linux - rust/kernel/processor.rs

14 lines · 393 B

1	// SPDX-License-Identifier: GPL-2.0
2
3	//! Processor related primitives.
4	//!
5	//! C header: [`include/linux/processor.h`](srctree/include/linux/processor.h)
6
7	/// Lower CPU power consumption or yield to a hyperthreaded twin processor.
8	///
9	/// It also happens to serve as a compiler barrier.
10	#[inline]
11	pub fn cpu_relax() {
12	// SAFETY: Always safe to call.
13	unsafe { bindings::cpu_relax() }
14	}