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Method and system for minimizing the effects of disruptive hardware actions in a data processing system
| Details |
Inventors: Daly, James C.; George, Jonel; Greenstein, Paul G.; Rodell, John T.;
Assignee: International Business Machines Corporation (Armonk, NY)
Primary Examiner: Ray; Gopal C.
Assistant Examiner:
Attorney, Agent or Firm: Cutter, Esq.; Lawrence D. Heslin & Rothenberg, P.C.
When the hardware needs to perform a disruptive hardware action, such as a stop of one or more central processors, the hardware provides advance notification to all affected operating systems. The advance notification includes the time that the proposed disruptive action is intended to be initiated and its projected duration. In one instance, the hardware does not proceed with the disruptive action until it receives return acknowledgment from the operating systems that the disruptive action can be performed. The operating systems may respond back to the hardware to proceed as planned with the disruptive action or to reinitiate it only after a specified delay. This allows the operating systems time to prepare for any consequences of the disruptive action. |
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DETAILED DESCRIPTION What is claimed is: 1.
A method for minimizing the effects of disruptive hardware actions in a data processing system having an operating system, said method comprising: providing advance notification to said operating system that a disruptive action may occur; acknowledging, by said operating system, the occurrence of said disruptive action; performing said disruptive action if said operating system allows said disruptive action to occur and after said advance notification is provided; and continuing processing within said data processing system when said operating system does not allow said disruptive action to occur.
2.
The method of claim 1, wherein said acknowledging step comprises the step of determining whether said performing step is to occur at a predefined time.
3.
The method of claim 2, wherein said determining step comprises setting a predetermined delay when said performing step is not to occur at the predefined time.
4.
A method for minimizing the effects of disruptive hardware actions in a data processing system having an operating system and a central processor, said method comprising: providing advance notification to said operating system that a disruptive action may occur, wherein said disruptive action comprises stopping said central processor; performing said disruptive action if said operating system allows said disruptive action to occur and after said advance notification is provided; and continuing processing within said data processing system when said operating system does not allow said disruptive action to occur.
5.
A method for minimizing the effects of disruptive hardware actions in a data processing system having a plurality of operating systems, said method comprising: providing advance notification of a disruptive action to one or more of said operating systems to be affected by said disruptive action; performing said disruptive action if said one or more operating systems allows said disruptive action to occur and after said advance notification is provided; and continuing processing within said data processing system when said one or more operating systems does not allow said disruptive action to occur
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