https://blog.rishavs.in/tags/preparation/Recent content in Preparation on Rishav's Digital GardenHugoen-usTue, 04 Feb 2025 10:39:00 +0000https://blog.rishavs.in/posts/bsp-topics/Tue, 04 Feb 2025 10:39:00 +0000https://blog.rishavs.in/posts/bsp-topics/<h2 id="1-linux-kernel-internals">1. Linux Kernel Internals</h2> <h3 id="importance">Importance:</h3> <p>Understanding kernel internals is crucial for BSP and driver development as it helps in debugging, optimizing performance, and modifying the kernel to meet hardware-specific requirements.</p> <h3 id="topics">Topics:</h3> <ul> <li><strong>Kernel Architecture:</strong> <a href="../monolithic-vs-microkernel/">Monolithic vs Microkernel</a>, <a href="../kernel-space-vs-user-space/">Kernel and User Space interactions</a>.</li> <li><strong>Process Management:</strong> Understanding <code>task_struct</code>, process states, scheduling algorithms.</li> <li><strong>Interrupt Handling:</strong> SoftIRQs, tasklets, bottom halves, handling IRQs efficiently.</li> <li><strong>Memory Management:</strong> Paging, kmalloc/vmalloc, slab allocator, ARM MMU and memory regions.</li> <li><strong><a href="../syscalls/">Syscalls</a>:</strong> How system calls work, writing custom syscalls.</li> <li><strong><a href="../kernel-synchronization-in-linux/">Kernel Synchronization</a>:</strong> Spinlocks, mutexes, semaphores, barriers, RCU.</li> <li><strong>Workqueues and Timers:</strong> Deferred execution, using timers for scheduling tasks.</li> </ul> <hr> <h2 id="2-linux-device-drivers">2. Linux Device Drivers</h2> <h3 id="importance-1">Importance:</h3> <p>Device drivers are the bridge between hardware and the OS. Understanding drivers is crucial for embedded systems and BSP development.</p>