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Kernel/KCOV: Use TRY() in KCOVInstance::buffer_allocate()

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This commit is contained in:
Andreas Kling 2021-09-06 20:32:51 +02:00
parent 0d44cdb7a2
commit d6fe5e1e5b
1 changed files with 1 additions and 8 deletions
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9
Kernel/Devices/KCOVInstance.cpp
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@ -27,20 +27,13 @@ KResult KCOVInstance::buffer_allocate(size_t buffer_size_in_entries)
// - we allocate one kernel region using that vmobject // - we allocate one kernel region using that vmobject
// - when an mmap call comes in, we allocate another userspace region, // - when an mmap call comes in, we allocate another userspace region,
// backed by the same vmobject // backed by the same vmobject
auto maybe_vmobject = Memory::AnonymousVMObject::try_create_with_size( m_vmobject = TRY(Memory::AnonymousVMObject::try_create_with_size(m_buffer_size_in_bytes, AllocationStrategy::AllocateNow));
m_buffer_size_in_bytes, AllocationStrategy::AllocateNow);
if (maybe_vmobject.is_error())
return maybe_vmobject.error();
m_vmobject = maybe_vmobject.release_value();
m_kernel_region = TRY(MM.allocate_kernel_region_with_vmobject( m_kernel_region = TRY(MM.allocate_kernel_region_with_vmobject(
*m_vmobject, m_buffer_size_in_bytes, String::formatted("kcov_{}", m_pid), *m_vmobject, m_buffer_size_in_bytes, String::formatted("kcov_{}", m_pid),
Memory::Region::Access::ReadWrite)); Memory::Region::Access::ReadWrite));
m_buffer = (u64*)m_kernel_region->vaddr().as_ptr(); m_buffer = (u64*)m_kernel_region->vaddr().as_ptr();
if (!has_buffer())
return ENOMEM;
return KSuccess; return KSuccess;
} }