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Kernel: Make PhysicalRegion::return_page() do arithmetic instead of loop
Most of the time, we will be freeing physical pages within the full-sized zones. We can do some simple math to find the right zone immediately instead of looping through the zones, checking each one. We still do loop through the slack/remainder zones at the end. There's probably an even nicer way to solve this, but this is already a nice improvement. :^)
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2 changed files with 21 additions and 8 deletions
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@ -41,6 +41,9 @@ public:
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private:
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PhysicalRegion(PhysicalAddress lower, PhysicalAddress upper);
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static constexpr size_t large_zone_size = 16 * MiB;
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static constexpr size_t small_zone_size = 1 * MiB;
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NonnullOwnPtrVector<PhysicalZone> m_zones;
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PhysicalZone::List m_usable_zones;
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