The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 29, 2019
Filed:
Oct. 04, 2018
International Business Machines Corporation, Armonk, NY (US);
Paul E. McKenney, Beaverton, OR (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A technique for enabling a real-time CPU-bound in-kernel workload to run an infinite loop while keeping read-copy update (RCU) grace periods finite. In an embodiment, a per-CPU indicator may be set to indicate that a CPU running the CPU-bound in-kernel workload has not reported an RCU quiescent state within a first defined time. An RCU grace period operation may be invoked from within the workload that causes an RCU quiescent state to be reported on behalf of the CPU if the per-CPU indicator is set. If the RCU quiescent state is not reported within a second defined time that is longer than the first defined time and sufficiently long to indicate an error condition requiring CPU rescheduling, the CPU may be rescheduled.