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Kernel: Wrap RegionTree objects in SpinlockProtected

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This makes locking them much more straightforward, and we can remove
a bunch of confusing use of AddressSpace::m_lock. That lock will also
be converted to use of SpinlockProtected in a subsequent patch.
This commit is contained in:
Andreas Kling 2022-08-23 12:28:04 +02:00
parent 352d6545a9
commit dc9d2c1b10
9 changed files with 251 additions and 234 deletions
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5
Kernel/Memory/RegionTree.cpp
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@ -151,7 +151,6 @@ ErrorOr<VirtualRange> RegionTree::allocate_range_randomized(size_t size, size_t
ErrorOr<void> RegionTree::place_anywhere(Region& region, RandomizeVirtualAddress randomize_virtual_address, size_t size, size_t alignment)
{
SpinlockLocker locker(m_lock);
auto range = TRY(randomize_virtual_address == RandomizeVirtualAddress::Yes ? allocate_range_randomized(size, alignment) : allocate_range_anywhere(size, alignment));
region.m_range = range;
m_regions.insert(region.vaddr().get(), region);
@ -160,7 +159,6 @@ ErrorOr<void> RegionTree::place_anywhere(Region& region, RandomizeVirtualAddress
ErrorOr<void> RegionTree::place_specifically(Region& region, VirtualRange const& range)
{
SpinlockLocker locker(m_lock);
auto allocated_range = TRY(allocate_range_specific(range.base(), range.size()));
region.m_range = allocated_range;
m_regions.insert(region.vaddr().get(), region);
@ -169,13 +167,11 @@ ErrorOr<void> RegionTree::place_specifically(Region& region, VirtualRange const&
bool RegionTree::remove(Region& region)
{
SpinlockLocker locker(m_lock);
return m_regions.remove(region.range().base().get());
}
Region* RegionTree::find_region_containing(VirtualAddress address)
{
SpinlockLocker locker(m_lock);
auto* region = m_regions.find_largest_not_above(address.get());
if (!region || !region->contains(address))
return nullptr;
@ -184,7 +180,6 @@ Region* RegionTree::find_region_containing(VirtualAddress address)
Region* RegionTree::find_region_containing(VirtualRange range)
{
SpinlockLocker lock(m_lock);
auto* region = m_regions.find_largest_not_above(range.base().get());
if (!region || !region->contains(range))
return nullptr;