From: FUJITA Tomonori <fujita.tomonori@gmail.com>
Date: Wed, 23 Apr 2025 19:28:52 +0000 (+0900)
Subject: rust: time: Add PartialEq/Eq/PartialOrd/Ord trait to Ktime
X-Git-Tag: v6.16-rc1~45^2~36^2~3
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=3caad57d29b5f64fa41cff0b12cc5d9144dacb04;p=linux-block.git

rust: time: Add PartialEq/Eq/PartialOrd/Ord trait to Ktime

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).

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>
Tested-by: Daniel Almeida <daniel.almeida@collabora.com>
Reviewed-by: Andreas Hindborg <a.hindborg@kernel.org>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
Link: https://lore.kernel.org/r/20250423192857.199712-3-fujita.tomonori@gmail.com
Signed-off-by: Andreas Hindborg <a.hindborg@kernel.org>
---

diff --git a/rust/kernel/time.rs b/rust/kernel/time.rs
index f509cb0eb71e..9d57e8a5552a 100644
--- a/rust/kernel/time.rs
+++ b/rust/kernel/time.rs
@@ -29,7 +29,7 @@ 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,
 }