfig                         |  2 +
>  rust/kernel/Kconfig.test             | 76 ++++++++++++++++++++++++++++
>  rust/kernel/alloc/allocator.rs       |  1 +
>  rust/kernel/alloc/kvec.rs            |  1 +
>  rust/kernel/bitmap.rs                |  5 +--
>  rust/kernel/kunit.rs                 |  1 +
>  rust/kernel/str.rs                   |  1 +
>  rust/kernel/sync/atomic/predefine.rs |  5 +--
>  9 files changed, 79 insertions(+), 7 deletions(-)
>  create mode 100644 rust/kernel/Kconfig.test