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kernel/process: Replace process resource limit instance with the kernel's resource limit

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This commit addresses the inaccurate behavior of kernel processes creating their own resource limit, rather than utilizing the kernel's system-wide resource limit instance.
This commit is contained in:
ameerj 2021-04-12 16:14:19 -04:00
parent ddbd1387aa
commit 5e85bc3d23
2 changed files with 27 additions and 38 deletions
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24
src/core/hle/kernel/process.cpp
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@ -120,9 +120,7 @@ std::shared_ptr<Process> Process::Create(Core::System& system, std::string name,
std::shared_ptr<Process> process = std::make_shared<Process>(system);
process->name = std::move(name);
// TODO: This is inaccurate
// The process should hold a reference to the kernel-wide resource limit.
process->resource_limit = std::make_shared<KResourceLimit>(kernel, system);
process->resource_limit = kernel.GetSystemResourceLimit();
process->status = ProcessStatus::Created;
process->program_id = 0;
process->process_id = type == ProcessType::KernelInternal ? kernel.CreateNewKernelProcessID()
@ -160,17 +158,13 @@ void Process::DecrementThreadCount() {
}
u64 Process::GetTotalPhysicalMemoryAvailable() const {
// TODO: This is expected to always return the application memory pool size after accurately
// reserving kernel resources. The current workaround uses a process-local resource limit of
// application memory pool size, which is inaccurate.
const u64 capacity{resource_limit->GetFreeValue(LimitableResource::PhysicalMemory) +
page_table->GetTotalHeapSize() + GetSystemResourceSize() + image_size +
main_thread_stack_size};
ASSERT(capacity == kernel.MemoryManager().GetSize(KMemoryManager::Pool::Application));
if (capacity < memory_usage_capacity) {
return capacity;
}
return memory_usage_capacity;
}
@ -272,10 +266,6 @@ ResultCode Process::LoadFromMetadata(const FileSys::ProgramMetadata& metadata,
system_resource_size = metadata.GetSystemResourceSize();
image_size = code_size;
// Set initial resource limits
resource_limit->SetLimitValue(
LimitableResource::PhysicalMemory,
kernel.MemoryManager().GetSize(KMemoryManager::Pool::Application));
KScopedResourceReservation memory_reservation(resource_limit, LimitableResource::PhysicalMemory,
code_size + system_resource_size);
if (!memory_reservation.Succeeded()) {
@ -324,16 +314,6 @@ ResultCode Process::LoadFromMetadata(const FileSys::ProgramMetadata& metadata,
UNREACHABLE();
}
// Set initial resource limits
resource_limit->SetLimitValue(
LimitableResource::PhysicalMemory,
kernel.MemoryManager().GetSize(KMemoryManager::Pool::Application));
resource_limit->SetLimitValue(LimitableResource::Threads, 608);
resource_limit->SetLimitValue(LimitableResource::Events, 700);
resource_limit->SetLimitValue(LimitableResource::TransferMemory, 128);
resource_limit->SetLimitValue(LimitableResource::Sessions, 894);
// Create TLS region
tls_region_address = CreateTLSRegion();
memory_reservation.Commit();