Kernel subsystem for handling performance counters and events
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United States of America Patent
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Oct 9, 2012
Grant Date -
Jun 9, 2011
app pub date -
Dec 4, 2009
filing date -
Dec 4, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A system for handling performance counters and events includes an operating system that receives a request of a first application for performance data associated with a type of event to be performed by a second application, causes a hardware counter pertaining to the event type to be activated, and provides a file descriptor corresponding to the hardware counter to the first application. The operating system then receives a second request of the first application for a value of the hardware counter, where the second request includes the file descriptor, and provides the value of the hardware counter to the first application.
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