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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
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#![allow(missing_docs)]
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use super::{AllocError, Allocator, Flags};
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use core::alloc::Layout;
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use core::ptr::NonNull;
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pub struct Kmalloc;
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pub type Vmalloc = Kmalloc;
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pub type KVmalloc = Kmalloc;
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unsafe impl Allocator for Kmalloc {
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unsafe fn realloc(
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_ptr: Option<NonNull<u8>>,
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_layout: Layout,
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_old_layout: Layout,
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_flags: Flags,
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) -> Result<NonNull<[u8]>, AllocError> {
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panic!();
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}
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}
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