Transcription of Interrupts)in)Linux)
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Interrupts)in)Linux)
interrupts in linux COMS W4118 Prof. Kaustubh R. Joshi ~krj/os 2/13/13 COMS W4118. Spring 2013, Columbia University. Instructor: Dr. Kaustubh Joshi, AT&T Labs. 1 References: OperaWng Sys Concepts 9e, Understanding the linux Kernel, previous W4118s Copyright no2ce: care has been taken to use only those web images deemed by the instructor to be in the public domain. If you see a copyrighted image on any slide and are the copyright owner, please contact the instructor. It will be removed. Why interrupts ? Devices require a prompt response from the CPU when various events occur, even when the CPU is busy running a program Need a mechanism for a device to gain CPU s aFenWon The Kernel as a MulWthreaded Server I/O device Timer Process Process Process Kernel Data structures In common address space Syscall Syscall Interrupt Overview interrupts and ExcepWons ExcepWon Types and Handling Interrupt Request Lines (IRQs) Programmable Interrupt Controllers (PIC)
The)Kernel)as)aMulWthreaded)Server) I/O) device) Timer) Process) Process) Process) Kernel) Datastructures) In)common)address)space) Syscall) Syscall) Interrupt
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