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Kernel: Print a summary of physical zones during boot

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Let's not print out every single zone, since that gets very noisy on
machines with a lot of RAM. :^)
This commit is contained in:
Andreas Kling 2021-07-13 22:38:23 +02:00
parent bf5e4326ac
commit 0a21d421d9
1 changed files with 13 additions and 6 deletions
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19
Kernel/VM/PhysicalRegion.cpp
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@ -42,17 +42,24 @@ void PhysicalRegion::initialize_zones()
size_t remaining_pages = m_pages;
auto base_address = m_lower;
auto make_zones = [&](size_t zone_size) {
while (remaining_pages >= zone_size) {
m_zones.append(make<PhysicalZone>(base_address, zone_size));
dmesgln(" * Zone {:016x}-{:016x} ({} bytes)", base_address.get(), base_address.get() + zone_size * PAGE_SIZE - 1, zone_size * PAGE_SIZE);
base_address = base_address.offset(zone_size * PAGE_SIZE);
auto make_zones = [&](size_t pages_per_zone) {
size_t zone_count = 0;
auto first_address = base_address;
while (remaining_pages >= pages_per_zone) {
m_zones.append(make<PhysicalZone>(base_address, pages_per_zone));
base_address = base_address.offset(pages_per_zone * PAGE_SIZE);
m_usable_zones.append(m_zones.last());
remaining_pages -= zone_size;
remaining_pages -= pages_per_zone;
++zone_count;
}
if (zone_count)
dmesgln(" * {}x PhysicalZone ({} MiB) @ {:016x}-{:016x}", zone_count, pages_per_zone / 256, first_address.get(), base_address.get() - pages_per_zone * PAGE_SIZE - 1);
};
// First make 16 MiB zones (with 4096 pages each)
make_zones(4096);
// Then divide any remaining space into 1 MiB zones (with 256 pages each)
make_zones(256);
}