kernel::alloc::allocator

Struct KVmalloc

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pub struct KVmalloc;
Expand description

The kvmalloc kernel allocator.

KVmalloc attempts to allocate memory with Kmalloc first, but falls back to Vmalloc upon failure. This allocator is typically used when the size for the requested allocation is not known and may exceed the capabilities of Kmalloc.

For more details see self.

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impl Allocator for KVmalloc

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unsafe fn realloc( ptr: Option<NonNull<u8>>, layout: Layout, old_layout: Layout, flags: Flags, ) -> Result<NonNull<[u8]>, AllocError>

Re-allocate an existing memory allocation to satisfy the requested layout. Read more
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fn alloc(layout: Layout, flags: Flags) -> Result<NonNull<[u8]>, AllocError>

Allocate memory based on layout and flags. Read more
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unsafe fn free(ptr: NonNull<u8>, layout: Layout)

Free an existing memory allocation. Read more

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, E> Init<T, E> for T

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unsafe fn __init(self, slot: *mut T) -> Result<(), E>

Initializes slot. Read more
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fn chain<F>(self, f: F) -> ChainInit<Self, F, T, E>
where F: FnOnce(&mut T) -> Result<(), E>,

First initializes the value using self then calls the function f with the initialized value. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, E> PinInit<T, E> for T

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unsafe fn __pinned_init(self, slot: *mut T) -> Result<(), E>

Initializes slot. Read more
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fn pin_chain<F>(self, f: F) -> ChainPinInit<Self, F, T, E>
where F: FnOnce(Pin<&mut T>) -> Result<(), E>,

First initializes the value using self then calls the function f with the initialized value. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.