[PATCH v11 2/8] rust: time: Add PartialEq/Eq/PartialOrd/Ord trait to Ktime

FUJITA Tomonori
2025-02-20T07:10:29Z

Add PartialEq/Eq/PartialOrd/Ord trait to Ktime so two Ktime instances
can be compared to determine whether a timeout is met or not.

Use the derive implements; we directly touch C's ktime_t rather than
using the C's accessors because it is more efficient and we already do
in the existing code (Ktime::sub).

Tested-by: Daniel Almeida <daniel.almeida@collabora.com>
Reviewed-by: Trevor Gross <tmgross@umich.edu>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
---
rust/kernel/time.rs | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rust/kernel/time.rs b/rust/kernel/time.rs
index 379c0f5772e5..48b71e6641ce 100644
--- a/rust/kernel/time.rs
+++ b/rust/kernel/time.rs
@@ -27,7 +27,7 @@ pub fn msecs_to_jiffies(msecs: Msecs) -> Jiffies {

/// A Rust wrapper around a `ktime_t`.
#[repr(transparent)]
-#[derive(Copy, Clone)]
+#[derive(Copy, Clone, PartialEq, PartialOrd, Eq, Ord)]
pub struct Ktime {
inner: bindings::ktime_t,
}
--
2.43.0