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Kernel: Merge PurgeableVMObject into AnonymousVMObject

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This implements memory commitments and lazy-allocation of committed
memory.
This commit is contained in:
Tom 2020-09-05 15:52:14 -06:00 • committed by Andreas Kling
commit 476f17b3f1
Notes: sideshowbarker 2024-07-19 00:14:30 +09:00
35 changed files with 937 additions and 564 deletions
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4
Kernel/Heap/kmalloc.cpp
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@ -112,7 +112,7 @@ struct KmallocGlobalHeap {
// allocations not including the original allocation_request
// that triggered heap expansion. If we don't allocate
memory_size += 1 * MiB;
region = MM.allocate_kernel_region(memory_size, "kmalloc subheap", Region::Access::Read | Region::Access::Write);
region = MM.allocate_kernel_region(memory_size, "kmalloc subheap", Region::Access::Read | Region::Access::Write, false, AllocationStrategy::AllocateNow);
if (region) {
klog() << "kmalloc(): Adding even more memory to heap at " << region->vaddr() << ", bytes: " << region->size();
@ -176,7 +176,7 @@ struct KmallocGlobalHeap {
{
if (m_backup_memory)
return;
m_backup_memory = MM.allocate_kernel_region(1 * MiB, "kmalloc subheap", Region::Access::Read | Region::Access::Write);
m_backup_memory = MM.allocate_kernel_region(1 * MiB, "kmalloc subheap", Region::Access::Read | Region::Access::Write, false, AllocationStrategy::AllocateNow);
}
size_t backup_memory_bytes() const