In “Handler Migration and Direct Interrupt Scheduling,” Jupyung Lee and Kyu Ho Park of the Korea Advanced Institute of Science and Technology describe two techniques to minimize the scheduling latency ...

Tip #3 – Verify callback before use — Setting the initial value of the callback pointer to NULL or to a generic handler allows the interrupt to validate that an interrupt handler has been set. When ...

3) Delay can be any random number giving user the flexibility or it can be made a function of interrupts. 4) The interrupt handler runs parallel to entire environment; therefore, user need not worry ...

In order to determine the source of an interrupt, the firmware first reads the top level interrupt register and then reads the lower level registers which were indicated by the top level register ...

Interrupt Handling Handling interrupts is an important aspect when programming embedded devices. Interrupts are used, for example, to indicate that a hardware or software event has happened.

Interrupt Handlers. An interrupt handler (also called an interrupt service routine) is aspecial method which is executed when an external hardware interrupt istriggered. Each handler is specified by ...

We often take our “SoftwareSerial” libraries for granted, and don’t investigate what goes on under the hood — until they fail us, at least. Would you like to learn how to ...

This is why, for absolute best-of-class real-time performance, a deterministic single polling loop approach with fast interrupt handler routines for incoming events is by far the most deterministic.

The effect of the emulation is that real-time tasks and handlers execute when they need to execute, no matter what Linux is doing. When an interrupt arrives, the RTLinux kernel intercepts the ...

Allocates a new sk_buff structure, defined in include/linux/skbuff.h, which represents the kernel's view of a packet. Fetches packet data from the card buffer into the freshly allocated sk_buff, ...