发明授权
US07017031B2 Method, apparatus and system for managing released promotion bits 失效
用于管理已发布晋升位的方法,装置和系统

Method, apparatus and system for managing released promotion bits
摘要:
A data processing system includes a global promotion facility containing a plurality of promotion bit fields, an interconnect, and a plurality of processing units coupled to the global promotion facility and to the interconnect. A first processing unit includes an instruction sequencing unit, an execution unit that executes an acquisition instruction to acquire a particular promotion bit field within the global promotion facility, and a promotion awareness facility. In response to the first processing unit snooping a request by a second processing unit for the particular promotion bit field, the first processing unit records an association between the second processing unit and the particular promotion bit field in the global promotion facility. After the request and release of the particular promotion bit field by the first processing unit, the first processing unit checks the promotion awareness facility for an association for the particular promotion bit and responsive to the checking, pushes the particular promotion bit field to the second processing unit utilizing an unsolicited operation on the interconnect such that no additional request by the second processing unit is required.
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