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In this video, we dive into spinlocks, one of the most important synchronization mechanisms in the Linux kernel. especially when working with interrupt context (ISR). You’ll learn why mutexes cannot be used inside an ISR and how spinlocks provide a safe way to protect shared data between process context and interrupt handlers. Using a practical GPIO interrupt + character driver example, we demonstrate: * How race conditions occur * Why spinlocks are required * And how to correctly use spin_lock() and spin_lock_irqsave() Github :- https://github.com/madhawapolkotuwa/linux_driver_development_with_raspberrypi/tree/main Let's Connect ====================== Buy me a Coffee : ☕https://buymeacoffee.com/madhawapolb Patreon : https://patreon.com/MadhawaPolkotuwa #kernel #linuxdevicedriver #programming #linuxprogramming
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