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Kernel: Remove global MM lock in favor of SpinlockProtected

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Globally shared MemoryManager state is now kept in a GlobalData struct
and wrapped in SpinlockProtected.

A small set of members are left outside the GlobalData struct as they
are only set during boot initialization, and then remain constant.
This allows us to access those members without taking any locks.
This commit is contained in:
Andreas Kling 2022-08-25 16:46:13 +02:00
parent 36225c0ae7
commit a3b2b20782
6 changed files with 470 additions and 456 deletions
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4
Kernel/Storage/Ramdisk/Controller.cpp
View file

@ -41,7 +41,7 @@ RamdiskController::RamdiskController()
{
// Populate ramdisk controllers from Multiboot boot modules, if any.
size_t count = 0;
for (auto& used_memory_range : MM.used_memory_ranges()) {
MM.for_each_used_memory_range([&](auto& used_memory_range) {
if (used_memory_range.type == Memory::UsedMemoryRangeType::BootModule) {
size_t length = Memory::page_round_up(used_memory_range.end.get()).release_value_but_fixme_should_propagate_errors() - used_memory_range.start.get();
auto region_or_error = MM.allocate_kernel_region(used_memory_range.start, length, "Ramdisk"sv, Memory::Region::Access::ReadWrite);
@ -52,7 +52,7 @@ RamdiskController::RamdiskController()
}
count++;
}
}
});
}
RamdiskController::~RamdiskController() = default;