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Re-write chunk-splitting and add unit tests

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This commit is contained in:
Zhang Junyang
2025-03-20 16:33:44 +08:00
committed by Tate, Hongliang Tian
parent ba0dc8c122
commit d8e076f58a
4 changed files with 204 additions and 21 deletions
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23
osdk/deps/frame-allocator/src/pools/mod.rs
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@ -17,7 +17,7 @@ use ostd::{
trap::DisabledLocalIrqGuard,
};
use crate::chunk::{greater_order_of, lesser_order_of, max_order_from, size_of_order, BuddyOrder};
use crate::chunk::{greater_order_of, lesser_order_of, size_of_order, split_to_chunks, BuddyOrder};
use super::set::BuddySet;
@ -114,23 +114,16 @@ pub(super) fn add_free_memory(guard: &DisabledLocalIrqGuard, addr: Paddr, size:
fn add_free_memory_to(
local_pool: &mut BuddySet<MAX_LOCAL_BUDDY_ORDER>,
guard: &DisabledLocalIrqGuard,
mut addr: Paddr,
mut size: usize,
addr: Paddr,
size: usize,
) {
// Split the range into chunks and return them to the local free lists
// respectively.
while size > 0 {
let next_chunk_order = max_order_from(addr).min(lesser_order_of(size));
if next_chunk_order >= MAX_LOCAL_BUDDY_ORDER {
dealloc_to_global_pool(addr, next_chunk_order);
split_to_chunks(addr, size).for_each(|(addr, order)| {
if order >= MAX_LOCAL_BUDDY_ORDER {
dealloc_to_global_pool(addr, order);
} else {
local_pool.insert_chunk(addr, next_chunk_order);
local_pool.insert_chunk(addr, order);
}
size -= size_of_order(next_chunk_order);
addr += size_of_order(next_chunk_order);
}
});
balancing::balance(local_pool);
LOCAL_POOL_SIZE