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Kernel: Remove the kmalloc_eternal heap :^)

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().
This commit is contained in:
Andreas Kling 2021-12-28 19:12:22 +01:00
parent a1be135891
commit ac7ce12123
46 changed files with 5 additions and 82 deletions

View file

@ -16,7 +16,7 @@ class RamdiskController;
class RamdiskDevice final : public StorageDevice {
friend class RamdiskController;
friend class DeviceManagement;
AK_MAKE_ETERNAL
public:
static NonnullRefPtr<RamdiskDevice> create(const RamdiskController&, NonnullOwnPtr<Memory::Region>&& region, int major, int minor);
virtual ~RamdiskDevice() override;