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Chapter 14. Kernel Activities > Software Interrupts

14.2. Software Interrupts

Software interrupts enable the kernel to defer tasks. Because they function in a similar way to the interrupts described above but are implemented fully in the software, they are logically enough known as software interrupts or softIRQs.

The kernel is informed of an anomalous condition by means of a software interrupt, and the situation is resolved at some later time by special handler routines. As already noted, the kernel services all pending software interrupts at the end of do_IRQ so that regular activation is ensured.


  

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