Patent · US Active

Automated switching between interrupt context I/O processing and thread context I/O processing

US11074101B2 · kind B2 · utility

0Cited by

2References

12Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Mathew Accapadi · Austin, US
Chad Collie · Springdale, US
Vani D. Ramagiri · Austin, US
Lloyd Phillips · Austin, US
Anil Kalavakolanu · Austin, US
Teresa H. Pham · Cedar Park, US

Key dates

Filing date	Oct 23, 2018
Grant date	Jul 27, 2021
Priority date	—
Expiry date	Dec 21, 2038

Classification

Technology area (CPC G)Physics
CPC primaryG06F13/24
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Embodiments include method, systems and computer program products for switching between interrupt context input/output I/O processing versus thread context I/O processing. The method includes receiving, by a processor of a plurality of processors, an interrupt. A device driver for an I/O adapter determines that the dispatch latency for an associated kernel thread is greater than a first predetermined threshold. An adapter switches to an interrupt context mode. The adapter processes an I/O on the processor associated with the received interrupt to completion.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.