core.cxxm File Reference

Unified reclaim: walks page_cache + all VMAs via the SCOMS. More...

import std;
import lib.error;
import zxfoundation.base.types;

Include dependency graph for core.cxxm:

Typedefs
using	zxfoundation::memory::reclaim::reclaim_fn = auto (*)(u8 node, u32 target_pages) noexcept -> u32

Functions
auto	zxfoundation::memory::reclaim::install (reclaim_fn callback) noexcept -> std::expected< void, lib::kernel_error >
	Install the reclaim callback used by kswapd and allocation retry.
auto	zxfoundation::memory::reclaim::reclaim_for_allocation (u8 node, u32 target_pages) noexcept -> std::expected< void, lib::kernel_error >
	Reclaim enough pages to satisfy an allocation retry.
auto	zxfoundation::memory::reclaim::reclaim_node (u8 node, u32 target_pages) noexcept -> std::expected< u32, lib::kernel_error >
	Reclaim pages on one NUMA node.
auto	zxfoundation::memory::reclaim::reclaim_range (u64 phys_start, u64 phys_end) noexcept -> u32
	Evict every resident page whose physical address lies in [phys_start, phys_end).

Detailed Description

Unified reclaim: walks page_cache + all VMAs via the SCOMS.

SPDX-License-Identifier: Apache-2.0

Function Documentation

install()

auto zxfoundation::memory::reclaim::install ( reclaim_fn callback ) ->std::expected< void, lib::kernel_error >

nodiscardexportnoexcept

Install the reclaim callback used by kswapd and allocation retry.

Parameters

[in]

callback

Callback that isolates and reclaims pages.

Returns

Success or invalid argument.

reclaim_for_allocation()

auto zxfoundation::memory::reclaim::reclaim_for_allocation ( u8 node, u32 target_pages )->std::expected< void, lib::kernel_error >

nodiscardexportnoexcept

Reclaim enough pages to satisfy an allocation retry.

Parameters

[in]	node	Preferred NUMA node.
[in]	target_pages	Minimum progress.

Returns

Success when progress meets the target.

reclaim_node()

auto zxfoundation::memory::reclaim::reclaim_node ( u8 node, u32 target_pages )->std::expected< u32, lib::kernel_error >

nodiscardexportnoexcept

Reclaim pages on one NUMA node.

Parameters

[in]	node	Preferred NUMA node.
[in]	target_pages	Minimum requested progress.

Returns

Pages reclaimed or a provider-not-ready error.

reclaim_range()

auto zxfoundation::memory::reclaim::reclaim_range ( u64 phys_start, u64 phys_end )->u32

nodiscardexportnoexcept

Evict every resident page whose physical address lies in [phys_start, phys_end).

Returns

Number of frames actually freed back to PMM.