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authorThomas Zimmermann <tzimmermann@suse.de>2024-03-25 21:11:58 +0100
committerThomas Zimmermann <tzimmermann@suse.de>2024-03-25 21:11:58 +0100
commit36a1818f5a1e50b805317ba13f827067d50f6970 (patch)
treeb9414b9509bea9f006c292a46a7632ffb57d18ee /rust/kernel/time.rs
parent2295bd846765c766701e666ed2e4b35396be25e6 (diff)
parent4cece764965020c22cff7665b18a012006359095 (diff)
Merge drm/drm-fixes into drm-misc-fixes
Backmerging to get drm-misc-fixes to the state of v6.9-rc1. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Diffstat (limited to 'rust/kernel/time.rs')
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1 files changed, 20 insertions, 0 deletions
diff --git a/rust/kernel/time.rs b/rust/kernel/time.rs
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+++ b/rust/kernel/time.rs
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+// SPDX-License-Identifier: GPL-2.0
+
+//! Time related primitives.
+//!
+//! This module contains the kernel APIs related to time and timers that
+//! have been ported or wrapped for usage by Rust code in the kernel.
+
+/// The time unit of Linux kernel. One jiffy equals (1/HZ) second.
+pub type Jiffies = core::ffi::c_ulong;
+
+/// The millisecond time unit.
+pub type Msecs = core::ffi::c_uint;
+
+/// Converts milliseconds to jiffies.
+#[inline]
+pub fn msecs_to_jiffies(msecs: Msecs) -> Jiffies {
+ // SAFETY: The `__msecs_to_jiffies` function is always safe to call no
+ // matter what the argument is.
+ unsafe { bindings::__msecs_to_jiffies(msecs) }
+}