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ac7ce12123
This was a premature optimization from the early days of SerenityOS. The eternal heap was a simple bump pointer allocator over a static byte array. My original idea was to avoid heap fragmentation and improve data locality, but both ideas were rooted in cargo culting, not data. We would reserve 4 MiB at boot and only ended up using ~256 KiB, wasting the rest. This patch replaces all kmalloc_eternal() usage by regular kmalloc().
56 lines
1.5 KiB
C++
56 lines
1.5 KiB
C++
/*
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* Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/IntrusiveList.h>
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#include <AK/NonnullRefPtr.h>
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#include <AK/NonnullRefPtrVector.h>
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#include <AK/Types.h>
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#include <Kernel/FileSystem/FileSystem.h>
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#include <Kernel/Storage/Partition/DiskPartition.h>
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#include <Kernel/Storage/StorageController.h>
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#include <Kernel/Storage/StorageDevice.h>
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namespace Kernel {
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class PartitionTable;
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class StorageManagement {
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public:
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StorageManagement();
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static bool initialized();
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void initialize(StringView boot_argument, bool force_pio);
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static StorageManagement& the();
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NonnullRefPtr<FileSystem> root_filesystem() const;
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static MajorNumber storage_type_major_number();
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static MinorNumber generate_storage_minor_number();
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void remove_device(StorageDevice&);
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private:
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bool boot_argument_contains_partition_uuid();
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void enumerate_controllers(bool force_pio);
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void enumerate_storage_devices();
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void enumerate_disk_partitions() const;
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void determine_boot_device();
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void determine_boot_device_with_partition_uuid();
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OwnPtr<PartitionTable> try_to_initialize_partition_table(const StorageDevice&) const;
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RefPtr<BlockDevice> boot_block_device() const;
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StringView m_boot_argument;
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WeakPtr<BlockDevice> m_boot_block_device;
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NonnullRefPtrVector<StorageController> m_controllers;
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IntrusiveList<&StorageDevice::m_list_node> m_storage_devices;
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};
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}
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