linux-yocto/rust
Viresh Kumar 33db8c97b4 rust: Use CpuId in place of raw CPU numbers
Use the newly defined `CpuId` abstraction instead of raw CPU numbers.

This also fixes a doctest failure for configurations where `nr_cpu_ids <
4`.

The C `cpumask_{set|clear}_cpu()` APIs emit a warning when given an
invalid CPU number — but only if `CONFIG_DEBUG_PER_CPU_MAPS=y` is set.

Meanwhile, `cpumask_weight()` only considers CPUs up to `nr_cpu_ids`,
which can cause inconsistencies: a CPU number greater than `nr_cpu_ids`
may be set in the mask, yet the weight calculation won't reflect it.

This leads to doctest failures when `nr_cpu_ids < 4`, as the test tries
to set CPUs 2 and 3:

  rust_doctest_kernel_cpumask_rs_0.location: rust/kernel/cpumask.rs:180
  rust_doctest_kernel_cpumask_rs_0: ASSERTION FAILED at rust/kernel/cpumask.rs:190

Fixes: 8961b8cb30 ("rust: cpumask: Add initial abstractions")
Reported-by: Miguel Ojeda <ojeda@kernel.org>
Closes: https://lore.kernel.org/rust-for-linux/CANiq72k3ozKkLMinTLQwvkyg9K=BeRxs1oYZSKhJHY-veEyZdg@mail.gmail.com/
Reported-by: Andreas Hindborg <a.hindborg@kernel.org>
Closes: https://lore.kernel.org/all/87qzzy3ric.fsf@kernel.org/
Suggested-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Boqun Feng <boqun.feng@gmail.com>
2025-06-12 10:31:28 +05:30
..
bindings Rust changes for v6.16 2025-06-04 21:18:37 -07:00
helpers Rust changes for v6.16 2025-06-04 21:18:37 -07:00
kernel rust: Use CpuId in place of raw CPU numbers 2025-06-12 10:31:28 +05:30
macros Rust changes for v6.16 2025-06-04 21:18:37 -07:00
pin-init pin-init changes for v6.16 2025-05-18 20:42:49 +02:00
uapi drm for 6.16-rc1 2025-05-28 09:46:39 -07:00
.gitignore
.kunitconfig rust: add kunitconfig 2025-03-19 23:22:21 +01:00
bindgen_parameters rust: map __kernel_size_t and friends also to usize/isize 2024-11-10 23:58:00 +01:00
build_error.rs
compiler_builtins.rs ARM: 9441/1: rust: Enable Rust support for ARMv7 2025-03-26 13:31:16 +00:00
exports.c rust: exports: improve grammar in commentary 2024-10-21 17:35:33 +02:00
ffi.rs rust: use absolute paths in macros referencing core and kernel 2025-05-23 00:12:14 +02:00
Makefile Rust changes for v6.16 2025-06-04 21:18:37 -07:00