Deadlock avoidance in a multi-processor computer system with extended cache line locking
US10331576B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2017 |
| Grant date | Jun 25, 2019 |
| Priority date | — |
| Expiry date | May 13, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/1052
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer implemented method for avoiding false activation of hang avoidance mechanisms of a system is provided. The computer implemented method includes receiving, by a nest of the system, rejects from a processor core of the system. The rejects are issued based on a cache line being locked by the processor core. The computer implemented method includes accumulating the rejects by the nest. The computer implemented method includes determining, by the nest, when an amount of the rejects accumulated by the nest has met or exceeded a programmable threshold. The computer implemented method also includes triggering, by the nest, a global reset to counters of the hang avoidance mechanisms of a system in response to the amount meeting or exceeding the programmable threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.