mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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101b7cf006
The name `zeroed` is a much better fit for a function that returns the
type by-value.
Link: 7dbe38682c
[ also rename uses in `rust/kernel/init.rs` - Benno]
Link: https://lore.kernel.org/all/20250523145125.523275-2-lossin@kernel.org
[ Fix wrong replacement of `mem::zeroed` in the definition of `trait
Zeroable`. - Benno ]
[ Also change occurrences of `zeroed` in `configfs.rs` - Benno ]
Acked-by: Andreas Hindborg <a.hindborg@kernel.org>
Signed-off-by: Benno Lossin <lossin@kernel.org>
43 lines
935 B
Rust
43 lines
935 B
Rust
// SPDX-License-Identifier: Apache-2.0 OR MIT
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use pin_init::*;
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// Struct with size over 1GiB
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#[derive(Debug)]
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#[allow(dead_code)]
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pub struct BigStruct {
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buf: [u8; 1024 * 1024 * 1024],
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a: u64,
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b: u64,
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c: u64,
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d: u64,
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managed_buf: ManagedBuf,
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}
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#[derive(Debug)]
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pub struct ManagedBuf {
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buf: [u8; 1024 * 1024],
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}
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impl ManagedBuf {
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pub fn new() -> impl Init<Self> {
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init!(ManagedBuf { buf <- init_zeroed() })
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}
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}
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fn main() {
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#[cfg(any(feature = "std", feature = "alloc"))]
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{
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// we want to initialize the struct in-place, otherwise we would get a stackoverflow
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let buf: Box<BigStruct> = Box::init(init!(BigStruct {
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buf <- init_zeroed(),
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a: 7,
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b: 186,
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c: 7789,
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d: 34,
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managed_buf <- ManagedBuf::new(),
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}))
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.unwrap();
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println!("{}", core::mem::size_of_val(&*buf));
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}
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}
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