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Architectures and Processors forum Intel Last Branch Recording (LBR) feature on ARM

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Intel Last Branch Recording (LBR) feature on ARM

Frederick over 3 years ago

Hi Everyone,

I need to know if there is the same of the Last Branch Recording (LBR) hardware feature of the Intel processors on Arm processors for instruction level monitoring during the life-time of a process with minimal overhead.

Thank you.

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0 42Bastian Schick over 3 years ago

Not sure what LBR does, but ARM's ETB records "only" branches instead of a full trace.
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0 42Bastian Schick over 3 years ago

Not sure what LBR does, but ARM's ETB records "only" branches instead of a full trace.
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0 Frederick over 3 years ago in reply to 42Bastian Schick

Which ARM processors implement it ?
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0 42Bastian Schick over 3 years ago in reply to Frederick

Cortex-A9 for example.
Follow: community.arm.com/.../reading-etb-from-software
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