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Kernel: Use SpinlockProtected list in SharedIRQHandler

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Adding handlers to the SharedIRQHandler without any lock is not thread
safe. Use SpinlockProtected list instead.
This commit is contained in:
Pankaj Raghav 2023-04-12 22:49:07 +02:00 • committed by Andreas Kling
parent fd8a154f8c
commit 756a73471e
2 changed files with 17 additions and 12 deletions
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8
Kernel/Interrupts/SharedIRQHandler.h
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@ -11,6 +11,7 @@
#include <Kernel/Arch/IRQController.h>
#include <Kernel/Interrupts/GenericInterruptHandler.h>
#include <Kernel/Library/LockRefPtr.h>
#include <Kernel/Locking/SpinlockProtected.h>
namespace Kernel {
class IRQHandler;
@ -27,7 +28,10 @@ public:
void enumerate_handlers(Function<void(GenericInterruptHandler&)>&);
virtual size_t sharing_devices_count() const override { return m_handlers.size_slow(); }
virtual size_t sharing_devices_count() const override
{
return m_handlers.with([](auto& list) { return list.size_slow(); });
}
virtual bool is_shared_handler() const override { return true; }
virtual bool is_sharing_with_others() const override { return false; }
@ -40,7 +44,7 @@ private:
void disable_interrupt_vector();
explicit SharedIRQHandler(u8 interrupt_number);
bool m_enabled { true };
GenericInterruptHandler::List m_handlers;
SpinlockProtected<GenericInterruptHandler::List, LockRank::None> m_handlers;
NonnullLockRefPtr<IRQController> m_responsible_irq_controller;
};
}