linux - rust/kernel/time.rs

20 lines · 652 B

1	// SPDX-License-Identifier: GPL-2.0
2
3	//! Time related primitives.
4	//!
5	//! This module contains the kernel APIs related to time and timers that
6	//! have been ported or wrapped for usage by Rust code in the kernel.
7
8	/// The time unit of Linux kernel. One jiffy equals (1/HZ) second.
9	pub type Jiffies = core::ffi::c_ulong;
10
11	/// The millisecond time unit.
12	pub type Msecs = core::ffi::c_uint;
13
14	/// Converts milliseconds to jiffies.
15	#[inline]
16	pub fn msecs_to_jiffies(msecs: Msecs) -> Jiffies {
17	// SAFETY: The `__msecs_to_jiffies` function is always safe to call no
18	// matter what the argument is.
19	unsafe { bindings::__msecs_to_jiffies(msecs) }
20	}