What are Linux Local timer interrupts?

Question

All is in the title. Any links to good documentations are welcome.

Answer 1

I feel the local timers are used for handling the IPI related functionality. I might be wrong in this guess, need t look at the code on what they are configured for and what the handler contains. But I feel the system timer and the jiffies are linked to one of the GP Timers and hence in SMP ARM for example, the interrupt from this timer is associated with one single core through the GIC affinity registration. Will get back wit more on the local timers.