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| author | Filipe Xavier <felipe_life@live.com> | 2025-03-07 23:49:26 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-03-13 13:01:43 +0100 |
| commit | 311d5ecf16c69e691205e0e441e64e8bf1bf2840 (patch) | |
| tree | 4ebc336e9af2d074930ae30f69276776c8786258 /rust/kernel/alloc/allocator.rs | |
| parent | 6e5a4992d1468333783e4395e66aff5cca78d49b (diff) | |
rust: error: optimize error type to use nonzero
commit e9759c5b9ea555d09f426c70c880e9522e9b0576 upstream.
Optimize `Result<(), Error>` size by changing `Error` type to
`NonZero*` for niche optimization.
This reduces the space used by the `Result` type, as the `NonZero*`
type enables the compiler to apply more efficient memory layout.
For example, the `Result<(), Error>` changes size from 8 to 4 bytes.
Link: https://github.com/Rust-for-Linux/linux/issues/1120
Signed-off-by: Filipe Xavier <felipe_life@live.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Fiona Behrens <me@kloenk.dev>
Link: https://lore.kernel.org/r/BL0PR02MB4914B9B088865CF237731207E9732@BL0PR02MB4914.namprd02.prod.outlook.com
[ Removed unneeded block around `match`, added backticks in panic
message and added intra-doc link. - Miguel ]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'rust/kernel/alloc/allocator.rs')
0 files changed, 0 insertions, 0 deletions