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| author |   Benno Lossin <benno.lossin@proton.me> | 2023-04-08 12:26:27 +0000 |
|---|---|---|
| committer |   Miguel Ojeda <ojeda@kernel.org> | 2023-04-12 18:41:05 +0200 |
| commit | 701608bd030a888f654862295a49c5d0f42f864c (patch) | |
| tree | ac4f88a1371fca7845390809964512c84f2797b0 /scripts/gdb/linux/utils.py | |
| parent | rust: types: add `Opaque::ffi_init` (diff) | |
| download | linux-rng-701608bd030a888f654862295a49c5d0f42f864c.tar.xz linux-rng-701608bd030a888f654862295a49c5d0f42f864c.zip | |
rust: sync: reduce stack usage of `UniqueArc::try_new_uninit`
`UniqueArc::try_new_uninit` calls `Arc::try_new(MaybeUninit::uninit())`.
This results in the uninitialized memory being placed on the stack,
which may be arbitrarily large due to the generic `T` and thus could
cause a stack overflow for large types.
Change the implementation to use the pin-init API which enables in-place
initialization. In particular it avoids having to first construct and
then move the uninitialized memory from the stack into the final location.
Signed-off-by: Benno Lossin <benno.lossin@proton.me>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Andreas Hindborg <a.hindborg@samsung.com>
Link: https://lore.kernel.org/r/20230408122429.1103522-15-y86-dev@protonmail.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Diffstat (limited to 'scripts/gdb/linux/utils.py')
0 files changed, 0 insertions, 0 deletions