Servicing of multiple interrupts using a deferred procedure call in a multiprocessor system
US7340547B1 · kind B1 · utility
8Cited by
26References
19Claims
0Family size
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Key dates
| Filing date | Dec 2, 2003 |
| Grant date | Mar 4, 2008 |
| Priority date | — |
| Expiry date | Aug 31, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/4812
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A driver program for a multiprocessor subsystem includes an interrupt servicing routine (ISR) and a deferred procedure call (DPC). The ISR, invoked in response to an interrupt, determines whether any of the co-processors in the multiprocessor subsystem generated an interrupt. If one of the co-processors generated an interrupt, the ISR schedules the DPC for execution and disables sending of further interrupts from all of the co-processors. The DPC services pending interrupts from any of co-processors, then re-enables sending of interrupts from the co-processors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.