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Kernel: Use RefPtr instead of LockRefPtr for PhysicalPage

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I believe this to be safe, as the main thing that LockRefPtr provides
over RefPtr is safe copying from a shared LockRefPtr instance. I've
inspected the uses of RefPtr<PhysicalPage> and it seems they're all
guarded by external locking. Some of it is less obvious, but this is
an area where we're making continuous headway.
This commit is contained in:
Andreas Kling 2022-08-24 15:56:26 +02:00
parent 5a804b9a1d
commit 2c72d495a3
Notes: sideshowbarker 2024-07-17 07:48:28 +09:00
33 changed files with 141 additions and 138 deletions
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14
Kernel/Memory/SharedFramebufferVMObject.cpp
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@ -56,21 +56,21 @@ ErrorOr<void> SharedFramebufferVMObject::create_real_writes_framebuffer_vm_objec
return {};
}
Span<LockRefPtr<PhysicalPage>> SharedFramebufferVMObject::real_framebuffer_physical_pages()
Span<RefPtr<PhysicalPage>> SharedFramebufferVMObject::real_framebuffer_physical_pages()
{
return m_real_framebuffer_vmobject->physical_pages();
}
Span<LockRefPtr<PhysicalPage> const> SharedFramebufferVMObject::real_framebuffer_physical_pages() const
Span<RefPtr<PhysicalPage> const> SharedFramebufferVMObject::real_framebuffer_physical_pages() const
{
return m_real_framebuffer_vmobject->physical_pages();
}
Span<LockRefPtr<PhysicalPage>> SharedFramebufferVMObject::fake_sink_framebuffer_physical_pages()
Span<RefPtr<PhysicalPage>> SharedFramebufferVMObject::fake_sink_framebuffer_physical_pages()
{
return m_physical_pages.span();
}
Span<LockRefPtr<PhysicalPage> const> SharedFramebufferVMObject::fake_sink_framebuffer_physical_pages() const
Span<RefPtr<PhysicalPage> const> SharedFramebufferVMObject::fake_sink_framebuffer_physical_pages() const
{
return m_physical_pages.span();
}
@ -92,14 +92,14 @@ void SharedFramebufferVMObject::switch_to_real_framebuffer_writes(Badge<Kernel::
});
}
Span<LockRefPtr<PhysicalPage> const> SharedFramebufferVMObject::physical_pages() const
Span<RefPtr<PhysicalPage> const> SharedFramebufferVMObject::physical_pages() const
{
SpinlockLocker locker(m_writes_state_lock);
if (m_writes_are_faked)
return VMObject::physical_pages();
return m_real_framebuffer_vmobject->physical_pages();
}
Span<LockRefPtr<PhysicalPage>> SharedFramebufferVMObject::physical_pages()
Span<RefPtr<PhysicalPage>> SharedFramebufferVMObject::physical_pages()
{
SpinlockLocker locker(m_writes_state_lock);
if (m_writes_are_faked)
@ -107,7 +107,7 @@ Span<LockRefPtr<PhysicalPage>> SharedFramebufferVMObject::physical_pages()
return m_real_framebuffer_vmobject->physical_pages();
}
SharedFramebufferVMObject::SharedFramebufferVMObject(FixedArray<LockRefPtr<PhysicalPage>>&& new_physical_pages, CommittedPhysicalPageSet committed_pages, AnonymousVMObject& real_framebuffer_vmobject)
SharedFramebufferVMObject::SharedFramebufferVMObject(FixedArray<RefPtr<PhysicalPage>>&& new_physical_pages, CommittedPhysicalPageSet committed_pages, AnonymousVMObject& real_framebuffer_vmobject)
: VMObject(move(new_physical_pages))
, m_real_framebuffer_vmobject(real_framebuffer_vmobject)
, m_committed_pages(move(committed_pages))