mirror of
https://github.com/torvalds/linux.git
synced 2025-11-04 10:40:15 +02:00
8362c2608b
Implement `Allocator` for `KVmalloc`, an `Allocator` that tries to allocate memory with `kmalloc` first and, on failure, falls back to `vmalloc`. All memory allocations made with `KVmalloc` end up in `kvrealloc_noprof()`; all frees in `kvfree()`. Reviewed-by: Alice Ryhl <aliceryhl@google.com> Reviewed-by: Benno Lossin <benno.lossin@proton.me> Reviewed-by: Gary Guo <gary@garyguo.net> Signed-off-by: Danilo Krummrich <dakr@kernel.org> Link: https://lore.kernel.org/r/20241004154149.93856-10-dakr@kernel.org [ Reworded typo. - Miguel ] Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
22 lines
475 B
Rust
22 lines
475 B
Rust
// SPDX-License-Identifier: GPL-2.0
|
|
|
|
#![allow(missing_docs)]
|
|
|
|
use super::{AllocError, Allocator, Flags};
|
|
use core::alloc::Layout;
|
|
use core::ptr::NonNull;
|
|
|
|
pub struct Kmalloc;
|
|
pub type Vmalloc = Kmalloc;
|
|
pub type KVmalloc = Kmalloc;
|
|
|
|
unsafe impl Allocator for Kmalloc {
|
|
unsafe fn realloc(
|
|
_ptr: Option<NonNull<u8>>,
|
|
_layout: Layout,
|
|
_old_layout: Layout,
|
|
_flags: Flags,
|
|
) -> Result<NonNull<[u8]>, AllocError> {
|
|
panic!();
|
|
}
|
|
}
|