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Message-Id: <20241017-hrtimer-v3-v6-12-rc2-v3-1-59a75cbb44da@kernel.org>
Date: Thu, 17 Oct 2024 15:04:28 +0200
From: Andreas Hindborg <a.hindborg@...nel.org>
To: Miguel Ojeda <ojeda@...nel.org>,
Anna-Maria Behnsen <anna-maria@...utronix.de>,
Frederic Weisbecker <frederic@...nel.org>,
Thomas Gleixner <tglx@...utronix.de>
Cc: Alex Gaynor <alex.gaynor@...il.com>, Boqun Feng <boqun.feng@...il.com>,
Gary Guo <gary@...yguo.net>,
Björn Roy Baron <bjorn3_gh@...tonmail.com>,
Benno Lossin <benno.lossin@...ton.me>, Alice Ryhl <aliceryhl@...gle.com>,
Trevor Gross <tmgross@...ch.edu>, Lyude Paul <lyude@...hat.com>,
rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org,
Andreas Hindborg <a.hindborg@...nel.org>
Subject: [PATCH v3 01/13] rust: time: Add Ktime::from_ns()
From: Lyude Paul <lyude@...hat.com>
A simple function to turn the provided value in nanoseconds into a Ktime
value. We allow any type which implements Into<bindings::ktime_t>, which
resolves to Into<i64>.
This is useful for some of the older DRM APIs that never got moved to Ktime
Signed-off-by: Lyude Paul <lyude@...hat.com>
Signed-off-by: Andreas Hindborg <a.hindborg@...nel.org>
---
rust/kernel/time.rs | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/rust/kernel/time.rs b/rust/kernel/time.rs
index e3bb5e89f88dac423e2c0083de8fdfe5ac9a272f..1e02eee09f22b08d4f3ab160e8b31b341b5d015c 100644
--- a/rust/kernel/time.rs
+++ b/rust/kernel/time.rs
@@ -8,6 +8,8 @@
//! C header: [`include/linux/jiffies.h`](srctree/include/linux/jiffies.h).
//! C header: [`include/linux/ktime.h`](srctree/include/linux/ktime.h).
+use core::convert::Into;
+
/// The number of nanoseconds per millisecond.
pub const NSEC_PER_MSEC: i64 = bindings::NSEC_PER_MSEC as i64;
@@ -63,6 +65,12 @@ pub fn to_ns(self) -> i64 {
pub fn to_ms(self) -> i64 {
self.divns_constant::<NSEC_PER_MSEC>()
}
+
+ /// Creates a new Ktime from the given duration in nanoseconds
+ #[inline]
+ pub fn from_ns(ns: impl Into<bindings::ktime_t>) -> Self {
+ Self { inner: ns.into() }
+ }
}
/// Returns the number of milliseconds between two ktimes.
--
2.46.0
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